METTL14 缓解胡羊的热应激,包括增强脂肪酸氧化,同时减少脂质沉积
Bowen Chen1,2, Chao Yuan1,2, Tingting Guo1,2
1Key Laboratory of Animal Genetics and Breeding on the Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, China.
Frontiers in veterinary science
|February 4, 2026
概括
METTL14基因通过增强脂肪酸氧化和减少脂质沉积来减轻绵羊的热应激. 这一发现为改善在热应激条件下的绵羊生产提供了新的策略.
科学领域:
- 动物科学动物科学
- 分子生物学分子生物学
- 代谢调节 代谢调节 代谢调节
背景情况:
- 热应激对绵羊生产,健康和利能力产生负面影响.
- METTL14基因与胡羊的热应激反应和脂质代谢有关.
- 将METTL14与热应激和脂质代谢联系在一起的精确机制需要阐明.
研究的目的:
- 调查METTL14在调解热应激和胡羊脂质代谢中的作用.
- 了解METTL14,热应激反应和脂质代谢之间的功能联系.
- 为了确定减轻绵羊热应激的潜在治疗目标.
主要方法:
- 在胡羊肝细胞和脂肪细胞中建立了热应激,脂质沉积和联合条件的细胞模型.
- 用于METTL14的基因干扰和过度表达技术.
- 使用qRT-PCR,免疫光,RNA-seq和LC-MS进行分子和代谢分析.
主要成果:
- 发现METTL14表达在热应激和脂质沉积条件下调节热冲击和脂质基因.
- 过度表达METTL14增加了m6A甲基化,降低了关键热冲击 (HSP60,HSP70,HSP110) 和脂质基因 (FABP4,PPARγ,Accα) 的调节.
- 提升METTL14表达促进了通过MTTP输出甘油三,减少了细胞内甘油三积累.
结论:
- METTL14在减轻胡羊的热应激方面发挥着至关重要的作用.
- 该研究揭示了一种涉及METTL14促进脂肪酸氧化和减弱脂质沉积的新机制.
- METTL14代表了提高羊对热应激的抵抗力和增强代谢健康的潜在目标.
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