Full Agenda Adhesion GPCR workshop 2024 CINVESTAV, Mexico City, Mexico October 23-25 Download PDF Program HERE < Back to Full Agenda Mexico City Nocturnal Tour, Food and drinks Coming Soon < Previous Session Next Session >

Full Agenda Adhesion GPCR workshop 2024 CINVESTAV, Mexico City, Mexico October 23-25 Download PDF Program HERE < Back to Full Agenda Leaving for City Center Coming Soon < Previous Session Next Session >

Full Agenda Adhesion GPCR workshop 2024 CINVESTAV, Mexico City, Mexico October 23-25 Download PDF Program HERE < Back to Full Agenda Session III Molecular tools and biosensors directed at AGPCR signaling and function The NTF Release Sensor Approach for Drug Discovery for Human Adhesion GPCRs Stephanie Häfner bioSens-All: A Multiparametric BRET-Based Platform for Comprehensive Profiling of adhesion GPCR Signaling and Pharmacology-Enabling Drug Discovery Laurent Sabbagh Characterizing hADGRE5/CD97 Activation and Signaling: A Mechanical Stimulation BRET-Based Approach (MS-BRET) Ana Lilia Moreno Salinas The NTF Release Sensor Approach for Drug Discovery for Human Adhesion GPCRs Stephanie Häfner Abstract "G Protein-coupled receptors (GPCRs) are common drug targets, yet no approved drugs exist for the Adhesion G Protein-coupled receptors (aGPCRs or ADGRs). This gap is due to their unique autoproteolytic cleavage in the GAIN domain, creating a heterodimer of an N-terminal fragment (NTF) and a C-terminal fragment (CTF), posing challenges for traditional drug discovery. To address this, we developed the NTF release sensor (NRS), a genetically encoded reporter that facilitates visualization and quantification of aGPCR NTF-CTF separation events both in vitro and in vivo. The NRS fuses the extracellular region of any given aGPCR with a cleavage module from a Notch receptor. Upon NTF dissociation, an intracellular transcription factor (reporter module) is released, generating a specific, measurable biochemical signal. The NRS system has recently been validated in vivo by targeting the latrophilin-type aGPCR Cirl/ADGRL in Drosophila, revealing NTF release and receptor dissociation within the developing nervous system. It was then adapted for the human aGPCRs CD97/ADGRE5 and Latrophilin/ADGRL3 and tested in HEK293T cells using a luciferase assay to detect NTF release events. After validating the functionality of the NRS and demonstrating its utility for monitoring aGPCR dissociation across different species, we plan to adapt this technology for high-throughput screening of pharmacological compound libraries to identify potential therapeutic substances for aGPCRs. By leveraging self-cleavage and NTF release, the NRS technology offers a novel approach distinct from conventional GPCR drug discovery methods. This tailored system aims to expedite the identification of drugs targeting the unique aGPCR receptor family and customize the method for disease-relevant human aGPCRs." Authors & Affiliations "Dahse, Anne-Kristin; Annadurai, Prabakaran; Demirbaş, Berkay; Kemkemer, Marguerite; Langenhan, Tobias; Scholz, Nicole Rudolf Schönheimer Institute of Biochemistry, Divison of General Biochemistry, Medical Faculty, Leipzig University, Leipzig, Germany" About Stephanie Häfner "I am a trained chemist with extensive biochemical experience. After earning my Master of Science in Chemistry, I pursued my PhD in Dr. Michael Schaefer’s group at Leipzig University, Germany, focusing on drug screening and utilizing electrophysiological and imaging techniques to study TRP ion channels. Immediately following my PhD, I joined Dr. Guillaume Sandoz's group in 2019 as a postdoctoral research scientist at Université Côte d‘Azur, France. There, I investigated Two-Pore-Potassium channels using electrophysiology, molecular and chemical biology techniques, and fluorescence imaging. In 2021, I joined Dr. Tobias Langenhan's group, where I currently manage a project to establish a drug screening assay for Adhesion GPCRs using a specialized sensor system and mentor PhD students." Stephanie Häfner on the web LinkedIn Scholz Lab Langenhan Lab bioSens-All: A Multiparametric BRET-Based Platform for Comprehensive Profiling of adhesion GPCR Signaling and Pharmacology-Enabling Drug Discovery Laurent Sabbagh Abstract "The 3rd generation bioSens-All platform combines BRET-based biosensors that are highly adaptable to the needs of discovery projects for small molecules, peptides, and antibodies. The platform has been successfully used internally to identify biased small molecule negative allosteric modulators for protease-activated receptor 2 (PAR2). The platform revealed different mechanisms-of-action of our lead compound when benchmarked against other antagonists of PAR2. In addition, the platform was used to develop assays for high-throughput screening for challenging adhesion GPCRs. These examples will demonstrate how the bioSens-All platform was used to advance projects from discovery to preclinical candidate nomination and to provide the tools to advance adhesion GPCR biology." Authors & Affiliations "Ana Lilia Moreno Salinas (2), Arturo Mancini (1), Raida Jallouli (2), Richard Leduc (2) (1)Domain Therapeutics North America Inc, Montréal, Québec, Canada (2) Department of Pharmacology-Physiology, Université de Sherbrooke, Québec, Canada" About Laurent Sabbagh "Laurent holds a Ph.D. in immunology from McGill University. Following his doctoral degree Dr. Sabbagh undertook post-doctoral fellowships at the Ontario Cancer Institute and the University of Toronto before being recruited by University of Montreal as an assistant professor working on the role of TNF receptors in immunological memory, inflammation and hematological malignancies. In the fall of 2013, Dr. Sabbagh was recruited by Vertex Pharmaceuticals (Canada) where he worked on biomarker discovery for inflammatory bowel disease and small molecules drug discovery for polycystic kidney disease. Subsequently, Dr. Sabbagh led research projects aimed on drug discovery of small molecules for the treatment of inflammatory disorders and cancer at Paraza Pharma Inc. in Montreal. Laurent is currently leading DTNA discovery group working on GPCRs in immuno-oncology to discover new molecules and antibodies." Laurent Sabbagh on the web Domain Therapeutics Characterizing hADGRE5/CD97 Activation and Signaling: A Mechanical Stimulation BRET-Based Approach (MS-BRET) Ana Lilia Moreno Salinas Abstract Only available for AGPCR 24 Attendees Authors & Affiliations "Arturo Mancini (2), Samya Aouad (2,3), Herthana Kandasamy (2), Sandra Morrissette (2), Arhamatoulaye Maiga (4), Michel Bouvier (4), Richard Leduc (1), Laurent Sabbagh (2) 1. Department of Pharmacology-Physiology, Université de Sherbrooke, Sherbrooke, Quebec, Canada 2. Domain Therapeutics North America Inc., Montreal, Quebec, Canada 3. Université Claude Bernard - Lyon, Faculté de Pharmacie, Lyon, France 4. Department of Biochemistry and Molecular Medicine, Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, Quebec, Canada " About Ana Lilia Moreno Salinas "I am currently part of a dynamic research team dedicated to advancing the understanding of G protein-coupled receptors (GPCRs), with a particular focus on the adhesion GPCRs (aGPCRs) family. My expertise lies in exploring the biological properties and signaling pathways activated by aGPCRs, investigating their roles in both normal physiological and pathological conditions. Our research aims to leverage this knowledge to identify novel pharmacological targets and contribute to the development of innovative treatments for a range of diseases, including psychiatric disorders and cancer." Ana Lilia Moreno Salinas on the web ResearchGate LinkedIn < Previous Session Next Session >

Full Agenda Adhesion GPCR workshop 2024 CINVESTAV, Mexico City, Mexico October 23-25 Download PDF Program HERE < Back to Full Agenda Board meeting/General assembly Coming Soon < Previous Session Next Session >

Full Agenda Adhesion GPCR workshop 2024 CINVESTAV, Mexico City, Mexico October 23-25 Download PDF Program HERE < Back to Full Agenda Session IX Technology capsule: Light on aGPCR signaling and function Coming Soon < Previous Session Next Session >

Full Agenda Adhesion GPCR workshop 2024 CINVESTAV, Mexico City, Mexico October 23-25 Download PDF Program HERE < Back to Full Agenda State of the Art Talk Mechanotransduction Coming Soon < Previous Session Next Session >

Full Agenda Adhesion GPCR workshop 2024 CINVESTAV, Mexico City, Mexico October 23-25 Download PDF Program HERE < Back to Full Agenda Dr. GPCR Community Presentation About Monserrat Avila Zozaya "My doctoral research was focused on investigating the cellular effects of missense lung cancer-mutations in the G-protein-coupled receptor Autoproteolysis-Inducing (GAIN) domain of Latrophilin 3 receptor under the mentorship of Dr. Antony Boucard. I am currently a postdoctoral researcher fellow in Dr. Kathleen Caron's laboratory at UNC. My research focuses on understanding the molecular mechanisms of adhesion GPCRs (aGPCRs) in lymphatic endothelial cells (LECs), a cellular model with unique junction arrangements where aGPCRs are mainly unexplored. " Monserrat Avila Zozaya on the web LinkedIn Caron Lab Antony Boucard Lab Dr. GPCR < Previous Session Next Session >

