Initial cell adhesion of three cell types in the presence and absence of serum proteins

Initial cell adhesion of three cell types in the presence and absence of serum proteins With the development of a wide range of new biomaterials for the sensing of different cell behaviour, it is important to consider whether the cells tested in vitro are in direct contact with the material or whether cell–biomaterial contact is mediated by an interfacial layer of proteins originating from the culture medium or from the cells themselves. Thus, this study describes the differences between the cell adhesion mediated by proteins originating from foetal bovine serum and without the presence of such proteins 2 h following cell seeding exemplarily with different cell types (an osteoblastic cell line, primary fibroblasts, and mesenchymal stem cells). Three of the examined cell types were found to react differently to differing conditions in terms of cell shape, area, and number. Nevertheless, the expression and localization of the various proteins involved in cell adhesion and signalling (CD44, vinculin, talin, actin, focal adhesion kinase, Rho-GTPases and extracellular signal-regulated kinases 1 and 2) were, in general, similar with respect to all the cell types tested, albeit varying according to the presence or absence of serum. Moreover, no classical focal adhesions were formed during cell adhesion without serum proteins, while different signalling pathways were involved in this process. The study systematically describes and discusses the cell adhesion of three different human cell types to a well-known substrate without the presence of external proteins and it is hoped that this knowledge will be subsequently applied in biomaterial applications in which the presence of external proteins is undesirable (e.g. for biosensing purposes). Histochemistry and Cell Biology Springer Journals

Initial cell adhesion of three cell types in the presence and absence of serum proteins

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Springer Berlin Heidelberg
Copyright © 2017 by Springer-Verlag Berlin Heidelberg
Biomedicine; Biomedicine, general; Cell Biology; Biochemistry, general; Developmental Biology
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