Overview
TB-500 is a synthetic version of the naturally occurring peptide Thymosin Beta-4, found in high concentrations at injury sites. It promotes actin regulation, cellular migration, and angiogenesis to accelerate tissue repair. TB-500 has been studied in equine and rodent models for its ability to heal tendons, heart tissue, skin wounds, and corneal injuries.
Mechanism of action
TB-500 sequesters G-actin monomers via its LKKTET actin-binding domain, regulating actin polymerization dynamics critical for cell migration and wound healing. It upregulates metalloproteinase MMP-2, promotes endothelial cell differentiation, and stimulates VEGF-mediated angiogenesis. Its anti-inflammatory effects are mediated via NF-κB pathway downregulation.
Selected literature
- [01]
Thymosin beta-4 and cardiac repair
Bock-Marquette I. et al. · Nature · 2004
Thymosin Beta-4 activated cardiac progenitor cells and significantly improved cardiac function after myocardial infarction in mouse models.
- [02]
Thymosin beta-4 promotes corneal wound healing
Sosne G. et al. · Experimental Eye Research · 2001
TB-4 accelerated corneal epithelial wound closure and reduced inflammatory infiltrate in multiple animal models.
- [03]
Anti-inflammatory mechanism of thymosin beta-4
Sosne G. et al. · Annals of the New York Academy of Sciences · 2007
TB-4 suppressed NF-κB signaling and reduced pro-inflammatory cytokine expression in corneal and systemic inflammatory models.
The information on this page is summarized from the published research literature and is provided for reference and educational purposes only. It is not medical advice and should not be used to guide treatment decisions. Our peptides are sold for in-vitro research and laboratory use only.