多omics整合分析揭示了CNVs对牛屠宰特征的监管影响
Jiayuan Wu1, Qunhao Niu2, Tianyi Wu1
1State Key Laboratory of Animal Biotech Breeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
International journal of biological macromolecules
|July 29, 2025
概括
副本数量变化 (CNVs) 影响牛的特征. 这项研究确定了与肉类和料百分比相关的CNV,揭示了它们在改善牛养殖的基因表达中的调节作用.
科学领域:
- 基因组学就是基因组学.
- 动物遗传学动物遗传学
- 量化遗传学 量化遗传学
背景情况:
- 副本数变异 (CNVs) 是影响基因表达和表型变异的显著基因组变化.
- 了解CNV对于剖析牲畜复杂特征的遗传基础至关重要.
研究的目的:
- 系统地识别和描述牛基因组中的CNV.
- 将已识别的CNV与经济上重要的特征联系起来,例如瘦肉百分比 (LMP) 和装饰百分比 (DP).
- 探索CNVs对基因表达和替代拼接的调节机制.
主要方法:
- 通过使用Bovine HD SNP阵列对CNV进行全基因组识别.
- 基于CNV的全基因组关联研究 (GWAS) 寻找特征关联.
- 表达量的特征位置 (eQTL) 和拼接量的特征位置 (sQTL) 分析.
- 不同表达的替代拼接 (DEAS) 分析.
主要成果:
- 在整个牛基因组中确定了124,790个CNV.
- 发现了与LMP (17个细分) 和DP (3个细分) 有意义的CNV关联.
- 发现了与基因表达和LMP相关的众多表达CNV区域 (eCNVR) 和替代拼接事件 (ASE).
- 综合分析确定了与LMP相关的14kb删除 (ILVBL,SYDE1) 和12kb重复 (GC基因).
结论:
- CNV在牛屠宰特征的遗传结构中发挥着重要作用.
- 阐明的CNV介导的基因调节机制,包括对表达和拼接的影响.
- 研究结果为推进牛精密育种策略提供了宝贵的见解.
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