暴露在寒冷中调节了新生山羊的肝脏葡萄糖和脂质代谢
Duo Su1,2, Tianhui Zhou1,2, Yan Wang2
1Key Laboratory of Livestock and Poultry Multi-Omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, China.
International journal of molecular sciences
|September 28, 2023
概括
暴露于寒冷会改变新生山羊的肝脏代谢,影响能量平衡. 这项研究揭示了冷压后与葡萄糖和脂质代谢相关的基因表达的变化.
科学领域:
- 动物生理学 动物生理学
- 代谢调节 代谢调节 代谢调节 代谢调节
- 环境应激反应环境应激反应
背景情况:
- 暴露于寒冷会通过肝脏代谢显著影响能量恒温.
- 在寒冷压力后,肝脏中的特定基因调节网络尚未得到充分理解.
- 了解这些机制对于新生儿动物健康和生存至关重要.
研究的目的:
- 为了研究寒冷暴露对新生山羊肝脏代谢的影响.
- 在暴露于寒冷后,在肝脏中识别差异表达基因 (DEGs).
- 阐明控制肝脏对寒冷反应的基因调节网络.
主要方法:
- 新生山羊被暴露在寒冷 (6°C) 中24小时,室温 (25°C) 作为对照.
- 测量了血中葡萄糖 (GLU),非化脂肪酸 (NEFA) 和甘油三 (TG) 的水平.
- 在肝脏组织上进行RNA测序 (RNA-seq),以分析基因表达.
- 量化了肝脏中的葡萄糖和脂质含量.
主要成果:
- 寒冷暴露增加了血GLU,降低了血NEFA和TG水平.
- 在暴露于寒冷的山羊中,肝脏的葡萄糖含量增加,而肝脏的脂质含量减少.
- 通过RNA-seq识别了1600个DEG,其中555个是上调的和1045个是下调的基因.
- 参与糖解,糖原合成和脂肪酸降解途径的基因被上调.
结论:
- 暴露于寒冷会导致新生山羊的肝脏发生显著的代谢变化.
- 基因表达的变化支持增强的葡萄糖利用和合成,以及减少脂质积累.
- 这些发现为新生儿在寒冷压力下肝脂和糖原代谢提供了参考.
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