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Heterochronic genes regulate the lifespan of Caenorhabditis elegans and the expression in the development of mouse

Abstract

异时性基因控制着整个发育过程的时间性和空间性,确定细胞的命运,从而保证各种器官的准确定位和适时发育。异时性基因发生突变,会造成整个发育过程提前或推后。在C.elegans中研究最多的异时性基因有:lin-14、lin-28、lin-41、hbl-1、lin-29、MicroRNAlin-4和let-7等。异时性基因在调控细胞的增殖、发育及凋亡中有重要作用,在寿命调控、肿瘤发生以及其他生理病变中也起着关键的作用。本文主要通过RNAi、寿命分析、WesternBlot、免疫共沉淀、质谱分析和RT-PCR等方法来研究异时性基因在寿命调控中的作用,并对脊椎动物中与肿瘤发生相关的异时性同源基因lin-2...Heterochronic genes control the temporal and spatial pattern of entire development process and specify the cell fate to ensure accurate position of the various organs and developmental time. In heterochronic genes mutation, stage-specific developmental events occur at earlier or later stages than they would normally. MicroRNAs and other heterochronic genes play key roles in regulating cell prolife...学位:理学硕士院系专业:生命科学学院生物学系_动物学学号:2172006115212

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