Full Agenda Adhesion GPCR workshop 2024 CINVESTAV, Mexico City, Mexico October 23-25 Download PDF Program HERE < Back to Full Agenda Session VII Physiological and pathological roles of AGPCRs in the nervous system Adhesion G protein-coupled receptor latrophilin-3 (ADGRL3) modulation of dopaminergic neurotransmission Nicole Perry-Hauser GPR110 modulates anxiety-like behaviors and memory function in mice potentially through neuronal and neuroimmune alterations during neurodevelopment Mariam Melkumyan Adhesion G protein-coupled receptor ADGRG1 promotes protective microglial response in Alzheimer’s disease Xianhua Piao Uncovering the signaling pathway of the ADGRA homolog Remoulade in Drosophila Beatriz Blanco Redondo The Adhesion GPCR Latrophilin Interacts With The Notch Pathway To Control Germ Cell Proliferation Willem Berend Post Adhesion G protein-coupled receptor latrophilin-3 (ADGRL3) modulation of dopaminergic neurotransmission Nicole Perry-Hauser Abstract Only available for AGPCR 24 Attendees Authors & Affiliations "Nicole A. Perry-Hauser1,2, Arturo Torres Herraez1,2, Dan Lowes1,2, Ying Zhu1,2, Siham Boumhaouad1,3, Eugene V. Mosharov1,2,4, David Sulzer1,2,4, Christoph Kellendonk1,2, and Jonathan A. Javitch1,2 1Departments of Psychiatry and Molecular Pharmacology and Therapeutics, Columbia University, New York, NY 10032; 2Division of Molecular Therapeutics, New York State Psychiatric Institute, New York, NY 10032; 3 Physiology and Physiopathology, Faculty of Sciences, Mohammed V University, Rabat 1014, Morocco; 4Department of Neurology, Columbia University, New York, NY 10032" About Nicole Perry-Hauser "I am an associate research scientist endeavoring to build a productive, independent scientific research career in adhesion G protein-coupled receptor (aGPCR) biology. My long-term research interests involve resolving signaling pathways downstream of aGPCRs and establishing how/if these receptors’ adhesive properties influence signaling events, and in turn whether signaling impacts synapse formation and neuronal wiring. I initially became interested in GPCR signal transduction during my graduate training in the Department of Pharmacology at Vanderbilt University where I studied under the co-mentorship of Dr. Vsevolod V. Gurevich and Dr. Tina M. Iverson. I then pursued a postdoctoral research position under the mentorship of Dr. Jonathan A. Javitch in the Department of Psychiatry at Columbia University Irving Medical Center." Nicole Perry-Hauser on the web LinkedIn Research Gate Pubmed Dr. GPCR GPR110 modulates anxiety-like behaviors and memory function in mice potentially through neuronal and neuroimmune alterations during neurodevelopment Mariam Melkumyan Abstract "GPR110, an adhesion G protein coupled receptor (GPCR), is widely expressed in developing brains but diminishes in adult stage except in the hippocampus, a region involved in learning and memory. Ligand-induced GPR110 signaling stimulates neurogenesis and synaptogenesis during development, and the absence of the ligand-induced signaling causes object recognition and spatial memory deficits in adulthood and increased neuroinflammatory responses. Nevertheless, the role of GPR110 signaling in behavioral consequences has not been fully explored. This study aimed to understand the effects of GPR110 on mouse behaviors in relation to neurodevelopmental and neuroimmune gene and protein expression. Anxiety and memory function were tested using both male and female mice at 5-6 month of age. GPR110 knockout (KO) mice displayed trends for increased anxiety-like behaviors in the elevated plus maze test and in the open field test. Memory tests, including the novel object test and the radial 8-arm maze showed worsened spatial and reference memory in the GPR110 KO mice compared to wildtype mice. The y-maze showed a significant sex by genotype interactions with GPR110 KO male mice having increased number of correct alterations and errors, while the GPR110 KO females had fewer correct alterations and errors. RNAseq data indicated significantly impaired developmental gene expression for neuronal differentiation, axonogenesis, and synaptogenesis, as well as altered neuroinflammatory marker expression in GPR110 KO mouse brains. Further studies exploring the protein expression and neural activity of these mouse brain will give insight on the mechanism underlying the behavioral consequences associated with the GPR110 receptor. " Authors & Affiliations "Joel Toro, Bill Huang, Hee-Yong Kim Laboratory of Molecular Signaling, National Institute of Alcohol Abuse and Alcoholism, NIH" About Mariam Melkumyan "Mariam Melkumyan is a postdoctoral fellow at the Laboratory of Molecular Signaling studying the role of GPR110 in neurotransmission and neuroimmune activity involved in learning and memory, anxiety, and alcohol use. Mariam, originally from Armenia, completed her bachelor's degree in Neuroscience at American University in Washington, DC and her dual-title PhD in Neuroscience and Clinical and Translational Sciences at Penn State College of Medicine in Hershey, PA. Mariam started her postdoctoral training in February 2024 and is hoping to become an academic professor and mentor the next generation of scientists." Mariam Melkumyan on the web LinkedIn Google Scholar Adhesion G protein-coupled receptor ADGRG1 promotes protective microglial response in Alzheimer’s disease Xianhua Piao Abstract Only available for AGPCR 24 Attendees Authors & Affiliations "Beika Zhu, UCSF Andi Wangzhou, UCSF Diankun Yu, UCSF" About Xianhua Piao "My research follows the bedside-to-bench-to-bedside paradigm. I began by characterizing an autosomal recessive human brain malformation that my mentor Chris Walsh and I termed bilateral frontoparietal polymicrogyria (BFPP). Together, we discovered that germline loss-of-function mutations in the adhesion G-protein-coupled receptor (aGPCR) GPR56, also called ADGRG1, cause BFPP. Over time, this discovery transformed our understanding of polymicrogyria and yielded a molecular diagnosis (https://blueprintgenetics.com/tests/panels/malformations/polymicrogyria-panel). Following the thread of GPR56 biology also led me to a vigorous bench research program. We've steadily uncovered a remarkable diversity of cell type- and ligand-specific functions of GPR56 during various stages of brain development and homeostasis, including cortical patterning, central nervous system myelin formation and repair, and synaptic refinement. In doing so, I undertook a pioneering role in deorphanizing aGPCRs and revealing mechanisms underlying aGPCR-mediated cell-cell and cell-matrix interactions. This basic science also provides foundational knowledge for drug discoveries in targeting aGPCRs, the second largest human GPCR family." Xianhua Piao on the web Piao Lab Uncovering the signaling pathway of the ADGRA homolog Remoulade in Drosophila Beatriz Blanco Redondo Abstract "The Drosophila genome contains five loci encoding adhesion G-protein coupled receptors (aGPCRs). Phylogenetic analysis revealed that the remoulade (remo) gene is a homologue of the vertebrate aGPCR ADGRA family, sharing the same overall receptor domain structure. In vivo expression profiling has shown Remo expression in the central (CNS) and peripheral nervous systems (PNS) of third-instar larvae (L3) and adults. In L3 PNS specimen Remo is expressed in a subset of neurons expressing the DEG/ENaC channel pickpocket (PPK), which is involved in transduction of sensory information like nociception. remoKO larvae and animals, in which remo was knocked down in ppk-neurons through RNA interference, show a higher nocifensive response compared to wildtype remorescue controls indicating that remo is required in PPK-neurons for this behaviour. Furthermore, with the aim to analyse the biochemical properties of Remo, we performed immunoprecipitation analysis. We found that the receptor is cleaved despite the lack of a consensus GPS sequence. Hence, Remo is proteolytically processed, either by the GAIN domain or an alternative protease that cleaved Remo near the GPS. We also aimed at identifying the signaling pathway that Remo is involved in. The mammalian Remo homolog ADGRA2/Gpr124 cooperates with other GPCRs of the Frizzled family, and the transmembrane proteins RECK and Lrp5/6. Collectively these proteins form a cell surface complex that acts as a recognition platform for Wnt ligands. Knowledge of the structural dynamics of this complex is limited and pharmacological and in vivo systems that would allow its characterization are scarce. Remo may serve a role in this peculiar signaling pathway and require further analysis." Authors & Affiliations "Auger, Genevieve Marie1, Bigl, Marina1, America, Michelle2, Vanhollebeke Benoit2, Langenhan Tobias1 1Rudolf Schönheimer Institute of Biochemistry, Division of General Biochemistry, Medical Faculty, Leipzig University, Johannisallee 30, 04103 Leipzig, Germany 2Laboratory of Neurovascular Signaling, Department of Molecular Biology, ULB Neuroscience Institute, Université libre de Bruxelles (ULB), Gosselies B-6041, Belgium" About Beatriz Blanco Redondo "I studied Biomedicine at the University of Barcelona. After my bachelors, I moved to Germany where I obtained my Master’s of Science and PhD degree in Dr. Buchner’s group at the University of Wuerzburg. Shortly after receiving my PhD, I joined Dr. Neil Shneider’s group as a postdoctoral research scientist at Columbia University, New York, where I studied the mechanisms of motor neuron degeneration in Amyotrophic Lateral Sclerosis (ALS). In 2017, I joined the group of Prof. Langenhan where I am studying and characterizing newly generated adhesion GPCR receptors in Drosophila as a model organism for future pharmacological applications." Beatriz Blanco Redondo on the web Blanco-Redondo Lab LinkedIn Google Scholar X (Twitter) The Adhesion GPCR Latrophilin Interacts With The Notch Pathway To Control Germ Cell Proliferation Willem Berend Post Abstract Only available for AGPCR 24 Attendees Authors & Affiliations "Groß Victoria Elisabeth 1, Matúš Daniel 2,3, Kaiser Anette 4, Ließmann Fabian 5, Meiler Jens 5, Schöneberg Torsten 2,6, Prömel Simone 1 1 Institute of Cell Biology, Department of Biology, Heinrich Heine University Düsseldorf, Düsseldorf, Germany 2 Rudolf Schönheimer Institute of Biochemistry, Medical Faculty, Leipzig University, Leipzig, Germany 3 Department of Molecular and Cellular Physiology, Stanford University, Stanford CA, USA 4 Department of Anaesthesiology and Intensive Care, Medical Faculty, Leipzig University, Leipzig, Germany 5 Institute for Drug Discovery, Faculty of Medicine, Leipzig University 6 School of Medicine, University of Global Health Equity, Kigali, Rwanda" About Willem Berend Post "Willem Berend Post is a PhD student in Cell Biology at Heinrich Heine University in Düsseldorf, Germany. His research focuses on the relevance of aGPCRs in physiology and signaling using both in vitro and in vivo approaches." Willem Berend Post on the web Cell Biology LinkedIn < Previous Session Next Session >

Full Agenda Adhesion GPCR workshop 2024 CINVESTAV, Mexico City, Mexico October 23-25 Download PDF Program HERE < Back to Full Agenda Departure < Previous Session Next Session >

Full Agenda Adhesion GPCR workshop 2024 CINVESTAV, Mexico City, Mexico October 23-25 Download PDF Program HERE < Back to Full Agenda Lunch < Previous Session Next Session >

