chemokine (c-x-c motif) ligand 1

STING agonist 1a is an agonist of stimulator of interferon genes (STING).1It induces expression of an IRF-inducible SEAP reporter gene in a cell-based assay (EC50= 16.77 μM). STING agonist 1a (12.5-100 μM) induces expression of IFN-β, IL-6, and chemokine (C-X-C motif) ligand 10 (CXCL10) in THP-1 cells, an effect that can be reversed by STING knockout or the STING inhibitor H-151 . 1.Hou, H., Yang, R., Liu, X., et al.Discovery of triazoloquinoxaline as novel STING agonists via structure-based virtual screeningBioorg. Chem.100103958(2020)

CXCR3 antagonist 6c is an antagonist of chemokine (C-X-C motif) receptor 3 (CXCR3).1It inhibits calcium mobilization induced by chemokine (C-X-C motif) ligand 11 (CXCL11) in HEK293 cells expressing the human receptor (IC50= 0.06 μM). It is selective for CXCR3 over a panel of 14 human G protein-coupled receptors at 10 μM. CXCR3 antagonist 6c inhibits CXCR3-mediated migration of isolated human T cells (IC50= ~100 nM). 1.Cole, A.G., Stroke, I.L., Brescia, M.-R., et al.Identification and initial evaluation of 4-N-aryl-[1,4]diazepane ureas as potent CXCR3 antagonistsBioorg. Med. Chem. Lett.16(1)200-203(2006)

EP4 antagonist 14是一种前列腺素E2（PGE2）受体亚型EP4的拮抗剂，其在使用表达人源受体的HEK293细胞的报告基因测定中的IC50值为1.1 nM。它还能抑制PGE2诱导的同种细胞中的β-阿雷斯汀招募（IC50 = 0.9 nM）。EP4 antagonist 14（10 µM）能减少RAW 264.7巨噬细胞中PGE2诱导的mRNA表达，这些mRNA编码Il-4、巨噬细胞甘露糖受体1（Mrc1）、几丁质酶样蛋白3（Chil3）、趋化因子（C-X-C）基序配体1（Cxcl1）、表达在髓样细胞上的触发受体2（Trem2）和精氨酸酶-1（Arg1）。在体内，EP4 antagonist 14（每天30 mg/kg），结合抗PD-1抗体，能够在CT26小鼠结肠癌模型中抑制肿瘤生长并增加CD8+ T细胞对肿瘤的浸润。

(±)14(15)-EET is a metabolite of arachidonic acid that is formed via epoxidation of arachidonic acid by cytochrome P450.[1],[2] It prevents increases in leukotriene B4, ICAM-1, and chemokine (C-C motif) ligand 1 (CCL2) induced by oxidized LDL in primary rat pulmonary artery endothelial cells (RPAECs) when used at a concentration of 1 μM.[3] (±)14(15)-EET induces dilation of preconstricted isolated canine coronary arterioles (EC50 = 0.2 pM).[4] It reduces myocardial infarct size as a percentage of the area at risk in a canine model of ischemia-reperfusion injury induced by left anterior descending coronary artery (LAD) occlusion when administered at a dose of 0.128 mg kg prior to occlusion or reperfusion.[5] Reference：[1]. Chacos, N., Falck, J.R., Wixtrom, C., et al. Novel epoxides formed during the liver cytochrome P-450 oxidation of arachidonic acid. Biochem. Biophys. Res. Commun. 104(3), 916-922 (1982).[2]. Oliw, E.H., Guengerich, F.P., and Oates, J.A. Oxygenation of arachidonic acid by hepatic monooxygenases. Isolation and metabolism of four epoxide intermediates. J. Biol. Chem. 257(7), 3771-3781 (1982).[3]. Jiang, J.-X., Zhang, S.-J., Xiong, Y.-K., et al. EETs attenuate ox-LDL-induced LTB4 production and activity by inhibiting p38 MAPK phosphorylation and 5-LO BLT1 receptor expression in rat pulmonary arterial endothelial cells. PLoS One 10(6), e0128278 (2015).[4]. Oltman, C.L., Weintraub, N.L., VanRollins, M., et al. Epoxyeicosatrienoic acids and dihydroxyeicosatrienoic acids are potent vasodilators in the canine coronary microcirculation. Circ. Res. 83(9), 932-939 (1998).[5]. Nithipatikom, K., Moore, J.M., Isbell, M.A., et al. Epoxyeicosatrienoic acids in cardioprotection: Ischemic versus reperfusion injury. Am. J. Physiol. Heart Circ. Physiol. 291(2), H537-H542 (2006).

CAY10748 is an agonist of stimulator of interferon genes (STING; IC50= 0.3794 μM in a competition binding assay).1It activates STING in STING-expressing, but not STING knockout, THP-1 cells (EC50s = 0.287 and >100 μM, respectively, in a reporter assay). It induces phosphorylation of STING at the serine in position 366, as well as phosphorylation of TBK1 and IFN regulatory factor 3 (IRF3), indicating activation of the STING-TBK1-IRF3 signaling pathway. CAY10748 increases the secretion of IFN-β and the levels of chemokine (C-X-C motif) ligand 10 (CXCL10), and IL-6 in peripheral blood mononuclear cells (PBMCs) when used at a concentration of 10 μM. It also reduces tumor growth in a CT26 murine colon cancer model when administered at a dose of 0.15, but not 1.5, mg/kg. 1.Xi, Q., Wang, M., Jia, W., et al.Design, synthesis, and biological evaluation of amidobenzimidazole derivatives as stimulator of interferon genes (STING) receptor agonistsJ. Med. Chem.63(1)260-282(2019)

S-Geranylgeranyl-L-glutathione是孤儿G蛋白偶联受体（GPCR）P2RY8的配体。该化合物在100 nM浓度下，选择性地诱导P2RY8而非鞘氨醇-1-磷酸受体2（S1P2）、GPR55、半胱氨酸白三烯受体1（CysLT1 receptor）以及CysLT2 receptor的内吞作用。在10 nM浓度下，S-Geranylgeranyl-L-glutathione抑制了表达P2RY8的WEHI-231 B细胞淋巴瘤细胞和分离的人扁桃体生发中心B细胞由趋化因子（C-X-C motif）配体12（CXCL12）诱导的迁移。

STING激动剂D61（D61）是干扰素基因刺激剂(STING)的激动剂。它在基于细胞的分析中诱导IFN3诱导的分泌性碱性磷酸酶(SEAP)报告基因和IFN-β诱导的报告基因的表达（EC50分别为52.9和116 nM）。D61（4, 6, 和8 µM）增加了编码IFN-β和化学因子（C-X-C基序）配体10（CXCL10）的mRNA的表达以及TANK结合激酶1（TBK1）、IRF3和STING在THP-1单核细胞中的磷酸化。在体内，D61（每隔一天0.25 mg/kg）在CT26小鼠结肠癌模型中减少肿瘤体积，而不影响体重。

EP4 receptor antagonist 7 (Compound 14) 是一种针对前列腺素 E2 (PGE2) 的 EP4 受体亚型的拮抗剂，其IC50值为1.1 nM。在HEK293细胞中，它抑制PGE2诱导的β-阻滞蛋白的募集，IC50为0.9 nM。在RAW 264.7巨噬细胞中，EP4 receptor antagonist 7 能降低PGE2诱导的IL-4、Mrc1、Chil3、Cxcl1、Trem2和Arg1等mRNA的表达。在CT26小鼠结肠癌模型中，该化合物与抗PD-1抗体联合使用可抑制肿瘤生长并增加CD8+ T细胞对肿瘤的浸润。