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A fibronectin mimetic motif improves integrin mediated cell biding to recombinant spider silk matrices
KTH, School of Biotechnology (BIO), Protein Technology.ORCID iD: 0000-0001-7153-8527
KTH, School of Biotechnology (BIO), Protein Technology.
KTH, School of Biotechnology (BIO), Protein Technology.ORCID iD: 0000-0003-0140-419X
2016 (English)In: Biomaterials, ISSN 0142-9612, E-ISSN 1878-5905, Vol. 74, 256-266 p.Article in journal (Refereed) Published
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Abstract [en]

The cell binding motif RGD is the most widely used peptide to improve cell binding properties of various biomaterials, including recombinant spider silk. In this paper we use genetic engineering to further enhance the cell supportive capacity of spider silk by presenting the RGD motif as a turn loop, similar to the one found in fibronectin (FN), but in the silk stabilized by cysteines, and therefore denoted FNCC. Human primary cells cultured on FNCC-silk showed increased attachment, spreading, stress fiber formation and focal adhesions, not only compared to RGD-silk, but also to silk fused with linear controls of the RGD containing motif from fibronectin. Cell binding to FNCC-silk was shown to involve the alpha 5 beta 1 integrin, and to support proliferation and migration of keratinocytes. The FNCC-silk protein allowed efficient assembly, and could even be transformed into free standing films, on which keratinocytes could readily form a monolayer culture. The results hold promise for future applications within tissue engineering.

Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 74, 256-266 p.
Keyword [en]
RGD, Cell adhesion, Disulphide bridged loop, Wound healing
National Category
Bio Materials
Identifiers
URN: urn:nbn:se:kth:diva-180205DOI: 10.1016/j.biomaterials.2015.10.013ISI: 000364610800022PubMedID: 26461118Scopus ID: 2-s2.0-84945162199OAI: oai:DiVA.org:kth-180205DiVA: diva2:895932
Note

QC 20160120

Available from: 2016-01-20 Created: 2016-01-08 Last updated: 2016-01-20Bibliographically approved

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CiteExportLink to record
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