NLRP4E通过SRC和CDC42在卵细胞半转移过程中调节动蛋白帽的形成
Li-Ya Shi1,2,3,4,5, Yang Wang1,3,4,5, Yan-Jie Yang1,3,4,5
1Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, No 218 Jixi Road, Hefei, 230022, Anhui, China.
Cellular & molecular biology letters
|May 10, 2024
概括
核酸结合的寡合化域,富含白素的重复和含有4E (NLRP4E) 的pyrin域对于卵子细胞半离合I至关重要. 它调节了动氨酸帽的形成和转位,确保了女性生育的适当极体挤出.
科学领域:
- 细胞生物学 细胞生物学
- 生殖生物学 生殖生物学
- 分子生物学分子生物学
背景情况:
- 核酸结合的寡合化域,氨酸丰富的重复和含有 (NLRP) 皮林域的家族调节关键的细胞过程.
- 对于NLRP4E在卵细胞半转化I中的特定作用,特别是在动蛋白帽的形成和转位方面,仍然没有特征.
- NLRP4E被认为是女性生育能力的候选蛋白质,需要进行功能性研究.
研究的目的:
- 为了阐明NLRP4E在小鼠卵细胞半细胞分裂中的功能,I.
- 研究NLRP4E调节不对称细胞分裂的分子机制.
- 为了确定NLRP4E.的相互作用蛋白和调节途径.
主要方法:
- 免疫光学,RT-PCR和西部涂抹被用于评估NLRP4E表达和局部化.
- siRNA和抗体转染被用于基因敲除和功能分析.
- 免疫沉质谱和共免疫沉确定并验证了NLRP4E蛋白相互作用.
- 在体外酸化试验中,研究了NLRP4E激活类固醇受体协活性剂 (SRC) 的情况.
主要成果:
- NLRP4E主要表达在卵细胞中,对于在半变异I过程中形成动蛋白帽和螺旋转移至关重要.
- 敲除NLRP4E破坏了极体挤出,表明不对称的分裂失败.
- GRIN1和GANO1通过酸化激活NLRP4E,促进其转移到actin cap区域.
- 化NLRP4E激活SRC,这反过来又降低了非活性CDC42的调节,促进了actin cap的形成.
结论:
- 通过GRIN1和GANO1激活的NLRP4E,在卵细胞半转化I过程中,在调节动蛋白帽形成和转位方面发挥着至关重要的作用.
- 该途径涉及p-SRC-Tyr418的上调和p-CDC42-S71.1.的下调.
- 这些发现凸显了NLRP4E作为女性半月变和生育能力的关键调节者.
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