通过明显的脂肪组织储存来进行对蛋白信号传递调节纤维细胞机械生物学和功能异质性
Yujun Xu1, Niyousha Karbasion1, Tata A Toure2
1Department of Mechanical Engineering & Materials Science, Washington University in St. Louis, St. Louis, MO 63130 USA.
Cellular and molecular bioengineering
|November 4, 2025
概括
不同的脂肪储存 (棕色,白色,色) 独特地影响纤维细胞的行为,影响组织重塑和纤维化. 了解这些脂肪纤维细胞相互作用可以揭示纤维细胞疾病的新治疗点.
科学领域:
- 脂肪组织生物学 脂肪组织生物学
- 细胞机械生物学 细胞机械生物学
- 纤维化研究纤维化.
背景情况:
- 脂肪组织通过内分泌功能来调节平衡.
- 脂肪库特定的分泌体影响纤维细胞命运和纤维细胞重塑.
- 我们对脂肪储存表型如何影响纤维细胞机械生物学的理解有限.
研究的目的:
- 研究棕色 (BAT),白色 (WAT) 和色脂肪组织 (T-PVAT,A-PVAT) 如何控制纤维细胞到肌纤维细胞过渡 (FMT).
- 阐明在调节纤维细胞机械生物学中的特定存储点膜信号传递的作用.
- 确定脂肪分泌体如何影响纤维细胞增殖,迁移和矩阵重塑.
主要方法:
- 集成的秘密基因组概况与功能和机械生物学测试.
- 使用一个受控的脂肪纤维细胞共培平台.
- 与标准的BAT,WAT和色脂肪组织进行比较 (T-PVAT,A-PVAT).
主要成果:
- 发热储存 (BAT,T-PVAT) 增强了纤维细胞的增殖,原沉积和性.
- 脂质储存库 (WAT,A-PVAT) 促进了纤维细胞迁移和矩阵降解.
- T-PVAT表现出独特的RAGE-DPP4信号,导致过度的纤维细胞激活和硬化,这被DPP4抑制减弱.
结论:
- 脂肪储存是纤维细胞表型的明显调节者,影响纤维细胞重塑.
- 脂肪驱动的 stromal 交叉可以减轻纤维化重塑和相关的并发症.
- 这些发现突显了针对脂肪纤维细胞相互作用的治疗益处的潜力.
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