在清细胞细胞癌中,SMARCA4/BRG1缺陷诱导了可向的依赖氧化酸化
Ru Fang1, Xiaotong Wang1, Ruina Wu2
1Department of Pathology, Nanjing Jinling Hospital, Nanjing University School of Medicine, 305 Zhongshan East Road, Nanjing, 210002, China.
Carcinogenesis
|January 24, 2025
概括
清细胞细胞癌 (ccRCC) 中SMARCA4基因失活导致细胞增殖和依赖氧化酸化 (OXPHOS) 的增加. 用IACS-010759针对OXPHOS显示出治疗SMARCA4突变 ccRCC的希望.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 一个瘤抑制基因和SWI/SNF复合体组件的SMARCA4经常在癌症中被禁用,例如清细胞细胞癌 (ccRCC).
- 在ccRCC病变发生过程中,SMARCA4的特定作用及其治疗影响仍未得到充分研究.
研究的目的:
- 研究SMARCA4在ccRCC开发中的功能性作用.
- 确定与ccRCC中SMARCA4缺陷相关的治疗漏洞.
主要方法:
- 功能性测试用于评估在SMARCA4抑制后的细胞增殖.
- 基因表达分析以确定改变的途径.
- 组合RNA测序 (RNA-Seq) 和ATAC-Seq用于研究染色质可访问性和基因调节.
- 使用异种移植模型进行体内研究,以评估药物敏感性.
主要成果:
- 缺少SMARCA4与预后不佳和ccRCC细胞增多相关.
- 缺少SMARCA4的细胞表现出高调的氧化酸化 (OXPHOS) 和改变的染色质可访问性.
- 由于能源需求增加,SMARCA4突变的ccRCC细胞和瘤对IACS-010759对OXPHOS抑制的敏感性增加.
结论:
- 在ccRCC中,SMARCA4的失活促进了OXPHOS的依赖.
- 抑制OXPHOS代表了对SMARCA4突变ccRCC的潜在向治疗.
- 向能量代谢为具有SMARCA4改变的ccRCC提供了一种新的治疗策略.
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