TB-500
A synthetic fragment of Thymosin Beta-4 studied for cellular migration, tissue repair, and recovery pathway research.
⏱ Half-Life
Moderate duration profile
TB-500 demonstrates a moderate half-life characteristic in research literature, shaping how observation windows and study timelines are typically structured.
⚡ Onset Characteristics
Moderate measurable response
Onset is observed as moderate — a property that influences how researchers structure comparative studies versus other compounds in the recovery research category.
🧠 Key Notes
What makes it distinct
- 01Studied alongside BPC-157 in recovery research models
- 02Active fragment of Thymosin Beta-4
- 03Investigated for systemic vs localised distribution
🧬 Mechanism of Action
How it works
TB-500 is the synthetic active region of Thymosin Beta-4, a naturally occurring 43-amino-acid peptide. Its primary biological action is binding G-actin and regulating actin polymerisation — the cytoskeletal process that drives cell migration. By upregulating actin expression and mobilising progenitor cells to sites of injury, TB-500 promotes coordinated repair across multiple tissue types. It also supports new blood-vessel formation (angiogenesis through VEGF signalling), reduces inflammation, and demonstrates systemic distribution after subcutaneous administration — making it a whole-body repair signal rather than a localised one.
✨ Documented Benefits
What the research shows it supports
🔍 Research Insights
What the literature shows
Upregulates actin expression — a cytoskeletal protein central to cell migration during tissue repair.
Demonstrates systemic distribution after subcutaneous administration in animal pharmacokinetic studies.
Often the systemic complement to BPC-157's more localised action profile in paired research designs.
🧪 Typical Research Use Cases
Where it appears in study design
Soft tissue and tendon repair timeline research.
Vascular and angiogenesis modelling.
Combined recovery protocols paired with BPC-157.
📚 References
Peer-reviewed literature
Primary research sources cited on this profile. All links resolve to PubMed or the publishing journal.
- [01]
Goldstein, A. L., Hannappel, E., Sosne, G., & Kleinman, H. K. (2012). Thymosin β4: a multi-functional regenerative peptide. Basic properties and clinical applications. Expert Opinion on Biological Therapy, 12(1), 37–51.
Expert Opinion on Biological Therapy ↗ - [02]
Crockford, D., Turjman, N., Allan, C., & Angel, J. (2010). Thymosin β4: structure, function, and biological properties supporting current and future clinical applications. Annals of the New York Academy of Sciences, 1194, 179–189.
Annals of the NY Academy of Sciences ↗ - [03]
Bock-Marquette, I. et al. (2004). Thymosin β4 activates integrin-linked kinase and promotes cardiac cell migration, survival and cardiac repair. Nature, 432(7016), 466–472.
Nature ↗ - [04]
Philp, D. & Kleinman, H. K. (2010). Animal studies with thymosin β4, a multifunctional tissue repair and regeneration peptide. Annals of the New York Academy of Sciences, 1194, 81–86.
Annals of the NY Academy of Sciences ↗
Continue Exploring
Also explore: BPC-157, GHK-Cu, MOTS-c
