使用Flexcell张力系统对肺部疾病机制进行动态机械刺激
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Updated: May 30, 2026

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Mechanical Stimulation of Stem Cells Using Cyclic Uniaxial Strain
Published on: July 29, 2007
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Safiya Al Yazeedi1, Tony Ju Feng Guo1,2, Joban Sohd1
1Department of Biology, University of British Columbia - Okanagan Campus, Kelowna, BC, Canada.
Frontiers in medicine
|September 3, 2025
概括
肺部模型中的机械应变会增加细胞数量和炎症. 三维模型可以更好地复制肺组织,
科学领域:
- 生物医学工程
- 细胞生物学
- 肺部医学
背景情况:
- 肺部病理生理学受到机械应变的重大影响.
- 现有的二维体外模型无法充分捕捉肺部的动态机械环境.
- 需要先进的多细胞模型来研究压力诱导的肺反应.
研究的目的:
- 开发和评估机械压力2D和3D气膜共培和器官模型.
- 研究机械应变对这些模型中的细胞反应的影响.
- 评估这些模型对研究肺部疾病机制的有用性.
主要方法:
- 使用人类A549上皮细胞和MRC-5纤维细胞开发了2D和3D气膜共培和器官.
- 使用Flexcell细胞伸展生物反应器进行机械应变 (18%的振幅,24小时0.4赫兹).
- 评估了细胞增殖,形态,细胞骨和紧接点蛋白质表达,细胞因子释放 (IL-6,IL-8) 和细胞死亡.
主要成果:
- 机械应变显著增加了3D共同培养中的细胞数量,表明增强了增殖.
- 在3D培养中诱导纤维细胞的形态变化和F-actin表达的增加.
- 在不同模型中,特别是3D培养中,观察到区域性阻塞-1表达的减少,IL-6和IL-8释放的增加以及细胞死亡的增加.
结论:
- 使用Flexcell系统的机械应变的体外多细胞膜模型可以模拟体内肺组织动态.
- 这些模型为研究肺炎和纤维化相关的应变诱导细胞反应提供了宝贵的平台.
- 这些模型对于探索表皮细胞与介质细胞相互作用的疾病进展特别有用.
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