Part I: Design, synthesis and biological evaluation of novel pyrazole-benzimidazole conjugates as checkpoint kinase 2 (Chk2) inhibitors with studying their activities alone and in combination with genotoxic drugs
作者:Shadia A. Galal、Ahmed S. Abdelsamie、Samia A. Shouman、Yasmin M. Attia、Hamed I. Ali、Ashraf Tabll、Reem El-Shenawy、Yasmine S. El Abd、Mamdouh M. Ali、Abeer E. Mahmoud、Abeer H. Abdel-Halim、Amal A. Fyiad、Adel S. Girgis、Hoda I. El-Diwani
DOI:10.1016/j.ejmech.2017.03.090
日期:2017.7
Activated checkpoint kinase 2 (Chk2) is a tumor suppressor as one of the main enzymes that affect the cell cycle. 2-Biarylbenzimidazoles are potent selective class of Chk2 inhibitors; the structure-based design was applied to synthesize a new series of this class with replacing the lateral aryl group by substituted pyrazoles. Ten pyrazole-benzimidazole conjugates from the best fifty candidates according
激活的检查点激酶2(Chk2)是一种肿瘤抑制因子,是影响细胞周期的主要酶之一。2-联芳基苯并咪唑类是有效的Chk2抑制剂类;基于结构的设计被用于合成此类新系列,用取代的吡唑取代侧基。在这项研究中,根据对接程序从最佳的五十种候选物中选择了十种吡唑-苯并咪唑共轭物。评价了缀合物5-14作为检查点激酶抑制剂以及单独和与遗传毒性药物联合作为抗肿瘤药的活性。通过流式细胞术分析来分析化合物7和12对细胞周期相的影响。在由MNU诱导的荷乳癌动物中评估了化合物7和12作为单药以及与阿霉素联用的抗肿瘤活性。结果表明化合物5-14以高效力(IC50 52.8 nM-5.5 nM)抑制Chk2活性。大部分缀合物针对MCF-7细胞系均显着增强了顺铂和阿霉素的细胞毒性。化合物7和12及其与阿霉素的组合诱导了MCF-7细胞的细胞周期停滞。此外,化合物7在动物中作为单一药剂比与阿霉素或单独使用阿霉素的组合具有更高的抗肿