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作为mRNA上的m5C的读者,SRSF2起着意想不到的作用,将表体转录组与癌症联系起来

Hai-Li Ma¹, Martin Bizet¹, Christelle Soares Da Costa¹

¹Laboratory of Cancer Epigenetics, Faculty of Medicine, ULB-Cancer Research Center (U-CRC), Université libre de Bruxelles (ULB), Institut Jules Bordet, Brussels 1070, Belgium.

|December 8, 2023

概括

科学家们发现,RNA修饰的5-甲基细胞素 (m5C) 与氨酸/氨酸丰富的剪接因子2 (SRSF2) 相互作用. 由SRSF2受损的m5C结合与白血病的发展有关.

科学领域:

分子生物学分子生物学
癌症研究癌症研究
史诗转录组学史诗转录组学

背景情况:

5甲基氨酸 (m⁵C) 是一种常见的mRNA修饰,在基因处理和癌症中没有明确的作用.
富含氨酸/氨酸的剪接因子2 (SRSF2) 涉及到各种细胞功能.

研究的目的:

调查m5C修饰在RNA处理中的作用及其与癌症的联系.
确定SRSF2作为mC的读者,并探索其突变对白血病发生的影响.

主要方法:

结构分析以确定在SRSF2.5中的C识别残留物.
研究NSUN2对mRNAm5C水平和SRSF2结合的影响.
分析野生型和突变的SRSF2 (SRSF2^P95H) 与白血病细胞中的m⁵C标记转录的结合.

主要成果:

鉴定出SRSF2是一种m⁵C阅读器,绑定站点在转录上与m⁵C共定.
NSUN2 knockdown 降低了 mRNA m5C,降低了 SRSF2 的结合,并改变了 RNA 拼接.
该SRSF2^P95H突变损害了m⁵C结合,特别是在白血病相关的转录.
在白血病患者中,低NSUN2表达和SRSF2^P95H与糟糕的结果相关.

结论:

在表体转录学 (m⁵C) 和瘤发生 (SRSF2) 之间建立了一个未被认可的机械联系.
由SRSF2受损的m5C结合是白血病发生的潜在贡献者.
5C修饰和SRSF2功能之间的相互作用为白血病发展提供了新的见解.

关键词:

在NSUN2中,NSUN2是NSUN2.通过RNA甲基化.基因组RNA的修饰是RNA的修饰.通过RNA拼接进行RNA拼接.在 SRSF2 基金中,SRSF2 (((P95H)) 是一个特殊的基金.癌症癌症癌症癌症癌症标志性转录组学标志性转录组学这种白血病是白血病.m(5)C5)C5)C5)C5)C5)C5)C5)C5)C5)C5)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)C)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)D)

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