生物材料表面蛋白质微图形对人体软骨细胞形态及蛋白表达的影响
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国家自然科学基金资助项目(30900294)


Effects of Protein Micropatterns of Biomaterials Surfaces on Human Chondrocytes Morphology and Protein Expression
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This work was supported by a grant from The National Natural Science Fundation of China (30900294)

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    摘要:

    主要研究采用微接触印刷术在生物材料表面制备的细胞外基质蛋白微图形对人体软骨细胞粘附、铺展以及蛋白质表达等细胞行为的影响.研究结果表明,蛋白质微图形表面对细胞的粘附、铺展、排列以及细胞蛋白质表达具有明显的影响.细胞优先粘附在微图形蛋白区域,微图形形状以及尺度明显影响细胞的粘附形态以及铺展程度,同时也影响细胞生长过程中的Ⅱ型与Ⅵ型胶原蛋白的表达,细胞的铺展行为与细胞的蛋白质表达具有一定的正相关性,铺展较好的细胞表现出更好的Ⅱ型与Ⅵ型胶原蛋白表达.结果表明,通过在材料表面制备细胞外基质蛋白微图形可以有效调控人体软骨细胞的生长行为与功能.

    Abstract:

    In order to study the effects of extracellular matrix (ECM) protein micropatterns on biomaterials surfaces fabricated by microcontact printing (μCP) on human chondrocytes adhesion, spread and protein expression, the bone morphogenetic protein 2 (BMP-2) was printed onto polystyrene (PS) surface to fabricate the ECM protein micropatterns by μCP. Three kinds of excellent micropattern were obtained successfully according to the fluorescent images. The human chondrocytes were seeded on PS (control samples), BMP-2 coated PS surface and PS surface with BMP-2 micropatterns, respectively. As compared with control samples, the human chondrocytes on BMP-2 coating exhibited better growth and spread behavior, at the same time, the BMP-2 coating also cannot promote expression of collagenⅡ and Ⅵ. On the other side, the results concerning BMP-2 micropattens indicated that the protein micropattern surfaces have significant influence on cell adhesion, spread, alignment and functions. The cells preferentially adhered on micropattern protein zones. The micropattern shape and its sizes affected not only the cell adhesion morphology and spread degree but also the typeⅡ and Ⅵ collagen expression. The spread behavior of cell has some positive connections with protein expression and the cell with more spread expressed more typeⅡ and Ⅵ collagen. These results suggested that the ECM protein micropatterns can effectively regulate human chondrocytes growth and functions.

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潘长江,董云肖,聂煜东,王远亮.生物材料表面蛋白质微图形对人体软骨细胞形态及蛋白表达的影响[J].生物化学与生物物理进展,2010,37(12):1296-1302

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历史
  • 收稿日期:2010-06-14
  • 最后修改日期:2010-08-29
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  • 在线发布日期: 2010-09-21
  • 出版日期: 2010-12-20