Forward Wound Closure with Regenerated Silk Fibroin and Polylysine-Modified Chitosan Composite Bioadhesives as Dressings.
Ruofan WangJiangying ZhuGuohua JiangYanfang SunLiming RuanPengfei LiHaiyan CuiPublished in: ACS applied bio materials (2020)
Wound dressing has been used for decades to be effective for accelerating skin wound healing. However, practical applications are still limited due to their lower cell affinity, tissue adhesiveness, and biocompatibility. Natural polymers are the important biomaterials because of their excellent biodegradability, biocompatibility, and low immunogenicity. In this work, the composite bioadhesives (PLS-CS/RSF) were prepared from regenerated silk fibroin (RSF) and polylysine-modified chitosan (PLS-CS) that were cross-linked by Ca 2+ ions. The adhesion property tests showed that the PLS-CS/RSF exhibited excellent bonding potentials for various substrates, and the adhesive strength was up to 70 kPa for isolated porcine skin by the extension test. The as-prepared PLS-CS/RSF was nontoxic, displayed obvious antibacterial effects against Staphylococcus aureus and Escherichia coli in vitro , and their bacteriostasis rates were 100% after 120 min treatment. In addition, the PLS-CS/RSF exhibited favorable cytocompatibility by cell counting kit-8 assay. The animal model of wound closure results showed that PLS-CS/RSF can promote wound closure and the integrity of wound healing, inhibiting the secretion of inflammatory factor and tumor necrosis factor and stimulating vascular factor and α-smooth muscle actin to the release of vascular growth factor and promote angiogenesis during the process of wound healing by immunohistochemical assay.
Keyphrases
- wound healing
- growth factor
- smooth muscle
- tissue engineering
- escherichia coli
- staphylococcus aureus
- single cell
- high throughput
- cell therapy
- biofilm formation
- oxidative stress
- signaling pathway
- quantum dots
- drug delivery
- cell migration
- cystic fibrosis
- bone marrow
- mass spectrometry
- combination therapy
- klebsiella pneumoniae
- cell adhesion
- replacement therapy