Design, synthesis, and biological evaluation studies of novel carboxylesterase 2 inhibitors for the treatment of irinotecan-induced delayed diarrhea
作者:Zhongcheng Yang、Zhijun Cao、Wenxin Wang、Ya Chen、Wanqiu Huang、Shixuan Jiao、Siliang Chen、Lianru Chen、Yuxia Liu、Jianming Mao、Luyong Zhang、Zheng Li
DOI:10.1016/j.bioorg.2023.106625
日期:2023.9
irinotecan. Nonetheless, there is a scarcity of selective and effective inhibitors that are suitable for irinotecan-induced delayed diarrhea. Following screening of the in-house library, the lead compound 01 was identified with potent inhibition on hCES2A, which was further optimized to obtain LK-44 with potent inhibitory activity (IC50 = 5.02 ± 0.67 μM) and high selectivity on hCES2A. Molecular docking
人羧酸酯酶2(hCES2A)是分布在小肠和结肠中最重要的丝氨酸水解酶之一,在多种前药和酯的水解中起着至关重要的作用。越来越多的证据表明,抑制hCES2A可以有效减轻一些hCES2A底物药物引起的副作用,包括抗癌药物伊立替康引起的迟发性腹泻。尽管如此,仍然缺乏适用于伊立替康引起的迟发性腹泻的选择性且有效的抑制剂。经过内部文库筛选,确定先导化合物01对hCES2A具有强效抑制作用,进一步优化得到对hCES2A具有强效抑制活性(IC 50 = 5.02 ± 0.67 μM)和高选择性的LK-44 。分子对接和分子动力学模拟表明LK-44可以与hCES2A活性空腔周围的氨基酸形成稳定的氢键。抑制动力学研究结果表明, LK-44以混合抑制方式抑制hCES2A介导的FD水解, K i值为5.28 μM。值得注意的是,根据 MTT 测定, LK-44对 HepG2 细胞表现出低毒性。重要的是,体内研究表