剖析METTL3对前列腺癌替代拼接的影响
Lin Wang1,2, Ling Shi2, Yonghao Liang2
1Metabolic Disease Research Center, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, China.
Frontiers in oncology
|September 7, 2023
概括
在前列腺癌 (PCa) 中,METTL3通过影响外子跳转和内子保留来调节替代拼接 (AS). 由N6-甲基氨酸 (m6A) 影响的METTL3-依赖性AS事件突出显示MKNK2AS事件作为潜在的PCa生物标志物.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 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:
- 已知METTL3在癌症中的作用,但其在前列腺癌 (PCa) 异形切换中通过替代拼接 (AS) 的功能仍未得到充分研究.
- 前列腺癌表现出显著的异质性,对雄激素敏感和耐药的亚型可能显示出不同的分子机制.
研究的目的:
- 调查METTL3在调节前列腺癌 (PCa) 的替代拼接 (AS) 中的作用.
- 探索METTL3枯竭对不同PCa亚型中AS事件的影响.
- 为了确定与PCa.中METTL3-调节的AS相关的潜在预后生物标志物.
主要方法:
- 使用标准RNA测序和长读直接RNA测序 (牛津纳米孔).
- 在两个不同的PCa细胞系中分析了全基因组METTL3调节的替代拼接事件.
- 研究了METTL3调节的AS对N6-甲基氨酸 (m6A) 和拼接因子的依赖性.
主要成果:
- 在抗雄激素敏感与抗性PCa细胞系中,METTL3枯竭诱导了差异性AS事件 (外因子跳转,内因子保留),表明AS异质性.
- 受到METTL3监管的AS取决于m6A修饰和特定的拼接因子.
- 确定了MKNK2等基因的细胞类型特定的AS签名,这对PCa瘤发生至关重要.
- 在PCa患者中验证了MKNK2AS事件的临床相关性,这表明m6A介导的调节机制涉及SRSF1.
结论:
- METTL3在调节PCa相关的替代拼接程序方面发挥着重要作用.
- 这些发现扩大了对METTL3在瘤发生中的作用的理解.
- MKNK2的替代拼接事件代表了前列腺癌的一个有前途的新型预后生物标志物.
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