伊诺醇基酸激酶1对于小鼠种子表皮细胞结完整性至关重要
Sameer Ahmed Bhat1, Aushaq Bashir Malla2, Vineesha Oddi1
1Laboratory of Cell Signalling, Centre for DNA Fingerprinting and Diagnostics (CDFD), Inner Ring Road, Uppal, Hyderabad 500039, India.
Biochimica et biophysica acta. Molecular cell research
|September 24, 2023
概括
在雄性小鼠中失去伊诺西六酸酶1 (IP6K1) 会破坏血液-丸屏障,延迟精子生成并导致雄性不育. 这突出了IP6K1的重要性.
科学领域:
- 生殖生物学 生殖生物学
- 分子内分泌学分子内分泌学
- 细胞生物学 细胞生物学
背景情况:
- 伊诺西六酸激酶 (IP6Ks) 产生5-IP7,调节哺乳动物的生理过程.
- 在哺乳动物的丸中,IP6K1的表达很高,它缺失会导致小鼠的雄性不育.
研究的目的:
- 研究IP6K1在精子生成和男性生育能力中的作用.
- 阐明IP6K1缺乏引起的男性不孕症背后的分子机制.
主要方法:
- 在幼年Ip6k1淘汰赛小鼠中的精子生成分析.
- 丸组织的转录分析.
- 紧密和间隙结合蛋白的免疫组织化学分析.
- 评估细胞骨动力学和信号通路 (AKT/ERK,整体蛋白).
主要成果:
- Ip6k1淘汰赛小鼠表现出延迟的第一波精子生成和男性不育.
- 失去IP6K1会通过降低细胞粘附转录的调节和错误调节Claudin 3和Connexin 43来破坏血液-丸屏障 (BTB).
- 缺少IP6K1会导致生殖细胞的粘附性丧失,过早的精子脱,增强的cofilin脱,以及actin细胞骨架的不稳定.
结论:
- 在小鼠中,IP6K1对于保持血液丸屏障完整性和正常的精子生成至关重要.
- IP6K1通过涉及可菲林,AKT/ERK和整体素的信号通路调节了塞尔托利细胞活性细胞骨的稳定性和生殖细胞粘附.
- 破坏IP6K1功能提供了男性不孕不育的潜在机制.
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