遗传变异重塑了m6A表表写体,并在结直肠癌中驱动了转写体重编程
Seung Hun Han1, Seongmin Jang1, Yeongwon Kim1
1Department of Life Science, College of Natural Sciences, Hanyang University, Seoul, 04763, Republic of Korea.
Scientific reports
|November 11, 2025
概括
与癌症相关的遗传变异可能通过改变N6-甲基氨酸 (m6A) RNA甲基化来改变基因表达. 这项研究揭示了SNP,m6A修饰和结直肠癌中改变基因表达之间的联系.
科学领域:
- 基因组学就是基因组学.
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 癌症生物学 癌症生物学
背景情况:
- 全基因组关联研究 (GWAS) 识别了与疾病相关的单核酸多态 (SNP),但它们的功能机制通常是未知的.
- 虽然研究了SNP的转录效应,但它们在转录后的调节作用,特别是在RNA甲基化中,理解程度较低.
研究的目的:
- 通过改变N6-甲基氨酸 (m6A) RNA甲基化来研究与癌症相关的SNP是否会影响基因表达.
- 探索m6ARNA甲基化在调解癌症遗传变异的转录后效应中的作用.
主要方法:
- 在九种癌症类型中收集了GWAS识别的SNP.
- 集成的SNP数据与匹配的瘤和正常的m6ARNA免疫沉测序 (m6A-seq) 和RNA测序 (RNA-seq) 数据集.
- 鉴定了差异甲基化m6A位点并评估了SNP丰富;进行了整合性分析和实验验证.
主要成果:
- 与癌症相关的SNP在结肠癌中的高甲基化m6A区域显著丰富.
- 在m6A-修饰区域的SNP与改变的基因表达和RNA剪接相关.
- 实验验证证证实了与m6A修饰相关的改变基因表达,与患者数据一致.
结论:
- 在结直肠癌中,基因变异和RNA甲基化驱动的转录组调节之间存在一种新的机制联系.
- m6 ARNA甲基化调解遗传变异的转录后影响.
- 表皮转录组代表了瘤控制的潜在轴.
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