IP3R1是通过调节线粒体和氧化损伤来调节中性进展和胚胎发育所需的
Chang Zhang1, Xiaoqing Sun1, Deyi Wu1
1College of Animal Science and Technology, Jilin Agricultural University, Xincheng Street 2888, Changchun 130118, China.
Theriogenology
|August 23, 2024
概括
伊诺西1,4,5-三酸盐受体1 (IP3R1) 调节线粒体,影响猪卵细胞的发育. 降低IP3R1导致过载,氧化应激和胚胎发育受损.
科学领域:
- 细胞生物学 细胞生物学
- 生殖生物学 生殖生物学
- 线粒体功能的功能
背景情况:
- 离子 (Ca2+) 对于细胞增殖和分化至关重要.
- 伊诺西1,4,5-三酸盐受体 (IP3R) 调节了 Ca2+ 在内分泌网膜和线粒体之间传递的过程.
- IP3R1在猪卵细胞减量和胚胎发育中的作用尚不清楚.
研究的目的:
- 调查IP3R1在猪卵细胞介质进展和胚胎发育中的功能.
- 阐明IP3R1影响线粒体调节和氧化应激的机制.
主要方法:
- 在猪卵细胞中,siRNA介导的IP3R1的淘汰.
- 杜林克II在位近距离结合试验 (PLA) 用于分析蛋白质相互作用.
- 评估线粒体Ca2+ ([Ca2+]m) 水平,氧化应激 (ROS) 和ATP的产生.
- 评估卵细胞中介成熟和胚胎发育.
主要成果:
- IP3R1敲击破坏了IP3R1-GRP75-VDAC1复合体,增加了ER-线粒体相互作用和线粒体Ca2+积累.
- Ca2+过载诱导了线粒体的氧化应激,高反应性氧物种 (ROS) 和降低ATP的产生.
- 观察到卵细胞成熟受损,胚胎发育晚期,亡增加.
- 用红或N-乙半氨酸治疗改善了发育异常和氧化应激.
结论:
- IP3R1对于调节猪卵细胞化过程中的线粒体平衡至关重要.
- IP3R1在预防线粒体氧化损伤方面发挥着关键作用,从而支持卵细胞成熟和胚胎发育.
- 针对IP3R1-介导途径可能提供提高猪生殖效率的策略.
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