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This $60,000 grant from Diabetes Research WA will assist the Perkins' Molecular Endocrinology and Pharmacology Read more at the source #DrGPCR #GPCR #IndustryNews

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potential global development of ADX71149 for the treatment of epilepsy. " Read more at the source #DrGPCR #GPCR

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"Protecting neurons from death during oxidative and neuroexcitotoxic stress is key for preventing cognitive dysfunction. We uncovered a novel neuroprotective mechanism involving interaction between neurotrophic factor-α1 (NF-α1/carboxypeptidase E, CPE) and human 5-HTR1E, a G protein-coupled serotonin receptor with no previously known neurological function. Co-immunoprecipitation and pull-down assays confirmed interaction between NFα1/CPE and 5-HTR1E and 125I NF-α1/CPE-binding studies demonstrated saturable, high-affinity binding to 5-HTR1E in stably transfected HEK293 cells (Kd = 13.82 nM). Treatment of 5-HTR1E stable cells with NF-α1/CPE increased pERK 1/2 and pCREB levels which prevented a decrease in pro-survival protein, BCL2, during H2O2-induced oxidative stress. Cell survival assay in β-arrestin Knockout HEK293 cells showed that the NF-α1/CPE-5-HTR1E-mediated protection against oxidative stress was β-arrestin-dependent. Molecular dynamics studies revealed that NF-α1/CPE interacts with 5-HTR1E via 3 salt bridges, stabilized by several hydrogen bonds, independent of the serotonin pocket. Furthermore, after phosphorylating the C-terminal tail and intracellular loop 3 (ICL3) of NF-α1/CPE-5-HTR1E, it recruited β-arrestin1 by forming numerous salt bridges and hydrogen bonds to ICL2 and ICL3, leading to activation of β-arrestin1. Immunofluorescence studies showed 5-HTR1E and NF-α1/CPE are highly expressed and co-localized on cell surface of human hippocampal neurons. Importantly, knock-down of 5-HTR1E in human primary neurons diminished the NF-α1/CPE-mediated protection of these neurons against oxidative stress and glutamate neurotoxicity-induced cell death. Thus, NF-α1/CPE uniquely interacts with serotonin receptor 5-HTR1E to activate the β-arrestin/ERK/CREB/BCL2 pathway to mediate stress-induced neuroprotection." Read full article

Watch Episode 172 The Bigger Picture: GPCR Science Meets Public Health At its core, Catherine Demery’ For scientists, this means rethinking how we study GPCR-mediated respiratory depression. First responders describe revivals that don’t feel like revivals, as if the body is still trapped in a pharmacological For scientists, they sharpen our understanding of how different GPCR systems interact to produce respiratory In other words, this is GPCR science with immediate, life-or-death consequences.

GPCRs represent major drug targets, as indicated by the fact that about 40% of all drugs currently used in clinical practice mediate their therapeutic effects by acting on GPCRs. Like many other organs, various GPCRs play a role in regulating liver function. It is predicted that more than 50 GPCRs are expressed in the liver. However, our knowledge of how GPCRs regulate liver metabolism and fibrosis in the different cell types

accelerate and improve the prediction of first-in-class small molecule agonists for a challenging orphan GPCR #ai #biotech #systemsbiology #drugdiscovery #gpcr #deeptech #orphandrugs #pharma #partnerships #AI4drugdiscovery " Read more at the source #DrGPCR #GPCR #IndustryNews

Despite its therapeutic potential, CB2 pharmacology remains difficult to interrogate with confidence. chemistry decisions Why Live-cell High-Content Screening Matters for CB2 Ligand Profiling CB2 is a GPCR For GPCR programs—where trafficking, receptor reserve, and internalization are common confounders—access For researchers working in cannabinoid pharmacology, inflammation, or GPCR-mediated analgesia, these

Because when true pharmacological profiling is essential—like detecting partial or inverse agonism—calcium If you're starting out in pharmacology, this lesson gives you the interpretive tools to ask smarter questions calcium assays with strategic clarity. 📍 Foundational Level | Calcium Assays 📚 Part of Terry Kenakin’s Pharmacology

protein-coupled receptor expression: Implications for metabolic regulation G protein-coupled receptors (GPCRs their secretion of insulin, and islet function can be modified by ligands acting at the large number of GPCRs is altered under pathophysiological conditions and, in this review, we have compared expression of GPCR We have also considered the likely outcomes on islet function that the altered GPCR expression status confers and the possible impact that adipokines, secreted from expanded fat depots, could have at those GPCRs

