TB-500 (Research Overview)
TB-500 is a synthetic analog of the active region of Thymosin Beta-4 (Tβ4), a naturally occurring 43-amino acid peptide. Research has focused on its role in actin regulation, angiogenesis, and systemic tissue repair signaling.
Mechanism of Action
TB-500 corresponds to the actin-binding domain of Thymosin Beta-4 (amino acids 17–23, sequence LKKTETQ). Its primary studied mechanism involves sequestration of G-actin monomers, which regulates actin polymerization dynamics critical for cell migration and tissue remodeling. This actin-regulatory function is thought to underlie many of its observed effects on wound healing and repair processes.
Research has also examined TB-500's effects on upregulation of cell surface receptors, promotion of angiogenesis through VEGF pathway interactions, and modulation of inflammatory cytokine profiles. Its systemic distribution — unlike many peptides that act locally — has been a notable feature in preclinical studies.
Research Areas
Musculoskeletal repair research has been a primary focus, with studies examining TB-500's effects on muscle fiber regeneration, tendon healing, and cardiac muscle repair following ischemic injury. The cardiac research context has been particularly active, with multiple groups investigating Thymosin Beta-4 and its analogs for post-infarction myocardial repair.
Neurological research represents a growing area, with preclinical studies examining TB-500's effects on oligodendrocyte differentiation, remyelination, and neuroprotection following CNS injury. Anti-inflammatory properties have been studied in models of chronic inflammation and autoimmune conditions.
TB-500 is frequently studied in combination with BPC-157, as the two peptides are thought to act on complementary repair pathways — BPC-157 addressing local tissue repair and TB-500 providing systemic healing support. This combination is available as a blend in our catalog.
Specification summary
BPC-157 / TB-500 Blend
Synergistic blend of BPC-157 and TB-500. Stated purity ≥99%. For laboratory research use only.
Related materials
References
- Husson C, Cantrelle FX, Roblin P, Didry D, Le KH, Perez J, et al. Multifunctionality of the beta-thymosin/WH2 module: G-actin sequestration, actin filament growth, nucleation, and severing. Ann N Y Acad Sci. 2010;1194:44-52. PMID 20536449 · DOI
- Sosne G, Qiu P, Goldstein AL, Wheater M. Biological activities of thymosin beta4 defined by active sites in short peptide sequences. FASEB J. 2010;24(7):2144-51. PMID 20179146 · DOI
- Philp D, Goldstein AL, Kleinman HK. Thymosin beta4 promotes angiogenesis, wound healing, and hair follicle development. Mech Ageing Dev. 2004;125(2):113-5. PMID 15037013 · DOI
- Bollini S, Riley PR, Smart N. Thymosin β4: multiple functions in protection, repair and regeneration of the mammalian heart. Expert Opin Biol Ther. 2015;15 Suppl 1:S163-74. PMID 26094634 · DOI
- Zhang J, Zhang ZG, Li Y, Lu M, Zhang Y, Elias SB, et al. Thymosin beta4 promotes oligodendrogenesis in the demyelinating central nervous system. Neurobiol Dis. 2016;88:85-95. PMID 26805386 · DOI
- Goldstein AL, Hannappel E, Sosne G, Kleinman HK. Thymosin β4: a multi-functional regenerative peptide. Basic properties and clinical applications. Expert Opin Biol Ther. 2012;12(1):37-51. PMID 22074294 · DOI
Cited literature is provided for scientific context only and does not describe or endorse any use of these products.
For laboratory research use only. Not for human or veterinary use. Not intended to diagnose, treat, cure, or prevent any disease.