Molecular study of wound healing after using biosynthesized BNC/FeO nanocomposites assisted with a bioinformatics approach.

Background: Molecular investigation of wound healing has allowed better understanding about interaction of genes and pathways involved in healing progression.

Objectives: The aim of this study was to prepare magnetic/bacterial nanocellulose (FeO/BNC) nanocomposite films as ecofriendly wound dressing in order to evaluate their physical, cytotoxicity and antimicrobial properties. The molecular study was carried out to evaluate expression of genes involved in healing of wounds after treatment with BNC/FeO films.

Study Design Materials And Methods: Magnetic nanoparticles were biosynthesized by using extract in new isolated bacterial nanocellulose (BNC) RM1. The nanocomposites were characterized using X-ray diffraction, Fourier transform infrared, and field emission scanning electron microscopy. Moreover, swelling property and metal ions release profile of the nanocomposites were investigated. The ability of nanocomposites to promote wound healing of human dermal fibroblast cells in vitro was examined. Bioinformatics databases were used to identify genes with important healing effect. Key genes which interfered with healing were studied by quantitative real time PCR.

Results: Spherical magnetic nanoparticles (15-30 nm) were formed and immobilized within the structure of BNC. The BNC/FeO was nontoxic (IC>500 μg/mL) with excellent wound healing efficiency after 48 hours. The nanocomposites showed good antibacterial activity ranging from 6±0.2 to 13.40±0.10 mm against , and . The effective genes for the wound healing process were , , , , , , and with time dependent manner. BNC/FeO has an effect on microRNA by reducing its expression and therefore causing an increase in the gene expression of other genes, which consequently resulted in wound healing.

Conclusion: This eco-friendly nanocomposite with excellent healing properties can be used as an effective wound dressing for treatment of cutaneous wounds.