GPCR/G-Protein

<p>Inupadenant (EOS-850) is a selective A2a receptor antagonist, targeting immunosuppression in tumors.</p>

<p>EP4 receptor antagonist 7 (Compound 14) is an antagonist of the prostaglandin E2 (PGE2) receptor subtype EP4, with an IC50 of 1.1 nM. This compound inhibits PGE2-induced β-arrestin recruitment in HEK293 cells with an IC50 of 0.9 nM. In RAW 264.7 macrophages, it reduces the expression of PGE2-induced IL-4, macrophage mannose receptor 1 (Mrc1), chitinase-like protein 3 (Chil3), chemokine (C-X-C motif) ligand 1 (Cxcl1), triggering receptor expressed on myeloid cells 2 (Trem2), and arginase 1 (Arg1) mRNA. In the CT26 mouse colon cancer model, EP4 receptor antagonist 7, combined with an anti-PD-1 antibody, inhibits tumor growth and enhances CD8+ T cell infiltration into the tumor.</p>

<p>AMG-369 (AMG 247) is an S1P1/S1P5 dual agonist that delays the development of experimental autoimmune encephalomyelitis in rats.</p>

<p>Tebideutorexant, an orexin-1 receptor antagonist, shows anti-panic effects in rodents and humans, providing a tool for stress response and psychiatric research.</p>

<p>Gemilukast (ONO-6950) is a cysteinyl leukotriene 1 and 2 receptor inhibitor that inhibits bronchoconstriction and is used in the treatment of asthma.</p>

<p>Compound 21a: Oral GnRH-R antagonist, IC50=0.57 nM, potent against prostate cancer/prevents LH surges.</p>

SB 243213 hydrochloride is an orally active, selective and high-affinity antagonist of 5-hydroxytryptamine (5-HT)2C receptor(pKi of 9.37 and a pKb of 9.8).It

<p>Mrgx2 antagonist-3 (Compound B-40) is a highly selective antagonist of the MrgX2 receptor, with an IC50 range of 0.042-2.5 nM. It blocks downstream G protein signaling and β-arrestin recruitment, inhibiting Mrgx2 receptor-mediated calcium influx and cell degranulation. Mrgx2 antagonist-3 shows potential for research in inflammation-associated diseases and pruritus, such as chronic urticaria and allergic asthma.</p>

<p>GRK6-IN-5 is an inhibitor of the GRK6 polypeptide, with an IC50 of 4.48 μM. GRK6-IN-5 is utilized in research focused on hematological malignancies, inflammatory diseases, and autoimmune disorders.</p>

<p>(R)-MrgprX2 antagonist-3 is an antagonist of MrgprX2. It is applicable in the study of inflammatory skin diseases. For more detailed information, please refer to compound E118 in patent document WO2021092240A1.</p>

<p>MRGPRX2 modulator-1 (example 17), a modulator of the mas-related G-protein receptor X2 (MRGPRX2), is employed in studies focused on inflammation, pain, and autoimmune disorders [1].</p>

<p>BIBO3304 (diTFA), a selective neuropeptide Y (NPY) Y1 receptor antagonist, demonstrates oral efficacy. It exhibits high affinity for Y1 receptors in both humans and rats, with IC50 values of 0.38 nM and 0.72 nM, respectively. Additionally, BIBO3304 (diTFA) enhances bone-tendon healing via the Wnt/β-catenin signaling pathway [1] [2] [3].</p>

<p>Nipradolol blocks alpha-1-adrenergic receptors, lowers IOP in rabbits, and reduces NA-induced muscle contraction and dog artery vasodilation.</p>

<p>Potent, oral MRGPRX1 agonist 4 modulates receptor positively (EC50: 0.1 μM) and reduces mice's thermal allergy response.</p>

<p>EP4 receptor antagonist 2 (compound 2-13) is a potent agonist of the EP4 receptor (IC50: 7.8 nM) and has antitumour effects.</p>

BW A868C is a potent, selective PGD2 antagonist and a BW245C analogue, inert to other prostaglandin receptors.