Full Agenda Adhesion GPCR workshop 2024 CINVESTAV, Mexico City, Mexico October 23-25 Download PDF Program HERE < Back to Full Agenda Session VI AGPCRs shaping the nervous system The adhesion GPCR ADGRV1 Controls Glutamate Homeostasis in Hippocampal Astrocytes Supporting Neurons – First Insights into to Pathophysiology of ADGRV1-associated Epilepsy Uwe Wolfrum ADGRCs in glutamatergic synapse formation, maintenance and degeneration Yimin Zou Antibody-drug conjugates targeting CD97 in glioblastoma Suzanne Gross The adhesion GPCR ADGRV1 Controls Glutamate Homeostasis in Hippocampal Astrocytes Supporting Neurons – First Insights into to Pathophysiology of ADGRV1-associated Epilepsy Uwe Wolfrum Abstract "ADGRV1 is the largest member of adhesion G protein-coupled receptor (aGPCR) family. Mutations in ADGRV1 have been linked not only to Usher syndrome (USH), which causes deaf-blindness, but recently also to epilepsy. While the USH defects are attributed to the loss of fiber links between adjacent membranes formed by the extracellular domain of ADGRV1 in the sensroy cells of the inner ear and eye, the pathomechanisms leading to epilepsy remain in the brain elusive to date. Here, we investigated the specific functions of ADGRV1 in astrocytes, where it is most highly expressed in the CNS, more than any other aGPCRs. Affinity proteomics showed the interaction of ADRGV1 with proteins enriched in astrocytes. Dysregulation of cellular processes important in astrocyte function were indicated by different transcriptomes of patient-derived cells and Adgrv1-deficent mouse hippocampi. Altered morphology and reduced numbers of astrocytes in the hippocampus of Adgrv1-deficent mice. Monitoring the glutamate uptake in a colorimetric assay and by live cell imaging of a genetic glutamate reporter consistently showed that glutamate uptake from the extracellular environment is significantly reduced in Adgrv1-deficent astrocytes. Expression analyses of key enzymes of the glutamate glutamine cycle and the glutamate metabolism indicated imbalanced glutamate homeostasis in Adgrv1-deficient astrocytes. We additionally provide evidence that the supportive function of astrocytes in neuronal development also relies on ADGRV1 expression. Finally, we show that ADGRV1 regulates the number of synapses during neurite development. Our data collectively provides first insights in the molecular pathophysiology underlying the development of epilepsy associated with mutations in ADGRV1." Authors & Affiliations "Güler, Baran E., Institute of Molecular Physiology, Johannes Gutenberg University Mainz, Germany Zorin, Mark, Institute of Molecular Physiology, Institute of Developmental Biology and Neurobiology, Johannes Gutenberg University Mainz, Germany Linnert Joshua, Institute of Molecular Physiology, Johannes Gutenberg University Mainz, Germany Nagel-Wolfrum, Kerstin, Institute of Molecular Physiology, Institute of Developmental Biology and Neurobiology, Johannes Gutenberg University Mainz, Germany" About Uwe Wolfrum "Wolfrum, Uwe, Univ.-Prof. Dr. rer. nat., holds since 1999 a full professorship for Zoology and Cell biology at the Johannes Gutenberg University (JGU) Mainz, Germany. He studied Biology/Diploma in Bayreuth and Regensburg. He received his Dr. rer. nat. with summa cum laude at the Univ. Regensburg. After a fellowship of the German Research Council (DFG) at the Mayo Clinic, Rochester, MN, he obtained his habilitation (Vena legendi) in 1998 at the Univ. of Karlsruhe/University of Karlsruhe/Institute of Technology (KIT), Germany. Since 1999 he teaches and mentors students in “Zoology” and “Cell Biology” at the JGU Mainz. He serves on the scientific advisory boards of foundations and in editorial boards of several journals. After his move to the JGU Mainz, he has further emphasized his scientific interests in “Cilia Biology” and "Photoreceptor Cell Biology" in health and disease. His lab is well-known in the research on the cellular function of proteins and their networks related to Usher syndrome (USH) the most common form of combined hereditary deaf blindness. For his contribution towards defining the role of USH proteins in photoreceptor cell biology he received in 2008 the Directors Award from the Foundation Fighting Blindness (FFB, Baltimore). In recent years, his lab succeeded in translating their findings from basic research into the preclinical evaluation of therapeutic strategies utilizing specifically designed animal models and human cell models (organoids). Both the basic research team and the therapy team have taken part and continue to participate in national and international consortia, such as the EU 7th Framework “SYSCILIA” consortium, the FFB Program Project Award on “Targeting proteostasis and protein quality control in photoreceptors” or the DFG Research Unit 2149 on “Elucidation of adhesion-GPCR signaling” and priority program 2127 on “Gene and cell-based therapies to counteract neuroretinal degeneration”." Uwe Wolfrum on the web the Wolfrum Lab! ADGRCs in glutamatergic synapse formation, maintenance and degeneration Yimin Zou Abstract "ADGRCs (Celsr1-3) are components of the conserved planar cell polarity (PCP) pathway, which establishes and maintains cell and tissue polarity along the tissue plane in all tissues. Work from our lab showed that the PCP components, including ADGRC2 and ADGRC3, are localized in the developing and adult synapses and interact with synaptic scaffold proteins and glutamate receptors and are responsible for the formation and stability of the vast majority of glutamatergic synapses in the mammalian brain. Initial impairment of synaptic functions, which occurs early in Alzheimer’s disease, and subsequent massive loss of synapses are closely correlated with the decline of cognitive function. We showed that oligomeric Aβ binds to ADGRC3 on the same domain required for the interaction with Frizzled3, weakens their interaction and assists Vangl2 in disassembling synapses. Conditionally knocking out Ryk, required for Vangl2 function, protected synapses and preserved cognitive function in a mouse model for Alzheimer’s. Massive synapse loss in the prefrontal cortex is a hallmark of massive depressive disorder. Injection of low-dose ketamine, an antidepressant, can lead to acute (in several hours) and sustained (up to several weeks) antidepressive effects. Restoration of synaptic connections induced by low-dose ketamine has been found associated with the sustained antidepressive effects. We showed that ADGRC2 and ADGRC3 are required for the restoration of glutamatergic synapses in prefrontal cortical neurons of chronically stressed animals and their behavioral remission induced by low-dose ketamine. I will also present ongoing work on the signaling mechanisms of how ADGRCs regulate synapse formation, maintenance and plasticity." About Yimin Zou "I received Ph.D from University of California at Davis and San Diego in 1995 and then postdoctoral training from University of California, San Francisco in 2000. I was an assistant and then associate professor with tenure at the University of Chicago from 2000 to 2006 and moved to University of California San Diego as an Associate Professor in 2006. I became full professor in 2011 and Vice Chair of the Neurobiology Department at UC San Diego in 2012. I served as the Chair of the Neurobiology Department at UC San Diego from 2014 to 2017. My research focus is the mechanisms of neural circuit development, function and disease." Yimin Zou on the web UC San Diego Antibody-drug conjugates targeting CD97 in glioblastoma Suzanne Gross Abstract "Glioblastoma (GBM) is the most common and aggressive primary brain malignancy. Several adhesion G protein-coupled receptors (aGPCRs) have recently been shown to play critical roles in GBM biology. We showed that CD97 (ADGRE5), in particular, drives tumor growth via effects on GBM stem cell self-renewal and metabolism, but also has a therapeutically favorable expression pattern: it is highly expressed in all GBM specimens, but is absent from healthy brain tissue. To exploit this expression profile, we have developed antibody-drug conjugates (ADCs) targeting CD97, by screening a synthetic human antibody library. We initially tested the ADC using in vitro WST-8 viability assays in human GBM cell lines and cell types that lack CD97. We observed significantly lower LD50 values in patient-derived and U87 GBM cell cultures vs. CD97-lacking cells. We also found significantly lower LD50 values when treating human GBM cells with the ADC (0.6788 nM), as compared to control ADC targeting RSV glycoprotein F (19.964 nM). In vivo intratumoral administration of the ADC in patient-derived GBM xenografts in the brain of immunodeficient mice resulted in significant reduction of tumor growth and prolongation of survival of host mice. Collectively, these data suggest that ADCs targeting CD97 impair tumor growth in preclinical GBM models and are promising candidates for future clinical trials." Authors & Affiliations "Groff, Karenna; Donaldson, Hayley; Anderson, Sebastian; Pitti, Kiran; Wang, Shuai; Park, Christopher; Hattori, Takamitsu; Koide, Shohei; Placantonakis, Dimitris New York University Grossman School of Medicine" About Suzanne Gross "Suzanne Gross is a medical student at Albert Einstein College of Medicine. She is currently performing a year-long research fellowship in the lab of Dr. Dimitris Placantonakis at New York University Grossman School of Medicine. She is working on developing novel therapeutics for glioma, in particular targeting adhesion-GPCR CD97 (ADGRE5)." Suzanne Gross on the web Placantonakis Lab < Previous Session Next Session >

Full Agenda Adhesion GPCR workshop 2024 CINVESTAV, Mexico City, Mexico October 23-25 Download PDF Program HERE < Back to Full Agenda Coffee Break with pastries annoucement of the aGEM award < Previous Session Next Session >

