在卵细胞衰老过程中,AMPK活动的丧失会诱导器官功能障碍和氧化应激
Lin-Lin Hu1, Mei-Hua Liao1, Ya-Xi Liu2
1Key Laboratory of Research on Clinical Molecular Diagnosis for High Incidence Diseases in Western Guangxi, Reproductive Medicine, Guangxi Medical and Health Key Discipline Construction Project, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China.
Biology direct
|April 23, 2024
概括
AMP激活蛋白激酶 (AMPK) 对于在衰老期间保持卵细胞质量至关重要. AMPK激活减少氧化应激,并支持有机细胞功能,这对哺乳动物的繁殖和早期发育至关重要.
科学领域:
- 生殖生物学 生殖生物学
- 细胞的新陈代谢
- 卵细胞衰老 卵细胞衰老
背景情况:
- 卵细胞质量对于哺乳动物的繁殖,受精和早期发育至关重要.
- 衰老导致卵细胞功能障碍,氧化应激和不孕.
- AMP激活蛋白激酶 (AMPK) 调节能量稳态,但其在卵细胞衰老中的作用尚不清楚.
研究的目的:
- 研究AMPK与卵细胞衰老之间的关系.
- 阐明AMPK影响卵细胞质量的机制.
主要方法:
- 在卵细胞衰老期间分析AMPK水平.
- 在小鼠卵细胞中抑制AMPK活性.
- 评估反应性氧物种 (ROS) 水平.
- 评估线粒体功能 (分布,ATP生产,mtDNA复制数).
- 检查内等质网膜 (ER),戈尔吉装置和溶酶体功能.
主要成果:
- 在卵细胞衰老过程中,AMPK水平发生变化.
- 抑制AMPK会影响小鼠卵细胞的成熟.
- AMPK的激活降低了ROS水平,减轻了氧化应激.
- 失去AMPK活动会导致线粒体功能障碍 (分布异常,ATP减少,mtDNA复制数减少).
- 抑制AMPK导致异常的ER和戈尔吉分布,并增强了溶酶体功能.
结论:
- 在卵细胞中介成熟过程中,AMPK在维持器官功能方面发挥着至关重要的作用.
- AMPK对于降低老化卵细胞中的氧化应激很重要.
- AMPK是细胞平衡的关键调节者,对于繁殖成功至关重要.
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