Preparation of recombinant type I collagen (PF-I-80) and its functional characterization and biomedical applications in wound healing.

This study evaluates the potential applications of recombinant PF-I-80 protein in regenerative medicine and the treatment of inflammatory diseases, focusing on its effects on cell migration, differentiation, and anti-inflammatory properties. Various in vitro assays were conducted, including scratch assays, Transwell experiments, RT-PCR and Western Blot to analyze gene and protein expression related to differentiation and inflammation, and immunofluorescence staining to observe cellular changes. The results indicated that PF-I-80 significantly promoted cell migration, highlighting its potential in tissue repair and regeneration. It also enhanced cell differentiation, demonstrating its applicability in tissue repair, and showed significant anti-inflammatory effects by reducing the expression of pro-inflammatory cytokines. In animal models, PF-I-80 notably reduced levels of inflammatory factors IL-1β and TNF-α, shortened the inflammatory phase, and accelerated wound healing. Additionally, PF-I-80 increased FGF-2 levels, which promoted the proliferation of endothelial and fibroblast cells and enhanced collagen synthesis. These in vitro and in vivo findings position PF-I-80 as a promising biomaterial for applications in regenerative medicine and inflammatory disease treatment.