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Updated: Jun 13, 2025

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转录组范围内的RNA可访问性映射揭示了结构化的RNA元素和在压力下普遍的形状重排
bioRxiv : the preprint server for biology
|June 12, 2025
概括
研究人员开发了DMS-TRAM-seq以在人类转录组中映射RNA结构. 这种方法揭示了新的RNA结构和动态变化,进步了我们对基因调节的理解.
科学领域:
- 分子生物学分子生物学
- 基因组学就是基因组学.
- 生物信息学是一种生物信息学.
背景情况:
- RNA结构对基因调节至关重要,影响RNA稳定性,翻译和蛋白质相互作用.
- 目前用于在转录组中映射RNA结构的方法在规模和覆盖范围上是有限的.
研究的目的:
- 介绍DMS-TRAM-seq,这是一个用于大规模RNA结构探测的新方法.
- 为人类转录组生成全面的RNA二级结构预测.
- 调查RNA结构可塑性对细胞条件的反应及其对基因调节的影响.
主要方法:
- 开发并应用DMS-TRAM-seq (二甲基硫酸盐-转录组全方位RNA可访问性测绘通过测序) 用于转录组全方位RNA结构分析.
- 产生了超过9,000个人类成绩单的二级结构预测.
- 整合结构数据与RNA结合蛋白 (RBP) 基因信息和核糖体概况.
主要成果:
- 成功地为几乎整个人类转录组绘制了RNA结构,识别了700多种新型结构元素.
- 揭示了响应细胞干扰的动态RNA结构重组.
- 在氧化应激过程中发现了改变的RNA-RBP相互作用,并证明了翻译抑制有利于热力学稳定的RNA构造.
结论:
- DMS-TRAM-seq为询问RNA结构和其可塑性提供了前所未有的规模和覆盖范围.
- 这些发现为了解转录后基因调节的结构基础开辟了新的途径.
- 这项技术有助于发现由RNA结构控制的新型调节元素和机制.
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