表观遗传合作性作为癌症治疗中的治疗脆弱性
Yaniv Kazansky1,2, Alex Kentsis1,2,3
1Molecular Pharmacology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, New York.
Cancer research
|December 1, 2023
概括
结核癌 (NC) 显示出对聚合物抑制复合体2 (PRC2) 的基因抑制的依赖. 将EZH2抑制与BET抑制相结合显示出对NC瘤的治疗协同作用.
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:
- 核突瘤 (NC) 是年轻成年人具有不良后果的侵袭性癌症.
- BRD4-NUT融合通过染色质过活化驱动瘤发生,但BET抑制剂的有效性有限.
- NC对聚合物抑制复合体2 (PRC2) 介导的基因抑制具有合成致命的脆弱性.
研究的目的:
- 调查PRC2在NC病变发生中的作用.
- 为了评估向EZH2的治疗潜力,NC中的PRC2的催化子单元EZH2.
- 探索NC的组合表观遗传疗法.
主要方法:
- 在NC患者瘤中评估EZH2表达.
- 测试了EZH2抑制剂tazemetostat对NC细胞的疗效.
- 在体外和体内研究了将tazemetostat与BET抑制剂 (mivebresib) 结合的协同效应.
- 分析了基因表达变化和染色质重塑.
主要成果:
- 在NC瘤中,EZH2的表达很高.
- 塔泽美托斯塔特在NC中表现出强烈的抗瘤活性.
- 联合tazemetostat和mivebresib治疗产生了显著的治疗协同作用.
- 组合疗法通过融合基因表达改造增强了RB1功能的抑制.
结论:
- 在NC中,表现出由基因激活和抑制途径驱动的表观遗传合作性.
- 针对PRC2,特别是EZH2,代表了NC的新治疗策略.
- 结合表观遗传疗法与EZH2和BET抑制剂为NC患者的临床试验提供了有前途的方法.
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