Full Agenda Adhesion GPCR workshop 2024 CINVESTAV, Mexico City, Mexico October 23-25 Download PDF Program HERE < Back to Full Agenda Session I Tethered agonist-dependent/independent activation mechanism in AGPCRs Signaling Properties of ADGRL3 Signe Mathiasen An ECR-Mediated and TA-independent Mechanism of aGPCR Activation: Direct Communication of Extracellular Region with Transmembrane Domain in a Holo-Adhesion GPCR Demet Araç Structural Insights into the Activation Mechanisms of Adhesion GPCRs Yan Zhang Heterogeneity of Tethered Agonist Signaling in Adhesion G Protein-Coupled Receptors Andrew Dates Discriminating between the extracellular scaffolding and G protein signaling roles of GPR56/ADGRG1 via the characterization of a non-cleavable point mutant knock-in mouse, H381S Frank Kwarcinski Tethered Peptide Activation Mechanism of Adhesion GPCRs Peng Xiao Signaling Properties of ADGRL3 Signe Mathiasen Abstract Only available for AGPCR 24 Workshop Attendees Authors & Affiliations "Rosell, Júlia (1) Holmkvist, Jesper L. (1) Arastoo, Mohammad Reza (1) Vejre, Phillip C. (1) Regmi, Rajesh (1) Perry-Hauser, Nicole A. (2) Bendix, Poul Martin (3) Javitch, Jonathan A. (2) Mathiasen, Signe (1) 1. Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark. 2. Departments of Psychiatry and Molecular Pharmacology and Therapeutics, Columbia University Vagelos College of Physicians and Surgeons, New York, New York, USA; Division of Molecular Therapeutics, New York State Psychiatric Institute, New York, New York, USA 3. Niels Bohr Institute, Faculty of Natural Sciences, University of Copenhagen, Copenhagen, Denmark" About Signe Mathiasen "2022-present Assistant Professor (Tenure Track) and Group Leader Department of Biomedical Sciences, University of Copenhagen. 2020 – 2022: Assistant Professor Department of Biomedical Sciences, University of Copenhagen. 2014-2021: Postdoc / Assistant Professor Department of Psychiatry, Columbia University, New York, USA. New York State Psychiatric Institute, Research Foundation for Mental Hygiene, New York, USA. Postdoc Supervisor Professor Jonathan Javitch 2013: PhD in Nanoscience/Biophysics. Department of Chemistry, University of Copenhagen, Copenhagen Denmark. PhD Supervisor Professor Dimitrios Stamou." Signe Mathiasen on the web University of Copenhagen Mathiasen Group An ECR-Mediated and TA-independent Mechanism of aGPCR Activation: Direct Communication of Extracellular Region with Transmembrane Domain in a Holo-Adhesion GPCR Demet Araç Abstract "According to the Tethered Agonist (TA)-mediated model of aGPCR activation, the ECR acts as a protective cap for the TA peptide to hide it within the GAIN domain. However, several recent observations suggest that other mechanisms of aGPCR activation are possible. For example, some aGPCRs do not undergo autoproteolysis, which is required for TA release. Even the aGPCRs that are cleaved do not always require cleavage for mediating some aspects of wild type functions. It has been suggested that the TA can regulate receptor signaling without coming out of the GAIN domain or by being partially exposed, however the recent TA-bound 7TM structures of multiple aGPCRs showed that the critical phenylalanine residue and other important TA residues have to reach deep into the 7TM orthosteric pocket for receptor activation, suggesting that non-release or partial release of the TA is unlikely to activate the receptor. In this talk, I summarize accumulating data from our lab and the aGPCR field that suggests an additional model in which the conformation of the Extracellular Region (ECR) has a direct role in modulating the 7TM signaling, independently of TA-mediated activation. Our results provide evidence for the ECR-mediated activation of aGPCR as a complementary mechanism for the TA-mediated activation of aGPCRs. Many biological forces are smaller than 200 pN, the force that is needed to separate the TA from the GAIN domain. To sense these smaller forces, and to regulate aGPCR function on and off, a mechanism that does not depend on ECR dissociation and TA exposure might be at work. At low force or no force conditions, aGPCR may be reversibly regulated by binding and dissociation of a ligand to the ECR without ECR shedding and TA exposure. In this ECR-mediated mechanism of activation, the ECR-7TM communication is altered by transient interactions between ECR and 7TM. The TA peptide remains at its original position and is not involved in signaling. Because the TA-mediated mechanism is a “one and done” mechanism that is irreversible and prevents the receptor from going back to its inactive resting state, the ECR-mediated mechanism may operate in situations where a reversible regulation is needed. The ECR-mediated mechanism may also enable responding to compressing forces on the receptor, that directly “push” on the protein. In cases where a large “pulling” force is executed on the ECR, the ECR may be removed from the 7TM releasing the tethered agonist and activating the aGPCR irreversibly but acutely. ECR-mediated mechanism opens new possibilities for drugging aGPCRs. Future work that dissects different activation mechanisms of aGPCRs in different physiological contexts will shed light on this fascinating family of receptors. " Authors & Affiliations "Kordon Szymon P.1, 2, Cechova Kristina3, Bandekar Sumit J.1, 2, Ethan Dintzner1, 2, Leon Katherine1, 2, Dutka Przemysław1, Siffer Gracie3, Kossiakoff Anthony A.1, Sando Richard 4, Vafabakhsh Reza3, Araç Demet1, 2 1. Department of Biochemistry and Molecular Biology, The University of Chicago, Chicago; 2. Neuroscience Institute, Institute for Biophysical Dynamics, and Center for Mechanical Excitability, The University of Chicago, 3. Department of Molecular Biosciences, Northwestern University; 4. Vanderbilt University" About Demet Araç "Demet was an undergraduate at Bilkent University in Turkey, where she majored in Molecular Biology and Genetics. She moved to the University of Texas Southwestern Medical Center at Dallas in 2000 to work with Dr. Jose Rizo-Rey as a graduate student to elucidate the mechanisms of neurotransmitter release. After finishing her graduate training, she joined Dr. Axel Brunger’s lab at Stanford University to study the structure and function of cell-adhesion proteins at the synapse. In 2013, Demet began her independent research career at the University of Chicago within the Department of Biochemistry and Molecular Biology." Demet Araç on the web Araç Laboratory at UChicago X (Twitter) Structural Insights into the Activation Mechanisms of Adhesion GPCRs Yan Zhang Abstract "Adhesion G protein-coupled receptors (aGPCRs) represent a relatively understudied class of GPCRs, yet they are implicated in various physiological and pathological processes. A comprehensive understanding of their signaling mechanisms is essential for the development of modulators for diseases such as cancer, immune disorders, and neurological conditions. In our previous work, we reported the structures of a prototypical aGPCR CD97 in both inactive and active states, revealing a compact inactive conformation and significant conformational changes upon activation, particularly on the intracellular and extracellular sides. We also identified key motifs involved in aGPCR activation. Recently, we have elucidated the high-resolution structures of GPR97 transitioning from its inactive state to both G protein-coupled and arrestin-coupled states. Our findings highlight pronounced conformational shifts across the receptor, especially involving transmembrane helices TM5 and TM6. Notably, we discovered that activation by small molecule ligands and peptide tethered ligands induces markedly different mechanisms of ligand recognition, activation, and coupling, resulting in differential signaling pathways. These insights contribute to a deeper understanding of the signaling mechanisms of aGPCRs, which could inform future therapeutic strategies." Authors & Affiliations "Chunyou Mao, Zhejiang University" About Yan Zhang "Zhang Yan, Changjiang Scholar of the Ministry of Education, Qiushi Distinguished Professor, Deputy Dean of the School of Basic Medicine, Deputy Director of the Center for Innovative Drug Research, Zhejiang University, Director of Cryo-electron Microscopy Center of Liangzhu Laboratory, Winner of Tan Jiazhen Life Innovation Award and Shulan Medical Youth Award." Yan Zhang on the web Zhejiang University Heterogeneity of Tethered Agonist Signaling in Adhesion G Protein-Coupled Receptors Andrew Dates Abstract Only available for AGPCR 24 Workshop Attendees Authors & Affiliations "Daniel T.D. Jones (Harvard Medical School); Jeffrey S. Smith (Harvard Medical School, Brigham and Women's Hospital); Meredith A. Skiba (Harvard Medical School); Maria F. Rich (University of Cincinnati School of Medicine); Maggie M. Burruss (Harvard Medical School); Andrew Kruse (Harvard Medical School); Stephen C. Blacklow (Harvard Medical School)" About Andrew Dates "Drew Dates received his B.S. in Biological Chemistry from Carnegie Mellon University in 2018. As an undergraduate, he studied opioid receptor trafficking and G protein conformational dynamics in the laboratories of Manojkumar Puthenveedu and Roger Sunahara, respectively. As part of his doctoral work in the Blacklow laboratory at Harvard Medical School, Drew studied structure-function relationships in the Adhesion Family of GPCRs." Andrew Dates on the web Harvard Medical School Discriminating between the extracellular scaffolding and G protein signaling roles of GPR56/ADGRG1 via the characterization of a non-cleavable point mutant knock-in mouse, H381S Frank Kwarcinski Abstract Only available for AGPCR 24 Workshop Attendees Authors & Affiliations ""Tyler F. Bernadyn, Mariane Nascimento, Xinyi Lu, Pauline L. Pan, Michael Holinstat and Gregory G. Tall Department of Pharmacology, University of Michigan "" About Frank Kwarcinski "I am research faculty within the department of Pharmacology at the University of Michigan. I work under the supervision of Dr. Gregory Tall and our research primarily focuses on the structural and biochemical characterization of adhesion GPCRs (AGPCR) for mechanism of action and pathogenesis studies. We utilize several genetically modified mouse models to investigate requirements for receptor activator and continuously work to identify novel chemical modulators of AGPCRs through assay development and high-throughput screening efforts. I have previous work experience at two separate contract research organizations centered on assay development, and I am formally trained as a chemical biologist." Frank Kwarcinski on the web LinkedIn Tethered Peptide Activation Mechanism of Adhesion GPCRs Peng Xiao Abstract Only available for AGPCR 24 Workshop Attendees About Peng Xiao "I joined Prof. Jin-Peng Sun’s Lab since I graduated from Shandong University in 2012, and worked under the guidance of Prof. Sun as a postdoc/research associate/assistant professor. Since then, I have been working on dissecting the three-dimensional architecture and underlying molecular signaling mechanism of GPCR using cryo-electron microscopy (cryo-EM). So far, I have published 20 peer-reviewed papers as correspondence (or co- correspondence) or first (or co-first) authors, among which, four papers were published in Nature (2022a, 2022b, 2021, 2020); one paper was published in Cell (2021); on paper was published in Science (2023); two papers were published in Nat Chem Biol. (2022, 2018)." Peng Xiao on the web ResearchGate < Previous Session Next Session >

Full Agenda Adhesion GPCR workshop 2024 CINVESTAV, Mexico City, Mexico October 23-25 Download PDF Program HERE < Back to Full Agenda Plenary Lecture Identification and Functional Characterization of Adhesion GPCRs As Steroid Hormone Receptors and Hearing and Balance Receptors Coming Soon < Previous Session Next Session >

Full Agenda Adhesion GPCR workshop 2024 CINVESTAV, Mexico City, Mexico October 23-25 Download PDF Program HERE < Back to Full Agenda Registration & Welcoming Remarks < Previous Session Next Session >

Full Agenda Adhesion GPCR workshop 2024 CINVESTAV, Mexico City, Mexico October 23-25 Download PDF Program HERE < Back to Full Agenda Closing remarks < Previous Session Next Session >