Hello Dr.GPCR readers! This is Lucía from the Celtarys Research chemistry team.  For our very first post in this ecosystem, we wanted to highlight a huge part of our work at Celtarys Research: conjugation strategies. You can check what we do here on our website!   Conjugation strategies for small molecules are very versatile! In this case, we would like to focus on the synthesis of fluorescent probes. Traditionally, the most reliable and commonly used method is the amide coupling  using acid and amine .[ 1 ] This method has several advantages: it is usually very robust, good yields, reagents are found in most chem labs (like HATU, HoBT, EDCI etc.). Still, there are some downsides, such as the byproduct obtained by the O-acylisourea rearranging intramolecularly into the N-acylurea.[ 2]     NHS ester amide coupling  is the most suited for bioconjugation with proteins, DNA, etc, thanks to its reaction with the free amino groups present in these biomolecules. NHS esters are not very stable even in aqueous environment but they only need a slightly basic medium for the reaction to work, so they have to be used quickly and stored correctly. Not only do they work in aqueous medium, but also in aprotic solvents like DMF, where you will need to add a base such as TEA. [ 3]     Maleimide  conjugation with thiols  present Cys residues. This conjugation is very useful for tagging biomolecules and can also be used to develop fluorescent probes with small molecules. Its biggest advantage is the presence of Cys residues in proteins, although sometimes S-S bridge reduction is needed, and how quickly the reaction takes place. The biggest detractor? It’s reversible under non-reducing conditions. [ 4]     Other strategies include click chemistry,  more specifically, the CuAAC (Cu(I)- catalyzed azide-alkyne 1,3-dipolar cycloaddition), which is a very robust conjugation strategy to obtain linkers with a rigid moiety (the triazol). But it also presents some issues, such as synthesizing the as the presence of the copper catalyst, which has to be removed completely, otherwise it can quelate biomolecules or induce cell toxicity. [ 5]     At Celtarys’ we have our conjugation strategy - our own proprietary technology- which bypasses some of the issues seen before. There’s no need for any catalysts; all reagents will be incorporated in the structure of the final compound. The reaction is convergent, efficient and robust. Thanks to the unique linker structure we obtain, which can be divided into three differentiated parts, we can modify the rigidity of the linker as well as the physicochemical properties of the whole probe. This property comes from the wide chemical space this reaction can access – we can substitute one reagent and make an unprecedented combination, also using commercially available precursor, which improves the performance of the probes.  It also poses some disadvantages – just like acid-amine amide coupling, some byproducts are obtained during the synthesis. However, these are usually easily removable. Besides, it’s an eco-friendlier method, which always helps future-proof our probes!  References   (1) Brown, D. G.; Boström, J. Analysis of Past and Present Synthetic Methodologies on Medicinal Chemistry: Where Have All the New Reactions Gone?: Miniperspective. J. Med. Chem.   2016 , 59  (10), 4443–4458. https://doi.org/10.1021/acs.jmedchem.5b01409 .   (2) Sam, S.; Touahir, L.; Salvador Andresa, J.; Allongue, P.; Chazalviel, J.-N.; Gouget-Laemmel, A. C.; Henry De Villeneuve, C.; Moraillon, A.; Ozanam, F.; Gabouze, N.; Djebbar, S. Semiquantitative Study of the EDC/NHS Activation of Acid Terminal Groups at Modified Porous Silicon Surfaces. Langmuir   2010 , 26  (2), 809–814. https://doi.org/10.1021/la902220a .   (3) Fan, J.; Toth, I.; Stephenson, R. J. Chapter Three - Bioconjugated Materials in the Development of Subunit Vaccines. In Comprehensive Analytical Chemistry ; Verma, S. K., Das, A. K., Eds.; Elsevier, 2023; Vol. 103, pp 59–103. https://doi.org/10.1016/bs.coac.2023.02.005 .   (4) Fontaine, S. D.; Reid, R.; Robinson, L.; Ashley, G. W.; Santi, D. V. Long-Term Stabilization of Maleimide–Thiol Conjugates. Bioconjugate Chem.   2015 , 26  (1), 145–152. https://doi.org/10.1021/bc5005262 .   (5) Meldal, M.; Tornøe, C. W. Cu-Catalyzed Azide−Alkyne Cycloaddition. Chem. Rev.   2008 , 108  (8), 2952–3015. https://doi.org/10.1021/cr0783479 .

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In this sense, G protein-coupled receptors (GPCRs) may be a good option to try to prolong our life while In this way, we present the analysis of a series of GPCRs whose activity has been shown to affect the Our compilation of data revealed that the mechanisms most involved in the role of GPCRs in lifespan are possibility of using agonist or antagonist drugs, depending on the beneficial or harmful effects of each GPCR

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vitro and in vivo data suggest that GHSR1a heterodimerises with multiple G protein-coupled receptors (GPCRs This review discusses the signalling mechanisms of GHSR1a alone and in combination with other GPCRs, and explores the physiological consequences of GHSR1a coupling with other GPCRs.

Bitter taste receptors (TAS2Rs) are a poorly understood subgroup of G protein-coupled receptors (GPCRs Using current knowledge on class A GPCRs and existing experimental data in the literature as constraints

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It’s rigorous pharmacology, but deeply tied to urgent public health needs.

structural positions in class A G protein-coupled receptors expressed in tumors G protein-coupled receptors (GPCRs Because there are many more GPCRs than effectors, mutations in different receptors could perturb signaling may not be enriched within a single gene but rather that cognate mutations with similar effects on GPCR To test this possibility, we systematically aggregated somatic cancer mutations across class A GPCRs The possibility that multiple different GPCRs could moonlight as drivers or enablers of a given cancer

mechanosensation-dependent behavior in C. elegans via a trans function Latrophilins are highly conserved Adhesion GPCRs

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We also identified two Gs-coupled GPCRs that are endogenously expressed by SKM at relatively high levels

of the Inflammatory Cytokine IL-6 and Is Dependent on NF-κB Signaling G protein-coupled receptors (GPCRs Members of the Mas-related G protein coupled receptors (MRGPRs), a subfamily of GPCRs, are largely expressed