支流体细胞亚型的细胞外矩阵调节表型,并在体内促进支流体微环境
Andrew P Stone1,2, Emma Rand3, Gabriel Thornes3
1Department of Biology, York Biomedical Research Institute, University of York, York, UK. Andrewstone@brandeis.edu.
Stem cell research & therapy
|June 17, 2024
概括
骨髓 stromal 细胞 (BMSCs) 在形态和迁移方面表现出可塑性,受分泌蛋白质和细胞外基质 (ECM) 的影响. 特定的ECM蛋白质,如皮奥斯和亚格格兰,是维持干细胞表型和调节BMSC异质性的关键.
科学领域:
- 细胞生物学 细胞生物学
- 生物化学 生物化学
- 组织工程是组织工程.
背景情况:
- 骨髓 stromal 细胞 (BMSCs) 是异质的,影响它们在组织维护,造血和免疫控制中的作用.
- 驱动BMSC异质性的机制及其对环境的影响尚未完全理解.
- 这项研究调查了BMSC分泌物和细胞外基质 (ECM) 如何影响细胞表型.
研究的目的:
- 确定BMSC分泌和ECM对细胞表型的影响.
- 阐明特定ECM蛋白在BMSC异质性中的作用.
- 了解BMSC微环境的非细胞组件如何影响细胞行为.
主要方法:
- 利用了两个具有明显表型的不朽克隆BMSC线 (Y201,Y202).
- 使用无标签的定量相位成像用于细胞形态和迁移跟踪.
- 量化通过质谱测量分泌的因素,并通过免疫光检测证实蛋白质的存在.
主要成果:
- 从类似干细胞分泌的信号改变了非干细胞的形态和迁移.
- 与Y202.2相比,Y201 (茎状) 秘密体显示出明显更高的ECM蛋白质丰富度.
- 在Y201衍生的ECM上生长的Y202恢复了类似干细胞的形态和迁移,表明ECM缺陷是其表型的原因.
- 皮洛斯和亚格格兰在Y201分泌物中非常丰富,并且在骨表面发现,这表明它们在干细胞维护中的作用.
结论:
- BMSC的形态和迁移是可塑的,可以通过分泌的蛋白质进行修改,特别是来自多能干细胞的蛋白质.
- 特定的ECM蛋白对于协调细胞表型至关重要.
- BMSC微环境的非细胞组成部分提供了关于细胞异质性和BMSC在健康和疾病中的功能的见解.
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