Full Agenda Adhesion GPCR workshop 2024 CINVESTAV, Mexico City, Mexico October 23-25 Download PDF Program HERE < Back to Full Agenda Session II AGPCR signaling pathways and trafficking Localization of putative ligands for adhesion G protein-coupled receptors in mouse tissues. Yuling Feng The ADGRF5/GPR116 receptor is a key regulator of lymphatic endothelial cell identity and function Monserrat Avila Zozaya Adhesion GPCR BAI1/ADGRB1 can block IGF1R-mediated growth signalling, increase radiosensitivity and augment survival in medulloblastoma. Erwin G. Van Meir Site Specific N-Glycosylation Of The N-Terminal Fragment Of ADGRG6 Drives Proteolytic Processing, Trafficking And Signalling Pal Kasturi Localization of putative ligands for adhesion G protein-coupled receptors in mouse tissues. Yuling Feng Abstract Only available for AGPCR 24 Workshop Attendees Authors & Affiliations "Shen,Tingzhen; Bernadyn,Tyler; Kwarcinski, Frank; Gandhi, Riya; Tall, Greg. University of Michigan." About Yuling Feng "I am currently a postdoctoral research fellow working with aGPCR pharmacology and physiology in rodents." Yuling Feng on the web LinkedIn The ADGRF5/GPR116 receptor is a key regulator of lymphatic endothelial cell identity and function Monserrat Avila Zozaya Abstract Only available for AGPCR 24 Workshop Attendees Authors & Affiliations "Serafin D. Stephen, Caron Kathleen M Department of Cell Biology and Physiology at UNC Chapel Hill 111 Mason Farm Road, MBRB, CB 7545. University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA 27599" About Monserrat Avila Zozaya "My doctoral research was focused on investigating the cellular effects of missense lung cancer-mutations in the G-protein-coupled receptor Autoproteolysis-Inducing (GAIN) domain of Latrophilin 3 receptor under the mentorship of Dr. Antony Boucard. I am currently a postdoctoral researcher fellow in Dr. Kathleen Caron's laboratory at UNC. My research focuses on understanding the molecular mechanisms of adhesion GPCRs (aGPCRs) in lymphatic endothelial cells (LECs), a cellular model with unique junction arrangements where aGPCRs are mainly unexplored. " Monserrat Avila Zozaya on the web LinkedIn Caron Lab Antony Boucard Lab Dr. GPCR Adhesion GPCR BAI1/ADGRB1 can block IGF1R-mediated growth signalling, increase radiosensitivity and augment survival in medulloblastoma. Erwin G. Van Meir Abstract Only available for AGPCR 24 Attendees Authors & Affiliations "Yamamoto, Takahiro 1,2*, De Araujo Farias, Virginea 1, Zhu, Dan3; Kuranaga, Yuki1, Parag, Rashed Rezwan 1,4,, Osuka, Satoru1,5 1 Department of Neurosurgery, School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA. 2 Department of Neurosurgery, Kumamoto University, Kumamoto, Japan 3 Department of Neurosurgery, Emory University School of Medicine, Atlanta, Georgia, USA 4 Graduate Biomedical Sciences, University of Alabama at Birmingham (UAB), Birmingham, Alabama, USA 5 O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham (UAB), Birmingham, Alabama, USA " About Erwin G. Van Meir "Dr. Erwin Van Meir is a professor in the UAB Department of Neurosurgery. He was trained in molecular biology at the Universities of Fribourg and Lausanne, Switzerland where he obtained his Ph.D. in 1989. Dr. Van Meir pursued postdoctoral work at the Ludwig Institute for Cancer Research in San Diego and joined the faculty of Emory University in 1998. His research interest lies in understanding the molecular basis for human tumor development and how to use this knowledge to devise new therapeutics that will improve patient survival. Van Meir’s research examines how genetic alterations and hypoxia induce changes in cell biology that promote tumor formation with particular emphasis on adhesion GPCRs ADGRB1 and ADGRB3. Van Meir has developed novel therapeutic approaches for cancer using oncolytic adenoviruses and anti-angiogenic molecules and is currently developing novel small molecule inhibitors of the hypoxia-inducible factor pathway and the epigenetic reader MBD2 (methyl CpG binding protein 2). His research aims to translate these novel agents to testing in clinical trials with the hope to develop novel medicines for cancer treatment." Erwin G. Van Meir on the web Google Scholar Site Specific N-Glycosylation Of The N-Terminal Fragment Of ADGRG6 Drives Proteolytic Processing, Trafficking And Signalling Pal Kasturi Abstract "ADGRG6 is a member of the adhesion G-protein-coupled receptor (aGPCR) family, known to play a role in myelination, placentation, blood vessel, and inner ear development. Like many other aGPCRs, ADGRG6 undergoes autoproteolysis at the GPCR-autoproteolysis site (GPS) enclosed within the larger GAIN domain to generate the N-terminal (NTF) and C-terminal fragments (CTF). These cleaved fragments join to form the heteromeric ADGRG6 receptor complex. ADGRG6 NTF has multiple extracellular domains like CUB, PTX, SEA, hormone binding domain, and the GAIN domain, which regulate G-protein signaling by binding to extracellular matrix proteins and mechanotransduction. The short stachel sequence at the extreme N-terminal end of the CTF functions as a tethered agonist to activate cAMP signaling. GPCR signaling and trafficking can be regulated by several different post-translational modifications (PTM). Stehlik et al. have reported that ADGRG6 expressed in lipopolysaccharide stimulated human umbilical vein endothelial cells is N-glycosylated. However, it is unclear which domains of ADGRG6 are N-glycosylated and how this might affect the overall molecular pharmacology of the receptor. Furthermore, are there spatial roles of N-glycosylation in ADGRG6 processing, trafficking, signalling and in-vivo functions? To address these gaps in knowledge, we used biochemical and cell-biological approaches using cell-lines overexpressing wild-type and N-glycosylation mutants of ADGRG6. We observed that N-glycosylation specifically takes place in the NTF and not the CTF of ADGRG6. Our results demonstrate that specific N-glycan residues in different domains of the extracellular NTF of ADGRG6 have distinct roles in ADGRG6 autoproteolysis, furin cleavage, membrane trafficking, and G-protein signalling. In the future, we plan to decipher the roles of N-glycosylation of ADGRG6 in organogenesis and tissue development using zebrafish models." Authors & Affiliations "Anandhu Jayaraman: Department of Biology, Ashoka University Prabakaran Annadurai: Department of Biology, Ashoka University. Currently: University of Leipzig Mansi Tiwari: Department of Biology, Ashoka University. Currently: University of Aberdeen Priyadatha Sajan: Department of Biology, Ashoka University, Currently: University of Groningen Nayonika Chatterjee: Department of Biology, Ashoka University Prateek Sibal: Department of Biology, Ashoka University" About Pal Kasturi "I received my bachelor’s degree in Physiology from Presidency College, University of Calcutta and went on to complete my masters from Madurai Kamaraj University. During my PhD training, I worked in the laboratory of Dr. Kathryn Defea at the University of California, Riverside. For my PhD thesis, I worked on non-canonical, scaffold driven signaling by protease activated receptor-2 (PAR2). I joined University of Texas Southwestern Medical Center, for my postdoctoral training. Here, I worked on the regulation of the Sonic Hedgehog pathway by GPCRs which localized to the primary cilia. I then joined the laboratory of Dr. Velia Fowler, at the Scripps Research Institute, as a Judith Graham Poole postdoctoral fellow to work on the role of cytoskeletal proteins in megakaryocyte to platelet differentiation. I joined the Department of Biology at Ashoka University in 2020 as an assistant professor." Pal Kasturi on the web Ashoka University < Previous Session Next Session >

Full Agenda Adhesion GPCR workshop 2024 CINVESTAV, Mexico City, Mexico October 23-25 Download PDF Program HERE < Back to Full Agenda Session VIII Physiological and pathological roles of AGPCRs in the periphery The CELSR/ADGRC Homolog Flamingo Is Not Autoproteolytically Processed By The GAIN Domain Tobias Langenhan Adhesion GPCR GPR116/Adgrf5 controls a lineage of anti-thermogenic adipocytes with implications for adaptive thermogenesis during prolonged cold exposure Anastasia Georgiadi ADGRF5-mediated regulation of cardiac health and disease Douglas Tilley Characterization of Phenotypes Associated with GPR110 Deletion Hee-Yong Kim The Adhesion GPCR Cupidon Regulates Mating In The Closest Relatives Of Animals Alain Garcia De Las Bayonas Critical role for CD97/ADGRE5 in the induction of allergic airway inflammation Gabriela Aust The CELSR/ADGRC Homolog Flamingo Is Not Autoproteolytically Processed By The GAIN Domain Tobias Langenhan Abstract Only available for AGPCR 24 Attendees Authors & Affiliations "Yin Kwan Chung, Leipzig University Falko Nagel, 7TM Antibodies GmbH Stefan Schulz, Friedrich-Schiller-University Jena and 7TM Antibodies GmbH" About Tobias Langenhan "1997-2004: Medical school and Dr. med. Neuroanatomy (Würzburg, Germany); 2004-2005: M.Sc . Neuroscience (Oxford, UK); 2005-2009: D.Phil. Neuroscience (Oxford, UK); 2009-2016: Group leader, Institute of Neurophysiology (Würzburg, Germany); 2016: Heisenberg professorship (Würzburg, Germany); 2016-to date: Professor and Chair in Biochemistry (Leipzig, Germany)" Tobias Langenhan on the web Langenhan Lab X (Twitter) LinkedIn Adhesion GPCR GPR116/Adgrf5 controls a lineage of anti-thermogenic adipocytes with implications for adaptive thermogenesis during prolonged cold exposure Anastasia Georgiadi Abstract Only available for AGPCR 24 Attendees Authors & Affiliations "El Merabhi Rabih1*, Karagiannakou Vasiliki1*, Kardinal Ronja2, Jäckstein Michelle3 Yvonne, Kumar Jha Ankush1, Krokidi Sissy Thodou1, Wachten Dagmar2, Heeren Jörg3, Herzig Stephan1, Georgiadi Anastasia1 *equal contributions , Institutions : 1. Institute for Diabetes and Cancer, Helmholtz Centre Munich, Germany, 2. Institute of Innate Immunity, University Hospital Bonn, University of Bonn, 3. Centre for Experimental Medicine, Institute for Biocehmistry and Molecular Cell Biology, University Medical Center Hamburg-Eppendorf" About Anastasia Georgiadi "Head of Junior Group Endocrine Pharmacology, Institute of Diabetes and Cancer (IDC). Professional Background Since 2021 Group Leader, Institute for Diabetes and Cancer, Helmholtz Diabetes Centre, Munich 2018 - 2021 Project Team Leader, Institute for Diabetes and Cancer, Helmholtz Diabetes Centre, Munich 2015 - 2018 Postdoctoral fellow, Department of Adipose Tissue Biology, Institute for Diabetes and Cancer, Helmholtz Diabetes Centre, Munich 2012 - 2015 Postdoctoral fellow, Department of Cell and Molecular Biology, Karolinska Institute, Sweden" Anastasia Georgiadi on the web Endocrine Pharmacology Google Scholar ADGRF5-mediated regulation of cardiac health and disease Douglas Tilley Abstract Only available for AGPCR 24 Attendees About Douglas Tilley "Research in the Tilley laboratory focuses primarily upon aspects of GPCR regulation of cardiac function, inflammation and remodeling during HF or following acute cardiac injury. Much of this work centered on elucidating novel mechanisms by which β-adrenergic receptors impact cardiac structure and function, and has evolved to encompass their roles in regulating immune cell response to acute cardiac injury or chronic stress. Additionally, the lab has begun to investigate potential roles for previously unrecognized cardiac-expressed GPCRs in the regulation of physiologic/pathologic function in the heart in an effort to uncover novel therapeutic directions for HF, including adhesion GPCRs (AGPCRs). In all, research in the Tilley lab spans molecular pharmacology to pathophysiology studies focused primarily in the cardiovascular realm." Douglas Tilley on the web Lewis Katz School of Medicine at Temple University Characterization of Phenotypes Associated with GPR110 Deletion Hee-Yong Kim Abstract "G-protein coupled receptor 110 (ADGRF1, GPR110), an adhesion GPCR recently deorphanized, plays an important role in in the development of neurons and cognitive function. Synaptamide, an endogenous ligand for GPR110, binds to the N-terminal G-protein autoproteolysis-inducing (GAIN) domain of GPR110, and activates GPR110/cAMP signaling. This activation promotes neurogenic differentiation of neural stem cells, neurite growth, and synaptogenesis of developing neurons. In addition, a significant role of GPR110 in blood brain barrier (BBB) function has been discovered. GPR110 is highly expressed in mouse and human NPCs and neurons, while its expression was absent in astrocytes. GPR110 is also highly expressed in the kidney, however, little is known about the function of this receptor in renal physiology. To extend our understanding of the role of GPR110 signaling in kidney, we evaluated the urine albumin level in mice devoid of GPR110 gene (GPR110 KO) compared to the wild type (WT). To provide the molecular basis for the renal phenotype, we analyzed in parallel differential expression of kidney proteins in GPR110 KO and WT mice by label-free LC-MS/MS and pathway analysis. We found that the albumin to creatinine ratio was significantly elevated in urine samples obtained from GPR110 KO mice, indicating glomerular filtration dysfunction. The change in protein expression of key proteins including VEGFA is associated with the abnormal renal phenotype of albumin urea in GPR110 KO mice. In addition to the central nervous system phenotype such as learning and memory deficit and BBB dysfunction, our study revealed a new renal phenotype associated with lack of GPR110 signaling. " Authors & Affiliations "Laboratory of Molecular Signaling, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, USA" About Hee-Yong Kim "Senior Investigator and Chief of the Laboratory of Molecular Signaling at NIAAA, NIH" Hee-Yong Kim on the web NIH The Adhesion GPCR Cupidon Regulates Mating In The Closest Relatives Of Animals Alain Garcia De Las Bayonas Abstract "All animals develop through the recognition, adhesion, and fusion of a differentiated sperm and egg. Although fundamental, the evolution of gametogenesis and fertilization in animals is poorly understood. Recently, evidence for sex has been described in choanoflagellates, the closest living relatives of animals. Under nutrient depletion, the model choanoflagellate Salpingoeca rosetta forms distinct cell types that aggregate, fuse, and undergo meiotic recombination. Additionally, the bacterium Vibrio fischeri also induces mating in S. rosetta cultures, suggesting that multiple environmental cues can trigger sex. Importantly, the signaling pathways underlying sexual reproduction in these different contexts have not been investigated. In this study, we report the discovery of an adhesion GPCR, named Cupidon, that regulates the switch from vegetative growth to sexual reproduction in S. rosetta. We found that the knock-out of cupidon induces a gain in cell adhesion and cell fusion, resembling the mating behavior of wild-type cells under nutrient depletion. Cupidon mutants, similar to starved wild-type cells, upregulate various extracellular matrix-related genes, including teneurins and metalloproteases. Finally, we showed that nutrient availability controls the dissociation of the N-terminal fragment in Cupidon. Together, our results suggest that Cupidon prevents sexual reproduction in S. rosetta under high nutrient availability, by inhibiting genes involved in gamete recognition. " Authors & Affiliations "King Nicole, Howard Hughes Medical Institute and Department of Molecular and Cell Biology, University of California Berkeley" About Alain Garcia De Las Bayonas "Hi everyone! I am currently finishing my postoc in the laboratory of Pr Nicole King at UC Berkeley where I am studying the evolution of GPCR families in choanoflagellates, the sister group of animals. I have a particular interest in understanding the premetazoan function of adhesion GPCRs." Alain Garcia De Las Bayonas on the web King Lab Critical role for CD97/ADGRE5 in the induction of allergic airway inflammation Gabriela Aust Abstract Only available for AGPCR 24 Attendees Authors & Affiliations Coming Soon About Gabriela Aust Coming Soon Gabriela Aust on the web Coming Soon < Previous Session Next Session >

