细胞外基质调节乳牛脂肪组织的仓库特异性脂肪生成能力
J F Fiallo Diez1, A P Tegeler1, C G Flesher2
1Department of Veterinary Sciences, Texas Tech University, Lubbock, TX 79409.
Journal of dairy science
|July 5, 2024
概括
乳牛的皮下脂肪组织 (SAT) 显示出比内脏脂肪组织 (VAT) 更大的脂肪生成能力. 仓储特异性细胞外矩阵 (EMX) 影响了这种差异,影响了代谢健康.
科学领域:
- 动物科学动物科学
- 代谢健康 代谢健康
- 脂肪组织生物学 脂肪组织生物学
背景情况:
- 脂肪组织的扩张是代谢健康的关键,特别是在过多的脂肪酸会损害健康的奶牛中.
- 了解脂肪组织 (AT) 脂肪生成的仓库特异性差异对于改善奶牛健康至关重要.
研究的目的:
- 为了比较乳牛皮下 (SAT) 和内脏 (VAT) 脂肪组织的脂肪生成能力和细胞外矩阵 (EMX) 特性.
- 确定EMX如何影响不同脂肪库中的脂肪生成.
主要方法:
- 从奶牛中采集的SAT和VAT样本用于转录组分析,基因表达 (RT-qPCR),脂肪细胞大小测定,质学和原评估.
- 隔离的本地EMX和培养的脂肪支流体和原生细胞 (ASPC) 在体外评估脂肪生成能力,脂解和葡萄糖吸收.
- 利用3D模型与脱细胞化AT来研究EMX-脂肪细胞交叉声.
主要成果:
- 皮下AT表现出比VAT更大的脂肪生成能力,由更高的ASPC丰度,脂肪生成基因表达 (ADIPOQ,FASN) 和脂质积累证明.
- 内脏AT比SAT更硬,这表明EMX在仓库特定差异中起作用.
- 内脏AT EMX在SAT细胞中损害了脂肪基因表达,突出显示了EMX-脂肪细胞交叉声.
结论:
- 皮下脂肪组织比乳牛的内脏脂肪组织更有脂肪性.
- 仓库特定的细胞外矩阵微环境部分调解了SAT和VAT之间脂肪生成的差异.
- 准EMX特性可能是提高乳牛脂肪组织功能和代谢健康的策略.
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