ep4 receptor

EP4 receptor antagonist 4 is an agonist of EP4 receptor (human pEC 50 = 6.3) [1].

EP4 receptor antagonist 2 (compound 2-13) is a potent agonist of the EP4 receptor, with an IC50 of 7.8 nM, and exhibits antitumor effects.

EP4 receptor antagonist 3 is a highly potent and specific inhibitor of the EP4 receptor, intended for research purposes in studying EP4 receptor-mediated diseases, including acute and chronic pain, osteoarthritis, rheumatoid arthritis, and cancer.

EP4 Receptor Antagonist 1 is a highly potent and selective competitive prostanoid EP4 receptor antagonist, effective for cancer immunotherapy. It inhibits both human and mouse EP4 receptors with IC50 values of 6.1 nM and 16.2 nM, respectively, while displaying minimal activity (IC50s >10 μM) against human EP1, EP2, and EP3 receptors.

EP4 receptor agonist 2 (compound 31) is a potent EP4 receptor agonist, demonstrating an EC50 value of 0.8 nM and K_i values of >100,000, 38,000, and 3.1 nM for the EP2, EP3, and EP4 receptors, respectively [1].

EP4 receptor agonist 3 is an activator of the EP4 receptor and is useful for research in the DSS-induced colitis mouse model.

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.

Prostaglandin E2 (PGE2) is a naturally occurring hormone involved in various physiological processes, such as smooth muscle contraction and relaxation, vasodilation and constriction, blood pressure regulation, and inflammatory regulation.

MK-2894 is a prostaglandin receptor 4 antagonist.MK-2894 has anti-inflammatory activity and may be used in the study of inflammation.

Aganepag, a potent Prostanoid EP2 receptor agonist, exhibits remarkable selectivity with an EC50 of 0.19 nM, demonstrating no activity at the EP4 receptor. Its applications are primarily in the fields of wound healing, scar reduction, scar prevention, and the treatment and prevention of wrinkles.

TP-16 is a novel potent and selective EP4 antagonist that blocks the function of IMCs and enhances cytotoxic T cell-mediated tumor elimination in vivo.

L-161982 is a selective EP4 receptor antagonist that inhibits PGE2-induced ERK phosphorylation and cell proliferation in HCA-7 cells and alleviates collagen-induced arthritis in mice.

Rebamipide (OPC12759) is a quinolinone derivative with anti-ulcer and anti-inflammatory activities. Rebamipide induces cyclooxygenase 2 (COX2) synthesis which results in an increase in endogenous prostaglandin synthesis in the gastric mucosa. This agent also inhibits H. pylori-induced production of tumor necrosis factor (TNF) alpha and subsequent inflammation of the gastric mucosa. In addition, rebamipide scavenges oxygen-derived free radicals that potentially cause mucosal injury, and stimulates prostaglandin EP4 receptor gene expression followed by mucous secretion, thereby enhancing the gastric mucosal defense.

L-902688 is an orally active EP4 receptor agonist (Ki: 0.38 nM; EC50: 0.6 nM). L-902688 displays >4,000-fold selective for EP4 over other EP and prostanoid receptors.

ONO-AE3-208 (AE 3-208) is an EP4 antagonist. It suppresses cell migration, invasion, and metastasis of prostate cancer.

PF-04418948 is a potent EP2 receptor antagonist (IC50 = 16 nM for human EP2 receptors). Displays over 2000-fold selectivity for EP2 receptors over EP1, EP3, EP4, DP1 amd CRTH2 receptors; exhibits <30% binding at a diverse panel of GPCRs and ion channels at a concentration of 10 μM. Inhibits PGE2-induced increases in intracellular cAMP; reverses PGE2-invoked relaxation of mouse trachea (IC50 = 2.7 nM).

Prostaglandin E1 (Alprostadil) is the naturally occurring prostaglandin E1 (PGE1) which displays a variety of pharmacologic actions. Prostaglandin E1 is a potent vasodilator agent that increases peripheral blood flow, inhibits platelet aggregation, and induces bronchodilation. Used in the treatment of erectile dysfunction, this agent produces corporal smooth muscle relaxation by binding to PGE receptors, resulting in the activation of adenylate cyclase and the subsequent accumulation of 3'5'-cAMP.

AAT-008 is a PGE2 receptor EP4 antagonist.

KAG-308 is an effective selective and orally active agonist of the EP4 receptor (Ki: 2.57 nM and EC50: 17 nM for human EP4 receptor), more selective over EP1, EP2, EP3, and IP receptor. KAG-308 suppresses colitis and promotes histological mucosal healing,

The prostaglandin E receptor 4 (EP4) is one of four G protein-coupled receptors that mediate the actions of prostaglandin E2 . Binding of PGE2 to the EP4 receptor causes an increase in intracellular cyclic AMP, which plays important roles in bone formation and resorption, cancer, and atherosclerosis. KMN-80 is a substituted γ-lactam (pyrrolidinone) derivative of PGE1 that acts as a selective and potent agonist of EP4 with an IC50 value of 3 nM (IC50 = 1.4 μM for EP3 and > 10 μM for all other prostanoid receptors). In functional assays it has been shown to stimulate secreted alkaline phosphatase gene reporter activity in EP4-transfected HEK293 cells with an EC50 value of 0.19 nM, demonstrating >5,000 and 50,000-fold selectivity against EP2 and TP, respectively. KMN-80 can induce the differentiation of bone marrow stem cells from both young and aged rats into osteoblasts in vitro (EC50s = 20 and 153 nM, respectively) and exhibits favorable tolerability up to at least 10 μM, whereas the EP4 agonist L-902,688 is highly cytotoxic at similar concentrations in these cells. KMN-80 has been used to repair calvarial defects in an in vivo rat craniomaxillofacial reconstruction model (rate of reduction in defect size equivalent to BMP-2 treated rats) and to promote bone formation in a rat incisor tooth socket model.

TCS 2510 (CAY10598) is a selective PGE2 and EP4 receptor agonist that enhances the intracellular concentration of cAMP and the abundance of active β-caten.TCS 2510 inhibits TNF-alpha production and may be useful in the study of diseases associated with metabolic disorders.

GSK726701A is a new type of prostaglandin E2 receptor 4 (EP4) partial agonist (pEC50: 7.4).

Butaprost is a chemical compound that functions as a selective agonist for the prostaglandin E receptor (EP2). It exhibits an EC50 of 33 nM and a Ki of 2.4 μM when interacting with the murine EP2 receptor. However, Butaprost demonstrates lower activity against murine EP1, EP3, and EP4 receptors. Furthermore, it effectively attenuates fibrosis by inhibiting the TGF-β/Smad2 signaling pathway [1] [2] [3].

EP4-IN-1 is a potent prostaglandin EP4 receptor inhibitor with potential anti-tumor, anti-inflammatory, and analgesic activities for studying immune and tumor diseases.