Directing cell migration in continuous microchannels by topographical amplification of natural directional persistence.

Directing cell migration in continuous microchannels by topographical amplification of natural directional persistence.
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DOI:
10.1016/j.biomaterials.2012.09.071
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发表时间:
2013-01
期刊:
影响因子:
14
通讯作者:
Ho, Chia-Chi
Ho, Chia-Chi
中科院分区:
工程技术1区
文献类型:
--
作者:
Ko, Young-Gwang;Co, Carlos C.;Ho, Chia-Chi

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Discrete micropatterns on biomaterial surfaces can be used to guide the direction of mammalian cell movement by orienting cell morphology. However, guiding cell assembly in three-dimensional scaffolds remains a challenge. Here we demonstrate that the random motions of motile cells can be rectified within continuous microchannels without chemotactic gradients or fluid flow. Our results show that uniform width microchannels with an overhanging zigzag design can induce polarization of NIH3T3 fibroblasts and human umbilical vein endothelial cells by expanding the cell front at each turn. These continuous zigzag microchannels can guide the direction of cell movement even for cells with altered intracellular signals that promote random movement. This approach for directing cell migration within microchannels has important potential implications in the design of scaffolds for tissue engineering.
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