抗瘤缺氧增强的尼特罗伊米达衍生物:设计,合成,抗瘤活性,分子对接研究和QSAR研究
Aya M Almatary1,2, Walaa M El Husseiny1, Khalid B Selim1
1Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt.
Drug development research
|November 2, 2023
概括
针对低氧瘤的新型胺酸基药物显示出强大的抗增殖和放射敏感作用. 自由醇组对活性至关重要,化合物21b被确定为一个有前途的循环素依赖激酶2 (CDK2) 抑制剂,可诱导细胞亡和细胞循环停止.
科学领域:
- 药用化学 医学化学
- 在瘤学瘤学.
- 生物化学 生物化学
背景情况:
- 瘤缺氧形成了一个独特的微环境,与正常组织不同,使其成为选择性治疗的目标.
- 生物还原疗法提供了一种选择性向缺氧瘤区域的策略.
- 开发具有放射敏感性特性的新型细胞毒剂对于提高癌症治疗疗效至关重要.
研究的目的:
- 合成和评估基于尼特罗伊米达的新型化合物作为潜在的细胞毒性和放射性敏感剂,用于缺氧瘤.
- 研究这些化合物的结构-活性关系 (SAR),重点关注特定功能组的作用.
- 为了确定所观察到的抗癌活性背后的分子标和机制.
主要方法:
- 合成与氧沙或三环结合的新型胺衍生物.
- 在正常和缺氧条件下对HCT116细胞系进行体外抗增殖试验.
- 放射敏感化试验,分子对接研究,循环素依赖性激酶2 (CDK2) 抑制试验以及细胞循环/细胞亡分析.
- 用于预测建模的定量结构-活动关系 (QSAR) 分析.
主要成果:
- 大多数合成的化合物在正常和缺氧条件下都表现出中度至优异的抗增殖活性.
- 含有自由醇组 (11a,b和21a,b-23a,b) 的化合物表现出最强的抗增殖作用.
- 最活跃的化合物 (11b,21-23b) 显示出显著的辐射敏感能力.
- 分子对接和酶测定确定CDK2作为一个有前途的目标,而21b化合物与罗斯科维丁相比显示出更高的抑制活性.
- 化合物21b诱导了G1和S阶段的细胞亡和细胞循环停止.
- 对于实验和测试集,QSAR模型显示出极好的预测准确性 (r2 = 0.86 和 0.95,分别).
结论:
- 新型的化-氧化/化混合物是有效的抗增殖和放射敏感剂,特别是在低氧条件下.
- 自由醇组的存在对于观察到的生物活性至关重要.
- 化合物21b是一种强大的CDK2抑制剂,具有显著的抗癌潜力,需要进一步研究治疗开发.
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