Full Agenda Adhesion GPCR workshop 2024 CINVESTAV, Mexico City, Mexico October 23-25 Download PDF Program HERE < Back to Full Agenda Reception dinner Coming Soon < Previous Session Next Session >

Full Agenda Adhesion GPCR workshop 2024 CINVESTAV, Mexico City, Mexico October 23-25 Download PDF Program HERE < Back to Full Agenda Posters < Previous Session Next Session >

Full Agenda Adhesion GPCR workshop 2024 CINVESTAV, Mexico City, Mexico October 23-25 Download PDF Program HERE < Back to Full Agenda Session V Structural mechanisms of AGPCR signaling and function Structural Determinants Of GAIN Domain Autoproteolysis And Cleavage Resistance Of Adhesion G Protein-Coupled Receptors Fabian Pohl Structural studies of the CELSR1 extracellular region reveal a compact multidomain module of fourteen domains which regulates signaling Sumit Bandekar Unveiling the GPS Cleavage Mechanism in ADGRL1 with QM/MM Florian Seufert Structural Determinants Of GAIN Domain Autoproteolysis And Cleavage Resistance Of Adhesion G Protein-Coupled Receptors Fabian Pohl Abstract "The GPCR autoproteolysis-inducing (GAIN) domain is a hallmark feature of adhe-sion G-protein coupled receptors (ADGRs), as this extracellular domain contains an integral agonistic sequence (Stachel) for activation via binding to the 7-transmembrane (7TM) helical domain of the receptor. Many ADGRs are autoproteo-lytically cleaved at the GPCR proteolysis site (GPS), an HXS/T motif within the GAIN domain. However, several ADGRs can be activated without GPS cleavage. We de-termined the crystal structure of the human ADGRB2/BAI2 hormone receptor (HormR) and GAIN domains and found that this ADGR is resistant to autoproteolysis despite the presence of a canonical HLS sequence at the GPS. By structural com-parison and with the help of molecular dynamics (MD) simulations we identified several unique structural features that are important for autoproteolytic cleavage, beyond the canonical HXS/T motif. Disruption of these features reduced autoproteo-lytic activity in ADGRL1/LPHN1 and restored cleavage competence of AD-GRB3/BAI3. Furthermore, conservation analysis indicates that wild type ADGRB2 and ADGRB3 are GPS cleavage-incompetent receptors." Authors & Affiliations "Fabian Pohl1, Florian Seufert2, Yin Kwan Chung3, Daniela Volke1, Ralf Hoffmann1, Torsten Schöneberg4, Tobias Langenhan3, Peter W. Hildebrand2, Norbert Sträter1 1 Institute of Bioanalytical Chemistry, Leipzig University, Deutscher Platz 5, 04103 Leipzig, Germany 2 Institute of Medical Physics and Biophysics, Leipzig University, Härtelstr. 16-18, D-04107 Leipzig 3 Rudolf-Schönheimer-Institute of Biochemistry, Division of General Biochemistry, Leipzig University, Johannisallee 30, D-04103 Leipzig 4 Rudolf-Schönheimer-Institute of Biochemistry, Division of Molecular Biochemis-try, Leipzig University, Johannisallee 30, D-04103 Leipzig" About Fabian Pohl "Mar 2023 – Today Postdoc, University Leipzig, Group of Prof. Langenhan Apr 2016 – Nov 2022 PhD candidate, University Leipzig, Group of Prof. Sträter Oct 2011 – Mar 2016 Master of Science in chemistry, University Leipzig Oct 2008 – Sep 2011 Bachelor of Science in chemistry, University Leipzig" Fabian Pohl on the web Langenhan Lab Structural studies of the CELSR1 extracellular region reveal a compact multidomain module of fourteen domains which regulates signaling Sumit Bandekar Abstract "Cadherin EGF Laminin G seven-pass G-type receptors (CELSRs) are conserved adhesion G protein-coupled receptors; they are essential for embryogenesis and neural development. CELSRs have large and enigmatic extracellular regions (ECRs) with nine cadherin repeats and a variety of adhesion domains which couple cell adhesion to signaling. CELSRs regulate planar cell polarity, including the closure of the neural tube. Despite numerous cell and animal studies, molecular details on CELSR proteins are sparsely available, precluding an integrative understanding of CELSR biology. Here, we report the 3.8 Å cryo-EM reconstruction of the CELSR1 ECR which enables unambiguous assignment of the 14 domains within the structure. These domains form a compact module mediated by robust and evolutionarily conserved interdomain interactions. This compact module provides a plethora of potential ligand binding sites for the various adhesion domains within the structure and hints at a model where the compact module could be pulled apart by robust mechanical force. We present biophysical evidence that the CELSR1 ECR forms an extended dimer in the presence of Ca2+, which we propose represents the cadherin repeats dimerizing in a configuration similar to protocadherins. We employ cellular assays with full-length CELSR1 and truncation constructs to assess the adhesive and signaling functions of this protein. We assign the N-terminal CADH1-8 module as necessary for cell adhesion and we show the C-terminal CAHD9-GAIN module regulates signaling. Our work provides molecular context to the literature on CELSR function and lays the groundwork for further elucidation of structure/function relationships." Authors & Affiliations "Garbett, Krassimira, Kordon, Szymon P., Shearer, Tanner, Sando, Richard C.*, and Araç, Demet* Department of Biochemistry and Molecular Biology, The University of Chicago Neuroscience Institute, Institute for Biophysical Dynamics, and the Center for Mechanical Excitability, The University of Chicago, Chicago, IL, 60637, USA. Department of Pharmacology, Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN 37240, USA." About Sumit Bandekar "I am an NIH F32 postdoctoral fellow in the Araç Laboratory at the University of Chicago. I study adhesion GPCRs using structural biology perspective and I am interested in how the large multidomain extracellular region regulates receptor function. In my free time, I enjoy biking around Chicago and trying new breweries and restaurants." Sumit Bandekar on the web Araç Laboratory at UChicago X (Twitter) LinkedIn Unveiling the GPS Cleavage Mechanism in ADGRL1 with QM/MM Florian Seufert Abstract "Adhesion G-protein coupled receptors (aGPCR) are a family of 32 mammalian proteins with a defining conserved GPCR autoproteolysis inducing (GAIN) domain that catalyzes receptor self-cleavage at a GPCR proteolysis site (GPS). The autoproteolytic mechanism has been previously proposed, but remains to be validated.⁠ A previous computational study has uncovered variable flexible protein regions, whose dynamics mediate solvent-accessibility of the catalytically active GPS triad HL|S/T, however classical molecular dynamics approaches fall short of explaining the chemical reaction.⁠ Using a multiscale QM/MM approach - combining computational quantum mechanics with classical molecular dynamics - to study the GAIN domain cleavage mechanism of ADGRL1 reveals the sequence of events at the electronic level, suggesting relative energies for the individual states during the reaction, and provides insight into the structural determinants for a successful GPS cleavage exceeding the catalytically active GPS triad. By directly scanning and comparing energetic sequences of reaction steps, the most likely pathway and the individual contribution of surrounding protein residues can be elucidated. A stable π-edge contact with a conserved phenylalanine and a protonated glutamate side-chain catalyze the reactant conformation. MD simulations with the parameterized ester intermediate reveal a protonation-dependent dynamic desolvation of the GPS for subsequent ester hydrolysis by restricting water conformations. Mutational experiments on residues of interest showed that restoring the Phe-His interaction in the uncleaving ADGRB3 GAIN domain partially re-instates cleavage, while its deletion reduces cleavage in the ADGRL1 GAIN domain.⁠ We present a two-step GPS cleavage model and respective determinants of the reaction." Authors & Affiliations "Chung, Yin Kwan2, Pohl, Fabian2, Batebi, Hossein1 Sträter, Norbert3 , Langenhan, Tobias2 & Hildebrand, Peter Werner1 1 Institute of Medical Physics and Biophysics, Medical Faculty, Leipzig University, Germany 2 Rudolf Schönheimer Institute of Biochemistry, Division of General Biochemistry, Medical Faculty, Leipzig University, Germany 3 Institute of Bioanalytical Chemistry, Leipzig University, Germany" About Florian Seufert "Florian Seufert has studied Biochemistry in Leipzig, before joining the Hildebrand Lab in Leipzig for his PhD." Florian Seufert on the web LinkedIn ResearchGate < Previous Session Next Session >

Full Agenda Adhesion GPCR workshop 2024 CINVESTAV, Mexico City, Mexico October 23-25 Download PDF Program HERE < Back to Full Agenda Coffee Break with lights snacks < Previous Session Next Session >

