Living microlens arrays.

Living microlens arrays.
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活体微透镜阵列。

DOI:
10.1002/cm.20302
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发表时间:
2008
影响因子:
--
通讯作者:
Crosby,AlfredJ
Crosby,AlfredJ
中科院分区:
--
文献类型:
--
作者:
Zimberlin,JessicaA;Wadsworth,Patricia;Crosby,AlfredJ

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单个细胞和细胞片都会对基底施加牵引力,并且已经使用多种方法对这些力进行了研究。在这里,我们使用新颖的表面几何形状比较成纤维细胞和上皮细胞的机械特性。将活细胞添加到附着在交联聚(二甲基硅氧烷)[PDMS]微孔基板上的聚苯乙烯[PS]薄膜中。附着在表面的细胞的收缩性质和 PDMS 表面几何形状的顺应性使 PS 薄膜弯曲,形成凸微透镜阵列。由此产生的微透镜曲率使我们能够确定生长的细胞片所施加的应变。我们报告说,单层上皮细胞比成纤维细胞对基质施加更大的压力,并将其归因于上皮的集体行为。通过随后向系统添加不同的化学触发器,细胞的收缩性质发生变化,从而改变微透镜的焦距。总之,这些发现证明了研究细胞片力学的重要性,并为先进材料引入了新的设计范式,为一系列应用提供了广阔的前景。细胞动力。细胞骨架 2008。© 2008 Wiley‐Liss, Inc.
Both individual cells and sheets of cells exert traction forces on the substrate and these forces have been investigated using a wide range of methods. Here we compare the mechanical properties of fibroblasts and epithelial cells using a novel surface geometry. Living cells are added to a thin film of polystyrene [PS] attached to a substrate of crosslinked poly(dimethyl siloxane) [PDMS] microwells. The contractile nature of the cells attached to the surface and the compliance of the PDMS surface geometry allows the PS thin film to buckle, forming arrays of convex microlenses. The resulting curvature of the microlenses allows us to determine the applied strain of growing cell sheets. We report that a monolayer of epithelial cells exerts more stress on the substrate than fibroblasts and attribute this to the collective behavior of the epithelium. By subsequently adding different chemical triggers to the system, the contractile nature of the cells changes, thus modifying the focal length of the microlenses. Together, these findings demonstrate the importance of studying the mechanics of cell sheets and also introduce a new design paradigm for advanced materials, offering great promise for a range of applications. Cell Motil. Cytoskeleton 2008. © 2008 Wiley‐Liss, Inc.
DOI: 10.1073/pnas.92.22.10252
发表时间: 1995-10-24
影响因子: 11.1
作者:
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通讯作者: ELSON, EL
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影响因子: 3.4
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影响因子: 4
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粘附和细胞骨架完整性对成纤维细胞牵引的影响。
DOI: --
发表时间: 1996
影响因子: --
作者:
O. Thoumine;A. Ott
通讯作者: A. Ott