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使用工程RNA脱氨酶进行RNA分子记录
Yizhu Lin1, Samentha Kwok1, Abigail E Hein2
1Department of Cell and Tissue Biology, University of California, San Francisco, San Francisco, CA, USA.
Nature methods
|October 19, 2023
概括
研究人员设计了一种新的RNA腺基编辑器 (rABE) 用于RNA分子记录. 这种新工具REMORA准确地绘制了单分子分辨率的RNA-蛋白相互作用,克服了以前的局限性.
科学领域:
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
- 生物技术是生物技术.
背景情况:
- RNA分子记录器对于研究RNA动态是必不可少的,但由于RNA结构和序列依赖性而受到限制.
- 像TRIBE,DART和STAMP这样的现有工具具有固有的局限性,影响其效率和适用性.
研究的目的:
- 开发一个改进的RNA分子记录平台,以增强活动,减少偏差和更低的背景.
- 设计一种新的RNA腺基编辑器 (rABE),用于精确的RNA基编辑和分子记录.
- 将开发的平台应用于单细胞中RNA-蛋白相互作用的高分辨率映射.
主要方法:
- 定向进化平台用于设计一种新的RNA腺基编辑器 (rABE).
- 开发REMORA (在腺中编码RNA的分子记录) 使用工程rABE.
- 将rABE与APOBEC1 (C-to-U除氨酶) 和长读RNA测序相结合,以测量RNA结合蛋白相互作用.
主要成果:
- 工程rABE表现出高活性,低偏差和低背景,改善RNA分子记录能力.
- 雷莫拉成功测量了两个RNA结合蛋白 (PUM1和PUM2) 在单一信使RNA上的结合.
- 证明了PUM1和PUM2在结合位点上的竞争,并确定了转录异形特异性相互作用.
结论:
- 工程设计的rABE和REMORA平台克服了以前的RNA分子记录器的局限性.
- 雷莫拉可以对单分子,细胞类型特定的RNA-蛋白相互作用进行识别.
- 这项技术为RNA调节提供了新的见解,包括异构体特定的结合事件.
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