TB-500 Overview

TB-500 is a synthetic peptide fragment derived from thymosin beta-4, a naturally occurring protein studied for its role in cellular repair and regeneration. Research has focused on its potential influence on tissue remodeling, angiogenesis, and cellular migration in preclinical and laboratory models. TB-500 is of particular interest in investigations involving connective tissue, muscle recovery, and wound repair pathways.

Goldstein A.L. et al. (2005). 

History

Thymosin beta-4 (TB4), the parent protein of TB-500, was first isolated in the 1960s during studies of thymus-derived peptides and their role in immune and regenerative biology. TB-500 was synthesized as a research analog to enable focused study on TB4’s tissue repair functions. Since its development, it has been investigated across models of angiogenesis, muscle regeneration, and cellular migration, with growing interest in its systemic regulatory potential.

Goldstein A.L., Hannappel E. et al. (2012).

TB-500 Structure

CAS #: 885340-08-9

Molecular Formula: C₂₁₂H₃₅₀N₅₆O₇₈S

Molecular Weight: 4963.5 g/mol

PubChem ID: 16132321

Research Findings

TB-500 has been studied in structural, vascular, dermatological, and systemic models, with research exploring its roles in collagen organization, extracellular matrix remodeling, angiogenesis, wound closure, and tissue recovery in preclinical settings.

Key Areas of Research:

• Structural: collagen, matrix, tendon/ligament

• Vascular: angiogenesis, nitric oxide, remodeling

• Dermatological: wound closure, inflammation, epithelium

• Systemic: protection, viability, recovery

Together, these findings suggest broad experimental utility for TB-500 across multiple biological pathways. By engaging structural and vascular processes and supporting epithelial and systemic responses, TB-500 provides a versatile platform for investigating tissue repair, recovery, and resilience in laboratory models.

Hsieh M.-J. et al., 2017

References

Goldstein A.L. et al. (2005). Thymosin beta-4 and tissue regeneration: potential mechanisms of action. Ann N Y Acad Sci.

Goldstein A.L., Hannappel E. et al. (2012). Thymosin beta-4: a multifunctional regenerative peptide. Expert Opin Biol Ther, 12(1):37–51.

Malinda K.M. et al. (1999). Thymosin beta-4 stimulates directional migration of human umbilical vein endothelial cells. FASEB J, 13(6):693–701.

Smart N. et al. (2007). Thymosin beta-4 induces adult epicardial progenitor mobilization and neovascularization. Nature, 445(7124):177–182.

Philp D. et al. (2003). Thymosin beta-4 promotes dermal wound healing. J Invest Dermatol, 121(4):694–701. 

Bock-Marquette I. et al. (2004). Thymosin beta-4 activates integrin-linked kinase and promotes cardiac cell migration, survival, and repair. Nature, 432(7016):466–472.