通过肝脏基因表达来探索羊群中耐热性候选基因
Messy Hannear de Andrade Pantoja1, Francisco José de Novais1, Gerson Barreto Mourão2
1Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Av. Duque de Caxias Norte, 225, Pirassununga, SP, 13635-900, Brazil.
Heliyon
|February 19, 2024
概括
耐热的圣伊内斯羊在肝脏中表现出更高的特定基因表达,有助于适应热量. 这些发现对于改善牲畜在炎热气候下对热应激的抵抗力至关重要.
科学领域:
- 动物科学动物科学
- 基因组学就是基因组学.
- 生理学 生理学 生理学
背景情况:
- 耐热性对动物健康和生产力至关重要,尤其是在暴露于热应激的牲畜中.
- 在动物品种中存在热耐性的遗传变异,需要识别潜在的遗传因素.
- 圣伊内斯羊以不同的耐热性而闻名,作为研究热适应性的模型.
研究的目的:
- 为了确定与圣伊内斯羊热应激反应相关的肝脏候选基因.
- 了解这种品种适应热量的分子机制.
- 为选择耐热动物提供遗传标记.
主要方法:
- 根据耐热性选择了80只圣伊内斯羊,并将它们暴露在受控的热应激条件下 (每天36°C6小时).
- 根据直肠温度选择了14种极端动物 (7种耐热,7种不耐热),用于肝脏组织采样.
- 进行RNA测序和差异基因表达分析,以比较群体之间的基因活性.
主要成果:
- 耐热的羊表现出显著更高的基因表达,包括GPx3,RGS6,GPAT3,VLDLR,LOC101108817,和EVC.
- 调节后的基因主要涉及到刺信号通路,谷甲代谢,糖脂代谢和甲状腺激素合成.
- 这些途径可能参与缓解热应激效应并增强耐热性.
结论:
- 鉴定了与圣伊内斯羊的优越耐热性相关的关键基因和途径.
- 这些遗传因素可能会增强耐热性,为选择性繁殖提供潜力.
- 这些发现有助于理解牲畜适应热环境,并改善动物福利和生产力.
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