Progress in The Study of Nucleolus Precursor Bodies During The Early Embryonic Development

文献类型： 外文期刊

第一作者： Fu Bo

作者： Fu Bo;Liu Di

作者机构：

关键词： nucleolus precursor bodies;early embryonic development;chromatin remodeling;centromere

期刊名称：PROGRESS IN BIOCHEMISTRY AND BIOPHYSICS （ 影响因子：0.351； 五年影响因子：0.272 ）

ISSN： 1000-3282

年卷期： 2017 年 44 卷 3 期

页码：

收录情况： SCI

摘要： Nucleolus precursor bodies exist in the oocytes and early embryos, and at present, the few components of nucleolus precursor bodies have been identified because of their less content and compact structures in the oocytes. The complete components of the structure of nucleolus precursor bodies have not been elaborated, thereby clarifying the role of the nucleolus precursor bodies in the early embryonic development remains a challenge. The early view is that the nucleolus precursor bodies do not have the ability to process rRNA and generate ribosomes, but this structure provides the material basis for the formation of fibrillo-granular nucleoli, and therefore enabling the late development of embryos to regain the ability of ribosome generation. Recently, this view has been gradually modified. The transfer experiments based on the micromanipulation of nucleolus precursor bodies have confirmed that the maternal nucleolus precursor bodies play a key role in the early embryonic development and the time window of their actions is between fertilization and pronucleus stage. The nucleolus precursor bodies may participate in the process of chromatin remodeling and maintain centromere stability, furthermore affecting the development of early embryos. This article reviews the structure and function of nucleolus precursor bodies as well as the possible mechanism providing a new idea to profound understanding of the developmental potential of early embryos.

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