全基因组查确定了BAP1作为一种合成致死性标,具有CDK4/6抑制剂
Mei Feng1, Hong Liu2,3, Lu Zheng4
1International Cancer Institute and Translational Cancer Research Center, Peking University First Hospital, Beijing, China.
Science advances
|January 16, 2026
概括
癌细胞通过涉及BAP1.1的表观遗传途径对CDK4/6抑制剂产生抗性. 向BAP1可以提高肝胆癌的药物疗效,为抗适应性耐药性提供新的策略.
科学领域:
- 在瘤学瘤学.
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 癌症生物学 癌症生物学
背景情况:
- 癌细胞适应细胞循环抑制剂的非遗传机制尚未完全理解.
- 循环素依赖性激酶4/6 (CDK4/6) 抑制剂用于癌症治疗,但可以产生耐药性.
- 了解适应性耐药性对于改善治疗结果至关重要.
研究的目的:
- 为了确定表观遗传途径驱动适应性耐药性的CDK4/6抑制剂在肝胆癌.
- 阐明BAP1在调解这种抵抗机制中的作用.
- 探索针对BAP1的治疗策略,以克服耐药性.
主要方法:
- 综合性方法将全基因组的CRISPR查与转录,表观遗传和蛋白质基因分析结合起来.
- 分析BAP1依赖的染色体重塑及其对基因表达的影响.
- 在临床前模型 (老鼠模型和患者衍生器官) 中评估BAP1抑制.
主要成果:
- 持续的CDK4/6抑制会诱导BAP1依赖的染色体重塑,导致类似干细胞的表观遗传状态.
- BAP1通过去除TCF4促进体中的H2AK119ub来激活WNT和EMT信号,从而增强癌细胞的可塑性和生存.
- 在临床前模型中,抑制BAP1显著提高了abemaciclib的疗效.
结论:
- BAP1是瘤可塑性和通过表观遗传重编程的适应性抵抗的关键调节者.
- 针对BAP1是一个有希望的策略,可以克服对CDK4/6抑制剂的适应性耐药性.
- 这种方法在治疗静止,耐药癌细胞方面可能是有效的.
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