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Updated: Sep 15, 2025

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一个纤维细胞状态编排了一种依赖于YAP的表皮细胞再生程序,通过ECM介导的机械传导对 (前) 恶性瘤至关重要
bioRxiv : the preprint server for biology
|July 17, 2025
概括
慢性肺损伤会触发一种亲瘤原生纤维细胞状态 (STIF),从而导致转化成形和发育不良. 抑制这种压力/张力指导性纤维细胞信号传递可以预防或逆转这些癌前变化,提供新的预防策略.
科学领域:
- 细胞生物学 细胞生物学
- 在瘤学瘤学.
- 组织工程是组织工程.
背景情况:
- 慢性肺损伤可能导致转质形成,这是状张症和肺癌的前体.
- 破坏组织平衡在恶性发作和进展中起作用.
研究的目的:
- 鉴定组织恒温的破坏有助于恶性发作和进展的机制.
- 调查纤维细胞和上皮细胞在受伤诱导的转化成形和发育不良中的作用.
主要方法:
- 用于人体支气管上皮细胞 (hBEC) 和纤维细胞的体内和体外异型重组模型.
- 分析了TGF-β信号传递,HSP47上调,原积累和机械信号传递路径.
- 在hBEC中调查了依赖于YAP的活动.
主要成果:
- 与受伤相关的TGF-β信号会诱导一种压力/张力指导性纤维细胞 (STIF) 状态,其特征是HSP47上调和原积累.
- 这种STIF状态增加了组织硬性,激活了YAP依赖的,邻近的hBEC中的亲恶性活动.
- STIF足以将正常的hBECs重新编程为转质形成,并将瘤抑制功能受损的hBECs驱动为发育不良,但这一过程是可逆的.
结论:
- 具有增强力传递特征的STIF状态足以激活类似于癌基因介导转换的表皮表型,并诱导 (前) 恶性.
- 单独通过纤维细胞起作用的STIF信号,可以通过机械传导诱导甲基形成,并通过机械传导在上皮细胞中编程癌前表型.
- 抑制STIF活动或机械信号可以预防或逆转转质形成,并阻止转变为发育不良的进展,识别新的治疗点.
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