Synthesis of urea analogues bearing N-alkyl-N'-(thiophen-2-yl) scaffold and evaluation of their innate immune response to toll-like receptors
作者:Zhipeng Chen、Xiaohong Cen、Junjie Yang、Zhiman Lin、Meihuan Liu、Kui Cheng
DOI:10.1016/j.ejmech.2019.02.067
日期:2019.5
Previous high throughput virtual screening of 10 million-compound and following cell based validation led to the discovery of a novel, nonlipopeptide-like chemotype ZINC 6662436, as toll-like receptor 2 (TLR2) agonists. In this report, compounds belonging to four areas of structural modification of ZINC6662436 were evaluated for biological activity using human HEK-Blue TLR2 reporter cells, and human THP-1 monocytic cells, yield SMU-C13 as an optimized, direct and high potent (EC50 = 160 nM) agonist of human TLR2. Moreover, preliminary mechanism studies indicated that SMU-C13 through activates TLR1 and TLR2 then stimulates the NF-kappa B activation to trigger the downstream cytokines, such as TNF-alpha and secreted alkaline phosphatase (SEAP). (C) 2019 Elsevier Masson SAS. All rights reserved.