Generation of controllable gradients in cell density.

Generation of controllable gradients in cell density.
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DOI:
10.1002/anie.201206060
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发表时间:
2013-01-02
影响因子:
16.6
通讯作者:
Xia, Younan
Xia, Younan
中科院分区:
化学1区
文献类型:
--
作者:
Liu, Wenying;Zhang, Yu;Thomopoulos, Stavros;Xia, Younan

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在工程支架上产生明确定义的细胞密度梯度的能力对于许多类型组织的再生至关重要。在本文中,我们描述了一种简单而通用的方法,用于在载玻片和电纺纳米纤维的非织造垫上产生细胞密度梯度。通过以倾斜角将载玻片(表面上没有或具有纳米纤维垫)插入细胞悬浮液中,由于可用于沉降的细胞数量的变化,可以在载玻片的顶面上建立细胞密度沿着插入方向的梯度。通过简单地改变倾斜角,可以容易地获得细胞密度的不同梯度。该方法也可以应用于在具有两种不同细胞类型的相同基底上产生反向梯度,这可能在界面组织工程中找到潜在的用途。
The ability to generate well-defined gradients in cell density on engineered scaffolds is critical to the regeneration of many types of tissues. Herein we describe a simple and versatile method for generating gradients in cell density on glass slides and nonwoven mats of electrospun nanofibers. By inserting a glass slide (without or with a mat of nanofibers on the surface) into a suspension of cells at a tilt angle, a gradient in cell density along the direction of insertion can be established on the top surface of the glass slide due to the variation in the number of cells available for sedimentation. Different gradients in cell density can be readily obtained by simply varying the tilt angle. This method can also be applied to generate reverse gradients on the same substrate with two different cell types, which may find potential use in interface tissue engineering.
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