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436 items found for "α(2A)-adrenergic receptor"

  • Dimerization of β2-adrenergic receptor is responsible for the constitutive activity subjected to...

    October 2022 Dimerization of β2-adrenergic receptor is responsible for the constitutive activity subjected to inverse agonism "Dimerization of beta 2-adrenergic receptor (β2-AR) has been observed across various

  • Structures of β 1-adrenergic receptor in complex with Gs and ligands of different efficacies

    August 2022 "G-protein-coupled receptors (GPCRs) receive signals from ligands with different efficacies We report the cryo-EM structures of β1-adrenergic receptor (β1-AR) in complex with Gs (GαsGβ1Gγ2) and

  • Dopamine activates astrocytes in prefrontal cortex via α1-adrenergic receptors

    We find that PFC astrocytes express receptors for dopamine but are unresponsive through the Gs/Gi-cAMP , fast calcium signals in PFC astrocytes are time locked to dopamine release and are mediated by α1-adrenergic receptors both ex vivo and in vivo. active players in dopaminergic signaling in the PFC, contributing to PFC function though neuromodulator receptor

  • Expression pattern and clinical significance of beta 2-adrenergic receptor in oral squamous cell...

    September 2022 Expression pattern and clinical significance of beta 2-adrenergic receptor in oral squamous cell carcinoma: an emerging prognostic indicator and future therapeutic target " Purpose: Beta 2-Adrenergic Receptor (β2-AR) is significantly overexpressed in various types of malignancies, which is associated

  • Mechanism of enhanced sensitivity of mutated β-adrenergic-like octopamine receptor to amitraz in...

    October 2022 Mechanism of enhanced sensitivity of mutated β-adrenergic-like octopamine receptor to amitraz Previous assays verified that a typical G protein-coupled receptor, β-adrenergic-like octopamine receptor

  • Pharmacophore-guided Virtual Screening to Identify New β 3 -adrenergic Receptor Agonists

    August 2022 "Abstract The β3 -adrenergic receptor (β3 -AR) is found in several tissues such as adipose

  • β2-Adrenergic Receptor Expression and Intracellular Signaling in B Cells Are Highly Dynamic during..

    September 2022 β2-Adrenergic Receptor Expression and Intracellular Signaling in B Cells Are Highly Dynamic In the past, treatment of arthritic B cells with a β2-adrenergic receptor (β2-ADR) agonist has been shown Adrenergic receptors on B cells and intracellular β2-ADR downstream molecules (G protein-coupled receptor agonist terbutaline by flow cytometry. β2-ADR-expressing B cells increase during CIA without a change in receptor

  • Dimerization of β2-adrenergic receptor is responsible for the constitutive activity subjected to inv

    November 2022 "Dimerization of beta 2-adrenergic receptor (β2-AR) has been observed across various physiologies

  • Allosteric Effect of Nanobody Binding on Ligand-Specific Active States of the β2 Adrenergic Receptor

    Nanobody binding stabilizes G-protein-coupled receptors (GPCR) in a fully active state and modulates investigate the conformational changes induced by the binding of a nanobody (Nb80) on the active-like β2 adrenergic receptor (β2AR) via enhanced sampling molecular dynamics simulations. proximity of transmembrane (TM) helices 5 and 7, and favors the fully active-like conformation of the receptor contrast to the conditions under which no intracellular binding partner is bound, in which case the receptor

  • Phenylalanine 193 in Extracellular Loop 2 of the β 2-Adrenergic Receptor Coordinates β-Arrestin ...

    Phenylalanine 193 in Extracellular Loop 2 of the β 2-Adrenergic Receptor Coordinates β -Arrestin Interaction These receptors are the most clinically productive drug targets at present. components of receptor-effector interactions remain incompletely described. The β 2-adrenergic receptor ( β 2AR) is a prototypical and extensively studied GPCR that can provide Our studies reveal that F193 in extracellular loop 2 in the β2-adrenergic receptor mediates interactions

  • Activation of GPR183 by 7 α,25-Dihydroxycholesterol Induces Behavioral Hypersensitivity through...

