TRIP13定位在突触染色体上,并充当了微变的剂量敏感调节器
Jessica Y Chotiner1, N Adrian Leu1, Fang Yang1
1Department of Biomedical Sciences, University of Pennsylvania School of Veterinary Medicine, Philadelphia, United States.
eLife
|August 29, 2024
概括
鼠标TRIP13蛋白对半变异至关重要,确保适当的染色体配对并防止不育. 它的缺失导致突触体复合体 (SC) 重塑和染色体对齐的严重缺陷.
科学领域:
- 细胞生物学 细胞生物学
- 遗传学 是一个遗传学.
- 生殖生物学 生殖生物学
背景情况:
- 介质性进展依赖于染色体突触和重组过程中的精确蛋白质复合体动力学.
- 荷尔马域蛋白 (HORMADs) 是关键的调节者,与非突触轴结合,并在突触时解离.
- 鼠标TRIP13 (三重拓聚酶II相关蛋白13) 和它的正方体Pch2都与HORMA蛋白重塑有关.
研究的目的:
- 为了研究小鼠TRIP13在变化过程中的局部化和功能.
- 为了确定TRIP13丧失对介质进展和染色体结构的影响.
- 阐明TRIP13在HORMA域蛋白质动态和突触膜复合体 (SC) 调节中的作用.
主要方法:
- 免疫光显微镜用于确定小鼠精子细胞中的TRIP13定位.
- 在野生型和*Trip13*-null小鼠中分析介质进展和染色体形态.
- 评估HORMAD1和HORMAD2在*Trip13*-null半细胞中的定位.
- 产生和分析表达终端FLAG标记TRIP13的小鼠.
主要成果:
- TRIP13定位在整个介质前期I的突触SC和端粒中.
- 失去TRIP13会导致两性中介性停产和不育.
- *Trip13*-null半细胞在突触SC和染色体异突触上显示持久的HORMAD1/2,特别影响XY染色体和中心区域.
- 对SC的TRIP13定位是独立于轴元素蛋白的 (REC8,SYCP2/3).
- TRIP13作为一种对剂量敏感的化调节剂.
结论:
- 在突触过程中,TRIP13对于适当的SC重塑和HORMA蛋白解离至关重要.
- TRIP13对突触染色体的保存局部化解释了跨物种的HORMA蛋白质解离.
- TRIP13是一个关键的,剂量敏感的男性和女性半月变的调节器.
关键词:
在 TRIP13 中,我们可以使用 TRIP13 .细胞生物学 细胞生物学生育能力 生育能力 生育能力 生育能力介质变化 (meiosis) 是一种变质的过程.这里是鼠标鼠标鼠标鼠标鼠标鼠标.精子的产生是精子的产生.更多相关视频
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