<p>AAZ-A 154 is a selective, competitive, and non-hallucinogenic antagonist of the 5-HT2AR. It promotes neuronal growth in rodents and results in lasting beneficial behavioral effects.</p>

<p>GPR27 agonist-1 (compound I) is a selective agonist for GPR27 with a pEC50 value of 6.34.</p>

<p>NK1 Receptor Antagonist 2, a compound targeting the NK1 receptor, holds potential for tinnitus and hearing loss research.</p>

<p>IMP-1575 is a highly effective inhibitor of hedgehog acyltransferase (HHAT), with an IC50 of 0.75 μM when inhibiting purified HHAT. IMP-1575 has potential applications in cancer research.</p>

<p>Beloxepin is an oral dual selective inhibitor of serotonin and norepinephrine uptake.</p>

<p>BI-113823 is an orally active and selective bradykinin B1 receptor antagonist. It alleviates mechanical hyperalgesia induced by complete Freund's adjuvant in rats. BI-113823 is applicable for research on chronic inflammatory pain.</p>

<p>Zaladenant is an adenosine receptor antagonist with antitumor properties.</p>

<p>D3/5-HT receptor modulator-1 (compound 5i) is a selective antagonist of the dopamine D3 and 5-HT2A receptors, and a partial agonist at the 5-HT1A receptor. It exhibits Ki values of 4.5 nM, 11.9 nM, and 15.3 nM for the dopamine D3, 5-HT2A, and 5-HT1A receptors respectively. The compound shows lower affinity for the dopamine D2 receptor, 5-HT2C receptor, and hERG channel. D3/5-HT receptor modulator-1 possesses atypical antipsychotic properties.</p>

<p>25B-NBOH hydrochloride is a phenethylamine that exhibits high affinity for serotonin (5-HT) receptors 5-HT2A and 5-HT2C, with pKi values of 8.3 and 9.4, respectively.</p>

<p>BAY-3153 is a selective CCR1 ( C-C motif chemokine receptor 1 ) antagonist (human IC 50 =3 nM ; rat IC 50 =11 nM ; mice IC 50 =81 nM) .</p>

<p>LY3154207: selective, potent oral human dopamine D1 receptor PAM, low agonist activity, EC50=3 nM.</p>

<p>MSX-3 is an antagonist of the A2A adenosine receptor and a prodrug of MSX-2.</p>

<p>Compound 13 is a PAR-1 antagonist with a 3 nM IC50, useful for thrombosis and heart disease research.</p>

<p>Aplaviroc (AK 602), a SDP derivative, is a CCR5 antagonist. With IC50s of 0.1-0.4 nM for HIV-1Ba-L, HIV-1JRFL and HIV-1MOKW.</p>

<p>Compound 29 is a potent, CB2-selective antagonist/reverse agonist. Derivatives 23 &amp; 24 offer antinociception; 24 activates cannabinoid/TRPV1 receptors.</p>

<p>MRS4865 (compound 7a) serves as a chimeric antagonist for the P2Y14 receptor and an agonist for UDP-glucose, offering protection against neuropathic pain.</p>

<p>Opipramol (Ensidon) is an atypical tricyclic antidepressant (TCA) primarily functioning as a sigma (σ) receptor agonist. It interacts effectively with sigma recognition sites, having a Ki value of 50 nM. Opipramol is applicable in the study of generalized anxiety disorder (GAD).</p>

<p>L-97-1 is an antagonist of the adenosine A1 receptor.</p>

<p>Y1 receptor antagonist 1 is an antagonist of neuropeptide Y1 receptor.</p>

<p>AChE-IN-5: oral, crosses blood-brain barrier, targets AChE/5-HT1A/SERT, potent with 2.29 nM IC50.</p>

<p>BAY 38-7271: potent neuroprotective, selective CB1/CB2 agonist, Ki of 1.85 nM (CB1) &amp; 5.96 nM (CB2).</p>

<p>TAK-661 is an inhibitor of eosinophil chemotaxis (eosinophil chemotaxis) that significantly alleviates late-phase bronchoconstriction while inhibiting the proliferation of eosinophils in bronchoalveolar lavage (BAL) and their infiltration into the airway walls.</p>

<p>LJ-4517 is an effective A2AAR antagonist (Ki=18.3 nM). LJ-4517 can effectively replace the binding of [3H] ZM241385 at WT A2AAR.</p>

<p>Compound 6.4, also known as 5-HT7R antagonist 3, is a selective antagonist of the 5-HT7R with a Ki of 8 nM. It exhibits significantly less affinity towards D2R, 5-HT1AR, and 5-HT2AR with Ki values of 511 nM, 8930 nM, and 5786 nM, respectively. In mice, 5-HT7R antagonist 3 demonstrates anti-depressant and anti-anxiety activities.</p>

