在胚胎中氧化酸化途径的放松调节,这些胚胎是基于全转录组测序在体外从青春期前和青春期的公牛中获得的,基于全转录组测序
Milena Traut1, Ilona Kowalczyk-Zieba1, Dorota Boruszewska1
1Department of Gamete and Embryo Biology, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn, 10-747, Poland.
青春期前小母牛的卵细胞可以产生可行的怀孕,其中的胚胎细胞表现出不同的基因表达特征. 尽管氧化酸化基因表达较低,但青春期前卵子细胞衍生芽细胞表现出减少的亡,这表明成功转移的潜力.
科学领域:
- 生殖生物学 生殖生物学
- 基因组学就是基因组学.
- 动物科学动物科学
背景情况:
- 卵细胞发育能力在青春期前和成年捐赠者之间有所不同.
- 转录基因分析提供了一种预测胚胎发育潜力的方法.
- 牛卵细胞来源于青春期前和青春期的公牛,用于比较分析.
研究的目的:
- 为了比较来自青春期前和青春期雌牛卵细胞的胚胎细胞的转录组形状.
- 识别与发育能力相关的差异表达基因 (DEGs).
主要方法:
- 从青春期前和青春期的公牛中收集了积卵细胞复合体 (COC).
- COCs经历了体外成熟,受精和随后的培养到囊胚阶段.
- 在胚芽细胞上进行了RNA测序 (RNA-seq) 和基因本体学分析 (DAVID,KEGG).
主要成果:
- 青春期公牛的平均胚胎细胞发育率更高,胚胎细胞质量没有差异.
- 在这些组之间,确定了436个差异表达基因 (DEG).
- 与线粒体功能和氧化酸化 (OXPHOS) 相关的基因表达差异,在青春期衍生芽细胞中,有8个被上调和1个被下调. 从青春期前的捐赠者的胚胎囊中观察到较低的亡细胞.
结论:
- 来自青春期前母牛卵细胞的胚胎囊表现出与OXPHOS相关的基因的表达减少.
- 这些胚胎囊中的ATP12A水平升高和亡减少可能会提高它们的移植后生存潜力.
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