Potent Thiophene Antagonists of Human Complement C3a Receptor with Anti-Inflammatory Activity
作者:Jessica A. Rowley、Robert C. Reid、Eunice K. Y. Poon、Kai-Chen Wu、Junxian Lim、Rink-Jan Lohman、Johan K. Hamidon、Mei-Kwan Yau、Maria A. Halili、Thomas Durek、Abishek Iyer、David P. Fairlie
DOI:10.1021/acs.jmedchem.9b00927
日期:2020.1.23
thiophenes resulted in potent and selective antagonism of human Complement C3a receptor. The compounds are about 100-fold more potent than the most reported antagonist SB290157. A new compound JR14a was among the most potent of the new antagonists in vitro, assessed by (a) inhibition of intracellular calcium release (IC50 10 nM) induced in human monocyte-derived macrophages by 100 nM C3a, (b) inhibition
一系列小分子噻吩的结构活性关系导致人类补体C3a受体的有效和选择性拮抗作用。该化合物的功效比最报道的拮抗剂SB290157强约100倍。一种新的化合物JR14a在体外是最有效的新拮抗剂之一,其评估方法是(a)100 nM C3a抑制人单核细胞衍生的巨噬细胞诱导的细胞内钙释放(IC50 10 nM),(b)抑制β-人LAD2肥大细胞中的己糖胺酶分泌(IC50 8 nM)脱颗粒100 nM C3a,以及(c)对人C3aR的选择性高于C5aR。JR14a在大鼠血浆和大鼠肝微粒体中代谢稳定,在口服抑制大鼠爪发炎,巨噬细胞和肥大细胞活化方面有效,足底内施用C3aR激动剂引起的组织病理学改变。现在可以使用有效的C3aR拮抗剂来研究C3aR受体的活化并抑制C3aR介导的哺乳动物生理和疾病炎症。