映射表达量化特征定位点针对肉牛怀孕的候选基因
Wellison J S Diniz1, Juliana Afonso2, Nicholas C Kertz1
1Department of Animal Sciences, Auburn University, Auburn, AL 36849, USA.
Biomolecules
|February 24, 2024
概括
研究人员确定了在牛奶子宫细胞中调节基因表达的遗传变异. 这些表达量的特征位点 (eQTLs) 提供了对牛生育和生殖特征的遗传基础的见解.
科学领域:
- 动物基因组学 动物基因组学
- 生殖生物学 生殖生物学
- 基因表达规范 基因表达规范
背景情况:
- 了解生殖特征的遗传基础对于改善牛的生育能力至关重要.
- 之前的研究没有确定复杂的生殖特征的特定致病基因或突变.
研究的目的:
- 为了识别影响牛奶子宫光线上皮细胞基因表达的调节性遗传变异.
- 通过整合基因组学和转录组学数据来探索控制生育能力的遗传因素.
主要方法:
- 利用RNA-Seq数据识别肉牛表达量的特征位点 (eQTLs).
- 分析了影响基因表达的 cis 和 trans eQTL,重点关注转录因子和差异表达的基因.
- 使用CattleQTLdb.进行了功能过度表示分析和丰富分析.
主要成果:
- 鉴定了4676个cis和7682个跨eQTL,分别影响了1120个和2503个基因.
- 发现与转录因子基因相关的eQTL和以前与怀孕状态相关的基因.
- 通过eQTLs调节的新陈代谢,免疫反应和激素信号 (雌激素,GnRH) 的突出途径.
- 在13种繁殖特征的定量特征位置 (QTL) 区域观察到eQTL的丰富.
结论:
- 这项研究揭示了牛的生殖过程的遗传结构的新见解.
- 已识别的调节变异和途径为进一步调查子宫基因表达和生育的因果机制提供了基础.
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