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在冷保存过程中,MitoQ保留精子的表观遗传修饰和质量参数
Parisa Alipour-Jenaghard1, Hossein Daghigh-Kia1, Reza Masoudi2
1Department of Animal Science, College of Agriculture, University of Tabriz, Tabriz, Iran.
Reproduction in domestic animals = Zuchthygiene
|February 18, 2025
概括
冷保存对公精子质量和表观遗传标记有负面影响. 补充MitoQ,一种针对线粒体的抗氧化剂,显著改善了冷保存精子中的这些参数.
科学领域:
- 动物科学动物科学
- 生殖生物学 生殖生物学
- 生物技术是生物技术.
背景情况:
- 精液的冷保存对于遗传保存和人工授精至关重要.
- 冷保存可以诱导表观遗传变化并降低精子质量,影响生育能力.
- MitoQ是一种新的线粒体向抗氧化剂,具有潜在的保护作用.
研究的目的:
- 研究冷保存对精子表观遗传学和质量参数的影响.
- 评估MitoQ补充剂在缓解冷诱导的损伤方面的有效性.
主要方法:
- 的精液被冷保存,含有不同度的MitoQ (0,10,100nM).
- 评估的参数包括DNA甲基化,基因素乙化 (H3K9),基因素甲基化 (H3K4),运动性,形态学,线粒体活性,宏粒体完整性,脂质过氧化,DNA碎片化,亡和ROS.
- 将新鲜精液与有或没有MitoQ的冷精液进行比较.
主要成果:
- 冷保存显著降低了DNA甲基化,H3K9乙化,H3K4甲基化,运动性,膜完整性,线粒体活性,体完整性和活力.
- 低温保存增加了脂质过氧化,DNA碎片化,ROS度和类似于死亡的变化.
- 与对照人群相比,MitoQ补充 (10 和 100 nM) 显著改善了冷保存的精子中的表观遗传修饰和质量参数.
结论:
- 冷保存诱导精子有害的表观遗传和质量变化.
- 在冷保存期间,MitoQ补充剂在保护精子质量和表观遗传完整性方面显示出有前途.
- MitoQ可以成为提高精液冷保存成功的宝贵工具.
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