在清细胞细胞癌中,VHL控制m6A修饰和PIK3R3mRNA稳定性
Hyemin Lee1, Li Zhuang1, Boyi Gan1,2
1Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.
The Journal of clinical investigation
|April 15, 2024
概括
·希佩尔-林道 (VHL) 基因调节了清细胞细胞癌 (ccRCC) 中的N6-甲基氨酸 (m6A) 修饰. 这一发现揭示了VHL缺乏ccRCC的新治疗点.
科学领域:
- 分子生物学分子生物学
- 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.
背景情况:
- N6-甲基氨酸 (m6A) 是癌症进展中的关键表观遗传调节剂.
- 清细胞细胞癌 (ccRCC) 经常与希佩尔-林道 (VHL) 基因损失有关.
- 确定了VHL蛋白在E3无素酶复合体和缺氧诱导因子 (HIF) 调节中的作用.
研究的目的:
- 在ccRCC中调查VHL的非正典功能.
- 阐明VHL在m6A修饰中的作用.
- 为了确定VHL缺乏的ccRCC的新型治疗点.
主要方法:
- 研究了VHL与m6A编写蛋白 (METTL3/METTL14) 的相互作用.
- 分析了VHL对PIK3R3mRNA稳定性的影响.
- 评估了PIK3R3对p85无化和PI3K/AKT信号传递的影响.
- 使用了ccRCC的细胞和小鼠模型.
主要成果:
- 通过编排METTL3和METTL14组装,VHL控制了m6A的修改.
- VHL稳定了PIK3R3mRNA,这对ccRCC生长至关重要.
- 皮克3R3促进了p85的无处不在,抑制了PI3K/AKT信号传递和ccRCC的进展.
- 缺少VHL导致PI3K/AKT信号的增加和ccRCC的生长.
结论:
- 在调节m6A修饰方面,VHL具有超出其规范作用的新功能.
- 由VHL介导的m6A调节会影响PI3K/AKT信号传递和ccRCC生长.
- 针对VHL-m6A-PI3K/AKT轴为VHL缺陷的ccRCC提供了潜在的治疗策略.
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