编码ASP的基因FBN1通过重新编程脂肪细胞的分化,使其转向热生成,从而调节逊尼派绵羊的寒冷适应
Fanhua Meng1,2,3,4, Yanyun Zi1,2,3, Cong Han5
1College of Life Science, Inner Mongolia Agricultural University, Hohhot 010018, China.
Cells
|February 26, 2026
概括
逊尼派羊通过改变脂肪代谢来适应寒冷. 冬季降低的Profibrillin-1 (pFBN1) 降低了脂肪生成,并促进了绵羊脂肪衍生介质干细胞 (ADMSCs) 的热生成.
科学领域:
- 动物生理学 动物生理学
- 代谢生物化学 代谢生物化学
- 脂肪组织生物学 脂肪组织生物学
背景情况:
- 逊尼派羊表现出了显著的代谢灵活性,这对于在蒙古草原的生存至关重要.
- 脂肪组织在能量恒温中发挥着关键作用,在绵羊中观察到季节性变化.
- 亚斯素 (ASP) 影响脂质合成和热生成,其前体益布林林-1 (pFBN1) 的水平因季节性变化而变化.
研究的目的:
- 研究ASP编码基因纤维素-1 (FBN1) 在季节性适应中的作用.
- 通过ASP验证了降低pFBN1水平通过ASP驱动适应性热生成的假设.
- 阐明FBN1下调对ADMSCs脂肪生成和热生成的影响.
主要方法:
- 羊头皮脂肪的蛋白质组学分析,以确定差异表达蛋白 (DEP).
- 在绵羊脂肪基衍生介质干细胞 (ADMSC) 中对FBN1的功能验证.
- 在ADMSC中使用miR-29b-1过度表达的FBN1的特定下调.
主要成果:
- 在冬季绵羊脂肪组织中,FBN1显著下调.
- 在ADMSC中FBN1下调抑制了脂肪生成,减少了脂质滴积累和甘油三水平.
- 减少FBN1表达增强了分化脂肪细胞中的热生成,增加了UCP1和NEFA水平.
结论:
- 季节性下调FBN1有助于苏尼特羊的适应性热生成.
- FBN1在调节绵羊ADMSC的脂肪生成和发热能力方面发挥着至关重要的作用.
- FBN1-ASP通路是调节牲畜能量代谢的潜在目标.
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