收缩性纤维细胞为分支的乳腺上皮形成了一个短暂的利基
Jakub Sumbal1,2,3,4, Robin P Journot1,3, Kriti Attri4
1Institut Curie, Laboratory of Genetics and Developmental Biology, INSERM U934, CNRS UMR3215, PSL University, Sorbonne University, Paris, France.
Nature communications
|September 29, 2025
概括
研究人员在正在发育的小鼠乳腺中发现了专门的收缩性纤维细胞. 这些细胞起源于前脂肪细胞,形成一个利基,在发育过程中支持上皮质分支.
科学领域:
- 发育生物学 发展生物学
- 细胞生物学 细胞生物学
- 连接组织研究 连接组织研究
背景情况:
- 纤维细胞是连接组织中关键的 stromal 细胞,对于器官发育,平衡和疾病至关重要.
- 最近的单细胞转录基因突出显示了器官内部和器官之间显著的纤维细胞异质性.
- 特定纤维细胞亚型的功能作用和血统起源,特别是乳腺,仍然在很大程度上是未知的.
研究的目的:
- 为了全面描述青春期小鼠乳腺纤维细胞的特征.
- 探索不同纤维细胞亚型的功能影响和血统关系.
- 研究纤维细胞在乳腺发育和上皮细胞形态发生中的作用.
主要方法:
- 单细胞RNA测序 (scRNA-seq) 用于转录基因分析.
- 空间映射以确定乳腺内的细胞定位.
- 功能测试和体内血统追踪以评估细胞行为和起源.
- 有机纤维细胞共同培养模型用于研究上皮层-层相互作用.
主要成果:
- 鉴定一个短暂的,特殊的收缩性纤维细胞的利基形成群体.
- 这些纤维细胞仅在生长的乳腺上皮的尖端周围局部化.
- 有证据表明,这些收缩性纤维细胞从脂肪层中周围的前脂肪细胞中招募.
- 纤维细胞群可以在直接的上皮接触时采用收缩特征,增强器官分支.
结论:
- 专门的乳腺纤维细胞及其血统历史的详细体内表征.
- 洞察乳腺发育中的纤维细胞的异质性和功能多样性.
- 这些专门的收缩性纤维细胞在建立乳腺形态发生的关键信号利基中的参与.
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