    October 2022 Activation of GPR183 by 7 α,25-Dihydroxycholesterol Induces Behavioral Hypersensitivity Mitogen-Activated Protein Kinase and Nuclear Factor- κ B "Emerging evidence implicates the G-protein coupled receptor

  • Serotonin Receptor 5-HT2A Regulates TrkB Receptor Function in Heteroreceptor Complexes

    September 2022 "Serotonin receptor 5-HT2A and tropomyosin receptor kinase B (TrkB) strongly contribute decreased TrkB autophosphorylation, preventing its activation with agonist 7,8-DHF, even with low 5-HT2A receptor A blockade of 5-HT2A receptor with the preferential antagonist ketanserin prevented the receptor-mediated Our data reveal the functional role of 5-HT2A–TrkB receptor heterodimerization and suggest that the regulated

  • Differences across sexes on head-twitch behavior and 5-HT2A receptor signaling in C57BL/6J mice

    affect processes related to perception, cognition and sensory processing mostly via the serotonin 5-HT2A receptor

  • Propranolol: A “Pick and Roll” Team Player in Benign Tumors and Cancer Therapies

    In 2008 (and for the first time in the clinic), the therapeutic benefits of the β-adrenergic receptor

  • Canonical chemokine receptors as scavenging “decoys”

    all these situations, chemokines interact with seven-transmembrane chemokine-type G protein-coupled receptors (chemokine receptors, CKRs) and glycosaminoglycans (GAGs) to regulate the movement of leukocytes throughout In humans there are approximately 45 chemokines, 19 chemotactic or G-protein coupled chemokine receptors (CKRs) that signal via Gαi and 4 official atypical chemokine receptors (ACKRs) which engage in ligand CCR2 is an example of a dual-function receptor that directly regulates both cell migration and scavenging

  • Structural basis for receptor selectivity and inverse agonism in S1P5 receptors

    The bioactive lysophospholipid sphingosine-1-phosphate (S1P) acts via five different subtypes of S1P receptors Several S1PR therapeutic drugs have been developed to treat these diseases; however, they lack receptor In this article, we describe a 2.2 Å resolution room temperature crystal structure of the human S1P5 receptor demonstrates a unique ligand-binding mode, involving an allosteric sub-pocket, which clarifies the receptor

  • The Impact of CB1 Receptor on Nuclear Receptors in Skeletal Muscle Cells

    influence predominantly arises via engagement with the principal two G-protein-coupled cannabinoid receptors Earlier publications have indicated that expression of CB1 receptor mRNA and protein has been recognized The part played by CB1 receptor activation or inhibition with respect to these functions and relevant This can be deduced from the qRT-PCR assays; triggering CB1 receptors amplifies both NR4A1 and NR4A3 The impact of ACEA is inhibited by the selective CB1 receptor antagonist, rimonabant.

  • Recurrent hypoglycemia increases hepatic gluconeogenesis without affecting glycogen metabolism or sy

    recurrent hypoglycemia, we first checked expression of counterregulatory hormone G-protein coupled receptors Then, we examined epinephrine-induced phosphorylation of PKA substrates to validate adrenergic sensitivity

  • Structural landscape of the Chemokine Receptor system

    Chemokine receptors (CKRs) belong to a subfamily of G-protein-coupled receptors (GPCRs) and play a crucial chemokine system exhibits great versatility, with more than 50 chemokines interacting with over 20 receptors complexes and revealing the diverse and multifaceted nature of the chemokine receptor system. Currently, there are more than 40 available structures of chemokines and their receptors in the Protein This structural variation may explain why chemokine receptors typically recognize chemokines from only

  • Effects of Small Molecule Ligands on ACKR3 Receptors

    August 2022 "Abstract Chemokines such as stromal derived factor 1 and their G protein coupled receptors C-X-C motif chemokine ligand 12 (CXCL12) has two receptors: C-X-C chemokine motif receptor 4 (CXCR4) and atypical chemokine receptor 3 (ACKR3). ACKR3 has been described as an atypical "biased" receptor because it does not appear to signal through atypical chemokine receptor 3 (ACKR3), which signals atypically.

