酸通过调节小牛肝细胞中拉巴胺素 (mTOR) 途径的机械点来促进葡萄糖生成
Guo Yan Wang1, Sen Lin Qin1, Yi Ning Zheng1
1College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China.
Animal nutrition (Zhongguo xu mu shou yi xue hui)
|October 16, 2023
概括
酸通过调节mTOR途径,增强小牛肝细胞中的葡萄糖生产. 它还可以防止脂肪酸引起的肝损伤,这表明乳牛的治疗潜力.
科学领域:
- * 生物化学和分子生物学
- * 动物科学与营养学
背景情况:
- *肝脏葡萄糖生成对于满足奶牛葡萄糖需求至关重要.
- * 酸盐是一种葡萄糖生成前体,会影响该途径中的基因表达.
- *了解酸盐在小牛肝细胞中的机制是改善奶牛健康的关键.
研究的目的:
- * 研究酸对小牛肝细胞中葡萄糖原性基因表达的作用.
- *阐明分子机制,包括mTOR通路的作用.
- * 评估酸对棕酸诱导的肝损伤的保护作用.
主要方法:
- * 初级小牛肝细胞被分离并用不同度的 propionate (NaP) 进行治疗.
- *分析了关键葡萄糖生成酶 (果糖-1,6-双酸酶,PEPCK,G6Pase) 的基因表达.
- *研究了转录因子 (PGC-1α,HNF-4α,FOXO1) 和mTORC1/mTORC2信号的参与. 使用了棕酸诱导的伤害模型.
主要成果:
- *酸显著增加了小牛肝细胞中葡萄糖生成基因的表达.
- * 氨酸通过mTORC1激活和mTORC2抑制对转录因子PGC-1α,HNF-4α和FOXO1进行上调.
- * 棕酸通过抑制mTORC1和激活mTORC2来降低肝细胞的葡萄糖生成能力;NAP逆转了这种影响.
结论:
- *酸通过调节mTOR通路,增强小牛肝细胞中的肝脏葡萄糖生成能力.
- * 氨酸表明对脂肪酸诱导的肝损伤有保护作用.
- * 酸显示出作为改善葡萄糖代谢和治疗乳牛肝损伤的治疗剂的潜力.
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