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  • 1.
    Fürsatz, Marian
    et al.
    Department of Physics, Chemistry, and Biology, Linköping University, Linköping, Sweden.
    Skog, Mårten
    Department of Physics, Chemistry and Biology, Linkopings universitet, Linköping, Sweden.
    Sivlér, Petter
    Department of Physics, Chemistry and Biology, Linkopings universitet, Linköping, Sweden.
    Palm, Eleonor
    Örebro University, School of Medical Sciences.
    Aronsson, Christopher
    Department of Physics, Chemistry and Biology, Linkopings universitet, Linköping, Sweden.
    Skallberg, Andreas
    Department of Physics, Chemistry and Biology, Linkopings universitet, Linköping, Sweden.
    Greczynski, Grzegorz
    Department of Physics, Linköping University, Linkoping, Sweden.
    Khalaf, Hazem
    Örebro University, School of Medical Sciences.
    Bengtsson, Torbjörn
    Örebro University, School of Medical Sciences.
    Aili, Daniel
    Department of Physics, Chemistry and Biology, Linköping University, Linköping, Sweden.
    Functionalization of bacterial cellulose wound dressings with the antimicrobial peptide ε-poly-L-Lysine2018In: Biomedical Materials, ISSN 1748-6041, E-ISSN 1748-605X, Vol. 13, article id 025014Article in journal (Refereed)
    Abstract [en]

    Wound dressings based on bacterial cellulose (BC) can form a soft and conformable protective layer that can stimulate wound healing while preventing bacteria from entering the wound. Bacteria already present in the wound can, however, thrive in the moist environment created by the BC dressing which can aggravate the healing process. Possibilities to render the BC antimicrobial without affecting the beneficial structural and mechanical properties of the material would hence be highly attractive. Here we present methods for functionalization of BC with ε-Poly-L-Lysine (ε-PLL), a non-toxic biopolymer with broad-spectrum antimicrobial activity. Low molecular weight ε-PLL was cross-linked in pristine BC membranes and to carboxymethyl cellulose (CMC) functionalized BC using carbodiimide chemistry. The functionalization of BC with ε-PLL inhibited growth of S. epidermidis on the membranes but did not affect the cytocompatibility to cultured human fibroblasts as compared to native BC. The functionalization had no significant effects on the nanofibrous structure and mechanical properties of the BC. The possibility to functionalize BC with ε-PLL is a promising, green and versatile approach to improve the performance of BC in wound care and other biomedical applications.

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