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与年龄相关的和特定物种的甲基化变化在编码蛋白质的鱼精子表观基因组中
Marcus Dittrich1,2, Laura Bernhardt1, Christopher A Penfold3,4
1Institute of Human Genetics, Julius Maximilians University, Würzburg, Germany.
Aging cell
|May 17, 2024
概括
父亲的年龄影响精子表观遗传学,影响后代的健康. 这项研究发现,与年龄相关的DNA甲基化变化在人类和大黄蜂精子中相反,突出了基因调节中的特定物种模式.
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.
- 进行比较基因组学.
背景情况:
- 精子表观基因组影响胚胎发育和后代的健康.
- 父亲的年龄与生殖和后代的医疗风险有关.
- 与年龄相关的精子甲基化变化在人类和模型生物体中被研究.
研究的目的:
- 为了比较分析父亲年龄对人类和鸟精子甲基组中的蛋白质编码基因的影响.
- 为了确定与年龄相关的差异甲基化转录起始点 (ageTSS) 区域.
- 研究特定物种的甲基化模式及其对发展的潜在影响.
主要方法:
- 使用了减少表示双硫酸盐测序 (RRBS).
- 对人类和大黄蜂的精子甲基组进行比较分析.
- 与年龄相关的差异甲基化转录起始点 (ageTSS) 区域的识别和表征.
主要成果:
- 与年龄相关的年龄TSS区域在204个鱼和27个人类基因中被确定.
- 甲基化变化显示相反的方向:随着年龄的增长在海,在人类下降.
- 超过300个编码蛋白质的基因表现出特定物种的TSS甲基化;几个GLS生物合成基因显示出不同物种的甲基化和表达模式.
结论:
- 父亲的年龄在不同物种中不同影响精子甲基化,在人类和小熊猫中观察到相反的趋势.
- 精子中的特定物种甲基化模式,特别是GLS通路基因,可能会影响早期胚胎发育.
- 马尔莫塞特作为一个有价值的模型研究与衰老相关的精子表观遗传变化及其发展后果.
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