Full Agenda Adhesion GPCR workshop 2024 CINVESTAV, Mexico City, Mexico October 23-25 Download PDF Program HERE < Back to Full Agenda Session IV AGPCRs signaling in the nervous system BAI1/ADGRB1-mediated Regulation of Mitochondrial Morphology in Axons Joseph Duman Bai1 Is A Novel Neuronal Substrate Of The Psychiatric Risk Kinase TNIK Simeon R. Mihaylov Intricacies Of Complex Assembly And Ligand Interaction In The Adhesion GPCR Latrophilin/Cirl Anne Bormann BAI1/ADGRB1-mediated Regulation of Mitochondrial Morphology in Axons Joseph Duman Abstract Only available for AGPCR 24 Attendees Authors & Affiliations "Tolias, Kimberley F., Departments of Neuroscience and Biochemistry & Molecular Biology, Baylor College of Medicine, Houston, TX 77030" About Joseph Duman "Joseph Duman is an Assistant Professor in the Department of Neuroscience at Baylor College of Medicine, where he studies BAI1's role in the brain and the radiobiology of treatments for brain cancer. He trained at the University of California at Berkeley with John Forte and the University of Washington with Bertil Hille, before joining Kim Tolias' lab at Baylor College of Medicine." Joseph Duman on the web Baylor College of Medicine Kimberley Tolias Lab Bai1 Is A Novel Neuronal Substrate Of The Psychiatric Risk Kinase TNIK Simeon R. Mihaylov Abstract Only available for AGPCR 24 Attendees Authors & Affiliations "Flynn, Helen R.2, Sampedro-Castaneda, Marisol1, Claxton, Suzanne1, Skehel, Mark2, Ultanir, Sila K.1 1Kinases and Brain Development Laboratory, The Francis Crick Institute, UK 2Proteomics Science Technology Platform, The Francis Crick Institute, UK" About Simeon R. Mihaylov " I am a postdoctoral researcher in the kinases and brain development laboratory led by Dr Sila Ultanir at the Francis Crick Institute in London, England. I undertook my BSc in Biochemistry and Genetics at the University of Sheffield followed up by obtaining a PhD in molecular neuroscience at the Sheffield Institute for Translational Neuroscience. I then moved to King's College London, where my interest and passion for kinases in brain health and disease developed. I initially worked on mTOR in the pathogenesis of Tuberous Sclerosis Complex and then moved to the Francis Crick Institute working on the psychiatric risk kinase TNIK. I also work on multiple other kinases in our laboratory implicated in various neurodevelopmental and neurodegenerative disorders. My expertise includes biochemical approaches, proteomics and transcriptomics to name a few. I have recently also developed a strong interest in adhesion GPCRs and in particular, Bai1. " Simeon R. Mihaylov on the web Crick LinkedIn X (Twitter) Google Scholar Intricacies Of Complex Assembly And Ligand Interaction In The Adhesion GPCR Latrophilin/Cirl Anne Bormann Abstract Only available for AGPCR 24 Attendees Authors & Affiliations "Körner, Marek Benjamin; Dahse, Anne-Kristin; Ljaschenko, Dmitrij; Scholz, Nicole (Rudolf Schönheimer Institute of Biochemistry, Division of General Biochemistry, Faculty of Medicine, Leipzig University)" About Anne Bormann "I am a biochemist by training and studied at Leipzig University from 2015 to 2020. During my Bachelor's in 2018, I sought practical lab experience and found a position as a student assistant in Dr. Nicole Scholz's lab. My main topics were protein biochemistry, Drosophila husbandry, and genetics. I was fortunate that Nicole offered me an opportunity to do my Master's and later on a PhD thesis in her group. Since then, I have broadened my horizons with many more techniques in vivo and in vitro, with a main emphasis on the Adhesion GPCR Latrophilin/Cirl. Currently, I am in the final stages of my PhD, and I am looking forward to new projects and ideas." Anne Bormann on the web Rudolf-Schönheimer-Institut für Biochemie Scholz Lab < Previous Session Next Session >

