Frizzled5通过组织染色质可访问性来控制小鼠肠上皮细胞的可塑性
Lu Deng1, Xi C He1, Shiyuan Chen1
1Stowers Institute for Medical Research, Kansas City, MO 64110, USA.
Developmental cell
|November 23, 2024
概括
Frizzled5 (Fzd5) 对肠上皮质可塑性和细胞命运至关重要. 它的删除会影响干细胞的自我更新和谱系的产生,突出显示它在维持肠道平衡中的作用.
科学领域:
- 胃肠病学 胃肠病学
- 发展生物学 发展生物学
- 分子生物学分子生物学
背景情况:
- 肠上皮质平衡取决于复杂的,鲜为人知的可塑性机制.
- Wnt信号通路对于肠道的发育和再生至关重要.
研究的目的:
- 调查Frizzled5 (Fzd5) 在小鼠肠道上皮细胞命运和可塑性中的作用.
- 阐明Fzd5影响干细胞和祖细胞的调节机制.
主要方法:
- 在特定的肠道细胞群 (Lgr5+,Krt19+) 中利用了Fzd5的遗传删除模型.
- 进行了集成的单细胞RNA测序 (scRNA-seq) 和单细胞ATAC-seq (scATAC-seq) 分析.
- 研究了Fzd5删除对密码完整性,干细胞自我更新和血统生成的影响.
主要成果:
- 在Lgr5+肠干细胞 (ISCs) 中Fzd5删除损害了自我更新.
- 在Krt19+细胞中Fzd5删除破坏了谱系的产生.
- 广泛的Fzd5删除导致了显著的密码恶化.
- Fzd5调节ISC和原生细胞中的染色质可访问性和基因表达.
结论:
- Frizzled5是肠上皮细胞命运和可塑性的关键决定因素.
- 通过调节ISC功能和血统发展,Fzd5在维持肠道平衡中发挥着至关重要的作用.
- 综合的多原子分析揭示了Fzd5控制染色质可访问性和基因表达的机制.
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