PMID: 2713433Jan 1, 1989Paper

Kinetics of cell spreading on protein precoated substrata: a study of interfacial aspects

Biomaterials
J M SchakenraadC R Wildevuur

Abstract

In this paper, interfacial aspects of spreading and adhesion of human skin fibroblasts on solid substrata after protein precoating have been studied. Three solid substrata were used with different surface free energy (gamma s): Tissue Culture Polystyrene (TCPS) with gamma s = 70 erg.cm-2, Polyvinylfluoride (PVF) with gamma s = 56 erg.cm-2 and Fluoroethylenepropylene (FEP) copolymer with gamma s = 18 erg.cm-2. The substrata were precoated with fetal calf serum, bovine fibronectin or bovine serum albumin. Cell spreading was evaluated by means of light microscopy and scanning electron microscopy (SEM). Adhesion sites were studied by transmission electron microscopy (TEM). In general, spreading was lowest on FEP and highest on TCPS. Although protein precoating markedly increased cell spreading, the relative order in which the cells spread on the protein precoated substrata remained identical to that on the bare substrata. Analysis of the kinetics of spreading demonstrated that spreading was fastest on the high-energy substratum and slowest on the low-energy substratum. In the presence of all three types of protein precoating, the average distance between a cell and a substratum after spreading was smaller (20-50 nm) than without a ...Continue Reading

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