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在卵巢发育中对组织选择性TBP相关因子TAFII105的要求
R N Freiman1, S R Albright, S Zheng
1Department of Molecular and Cell Biology, Howard Hughes Medical Institute, University of California at Berkeley, Berkeley, CA 94720-3204, USA.
Science (New York, N.Y.)
|September 15, 2001
概括
转录因子TFIID的TAFII105亚单元对于小鼠卵巢发育和生育是至关重要的. 它的缺失会导致不孕症,原因是毛囊发育缺陷和信号通路受损.
科学领域:
- 分子生物学分子生物学
- 发育生物学 发展生物学
- 生殖生物学 生殖生物学
背景情况:
- 转录因子TFIID是RNA聚合酶II的基因转录的关键调节者.
- TFIID包括TBP和各种TAFII子单元,其中一些表现出组织特异性表达.
- 组织选择性TAFII子单元在器官发育中的作用尚未完全理解.
研究的目的:
- 研究TFIID的TAFII105亚单元在小鼠卵巢发育和功能中的功能.
- 确定TAFII105缺乏对雌性小鼠的卵泡生成和生育能力的影响.
主要方法:
- 产生和分析缺乏TAFII105基因的雌性小鼠.
- 卵巢形态和卵泡发育的组织学检查.
- 基因表达分析以确定受影响的信号通路.
主要成果:
- 缺乏TAFII105的雌性小鼠是可行的,但不育的.
- TAFII105 缺乏导致毛囊发育缺陷.
- 在粒状细胞中TAFII105的受限表达对卵巢功能至关重要.
- 基因表达特征分析显示,TAFII105缺陷的卵巢中存在缺陷的inhibin-activin信号通路.
结论:
- 组织选择性TAFII105亚单元对于小鼠卵巢的正常发育和功能至关重要.
- TAFII105调解了对卵泡发育至关重要的基因的转录.
- TAFII105是哺乳动物转录机器中细胞类型特定的组成部分,参与生殖过程.
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