通过cuproptosis针对TCA循环赋予ARID1A缺陷肝细胞癌的合成致死性
Tao Xing1, Li Li2, Yiran Chen3
1Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing 100142, China.
Cell reports. Medicine
|November 8, 2023
概括
缺乏ARID1A基因的肝细胞癌 (HCC) 细胞依赖三碳酸 (TCA) 循环生存. 针对TCA循环的铜处理对治疗ARID1A缺乏的HCC.有希望.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 代谢途径 代谢途径
背景情况:
- ARID1A 是肝细胞癌 (HCC) 中经常发生突变的瘤抑制基因.
- 了解ARID1A缺乏HCC的合成致死性对于开发向疗法至关重要.
研究的目的:
- 为肝细胞癌 (HCC) ARID1A 缺乏症患者确定治疗策略.
- 为了研究ARID1A缺乏的HCC细胞的代谢脆弱性.
主要方法:
- 在ARID1A缺乏的HCC细胞中进行了CRISPR-Cas9合成致死性屏幕.
- 分析了细胞葡萄糖代谢和基因表达的变化.
- 在体外和体内对铜处理的评估灵敏度.
主要成果:
- 缺乏ARID1A的HCC细胞依赖三碳酸 (TCA) 循环基因生存.
- 失去ARID1A抑制了pyruvate kinase M (PKM) 的表达,将新陈代谢转向TCA循环依赖.
- 缺乏ARID1A的HCC细胞和瘤对铜处理具有很高的敏感性.
结论:
- 缺少ARID1A会产生合成致命的脆弱性,并导致线粒体呼吸功能受损.
- 铜处理是一种潜在的治疗策略,可以选择性地向ARID1A缺乏的HCC.
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