细胞质处理小体(P-小体)与基因表达的调控

1)深圳大学生命科学学院,深圳市微生物基因工程重点实验室,深圳 518060; 2)加州大学河滨分校植物学与植物科学研究院,综合基因组生物学研究所,美国河滨 92521; 3)深圳大学生命科学学院,深圳市海洋生物技术与生态环境重点实验室,深圳 518060

细胞生物学; P-小体; 基因表达调控; mRNA降解; 翻译抑制; 小RNA分子

Cytoplasmic processing bodies(P-bodies)and the regulation of gene expression
Mo Beixin1, Fu Xiaojie1, Mo Xiaowei1, Liu Li1,2, Xu Xiaofeng3, and Yue Luming3

Mo Beixin1, Fu Xiaojie1, Mo Xiaowei1, Liu Li1,2, Xu Xiaofeng3, and Yue Luming31)College of Life Science, Shenzhen University, Shenzhen Key Laboratory of Microbial Genetic Engineering, Shenzhen 518060, P.R.China2)Department of Botany and Plant Sciences, University of California, Riverside, Institute of Integrative Genome Biology, Riverside, CA 92521, USA3)College of Life Science, Shenzhen University, Shenzhen Key Laboratory of Marine Biological Resources and Ecological Environment, Shenzhen 518060, P.R.China

cell biology; P-bodies; regulation of gene expression; mRNA degradation; translation inhibition; microRNA(miRNA)

DOI: 10.3724/SP.J.1249.2015.01048

备注

mRNA处理小体,又称P-小体(processing bodies,P-bodies),是细胞质中含有多种功能蛋白和RNA的聚集体. 评述P-小体的形成和运动特点,以及其与小RNA、外切体相互作用,参与基因表达的调控. 介绍了本实验室在P-小体植物细胞中的最新研究进展. 指出P-小体是mRNA降解和储存的场所,在转录后水平参与基因表达的调控,P-小体在细胞中是动态变化的,P-小体中多样化的功能蛋白在P-小体的组装、功能行使中发挥重要作用.P-小体作为细胞质内mRNA的储存和降解结构在基因表达的转录后调控中起重要作用,其调控机制尚待进一步研究补充,P-小体与小RNA分子(microRNA,miRNA)调控的基因沉默之间也存在关联性.

mRNA processing bodies(P-bodies)are cytosolic aggregates containing a variety of functional proteins and RNAs. We briefly review the features of P-bodies formation and movement, the interaction of P-bodies with small RNAs and exosomes in the regulation of gene expression. We also summarize the latest P-bodies related research progress in our lab. P-bodies where mRNA degradation and storage take place play an important role in the posttranscriptional regulation of gene expression. They undergo dynamic changes inside the cell. A variety of functional proteins located in P-bodies are involved in the cytoplasmic assembly and biological functioning of P-bodies. The regulatory mechanism of P-bodies still needs to be investigated futher. P-bodies also participate in microRNA(miRNA)-mediated gene silencing.

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