Differential Inhibition of APOBEC3 DNA‐Mutator Isozymes by Fluoro‐ and Non‐Fluoro‐Substituted 2′‐Deoxyzebularine Embedded in Single‐Stranded DNA
作者:Maksim V. Kvach、Fareeda M. Barzak、Stefan Harjes、Henry A. M. Schares、Harikrishnan M. Kurup、Katherine F. Jones、Lorraine Sutton、John Donahue、Richard T. D'Aquila、Geoffrey B. Jameson、Daniel A. Harki、Kurt L. Krause、Elena Harjes、Vyacheslav V. Filichev
DOI:10.1002/cbic.201900505
日期:2020.4
preventing the emergence of drug resistance. Here, we have synthesised 2'-deoxynucleoside forms of several known inhibitors of cytidine deaminase (CDA), incorporated them into oligodeoxynucleotides (oligos) in place of 2'-deoxycytidine in the preferred substrates of APOBEC3A, APOBEC3B, and APOBEC3G, and evaluated their inhibitory potential against these enzymes. An oligo containing a 5-fluoro-2'-deoxyzebularine
APOBEC3 (APOBEC3A-H) 酶家族是人类先天免疫系统的一部分,它通过胞嘧啶脱氨基作用产生尿嘧啶残基来扰乱致病性单链 (ss) DNA,从而限制病原体。然而,APOBEC3 介导的病毒和癌症 DNA 突变促进了其进化,从而促进了疾病进展和耐药性的发展。因此,APOBEC3抑制提供了一种新的策略来补充现有的抗病毒和抗癌疗法,使这些疗法在更长的时间内有效,从而防止耐药性的出现。在这里,我们合成了几种已知的胞苷脱氨酶 (CDA) 抑制剂的 2'-脱氧核苷形式,将它们掺入寡脱氧核苷酸(oligos)中代替 APOBEC3A、APOBEC3B 首选底物中的 2'-脱氧胞苷,和 APOBEC3G,并评估了它们对这些酶的抑制潜力。含有 5-fluoro-2'-deoxyzebularine (5FdZ) 基序的 oligo 对 APOBEC3B 的抑制常数比类似的 2'-deoxyzebularine(含