<p>YM-31636 (free base) is an orally active, potent, and selective agonist of the 5-HT3 receptor with a pKi value of 9.67. This compound induces contraction in isolated guinea pig distal colon and provokes tachycardia in isolated guinea pig right atrium, demonstrating a relative intrinsic activity of about 0.23. YM-31636 (free base) holds potential for research in constipation management.</p>

<p>L-796778 acetate is a selective sst3 receptor agonist. In CHO-K1 cells expressing hsst3 receptors, it acts as a partial agonist that inhibits Forskolin-induced cAMP production, with an IC50 value of 18 nM. Additionally, L-796778 acetate exhibits anticonvulsant properties.</p>

<p>NMDAR antagonist 5 (Compound A17) is a multi-target antagonist that acts on NMDAR and monoamine transporters (SERT, DAT, and NET). It demonstrates strong NMDAR antagonistic efficacy (IC50= 0.3 μM) and effective activity on monoamine transporters (SERT IC50= 1.1 μM, DAT IC50= 0.7 μM, NET IC50= 2.7 μM). NMDAR antagonist 5 exhibits high safety with low toxicity (hepatic and renal toxicity IC50&gt; 100 μM; cardiac toxicity IC50= 24.5 μM). It has antidepressant properties and is useful for depression research.</p>

<p>Tiprenolol hydrochloride is a β-adrenoceptor (β-adrenoceptor) antagonist. This compound is effective in eliminating ventricular arrhythmias in dogs caused by intravenous administration of adrenaline, following inhalation of halothane.</p>

<p>Apafant (WEB 2086) is a PAF antagonist that blocks eosinophil activation and can be used to study experimental allergic conjunctivitis in guinea pigs.</p>

<p>AFP-07 is a highly selective and potent agonist. It was used for the prostacyclin receptor.</p>

<p>SSTR4 agonist 4, potent in pain research, shows promise in rodent pain models, with potential for Alzheimer's due to hippocampus activity.</p>

U91356 is an agonist of the dopamine receptors.

<p>NBI 35965 hydrochloride is a selective CRF1 (corticotropin-releasing factor receptor 1) antagonist that is both orally active and capable of penetrating the brain. It possesses a K i value of 4 nM and a pK i of 8.5, and does not affect CRF2. This compound effectively diminishes CRF or stress-triggered ACTH (adrenocorticotropic hormone) production in vivo, demonstrating pIC 50 values of 7.1 and 6.9. Additionally, NBI 35965 hydrochloride exhibits anxiolytic properties [1] [2].</p>

Remlifanserin is a potent inverse agonist of the serotonin receptor (5-HT2A).

Tixanox sodium effectively blocks histamine release in the lungs triggered by anti-IgE. It has also been demonstrated that when administered orally, Tixanox sodium can successfully counteract exercise-induced asthma.

<p>PF-4693627 is an effective and selective microsomal prostaglandin E synthase-1 inhibitor (IC50=3 nM).</p>

<p>P2Y2 and P2Y4 receptor agonist</p>

<p>Tonapofylline, orally active, selectively blocks A1 adenosine receptor (Ki: 7.4 nM), used in heart failure research.</p>

<p>Aeruginosin 98-B, a protease inhibitor, effectively inhibits trypsin, plasmin, and thrombin with IC50 values of 0.6, 7.0, and 10.0 μg/mL, respectively.</p>

<p>HU-308, a synthetic cannabinoid analogue, is a highly selective agonist of the CB2 receptor. It demonstrates an affinity for the CB2 receptor that is over 440 times greater than its affinity for the CB1 receptor, which are predominantly found in immune cells. This compound plays a crucial role in modulating the immunosuppressive effects of the endocannabinoid system (ECS). Additionally, HU-308 possesses anti-inflammatory and neuroprotective properties, and it regulates the function of microglia. Its potential applications include research into neuroinflammation and retinal diseases.</p>

<p>VGD071, a compound that targets sortilin, presents a promising avenue for forthcoming research utilizing mouse models of breast cancer.</p>

<p>CB1/2 receptor-1 (compound 5.3) serves as an agonist for CB1/2 receptors and is utilized in angiogenesis research.</p>

<p>MK-8318 is an effective and selective antagonist of the CRTh2 receptor (Ki: 5.0 nM).</p>

<p>SSTR5 antagonist 6, an orally active antagonist specific to the somatostatin receptor subtype 5 (SSTR5), exhibits an IC50 value of 24 nM. This compound is utilized in researching type 2 diabetes [1].</p>

