新型 WRN 抑制剂的高通量评估
Haiyan Xu1, Rachel L Palte2, Meredith M Rickard2
1Dept of Quantitative Biosciences, Merck Research Laboratories Discovery, Preclinical and Translational Medicine, Merck & Co. Inc., Rahway, NJ, USA.
SLAS discovery : advancing life sciences R & D
|August 27, 2025
概括
针对维纳综合征化酶 (WRN) 为治疗微卫星不稳定性 (MSI-H) 癌症提供了一种新的策略. 通过利用它们的DNA修复漏洞,抑制WRN可以选择性地杀死MSI-H瘤细胞,从而为新的癌症治疗铺平道路.
科学领域:
- 癌症学
- 分子生物学
- 药物发现
背景情况:
- 基因组稳定性是通过DNA修复机制维持的.
- 维纳综合征酶 (WRN) 对于DNA双链断裂 (DSB) 修复至关重要,并且是微卫星不稳定性高 (MSI-H) 癌症的治疗点.
- MSI-H瘤表现出DNA不匹配修复缺陷,并依赖于WRN生存.
研究的目的:
- 确定和开发用于MSI-H癌症治疗的新型WRN抑制剂.
- 评估WRN抑制在MSI- H与微卫星稳定 (MSS) 瘤细胞中的有效性和选择性.
- 利用基于知识的药物发现方法,结合计算建模和实验分析.
主要方法:
- 使用了体外生化测试 (ATPase,helicase) 和基于细胞的测试 (活力,目标参与).
- 使用CRISPR介导的WRN淘汰来确认MSI-H细胞的致命性.
- 应用高含量成像用于DNADSB生物标志物 (pH2AX) 检测和细胞热转移测定目标参与.
- 综合计算建模与选工作 (表型,ALIS,ADP全球HTS,DEL).
主要成果:
- 在MSI-H细胞中,CRISPR敲除 WRN是致命的,但在MSS细胞中没有,这取决于酶活性.
- 发现了一系列针对MSI-H瘤细胞的新型螺旋环WRN抑制剂.
- 开发的抑制剂表现出强度和选择性,激活WRN酶.
结论:
- WRN是MSI-H癌症的有效治疗标.
- 针对性抑制WRN为选择性癌症治疗提供了一个有前途的策略.
- 跨学科的方法对于推进新型治疗剂至关重要.
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