设计,合成和结构-活动关系 蛋白激酶CK2抑制剂的蛋白质激酶CK2抑制剂的设计,合成和结构-活动关系研究 含有纯素支架的蛋白质激酶CK2抑制剂的研究
Keiji Nishiwaki1, Shinya Nakamura1, Kenji Yoshioka1
1Department of Pharmaceutical Sciences, Faculty of Pharmacy, Kindai University.
研究人员确定了针对蛋白激酶CK2 (CK2) 的基于纯素的新型抑制剂,这些抑制剂对癌症和COVID-19等疾病至关重要. 化合物12表现出显著的抑制活性,提供了新的治疗开发途径.
科学领域:
- 药用化学 医学化学
- 生物化学 生物化学
- 药物发现 药物发现 药物发现
背景情况:
- 蛋白激酶CK2 (CK2) 在细胞过程中起着至关重要的作用,包括基因表达,蛋白质合成,细胞增殖和细胞亡.
- CK2的失调与癌症,炎和2019年冠状病毒病等各种疾病有关,使其成为一个重要的治疗点.
研究的目的:
- 通过虚拟查和基于结构的药物设计,识别和设计新的CK2α小分子抑制剂.
- 探索基于纯素的化合物作为CK2α抑制剂的结构-活性关系 (SAR).
- 研究新型抑制剂与CK2α的结合方式和相互作用.
主要方法:
- 基于溶剂双极排序的虚拟选以确定候选抑制剂.
- 使用CK2α的晶体结构进行虚拟对接实验 (PDBID: 5B0X).
- 结构-活性关系 (SAR) 研究和实验验证,包括X射线晶体学.
- 相互作用能量分析以了解结合机制.
主要成果:
- 鉴定新型纯素支架作为潜在的CK2α抑制剂.
- 建立强大的抑制的关键结构特征:在2位的4-碳氧基组,在6位的碳胺和在9位的富含电子的基组.
- 化合物11 (4-(6-carbamoyl-8-oxo-9-phenyl-8,9-dihydro-7H-purin-2-yl) 酸) 在对接预测和实验数据之间显示出良好的一致性.
- 化合物12 (4-(6-Carbamoyl-9-(4-(dimethylamino) phenyl)-8-oxo-8,9-dihydro-7H-purin-2-yl) 酸) 作为一种改善的抑制剂,其IC50为4.3μM.
- 观察到一种不寻常的结合模式,在没有特定的水分子的情况下与链区域相互作用.
结论:
- 已识别的基于纯素的化合物是强大的CK2α抑制剂,具有独特的结合方式.
- 这些发现为设计新的CK2α抑制剂提供了基础,对CK2相关疾病具有治疗潜力.
- 这些化合物的进一步开发可能会导致针对CK2抑制的新疗法.
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