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Title

Peptide-decorated chitosan derivatives enhance fibroblast adhesion and proliferation in wound healing

Authors
Hirt-Burri, N
Jeannerat, A
Applegate, L A
Ostafe, V
Published in Carbohydrate Polymers. 2016, vol. 142, p. 114-123
Abstract RGD peptide sequences are known to regulate cellular activities by interacting with α5β1, αvβ5 and αvβ3 integrin, which contributes to the wound healing process. In this study, RGDC peptide was immobilized onto chitosan derivative 1,6-diaminohexane-O-carboxymethyl-N,N,N-trimethyl chitosan (DAH-CMTMC) to display RGDC-promoting adhesion for enhanced wound healing. The efficiency of N-methylation, O-carboxymethylation and spacer grafting was quantitatively and qualitatively analyzed by (1)H NMR and FTIR, yielding 0.38 degree of substitution for N-methylation and >0.85 for O-carboxymethylation. The glass transition temperatures for chitosan derivatives were also studied. Peptide immobilization was achieved through sulfhydryl groups using sulfosuccinimidyl (4-iodoacetyl)amino-benzoate (sulfo-SIAB method). RGDC immobilized peptide onto DAH-CMTMC was found to be about 15.3 μg/mg of chitosan derivative by amino acid analysis (AAA). The significant increase of human dermal fibroblast (HDF) viability in vitro over 7 days suggests that RGDC-functionalized chitosan may lead to enhanced wound healing (viability >140%). Moreover, bio-adhesion and proliferation assays confirmed that coatings of RGDC-functionalized chitosan derivatives exhibit in vitro wound healing properties by enhancing fibroblast proliferation and adhesion. These results showed that RGDC peptide-functionalized chitosan provides an optimal environment for fibroblast adhesion and proliferation.
Keywords 1,6-Diaminohexane (PubChem CID: 16402)BioadhesionChitosan (PubChem CID: 21896651)Chitosan derivativesMigrationProliferationRGDC peptideSulfo-N-succinimidyl (N-Iodoacetyl)aminobenzoate (PubChem CID: 4131104)Wound healing
Identifiers
PMID: 26917381
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Structures
Research group Biopharmacie
Project NANOHEAL: Sciex-NMSch
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PATRULEA, Viorica et al. Peptide-decorated chitosan derivatives enhance fibroblast adhesion and proliferation in wound healing. In: Carbohydrate Polymers, 2016, vol. 142, p. 114-123. https://archive-ouverte.unige.ch/unige:101414

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Deposited on : 2018-01-16

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