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综合的替代分离图谱揭示了NSRP1通过CCDC18促进脂肪生成
Lei Liu1,2, Wei Wang1,2, Weiwei Liu1,2
1Key Laboratory of Livestock and Poultry Multi-Omics of MARA, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518124, China.
International journal of molecular sciences
|March 13, 2024
概括
猪的替代拼接 (AS) 揭示了繁殖的关键基因. 这项研究确定了调节脂肪沉积和肉质的拼接因子和转录因子,增强了猪肉的多样性.
科学领域:
- 基因组学和分子生物学
- 动物科学动物科学
- 生物信息学是一种生物信息学.
背景情况:
- 替代拼接 (AS) 对于基因调节和多样性至关重要,但它在猪中的作用,特别是比较东方和西方品种,尚未得到充分探索.
- 了解不同组织中的AS对于识别影响肉质和脂肪沉积等经济重要特征的基因至关重要.
研究的目的:
- 在8种组织中对猪的替代拼接事件 (ASE) 进行全面分析,整合转录因子 (TF),选择信号,拼接因子 (SF) 和定量特征位置 (QTL).
- 确定与组织特异性特征相关的基因和途径,特别是脂肪沉积和免疫反应,以及它们通过AS的调节.
- 发现用于猪遗传育种和肉质提升的新型标记基因.
主要方法:
- 从8个猪组织中分析了243个转录组数据集.
- 识别和分类五种类型的附属股权,重点是相互排斥的外汇交易 (MXE) 和跳过的外汇交易 (SE) 事件.
- 整合有关TF,选择信号,SF和QTL的数据,以了解AS监管.
- 差异替代拼接基因 (DASGs) 和差异表达基因 (DEGs) 的功能丰富分析.
主要成果:
- 确定了流行的MXE和SE ASEs,在整个组织中显著保留了AS基因 (ASG).
- 在DASG和DEG中观察到的组织特异性模式,血液和脂肪组织显示了更多的DASG.
- 丰富分析将脂肪中的coDASG_DEG与脂肪沉积和免疫炎症联系起来,血液中的coDASG_DEG与免疫炎症和新陈代谢联系起来.
- 确定了影响脂肪特征的潜在调节基因 (例如,ARID4A,NSRP1),NSRP1通过ACD18的AS调节促进脂肪生成.
结论:
- 替代拼接在调节猪的特征方面发挥着重要作用,包括脂肪沉积和免疫反应.
- 由AS调节的特定基因和途径被确定为改善养猪和肉质的潜在目标.
- 这项研究为猪肉质量多样性的遗传基础提供了宝贵的见解,并为育种计划提供了标记基因.
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