Control of cell nucleus shapes via micropillar patterns

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• 作者：Zhen  ; Pan ; Ce  ; Yan ; Rong  ; Peng ; Yingchun  ; Zhao ; Yao  ; He ; Jiandong  ; Ding  ; ;   ; ^{jdding1@fudan.edu.cn}
• 关键词：Polymeric materials ; Surface Micropatterning ; Cell nucleus ; Stem cells
• 刊名：Biomaterials
• 出版年：2012
• 出版时间：February 2012
• 年：2012
• 卷：33
• 期：6
• 页码：1730-1735
• 全文大小：1246 K

文摘

We herein report a material technique to control the shapes of cell nuclei by the design of the microtopography of substrates to which the cells adhere. Poly(d,l-lactide-co-glycolide) (PLGA) micropillars or micropits of a series of height or depth were fabricated, and some surprising self deformation of the nuclei of bone marrow stromal cells (BMSCs) was found in the case of micropillars with a sufficient height. Despite severe nucleus deformation, BMSCs kept the ability of proliferation and differentiation. We further demonstrated that the shapes of cell nuclei could be regulated by the appropriate micropillar patterns. Besides circular and elliptoid shapes, some unusual nucleus shapes of BMSCs have been achieved, such as square, cross, dumbbell, and asymmetric sphere-protrusion.