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Issue title: 2nd International Conference on New Biomedical Materials, 5–8 April 2003, Cardiff, Wales, UK
Article type: Research Article
Authors: Scholtmeijer, K.; | Janssen, M.I. | van Leeuwen, M.B.M | van Kooten, T.G. | Hektor, H. | Wösten, H.A.B.
Affiliations: BiOMaDe Technology Foundation, Nijenborgh 4, 9747 AG, Groningen, The Netherlands | Groningen Biotechnology and Biomolecular Sciences Institute, Kerklaan 30, 9751 NN Haren, The Netherlands | Department of Biomedical Engineering, Antonius Deusinglaan 1, 9713 AV, Groningen, The Netherlands | Microbiology, University of Utrecht, Padualaan 8, 3584 CH, Utrecht, The Netherlands
Note: [] Corresponding author: K. Scholtmeijer, BiOMaDe Technology Foundation, Nijenborgh 4, 9747 AG, Groningen, The Netherlands. Tel.: +31 50 3634554; Fax: +31 50 3632249; E‐mail: Scholtmeijer@biomade.nl.
Abstract: The physiochemical nature of surfaces can be changed by small proteins which are secreted by filamentous fungi. These proteins, called hydrophobins, are characterized by the presence of eight conserved cysteine residues and a typical hydropathy pattern. Upon contact with a hydrophilic–hydrophobic interface they self‐assemble into highly insoluble amphipathic membranes. As a result, hydrophobic surfaces become hydrophilic and vice versa. Genetic engineering of hydrophobins was used to study structure–function relationships. In addition, engineered hydrophobins were constructed to increase the biocompatibility of surfaces. The glycosylated N‐terminal region of the mature SC3 hydrophobin was deleted and the cell‐binding domain of human fibronectin was introduced at the N‐terminus. The gross properties of the hydrophobins were not affected. However, the physiochemical properties of the hydrophilic side of the assembled protein did change. Growth of fibroblasts on Teflon could be improved by coating the solid with the engineered hydrophobins. Thus, by changing the N‐terminal part of hydrophobins, the physiochemical nature of the hydrophilic side of the assembled form can be altered and a variety of new functionalities introduced. The fact that hydrophobins self‐assemble at any hydrophilic–hydrophobic interface, irrespective of the chemical nature of the surface, therefore provides a generic approach to modify surfaces and make them interesting candidates for the use in various technical and medical applications.
Keywords: , Biocompatibility, genetic engineering, hydrophobin, surface modification
Journal: Bio-Medical Materials and Engineering, vol. 14, no. 4, pp. 447-454, 2004
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