相关实验视频
Updated: Jun 16, 2025

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Identification of Circular RNAs using RNA Sequencing
Published on: November 14, 2019
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超强增强剂介导的circRNAs具有较高的拼接循环化多样性和转录活性
Shaodong Huang1,2, Yulong Han3,4, Yiran Liu1,2
1Department of Biomedical Informatics, School of Basic Medical Sciences, Peking University, Beijing 100191, China.
Nucleic acids research
|June 13, 2025
概括
像H3K27ac超级增强剂这样的表观遗传标记调节循环RNA (circRNA) 的多样性和表达. 一个新的签名,CIRSE,识别了用于癌症预后和治疗的瘤抑制性circRNAs.
科学领域:
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 非编码RNA生物学
- 癌症基因组学 癌症基因组学
背景情况:
- 循环RNAs (circRNAs) 是生物过程中的关键调节者,但它们的表观遗传控制尚不清楚.
- 了解表观遗传机制对于破译circRNA功能至关重要.
研究的目的:
- 研究表观遗传修饰,特别是超级增强剂在调节circRNA生物发生中的作用.
- 为了确定癌症中具有预后潜力的circRNAs的表观基因学特征.
主要方法:
- 分析了195个转录组形状.
- 基斯基因修饰分析 (H3K27ac,H3K4me3,H3K36me3,H3K27me3,H3K9me3) 的结果.
- 纳米孔测序和CLIP-Seq用于RNA结合蛋白相互作用.
- 肺腺癌的生存分析.
主要成果:
- H3K27ac标记的超级增强剂增强了circRNA剪接多样性和宿主基因转录.
- 显著的组织蛋白修饰显示出对circRNA表达的多种调节效应.
- 发现了一种泛癌特征,即缩短增强器的CIRSE (circRNA异形减少).
- 在肺腺癌中,CIRSE显示出强大的预后价值.
- 阐明了一种涉及circRNA稳定性和背接的双重调节机制.
- 由CIRSE定义的抑制瘤的circRNAs对于癌症表型至关重要.
结论:
- 表观遗传调节,特别是通过超级增强剂,显著影响circRNA生物发生.
- CIRSE签名提供了预后潜力,并有助于发现抑制瘤的circRNAs.
- 这些发现有助于更好地理解circRNA表观遗传学,并支持精确瘤学应用.
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