PAR-dCLIP:通过结合分离步骤,可以检测与5'末端结合的RNA结合蛋白标转录
Samantha Lisy1, Katherine Rothamel2, Yelena Perevalova-Pinzul1
1Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, TN, United States.
Methods in enzymology
|October 10, 2024
概括
我们介绍了可光激活的核糖核酸增强交叉链接和免疫沉降与切断 (PAR-dCLIP),一种研究与5'封闭RNA转录相互作用的RNA结合蛋白 (RBPs) 的方法. 这种技术通过包括分离步骤来增强RNA测序和RBP分析.
科学领域:
- 分子生物学分子生物学
- 基因组学就是基因组学.
- 生物化学 生物化学
背景情况:
- RNA结合蛋白 (RBPs) 在转录后调节基因表达.
- 可光激活的核糖核酸增强交联和免疫沉 (PAR-CLIP) 是一种识别RBP的RNA标的方法.
- 传统的 PAR-CLIP 无法有效地分析与RNA上的 5'-终端 7-甲基瓜诺辛 (m7G) 盖结合的 RBP.
研究的目的:
- 开发一个修改后的PAR-CLIP协议,包括5'-capedRNA转录.
- 为了能够研究与RNA的5'-终端结合的RBP,包括结合蛋白.
- 改进RBP-RNA相互作用的综合分析.
主要方法:
- 在标准的PAR-CLIP协议中引入一个脱皮步骤,创建PAR-dCLIP.
- 使用4-氨酸用于RBP的光交叉链接和随后的免疫沉.
- 关联RNA转录的高通量测序 (HTS),包括m7G封顶RNAs.
主要成果:
- PAR-dCLIP成功地从m7G覆盖的转录生成了测序基质.
- 该方法允许识别和测序以前无法通过PAR-CLIP获得的RNA种群.
- 证明了捕获由帽结合蛋白结合的转录的能力.
结论:
- PAR-dCLIP 扩大了 PAR-CLIP 的范围,包括对翻译调节至关重要的 5'-caped RNA.
- 这种修改后的协议确保了对RBP-bound转录的更完整的识别.
- 建议在所有RBP研究中使用PAR-dCLIP,特别是在研究转化控制的研究中.
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