<p>Bzo-poxizid is a synthetic cannabinoid and a psychoactive substance.</p>

<p>Rocavorexant is an antagonist of the orexin-1 receptor (orexin-1 receptor), exhibiting a pIC50 value of 9.1 for human OX1 and a pIC50 of 6.0 for human OX2.</p>

<p>DA-302168S is an orally active, selective GLP-1R agonist with an EC50 value of 1.32 nM. It promotes insulin secretion and has a hypoglycemic effect. Additionally, DA-302168S reduces food intake. It primarily activates GLP-1R in humans and monkeys, with minimal effect on GLP-1R in rats, mice, and dogs. DA-302168S can be used for research in type 2 diabetes and obesity.</p>

<p>CCR1 antagonist13 is a selective small molecule antagonist of CCR1.</p>

<p>APJ receptor agonist 8 is a small molecule agonist of the APJ receptor, enhancing load-independent cardiac contractility in isolated perfused rat hearts.</p>

<p>Taranabant: potent CB1 receptor inverse agonist; inhibits agonists with 0.13 nM Ki in vitro.</p>

<p>EP-3945 is an agonist of Mas-related G protein-coupled receptors (MRGPR), exhibiting greater potency than the small molecule agonist β-Alanine targeting MRGPRD. MRGPRs play a crucial role in inflammatory itch and pain perception. These receptors interact with Gq (MRGPRX2, MRGPRX4, and MRGPRX1 are coupled with Gq; MRGPRX2 and MRGPRD couple with Gi), with EP-3945 having an EC50 value of 211.6 nM for Gq.</p>

<p>RGH-122 (compound 43), characterized as an orally active, potent, and selective hV1a receptor antagonist, demonstrates significant affinity with a K i value of 0.3 nM and an IC 50 of 0.9 nM. It exhibits microsomal stability, indicated by a CL int value of 13/28/25 μL/min/mg [1].</p>

<p>CBR Agonist-1 targets CB1R and CB2R with Ki of 0.18 μM and 1.22 μM, useful for studying cannabinoid-related diseases.</p>

<p>Pentacosafluorotridecanoic Acid (PFTrDA) is a perfluoroalkyl substance (PFAS) that exhibits various biological impacts across different species. In zebrafish embryos, exposure to PFTrDA induces yolk sac edema and increases mRNA expression of thyroid hormone synthesis genes, including tshβ, at concentrations of 0.1 and 0.3 mg/L. At a dosage of 10 mg/kg, PFTrDA reduces serum testosterone and luteinizing hormone levels, as well as palmitic acid, linoleic acid, and oleic acid levels in the testicular interstitial cells of late adolescent rats. In humans, maternal plasma levels of PFTrDA during pregnancy are positively correlated with the development of eczema in female infants (but not male infants), and PFTrDA levels are higher in the livers of cancerous humans compared to non-cancerous ones. Additionally, PFTrDA is found in marine mammals.</p>

<p>Enprostil: synthetic PGE2 analog, reduces gastric acid, protects mucosa, lowers post-meal gastrin, treats ulcers effectively and safely.</p>

LRH-1 modulator-1: potent agonist, boosts IL-10, reduces IL-1b/TNFa, anti-inflammatory in gut.

<p>WIN 66306: Cyclic heptapeptide, blocks NK1/NK2 receptors, inhibits substance P-triggered contractions in guinea pig ileum.</p>

<p>Disulergine is a dopamine receptor agonist. It also prolactin release-inhibiting 8 alpha-amino-ergoline.</p>

<p>LX2761 is a stable inhibitor for SGLT1/2 with IC50s of 2.2/2.7 nM; it targets SGLT1 in the GI tract.</p>

<p>Setomagpran is an antagonist of the mas-related G protein-coupled receptor (MRGPR) and possesses anti-inflammatory properties.</p>

<p>SphK1-IN-1: SphK1 ATPase inhibitor, IC50=2.48 μM, potential for cancer research.</p>

<p>SGLT1/2-IN-8 (compound 8) is a potent and orally active dual inhibitor of SGLT1/2, exhibiting IC50 values of 4 nM and 1 nM, respectively. It shows antihyperglycemic properties, making it suitable for related research.</p>

<p>MRT-92 is an antagonist of Smoothened (Smo) with anti-cancer activity, featuring a binding affinity (Ki) of 0.7 nM. It inhibits the Hedgehog signaling pathway by obstructing the overlapping binding sites within the transmembrane domain of the Smoothened receptor and suppresses the proliferation of cerebellar granule cells in rodents (IC50=0.4 nM). MRT-92 is utilized for research into cerebellar gliomas.</p>