Full Agenda Adhesion GPCR workshop 2024 CINVESTAV, Mexico City, Mexico October 23-25 Download PDF Program HERE < Back to Full Agenda Student Flash Presentations Health and Disease, Metabolism, Nervous System, Proteomics and Transcriptomics, Receptor Structure, Signaling and Activation Mechanism Adgrg6/Gpr126 is Required for Myocardial Notch Activity and N-cadherin Localization to Attain Trabecular Identity Abhishek Kumar Singh Investigating The Role of ADGRB3 Loss of Expression in Brain Tumor Formation in Li-Fraumeni Syndrome Alex Torrelli-Diljohn GPR124 Mediates Adhesion Of Leukemic Stem Cells To Their Niche And Leads To Myeloid Skewing Emmanouil Kyrloglou A single cell GPCR map of thermogenic fat Vasiliki Karagiannakou GAIN Domain Dynamics And Its Relevance For Adhesion GPCR Signaling In Vivo Lara-Sophie Brodmerkel Novel isoforms of adhesion G protein coupled receptor B1 (ADGRB1/BAI1) generated from an alternative promoter in intron 17 Rashed Rezwan Parag Identification of Differentially Expressed Gpr116 (Adgrf5) Transcript Variants in Mouse Kidney Hailey Steichen Elucidating The Role Of GPR97/ADGRG3 In Neutrophil Biology Tyler Bernadyn Adgrg6/Gpr126 is Required for Myocardial Notch Activity and N-cadherin Localization to Attain Trabecular Identity Abhishek Kumar Singh Abstract Only available for AGPCR 24 Workshop Attendees Authors & Affiliations "Srivastava, Swati1; Singh, Abhishek Kumar1; Gunawan, Felix2; Gentile, Alessandra2; Petersen, Sarah C.3; Stainier, Didier Y.R.2; Engel, Felix B.1 1 Experimental Renal and Cardiovascular Research, Department of Nephropathology, Institute of Pathology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Kussmaulallee 12, 91054 Erlangen, Germany 2 Developmental Genetics, Max-Planck-Institute for Heart and Lung Research, Ludwigstrasse 43, 61231 Bad Nauheim, Germany 3 Department of Developmental Biology, Washington University in St. Louis, 660 S. Euclid Ave, St. Louis, MO 63108, USA. Present address: Department of Neuroscience, Kenyon College, 203 North College Road, Gambier, OH 43022, USA" About Abhishek Kumar Singh "I am a doctoral student in the lab of Prof. Felix B. Engel. Since my undergraduate studies, I became fascinated with the class of adhesion GPCRs, owing to their potential, scarcity of knowledge on them, diverse expression profile, and the complexity with which they seem to be working. This made me pursue my higher education in the field of adhesion GPCRs. Accordingly, I worked with Prof. Hsi-Hsien Lin as summer intern twice, and finally joined the lab of Prof. Engel. I hope to develop my skillsets so as to be able to establish my own lab in future to work on adhesion GPCRs employing highly interdisciplinary field." Abhishek Kumar Singh on the web Uniklinikum Erlangen Google Scholar X (Twitter) Investigating The Role of ADGRB3 Loss of Expression in Brain Tumor Formation in Li-Fraumeni Syndrome Alex Torrelli-Diljohn Abstract "Li-Fraumeni syndrome (LFS) is a rare cancer predisposition syndrome caused by a germline mutation in the TP53 tumor suppressor gene. Glioblastoma (GBM) is the most prevalent central nervous system tumor in LFS, with TP53 mutations detected in 30% of sporadic GBMs. GBM is the most aggressive primary brain neoplasm that affects adults, with a median survival of 12-15 months. Recent studies implicate the dysregulation of adhesion G-Protein coupled receptors (GPCRs) in GBM development. Brain angiogenesis inhibitor 3 (BAI3/ADGRB3), a member of the BAI1-3 subfamily of adhesion GPCRS, has been observed to have low expression in brain tumors according to TCGA data, but the significance of this observation has not been explored. However, while its sister protein BAI1 has demonstrated tumor suppressor functions in the brain, it remains unclear whether BAI3 shares this role. To test this, an LFS mouse model (germline Tp53 deletion) with a second floxed allele under the control of Nestin-Cre was crossed to Bai3-/- mice. Preliminary findings indicate that the simultaneous loss of Bai3 and Tp53 expression in our mouse model increased spontaneous brain tumor formation incidence from 34% to 71%, in contrast to the loss of p53 alone. These observations lead me to hypothesize that ADGRB3 functions as a tumor suppressor in the brain, and its silencing, in the context of p53 mutation, facilitates GBM formation. Isolated GBM stem cells were collected for further genomic analyses and to test whether overexpression of BAI3 will save the tumor phenotype." Authors & Affiliations "van den Boom, Vincent; Pereira-Martins, Diego; Sheveleva, Sofia; Huls, Gerwin; Schuringa, Jan Jacob Univerisity Medical Center Groningen" About Alex Torrelli-Diljohn "Alex completed his undergraduate & master’s degrees in Neurobiology & Cognitive sciences from the University of South Florida, where he researched early-onset Alzheimer’s disease in the lab of Dr. Angele Parent. He is interested in working on Li-Fraumeni syndrome and helping patients afflicted with this condition. He is also interested in working on Glioma Brain Organoid models." Alex Torrelli-Diljohn on the web The University of Alabama at Birmingham LinkedIn GPR124 Mediates Adhesion Of Leukemic Stem Cells To Their Niche And Leads To Myeloid Skewing Emmanouil Kyrloglou Abstract Only available for AGPCR 24 Workshop Attendees About Emmanouil Kyrloglou "Studied medicine at the University of Groningen. Now PhD-candidate at the Experimental Hematology lab of the University Medical Center Groningen (UMCG)." Emmanouil Kyrloglou on the web Adhesion GPCR Consortium LinkedIn A single cell GPCR map of thermogenic fat Vasiliki Karagiannakou Abstract Only available for AGPCR 24 Workshop Attendees Authors & Affiliations "Karagiannakou Vasiliki, El Merahbi Rabih, Herzig Stephan , Georgiadi A , Helmholtz Center Munich, Institute of Diabetes and Cancer" About Vasiliki Karagiannakou "MSc in Bioinformatics, PhD student since 2022 in the Institute for Diabetes and Cancer IDC, Helmholtz Centre Munich" Vasiliki Karagiannakou on the web Helmholtz Centre Munich GAIN Domain Dynamics And Its Relevance For Adhesion GPCR Signaling In Vivo Lara-Sophie Brodmerkel Abstract "Over the last years, Adhesion G Protein-coupled receptors (aGPCR) have been shown to play a crucial role in the perception of mechanical signals. However, the molecular details underlying their activation and how mechanical forces are translated into an intracellular response remains largely unknown. Recent Molecular Dynamics (MD) simulations of several aGPCRs predicted two flexible regions, termed flaps, located within the GPCR autoproteolysis inducing (GAIN) domain. These flaps could theoretically enable partial decryption of the Stachel through lateral movement and affect activation of the receptor independent of NTF-CTF dissociation. However, the physiological relevance of flap flexibility on receptor activation and signaling remains unclear. To investigate whether flexibility of GAIN flaps affects aGPCR function under native conditions, we strategically inserted specific mutations into the GAIN domain of the Latrophilin homologue Cirl in Drosophila melanogaster, with the intention to alter flap dynamics. Our goal is to understand if and how flap dynamics influence Cirl function and consequently the mechanosensory faculty of neurons in vivo. To this end, we combine behavioral, biochemical, immunohistochemical and functional readouts, with the overarching ambition to expand our knowledge on the mechanistic details underlying aGPCR activation in mechanosensation." Authors & Affiliations "Brodmerkel Lara-Sophie 1, Bormann Anne 1, Seufert Florian 2, Hildebrand Peter 2,3 ´, Ljaschenko Dmitrij 1´, Scholz Nicole 1´ 1Rudolf Schönheimer Institute of Biochemistry, Division of General Biochemistry, Medical Faculty, Leipzig University, Leipzig, Germany 2Institute for Medical Physics and Biophysics, Medical Faculty, Leipzig University, Leipzig, Germany 3Institute of Medical Physics and Biophysics, Charité – Universitätsmedizin Berlin, Berlin, Germany ´ correspondence: scholzlab@gmail.com , Dmitrij.Ljaschenko@medizin.uni-leipzig.de , peter.hildebrand@medizin.uni-leipzig.de *contributed equally" About Lara-Sophie Brodmerkel "I am a medical student and I´m currently working on my MD thesis in the lab of Dr. Nicole Scholz. We are investigating the relevance of GAIN domain dynamics for aGPCR signaling in Drosophila melanogaster." Lara-Sophie Brodmerkel on the web University of Leipzig Novel isoforms of adhesion GPCR B1 (ADGRB1/BAI1) generated from an alternative promoter in intron 17 Rashed Rezwan Parag Abstract "Brain-specific angiogenesis inhibitor 1 (BAI1) belongs to the adhesion G-protein-coupled receptors, which exhibit large multi-domain extracellular N-termini that mediate cell-cell and cell-matrix interactions. To explore the existence of BAI1 isoforms, we queried genomic datasets for markers of active chromatin and new transcript variants in the ADGRB1 (adhesion G protein-coupled receptor B1) gene. Two major types of mRNAs were identified in human/mouse brain, those with a start codon in exon 2 encoding a full-length protein of a predicted size of 173.5/173.3 kDa and shorter transcripts starting from alternative exons at the intron 17/exon 18 boundary with new or exon 19 start codons, predicting shorter isoforms of 76.9/76.4 and 70.8/70.5 kDa, respectively. Immunoblots on wild-type and Adgrb1 exon 2-deleted mice, reverse transcription PCR and promoter-luciferase reporters confirmed that the shorter isoforms originate from an alternative promoter in intron 17. The shorter BAI1 isoforms lack most of the N-terminus and are very close in structure to the truncated BAI1 isoform generated through GPS processing from the full-length receptor. The cleaved BAI1 isoform has a 19 amino acid extracellular stalk that can serve as a receptor agonist, while the alternative transcripts generate BAI1 isoforms with extracellular N-termini of 5 or 60 amino acids. Further studies are warranted to compare the functions of these isoforms and examine the distinct roles they play in different tissues and cell types." About Rashed Rezwan Parag "Rashed is from Bangladesh. He has received his BSc and MS degree from the Department of Biochemistry and Molecular Biology, University of Chittagong, Bangladesh. Before joining UAB as a graduate student, he worked in the EuGEF Research Group to identify novel prognostic biomarkers and therapeutic options for Metastatic Breast Cancer (BC) and Head and Neck Squamous Cell Carcinoma (HNSCC). Currently, he is working to elucidate the role of ADGRB1 and ADGRB3 in medulloblastoma (pediatric brain tumor)." Rashed Rezwan Parag on the web Google Scholar Identification of Differentially Expressed Gpr116 (Adgrf5) Transcript Variants in Mouse Kidney Hailey Steichen Abstract "Adhesion G protein-coupled receptors (aGPCRs) are important and understudied modulators of physiological processes. Previous work suggests that aGPCRs, and Adgrf5 in particular, undergo significant tissue-specific mRNA processing that results in holoreceptors with unique and variable N-terminal structures (Knierim et al. 2019). Recently, it was shown that transcripts of the postsynaptic aGPCR Latrophilin-3 (Lphn3/Adgrl3) undergo physiologically relevant alternative splicing, which determined heterotrimeric signaling through Gαs- or Gα12/13- mediated pathways (Südhof et al. 2024). These results demonstrate that identifying precise, tissue-specific transcript variants is critical to understanding the physiological relevance of aGPCRs. Moreover, these studies highlight the possibility that tissue expression of single aGPCRs is likely comprised of multiple transcript variants. We previously demonstrated that kidney-specific Adgrf5/Gpr116 knockout causes luminal membrane accumulation of V-ATPase in acid-secreting A-type intercalated cells (AICs) in the collecting ducts and a significant reduction in urine pH (Zaidman et al. 2020). Renal Adgrf5 is restricted to two distinct populations of cells: AICs and endothelial cells (ECs). We hypothesized that cell-specific Adgrf5 transcript variants are expressed in renal AICs and ECs, and therefore are activated by distinct mechanisms unique to the cellular microenvironment. We detected and aligned three Adgrf5 exons that undergo differential expression in the kidney: exons 2, 12, and 22. Adgrf5 transcripts in FACS-sorted GFP+ ICs do not contain the exon 2 variable region, or the alternative exons 12 and 22, while ECs contain all three. However, EC markers were detected in GFP+ ICs, demonstrating some EC contamination in the sorted ICs. Detection of transcripts that do, and do not, contain multiple variable regions suggests expression of multiple mRNAs in specific cells. These data demonstrate that Adgrf5 transcript variants are cell-specific in the kidney. Moreover, the complete repertoire of aGPCRs expressed in the kidney is undefined. We performed single-nucleus RNA sequencing on male and female kidneys. snRNAseq revealed abundant, cell-specific expression of six aGPCRs (Adgrl4, Adgre5, Adgrf1, Adgrf5, Adgrg1, and Adgrg3). Detection of these, as well as 18 other aGPCRs, was confirmed by PCR screening for GAIN/GPS domains on cDNA from whole-kidney lysates. These results reveal the complete set of aGPCRs expressed in the murine kidney. Future studies will focus on determining the physiological roles and tissue-specific variants of these receptors." Authors & Affiliations "Department of Biochemistry & Molecular Biology, University of New Mexico Health Sciences Center Xue, Jianxiang; Yan, Teagan; Eaton, Krystin, and Zaidman, Nathan" About Hailey Steichen "I currently work in Dr. Nathan Zaidman’s lab at the University of New Mexico Health Sciences Center. I am researching the physiological relevance of Adgrf5 (Gpr116) transcript variants in specific cell types in the kidney. I have also worked in the laboratory of Dr. James Bridges at National Jewish Health in Denver, CO researching molecular mechanisms of lung injury and repair mediated by Adgrf5. I received my MS in Applied Toxicology from the University of Washington, and my BA in Biology from Vassar College." Hailey Steichen on the web Zaidman Physiology Lab Elucidating The Role Of GPR97/ADGRG3 In Neutrophil Biology Tyler Bernadyn Abstract Only available for AGPCR 24 Workshop Attendees Authors & Affiliations "Gandhi, Riya; Chandan, Nancy; Kwarcinski, Frank; Smrcka, Alan; and Tall, Gregory G." About Tyler Bernadyn "4th year Pharmacology Ph.D. Student in Greg Tall's Lab." Tyler Bernadyn on the web LinkedIn < Previous Session Next Session >

Full Agenda Adhesion GPCR workshop 2024 CINVESTAV, Mexico City, Mexico October 23-25 Download PDF Program HERE < Back to Full Agenda Leave for dinner reception Coming Soon < Previous Session Next Session >

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CINVESTAV, Mexico City, Mexico October 23-25 Full Agenda Adhesion GPCR workshop 2024 CINVESTAV, Mexico City, Mexico October 23-25 Download PDF Program HERE Oct 23 - 9:00 AM Registration & Welcoming Remarks Read More 10:00 AM Student Flash Presentations Health and Disease, Metabolism, Nervous System, Proteomics and Transcriptomics, Receptor Structure, Signaling and Activation Mechanism Abhishek Kumar Singh · Alex Torrelli-Diljohn · Emmanouil Kyrloglou · Vasiliki Karagiannakou · Lara-Sophie Brodmerkel · Rashed Rezwan Parag · Hailey Steichen · Tyler Bernadyn Read More 12:00 PM Coffee Break with lights snacks Read More 12:30 PM State of the Art Talk Mechanotransduction Nicole Scholz Read More 1:00 PM Plenary Lecture Identification and Functional Characterization of Adhesion GPCRs As Steroid Hormone Receptors and Hearing and Balance Receptors Jinpeng Sun Read More 2:00 PM Lunch Read More 3:00 PM Session I Tethered agonist-dependent/independent activation mechanism in AGPCRs Signe Mathiasen · Demet Araç · Yan Zhang · Andrew Dates · Frank Kwarcinski · Peng Xiao Read More 5:00 PM Leaving for City Center Read More 5:30 PM Mexico City Nocturnal Tour, Food and drinks Read More Oct 24 - 9:00 AM Session II AGPCR signaling pathways and trafficking Yuling Feng · Monserrat Avila Zozaya · Erwin G. Van Meir · Pal Kasturi Read More 10:30 AM Coffee Break with lights snacks Read More 11:00 AM Session III Molecular tools and biosensors directed at AGPCR signaling and function Stephanie Häfner · Laurent Sabbagh · Ana Lilia Moreno Salinas Read More 12:00 PM Session IV AGPCRs signaling in the nervous system Joseph Duman · Simeon R. Mihaylov · Anne Bormann Read More 1:00 PM Lunch Read More 2:00 PM Posters Read More 3:00 PM Session V Structural mechanisms of AGPCR signaling and function Fabian Pohl · Sumit Bandekar · Florian Seufert Read More 4:00 PM Dr. GPCR Community Presentation Monserrat Avila Zozaya Read More 4:30 PM Board meeting/General assembly Read More 5:30 PM Leave for dinner reception Read More 6:00 PM Reception dinner Read More Oct 25 - 9:00 AM Session VI AGPCRs shaping the nervous system Uwe Wolfrum · Yimin Zou · Suzanne Gross Read More 10:00 AM Coffee Break with lights snacks Read More 10:30 AM Session VII Physiological and pathological roles of AGPCRs in the nervous system Nicole Perry-Hauser · Mariam Melkumyan · Xianhua Piao · Beatriz Blanco Redondo · Willem Berend Post Read More 12:30 PM Lunch Read More 1:30 PM Session VIII Physiological and pathological roles of AGPCRs in the periphery Tobias Langenhan · Anastasia Georgiadi · Douglas Tilley · Hee-Yong Kim · Alain Garcia De Las Bayonas · Gabriela Aust Read More 3:30 PM Coffee Break with pastries annoucement of the aGEM award Read More 4:00 PM Session IX Technology capsule: Light on aGPCR signaling and function Carlos Montero Read More 4:40 PM Closing remarks Read More 5:00 PM Departure Read More