Modification of surfaces with cell adhesion peptides alters extracellular matrix deposition

被引:166
作者
Mann, BK [1 ]
Tsai, AT [1 ]
Scott-Burden, T [1 ]
West, JL [1 ]
机构
[1] Rice Univ, Dept Bioengn, Houston, TX 77285 USA
关键词
ECM; TGF-beta; surface modification; SMC; endothelium;
D O I
10.1016/S0142-9612(99)00158-1
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
The goal of the current study was to evaluate matrix protein synthesis by cells cultured on materials that had been modified with cell adhesion ligands. We examined the effects of surface peptide density and of peptides with different affinities on the extracellular matrix production of smooth muscle cells, endothelial cells and fibroblasts. While initial adhesion was greatest on the higher density peptide surfaces, all cell types exhibited decreased matrix production on the more highly adhesive surfaces. Similarly, when different peptides were evaluated, matrix production was the lowest on the most adhesive surface and highest on the least adhesive surface. These results suggest that extracellular matrix synthesis may be regulated, to some extent, by signal transduction initiated by adhesion events. This may pose limitations for use of bioactive materials as tissue engineering scaffolds, as matrix production is an important aspect of tissue formation. However, it may be possible to increase matrix production on highly adhesive surfaces using exogenous factors. TGF-beta was shown to increase matrix production by both smooth muscle cells and endothelia cells. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:2281 / 2286
页数:6
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