在体内RNA交互原子分析显示,3'UTR处理的小RNA向中央调节枢纽
Fang Liu1,2, Ziying Chen1,3,4, Shuo Zhang1,2,5
1Microbial RNA Systems Biology Unit, Key Laboratory of Molecular Virology and Immunology, Shanghai Institute of Immunity and Infection, Chinese Academy of Sciences, Shanghai, 200031, China.
Nature communications
|December 7, 2023
概括
研究人员开发了细胞内RIL-seq (iRIL-seq) 来绘制活细胞中的细菌RNA-RNA相互作用. 这种方法揭示了复杂的调节网络,确定OmpD mRNA是多个小非编码RNA (sRNA) 准的关键枢纽.
科学领域:
- 细菌学 细菌学是一门学科.
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 小型非编码RNAs (sRNAs) 是细菌基因表达的关键调节者.
- sRNA与RNA伴侣 (例如,Hfq,ProQ) 起作用,与向mRNA形成广泛的RNA-RNA相互作用网络.
- 了解这些活体动态相互作用对于破译基因调节至关重要.
研究的目的:
- 开发和验证一种精简的体内方法,用于系统地分析RNA-RNA互动组.
- 在不同的生长阶段研究沙门氏菌中动态sRNA互动体.
- 在细菌转录组中识别关键的调节枢纽和网络.
主要方法:
- 细胞内RIL-seq (iRIL-seq) 方法的开发,用于体内RNA-RNA相互作用的分析.
- 在多个生长阶段对Salmonella enterica应用iRIL-seq.
- 生物信息分析以确定sRNA-mRNA相互作用和监管枢纽.
主要成果:
- 该iRIL-seq方法为绘制细胞内RNA-RNA相互作用提供了一个强大的和通用的方法.
- 识别了OmpD毛细菌mRNA作为一个中央调节枢纽,由包括FadZ.在内的众多sRNA作为目标.
- 发现了一种I型不连贯的前循环,涉及脂肪酸代谢中的OmpD,FadZ和CRP.
结论:
- 建立了一种强大的方法 (iRIL-seq),用于对活细菌细胞中的RNA-RNA相互作用体进行全面分析.
- 突出了RNA调节枢纽和控制细菌基因表达的网络的复杂性.
- 提供了关于通过sRNA介导的OmpD和FadZ的控制来调节脂肪酸代谢的见解.
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