Mechanism of regulation of stem cell differentiation by matrix stiffness.

Mechanism of regulation of stem cell differentiation by matrix stiffness.
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基质硬度调节干细胞分化的机制

DOI:
10.1186/s13287-015-0083-4
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发表时间:
2015-05-27
影响因子:
7.5
通讯作者:
Li Y
Li Y
中科院分区:
医学2区
文献类型:
--
作者:
Lv H;Li L;Sun M;Zhang Y;Chen L;Rong Y;Li Y

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干细胞的行为受到多种微环境信号的调节。作为一种外部信号,细胞外基质的机械硬度能够决定干细胞的命运,但这种生物物理信号如何转化为细胞内信号仍然难以捉摸。在这里,我们阐明了干细胞通过细胞骨架网络的动力学响应微环境僵硬的机制,从而在二维培养中通过生物物理转导信号通路导致基因表达的变化。此外,还指出了在生理上更相关的三维培养中,从最初的机械传感向基于Novocell衍生的基质传感的假定快速转变。全面了解干细胞对这种刺激的反应对于设计模拟生理环境的生物材料和推进组织工程中基于干细胞的临床应用至关重要。
Stem cell behaviors are regulated by multiple microenvironmental cues. As an external signal, mechanical stiffness of the extracellular matrix is capable of governing stem cell fate determination, but how this biophysical cue is translated into intracellular signaling remains elusive. Here, we elucidate mechanisms by which stem cells respond to microenvironmental stiffness through the dynamics of the cytoskeletal network, leading to changes in gene expression via biophysical transduction signaling pathways in two-dimensional culture. Furthermore, a putative rapid shift from original mechanosensing tode novocell-derived matrix sensing in more physiologically relevant three-dimensional culture is pointed out. A comprehensive understanding of stem cell responses to this stimulus is essential for designing biomaterials that mimic the physiological environment and advancing stem cell-based clinical applications for tissue engineering.
DOI: 10.1101/cshperspect.a005033
发表时间: 2011-05-01
影响因子: 7.2
作者:
Geiger B;Yamada KM
通讯作者: Yamada KM
DOI: 10.1126/science.1235038
发表时间: 2013-05-17
期刊: SCIENCE
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发表时间: 2011-11-01
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发表时间: 2009-11-27
期刊: Science (New York, N.Y.)
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