总平面RNA的基于RNaseH的 рибо扩充改善了更长和非多基化转录的检测
Pallob Barai1, Shishir Biswas1, Prince Verma1
1Department of Biology, University of Kentucky, Lexington KY 40506.
bioRxiv : the preprint server for biology
|July 29, 2024
概括
一种新的,具有成本效益的带状分裂方法显著降低了来自Schmidtea mediterranea的RNA测序库中的核糖体RNA (rRNA) 污染. 这提高了信使RNAs (mRNAs) 的检测,包括新的转录和可转移元素 (TE).
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:
- 在总RNA分离物中高丰度的核糖体RNA (rRNA) 挑战了信使RNA (mRNA) 的检测和表达分析.
- 标准的多基化 (polyA) mRNA丰富和商业的带丝缩减套件对于具有异异rRNA序列的物种通常是无效的,例如*Schmidtea mediterranea* (S.med).
- 这种低效率导致RNA测序 (RNA-seq) 库中的显著rRNA污染,阻碍了敏感和可重复的转录组研究.
研究的目的:
- 开发一种定制,优化和经济的肋骨剥离策略,用于从S.med.生成高质量的RNA-seq库.
- 改进各种mRNA转录的检测,包括非多基和长转录.
- 识别新的转录,包括可转移元素 (TE),并为未来的转录组分析提供资源.
主要方法:
- 开发和实施一个针对S.med rRNA序列量身定制的定制肋骨剥离协议.
- 使用优化带状缩策略生成RNA-seq库.
- 生物信息分析用于评估rRNA污染水平,识别新型转录,并创建注释文件和管道.
主要成果:
- 在RNA-seq库中,自定义的带状腺减退策略成功地将rRNA污染率降低到不到1%.
- 改善了缺乏多A尾部 (例如核心基因组) 的转录和长转录 (例如微管子运动蛋白) 的检测.
- 识别了许多新的转录,包括潜在表达的可移植元素 (TE),这些元素不在当前的S.med基因注释中.
结论:
- 开发的定制带丝缩减方法提供了一个强大的和具有成本效益的解决方案,用于从S.med.生成全面的RNA-seq库.
- 这种方法增强了转录基因分析,使得以前未被注释的基因和调控元素 (如TEs) 的发现成为可能.
- 提供的注释资源和生物信息管道将促进未来对基因表达,TE调节和平面动物和相关物种的功能研究的研究.
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