通过准Ptrf的远端增强剂来改变脂肪质量
Yu Zhang1, Keren Long2,3, Songling Zhang1
1State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China.
BMC biology
|October 1, 2025
概括
准聚合酶I和转录释放因子 (PTRF) 增强剂可以减少脂肪质量. 修改PTRF cis调节元件为管理身体脂肪和脂肪细胞大小提供了一种新的策略.
科学领域:
- 代谢调节 代谢调节 代谢调节
- 脂肪组织生物学 脂肪组织生物学
- 基因规则 基因规则
背景情况:
- 脂肪组织对于全身代谢调节至关重要.
- 聚合酶I和转录释放因子 (PTRF) 对于洞穴形成和脂质代谢至关重要.
研究的目的:
- 通过准PTRF增强剂来研究修改脂肪质量.
- 阐明PTRF在脂肪生成中的作用及其调节网络.
主要方法:
- 在Ptrf淘汰赛小鼠中进行单核转录基因分析.
- 循环染色体构造捕获测序和ChIP-seq用于识别PTRF增强剂.
- 在细胞系和小鼠中,双化酶记者测定和基于CRISPR的表观遗传扰乱 (dCas9-KRAB).
主要成果:
- Ptrf淘汰赛减少了脂肪质量,损害了脂肪生成,改变了脂肪细胞代谢.
- 确定了六种候选PTRF增强剂,其中E1,E3和E5显示了转录活性.
- 增强剂的表观遗传抑制在体外和体内减少了Ptrf表达,脂质滴和甘油三含量,降低了体重和脂肪细胞直径.
结论:
- 确定了导致脂肪质量减少的Ptrf删除机制.
- 针对脂肪生成基因的cis-regulatory元素,如PTRF,可以减少脂肪质量.
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