Inhibition of Tyrosyl-DNA Phosphodiesterase 1 by Lipophilic Pyrimidine Nucleosides
作者:Alexandra L. Zakharenko、Mikhail S. Drenichev、Nadezhda S. Dyrkheeva、Georgy A. Ivanov、Vladimir E. Oslovsky、Ekaterina S. Ilina、Irina A. Chernyshova、Olga I. Lavrik、Sergey N. Mikhailov
DOI:10.3390/molecules25163694
日期:——
Inhibition of DNA repair enzymes tyrosyl-DNA phosphodiesterase 1 and poly(ADP-ribose)polymerases 1 and 2 in the presence of pyrimidine nucleoside derivatives was studied here. New effective Tdp1 inhibitors were found in a series of nucleoside derivatives possessing 2′,3′,5′-tri-O-benzoyl-d-ribofuranose and 5-substituted uracil moieties and have half-maximal inhibitory concentrations (IC50) in the lower
此处研究了在嘧啶核苷衍生物存在下对 DNA 修复酶酪氨酰-DNA 磷酸二酯酶 1 和聚(ADP-核糖)聚合酶 1 和 2 的抑制作用。在一系列具有 2',3',5'-三-O-苯甲酰基-d-呋喃核糖和 5-取代尿嘧啶部分的核苷衍生物中发现了新的有效 Tdp1 抑制剂,并且在较低的区域具有半数最大抑制浓度 (IC50)。微摩尔和亚微摩尔范围。2',3',5'-Tri-O-benzoyl-5-iodouridine 对 Tdp1 的抑制作用最强 (IC50 = 0.6 μM)。苯甲酸残基数量的减少导致抑制活性显着下降,而缺乏亲脂基团的嘧啶核苷(尿苷、5-氟尿苷、5-氯尿苷、5-溴尿苷、5-碘尿苷和核苷)不会引起显着抑制 Tdp1 (IC50 > 50 μM)。在所研究的化合物中未发现 PARP1/2 抑制剂(在 1 mM 物质存在下的残留活性为 50-100%)。几种O-苯甲酰化尿苷和胞苷衍生物