一种代理组-RNA捕获方法揭示了处理体抑制正调节的枢纽基因
Chen Liu1,2, Andriani Mentzelopoulou1,3, Ioannis H Hatzianestis1,3
1Department of Biology, University of Crete, Heraklion 70013, Greece.
研究人员开发了一种新的方法来识别细胞凝聚物中称为处理体 (PBs) 的RNA. 这项研究揭示了PB中的RNA组成和命运是如何动态调节的,影响植物应激反应.
科学领域:
- 植物分子生物学 植物分子生物学
- 细胞生物学 细胞生物学
- 生物化学 生物化学
背景情况:
- 细胞凝聚物,如处理体 (PBs),是缺乏膜的核蛋白组件,使得它们的组成分析具有挑战性.
- 了解这些凝聚物的动态性质和功能对于细胞调节至关重要.
研究的目的:
- 开发和应用一种近距离生物化方法,用于捕获和分析Arabidopsis PBs.内的RNA.
- 在正常和热应激条件下研究PBs的动态RNA组成.
- 阐明调节RNA招募,命运和凝结物性质的机制.
主要方法:
- 接近生物化试验以捕获Arabidopsis PBs.中的RNA.
- 检测RNA,在分析和高分辨率成像.
- 在正常和热应力下研究PB动态.
主要成果:
- PBRNA的组成是高度动态的,并且与总转录组有很大的差异.
- PBs中的丰富RNA参与细胞壁发育,荷尔蒙信号传递,防御和RNA代谢.
- RNA招募是由RNA结合蛋白和PB流动性调节的;RNA通常与它们编码的蛋白质一起招募.
- 观察到不同的RNA命运:在类似液体的PBs中降解,并在类似固体的PBs中储存.
- SCAR/WAVE复合体调节PB特性和RNA穿,影响乙烯信号传递.
结论:
- 一种新的近距离生物化方法有效地识别了细胞凝聚物中的RNA.
- 植物对压力的反应中,PBRNA的组成和动态是至关重要的.
- 涉及RNA结合蛋白,凝结物质和SCAR/WAVE复合体的机制调节RNA命运和细胞信号传递.
更多相关视频
10:53Isolation of Cognate RNA-protein Complexes from Cells Using Oligonucleotide-directed Elution
Published on: January 16, 2017
08:46Transcriptome-Wide Profiling of Protein-RNA Interactions by Cross-Linking and Immunoprecipitation Mediated by FLAG-Biotin Tandem Purification
Published on: May 18, 2020
相关概念视频
Chromatin Structure Regulates pre-mRNA Processing
The chromatin structure, especially...
Ribosome Profiling
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
Regulation of Expression at Multiple Steps
Prokaryotic Transcriptional Activators and Repressors
pre-mRNA Processing
Once about 20-40 ribonucleotides have been joined together by RNA polymerase, a group of enzymes adds a “cap” to the 5’ end of the growing transcript. In this process, a 5’ phosphate is replaced by modified guanosine that has a methyl group attached to it (7-Methyl...
Regulation of Expression Occurs at Multiple Steps