<p>RF9 hydrochloride is a potent and selective Neuropeptide FF receptor antagonist that acts on hNPFF1R (Ki: 58 nM) and hNPFF2R (Ki: 7 nM).</p>

<p>RGS10 modulator-1 (compound 15) is an effective regulator of RGS10. It significantly reverses IFNγ-induced expression of both RGS10 protein and mRNA, as well as COX-2 mRNA and iNOS expression triggered by IFNγ.</p>

<p>DSP-1053: Benzylpiperidine-based, potent SERT inhibitor (Ki=1.02nM), partial 5-HT1A receptor agonist (Ki=5.05nM), antidepressant.</p>

<p>GnRH antagonist 2 is a GnRH receptor antagonist, useful for studying endocrine diseases.</p>

<p>AM8936: potent CB1 agonist, EC50 rCB1=8.6nM/hCB1=1.4nM, Ki rat CB1=0.55nM; potential for CNS, metabolic, pain, glaucoma research.</p>

<p>UK 432097 is an adenosine A2A agonist.</p>

<p>Sulfinalol hydrochloride is an orally active β-adrenoceptor (β-adrenoceptor) antagonist that exhibits direct vasodilatory activity. It is also classified as an antihypertensive agent.</p>

<p>Tipindole is a serotonin antagonist utilized in research related to depression.</p>

<p>Butopamine hydrochloride is an orally active inotropic compound that is more effective at increasing heart rate compared to Dobutamine.</p>

<p>APJ receptor agonist 3 is a highly effective and orally administerable agonist of the APJ receptor, demonstrating a potent EC50 value of 0.027 nM.</p>

<p>BIIE-0246: A potent, non-peptide Y2 receptor antagonist; &gt;650-fold more selective than Y1, Y4, Y5.</p>

<p>ATL444 is an adenosine receptor antagonist with affinity (Ki values) for rA1AR, rA2AAR, rA2BAR, and rA3AR of 7.0, 2.5, 61.8, and &gt;1000 nM, respectively.</p>

<p>UR-AK49 (compound 11) is an agonist for the human histamine H1 and H2 receptors. It exhibits an EC50 of 23 nM in the GTPase assay involving hH2R-Gsalpha fusion protein expressed in Sf9 insect cells. UR-AK49 is applicable in neurologically related research.</p>

<p>MDA77 is a CB2 agonist with an EC50 value of 5.82 nM and exhibits no activity towards CB1.</p>

<p>Substituted piperidines-1 can promote the release of growth hormone in humans and animals.</p>

<p>AA 497, a beta-2 agonist, causes relaxation and suppresses Ca spike frequency.</p>

<p>CBR Agonist-2: CB1 receptor agonist, EC50 - 960 nM, Ki - 970 nM, useful for hCB1R-related disease research.</p>

<p>AH22921 is an EP4 prostaglandin receptor antagonist with the ability to antagonize the activation of adenylyl cyclase by prostaglandins in CHO cells. It induces a rightward shift in the PGE? concentration-response curve in these cells, functioning as a non-competitive antagonist. AH22921 is selective for the EP4 receptor, inhibiting its activity in CHO cells without affecting the PGE? concentration-response curve in NPE cells that contain the EP2 receptor.</p>

<p>Ro 24-4736 is an effective and selective platelet-activating factor antagonist.</p>

<p>Toladryl is a derivative of Diphenhydramine that can cross the blood-brain barrier and exhibits oral activity, with antihistamine and anticholinergic properties. Its anticholinergic effects are approximately a tenth of those seen with Diphenhydramine, yet it offers 2-4 times the protection against lethal doses of histamine in guinea pigs. The side effects of Toladryl are fewer and milder compared to Diphenhydramine; however, at higher doses, it may cause symptoms such as insomnia, agitation, and disorientation related to the central nervous system. Toladryl is utilized in the research of allergic diseases.</p>

<p>Compound 12a (D1R antagonist 1) is a D1R antagonist that participates in both G-protein-coupled and β-arrestin-mediated signaling pathways [1].</p>

<p>GLP-1 Receptor Agonist 11 (compound 3) acts as an effective agonist for the GLP Receptor, finding use in research related to conditions like diabetes and non-alc. fatty liver disease [1].</p>

<p>CVN766 is an orally active orexin 1 receptor antagonist with blood-brain permeability, demonstrating IC50 values of 8 nM for OX1R and &gt;10 μM for OX2R. CVN766 can be used to study schizophrenia [1].</p>