Biocomposites of copper-containing mesoporous bioactive glass and nanofibrillated cellulose: Biocompatibility and angiogenic promotion in chronic wound healing application

A1 Journal article (refereed)


Internal Authors/Editors


Publication Details

List of Authors: Xiaoju Wang, Fang Cheng, Jun Liu, Jan-Henrik Smått, David Gepperth, Mika Lastusaari, Chunlin Xu, Leena Hupa
Publisher: Elsevier
Publication year: 2016
Journal: Acta Biomaterialia
Volume number: 46
Start page: 286
End page: 298
eISSN: 1878-7568


Abstract

Biocomposites of copper-containing mesoporous bioactive glass (Cu-MBG) and nanofibrillated cellulose (NFC) were designated as potential dressing material for chronic wound healing. The phase composition and mesoporous micro-structure of the synthesized Cu-MBGs were elaborately characterized by combining several techniques, including TEM, SEM, XRD, SXAS and N2 physisorption. High bioactivity of the Cu-MBG was confirmed in stimulated body fluids in vitro. A controlled dissolution of Cu from the glass suggests Cu-MBG a suitable source for Cu release in wound healing dressings. Depending on the content of Cu-MBG in the composite formulation, the composites were fabricated as membranes and aerogels. In biocompatibility assessment of the composites, a dose-dependent cytotoxicity of Cu2+ on 3T3 fibroblasts was found. Importantly, a critical biological level of Cu2+ below 10mg/L was suggested for the survival and growth of 3T3 fibroblasts. The Cu2+ released from the composite aerogel of NFC and Cu-MBG showed a profound angiogenic effect in the 3D spheroid culture system of human umbilical vein endothelial cells. Moreover, the angiogenic gene expression of 3T3 fibroblast was upregulated in the real-time quantitative PCR analysis, which also confirms that the incorporation of Cu-MBG into NFC matrix enhances the proangiogenic potential of the biocomposites. In addition, composites of NFC and Cu-MBG also showed an inhibiting effect on the growth of E. coli.

Last updated on 2019-13-12 at 04:20