Immobilization of Enamel Matrix Derivate Protein onto Polypeptide Multilayers: Comparative in Situ Measurements using Ellipsometry, Quartz Crystal Microbalance with Dissipation, and Dual Polarization Interferometry
2006 (English)In: Langmuir, ISSN 0743-7463, E-ISSN 1520-5827, Vol. 22, no 26, 11065-11071 p.Article in journal (Refereed) Published
The buildup of biodegradable poly(L-glutamic acid) (PGA) and poly(L-lysine) (PLL) multilayers on silica and titanium surfaces and the immobilization of enamel matrix derivate (EMD) protein was followed by utilizing in situ ellipsometry, quartz crystal microbalance with dissipation, and dual-polarization interferometry (DPI). The use of the relatively new DPI technique validated earlier published ellipsometry measurements of the PLL-PGA polypeptide films. The hydrophobic aggregating EMD protein was successfully immobilized both on top of and within the multilayer structures at pH 5.0. DPI measurements further indicated that the immobilization of EMD is influenced by the flow pattern during adsorption. The formed polypeptide-EMD multilayer films are of interest since it is known that EMD is able to trigger cell response and induce biomineralization. The multilayer films thus have potential to be useful as bioactive and biodegradable coatings for future dental implants.
Place, publisher, year, edition, pages
2006. Vol. 22, no 26, 11065-11071 p.
Dual-polarization interferometry, Enamel matrix derivate proteins, Polypeptide multilayers, Quartz crystal microbalance
IdentifiersURN: urn:nbn:se:kth:diva-8922DOI: 10.1021/la0607712ISI: 000242771200035ScopusID: 2-s2.0-33846380249OAI: oai:DiVA.org:kth-8922DiVA: diva2:14408
QC 20100917. Uppdaterad från Manuskript till Artikel (20100917)2005-12-082005-12-082010-10-19Bibliographically approved