一个小分子向突变转化合成改善化疗
Jessica L Wojtaszek1, Nimrat Chatterjee2, Javaria Najeeb1
1Department of Biochemistry, Duke University Medical Center, Durham, NC 27710, USA.
Cell
|June 11, 2019
概括
研究人员开发了一种新的小分子抑制剂JH-RE-06,以向突变转化合成 (TLS). 这一突破通过阻断药物耐药性和减少治疗诱导的突变来提高化疗效果.
科学领域:
- 癌症学
- 分子生物学
- 药物发现
背景情况:
- 药物耐药性和二次恶性瘤限制了化疗的有效性.
- 突变性转化合成 (TLS) 促进化学抵抗和治疗诱导的突变.
- 针对TLS是一种有前途的化学疗法策略,但开发特定的抑制剂具有挑战性.
研究的目的:
- 发现和描述针对突变性TLS的新型小分子抑制剂.
- 在临床前癌症模型中评估抑制剂的疗效.
主要方法:
- 发现JH-RE-06,一个小分子抑制剂的突变性TLS.
- 研究JH-RE-06的作用机制,重点是REV1和POL ζ的相互作用.
- 在实验室中评估JH-RE-06抑制突变性TLS的能力.
- 评估JH-RE-06对细胞系中西斯普拉丁诱导的毒性.
- 在异种移植人类黑色素瘤小鼠模型中测试JH-RE-06与西斯普拉丁的联合疗效.
主要成果:
- JH-RE-06通过阻止转变性POL ζ的招募来破坏转变性TLS.
- 该抑制剂与REV1结合,诱导二分化并阻断REV1- REV7相互作用.
- 在人类和小鼠细胞系中,JH-RE-06抑制了突变性TLS,并增强了西斯诱导的毒性.
- 在小鼠中,JH-RE-06和西斯的联合使用抑制了异种移植黑色素瘤的生长.
结论:
- JH-RE-06是一种具有活体功能的突变性TLS抑制剂.
- 这项研究为开发TLS抑制剂作为新型化疗辅助剂奠定了基础.
- 针对TLS提供了一种有前途的策略来克服化学抗药性并提高癌症治疗结果.
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