吉林大学学报(医学版) ›› 2020, Vol. 46 ›› Issue (04): 675-679.doi: 10.13481/j.1671-587x.20200402

• 基础研究 • 上一篇    

CDC14B在小鼠1-细胞期受精卵各细胞周期的动态表达及其定位

刘岚清1, 李瑞林1, 周晓敏1, 孟峻2   

  1. 1. 内蒙古医科大学研究生学院, 内蒙古 呼和浩特 010059;
    2. 内蒙古医科大学附属医院检验科, 内蒙古 呼和浩特 010050
  • 收稿日期:2019-08-22 发布日期:2020-08-20
  • 通讯作者: 孟峻,主任检验师,硕士研究生导师(Tel:0471-6637610,E-mail:nmfrank@163.com) E-mail:nmfrank@163.com
  • 作者简介:刘岚清(1994-),女,山西省忻州市人,在读医学硕士,主要从事临床生物化学和生殖分子生物学方面的研究。
  • 基金资助:
    国家自然科学基金资助课题(81360109,81660267);内蒙古自治区科技厅自然科学基金资助课题(2013MS1163)

Dynamic expression and localization of CDC14B in each cell cycle of mouse one-cell fertilized eggs

LIU Lanqing1, LI Ruilin1, ZHOU Xiaomin1, MENG Jun2   

  1. 1. Graduate College, Inner Mongolia Medical University, Hohhot 010059, China;
    2. Department of Laboratory, Affiliated Hospital, Inner Mongolia Medical University, Hohhot 010050, China
  • Received:2019-08-22 Published:2020-08-20

摘要: 目的:检测小鼠1-细胞期受精卵各细胞周期中细胞分裂周期蛋白14B(CDC14B)的表达水平及其定位,初步阐明CDC14B对哺乳动物受精卵早期发育调控的机制。方法:通过超排卵技术分别收集小鼠1-细胞期受精卵,采用RT-PCR和Western blotting法检测小鼠不同细胞周期1-细胞期受精卵中CDC14B mRNA和蛋白表达水平;采用细胞免疫荧光法观察小鼠不同细胞周期1-细胞期受精卵中CDC14B和β微管蛋白(β-tubulin)的共定位情况。结果:与G1期比较,小鼠S、G2和M期1-细胞期受精卵中CDC14B mRNA和蛋白表达水平明显升高(P<0.05或P<0.01)。间接免疫荧光实验,CDC14B(红色荧光)和β-tubulin(绿色荧光)在G1期和S期共定位于小鼠受精卵皮质;在G2早期,CDC14B和β-tubulin共定位于皮质和细胞质;在G2晚期,部分CDC14B入核;在M期,CDC14B和β-tubulin共定位于纺锤体。结论:CDC14B在小鼠不同细胞周期1-细胞期受精卵中动态表达,CDC14B存在核浆纺锤体转位,CDC14B的定位变化可能调控纺锤体的功能。

关键词: 细胞分裂周期蛋白14B, 受精卵, 有丝分裂细胞周期, 小鼠

Abstract: Objective: To observe the expression and localization of cell division cycle 14B (CDC14B) in each cell cycle of the mouse one-cell fertilized eggs,and to elucidate preliminarily the mechanism of CDC14B regulating the early development of mammalian fertilized eggs. Methods: The superovulation technique was used to collect the mouse one-cell fertilized eggs. The expression levels of CDC14B mRNA and protein in the mouse one-cell stage fertilized eggs in different cell cycles were detected by RT-PCR and Western blotting methods, respectively. Co-localization of CDC14B and β-tubulin in the mouse one-cell fertilized eggs in different cell cycles was observed by cell immunofluorescence method. Results: Compared with G1 phase, the expression levels of CDC14B mRNA and protein in the mouse one-cell fertilized eggs in S, G2 and M phases were significantly increased(P<0.05 or P<0.01).The cellular immunofluorescence assay results showed that CDC14B (red fluorescence) and β-tubulin (green fluorescence) were co-located in the cortex of fertilized mouse eggs in G1 phase and S phase,in the early G2 phase, CDC14B and β-tubulin co-localized in the cortex and cytoplasm; in the late G2 phase, part of CDC14B entered the nucleus; in the M phase, CDC14B and β-tubulin co-localized in the spindle. Conclusion: CDC14B dynamically expresses in each cell cycle of the mouse one-cell fertilized eggs. CDC14B has nuclear plasma spindle translocation, and the localization changes of CDC14B may regulate the spindle function.

Key words: cell division cycle 14B protein, fertilized eggs, mitosis cell cycle, mice

中图分类号: 

  • Q132