  • Endosomal parathyroid hormone receptor signaling

    October 2022 "The canonical model for G protein-coupled receptors (GPCRs) activation assumes that stimulation In this model, GPCR signaling is turned-off by receptor phosphorylation via GPCR kinases (GRKs) and subsequent recruitment of β-arrestins, resulting in receptor internalization into endosomes. Internalized receptors can then recycle back to the cell surface or be trafficked to lysosomes for degradation This is the case for the parathyroid hormone (PTH) type 1 receptor (PTHR), which engages on sustained

  • Chemokine receptor-targeted drug discovery: progress and challenges

    The chemokine receptor system is implicated in a wide range of inflammatory, autoimmune and infectious The involvement of chemokines and their receptors in several aspects of cancer biology, represents a This redundancy can be seen as problematic in drug discovery as blocking a single receptor might not Therefore, an alternative approach is to make use of chemokine receptors redundancy and the fact that Furthermore, both chemokines and receptors can homo- and hetero-oligomerize, impacting receptor/ligand-binding

  • Adenosine receptor signalling in Alzheimer's disease

    Emerging evidence suggests adenosine G protein-coupled receptors (GPCRs) are promising therapeutic targets The adenosine A1 and A2A receptors are expressed in the human brain and have a proposed involvement in Targeting these receptors preclinically can mitigate pathogenic β-amyloid and tau neurotoxicity whilst accessible summary of the literature on Alzheimer's disease and the therapeutic potential of A1 and A2A receptors Although there are no available medicines targeting these receptors approved for treating dementia, we

  • Adenosine receptor signalling in Alzheimer's disease

    Emerging evidence suggests adenosine G protein-coupled receptors (GPCRs) are promising therapeutic targets The adenosine A1 and A2A receptors are expressed in the human brain and have a proposed involvement in Targeting these receptors preclinically can mitigate pathogenic β-amyloid and tau neurotoxicity whilst accessible summary of the literature on Alzheimer's disease and the therapeutic potential of A1 and A2A receptors Although there are no available medicines targeting these receptors approved for treating dementia, we

  • Diversification of PAR signaling through receptor crosstalk

    October 2022 "Protease activated receptors (PARs) are among the first receptors shown to transactivate other receptors: noticeably, these interactions are not limited to members of the same family, but involve receptors as diverse as receptor kinases, prostanoid receptors, purinergic receptors and ionic channels the evidence for PAR interactions with members of their own family, as well as with other types of receptors pathological relevance of these interactions, since this additional level of molecular cross-talk between receptors

  • Specific Functions of Melanocortin 3 Receptor (MC3R)

    October 2022 "Melanocortin 3 receptor (MC3R) is a G-protein coupled receptor (GPCR) that is defined

  • Biased Agonism at the GLP-1 Receptor: A Pathway to Improved Therapeutic Outcomes

    Biased agonism is a phenomenon where different ligands acting on the same receptor trigger distinct signaling is gaining significant attention in drug discovery, especially in the context of G protein-coupled receptors (GPCRs) like the glucagon-like peptide-1 receptor (GLP-1R). Additionally, GLP-1R couple to G protein-coupled receptor kinases (GRKs) and recruit β-arrestins, adding For instance, the interaction of GLP-1 with ECL3, which leads to a tight conformation of the receptor's

  • C5aR2 receptor: The genomic twin of the flamboyant C5aR1

    C5a is established to interact with a set of genomically related transmembrane receptors, like C5aR1 The C5aR1 is a classical G-protein-coupled receptor (GPCR), whereas C5aR2 is a nonclassical GPCR that

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