体重指数对精液质量,精子染色素完整性和精子DNA甲基化的影响
Miluse Vozdova1, Svatava Kubickova1, Vera Kopecka1
1Department of Genetics and Reproductive Biotechnologies, Central European Institute of Technology, Veterinary Research Institute, Brno, Czech Republic.
Obesity research & clinical practice
|October 2, 2024
概括
肥胖影响男性生育能力,因为它改变了EPHA8和ANKRD11.11等基因中的精子DNA甲基化. 体重指数增加与精子运动率降低和DNA完整性损害有关,可能会影响后代的发育.
科学领域:
- 生殖生物学 生殖生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 人类健康 人类健康 人类健康
背景情况:
- 肥胖是一个全球性的健康问题,对人类生殖健康有重大影响.
- 现有的研究表明,肥胖和男性生育能力下降之间存在相关性,但潜在的分子机制需要进一步阐明.
研究的目的:
- 研究不同体重指数 (BMI) 对健康男性精液质量,精子DNA完整性和基因特异性CpG甲基化的影响.
- 确定特定的基因,其甲基化模式因体重过重而改变,并将这些变化与精子功能和生育能力相关联.
主要方法:
- 使用精子染色体结构试验 (SCSA) 分析精液质量,精子DNA完整性以及通过甲基化下一代测序 (NGS) 和安普利康测序进行基因特异性CpG甲基化.
- 根据BMI,116名健康男性被分为三组.
- 在与BMI相关的精子DNA中识别和验证差异甲基化区域 (DMR).
主要成果:
- 在精子中确定了六个显著差异甲基化区域 (DMR),其中两个位于EPHA8和ANKRD11基因中,证明正常BMI和BMI≥25之间有差异甲基化.
- 随着BMI的增加,EPHA8,ANKRD11和CFAP46基因甲基化的显著下降被观察到.
- 体重指数≥30的男性表现出明显较低的运动性和进展性运动性精子,以及受损的精子染色质完整性.
结论:
- 体重过多会改变特定基因 (EPHA8,ANKRD11,CFAP46) 中的CpG甲基化,影响精子运动性和染色质完整性,从而导致男性生育能力下降.
- 这些肥胖引起的精子表观遗传修饰可能是遗传的,可能导致下一代的发育和生殖问题.
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