Wound Healing & Cell Migration
TB-500 has been studied extensively in wound healing models. Research has documented promotion of keratinocyte and endothelial cell migration, with observed acceleration of wound closure parameters in rodent models.
Overview
What is TB-500?
TB-500 is the synthetic form of the active region of Thymosin Beta-4, a 43-amino acid peptide naturally found in most nucleated cells. Research has focused on its role in actin dynamics, cell migration, wound healing, and angiogenesis. It is among the most abundant peptides in platelets and is released in response to tissue injury signals in animal models.
TB-500 (Thymosin Beta-4 Fragment) is supplied strictly as a reference material for in vitro and preclinical investigation. All characterization data described here is drawn from peer-reviewed literature and laboratory analysis; nothing herein constitutes a claim of clinical effect in humans.
Investigational Scope
Documented Research Areas
The following domains summarize directions explored across published studies and laboratory models. Each reflects observations reported in rodent models, in vitro systems, or the peer-reviewed record.
Cardiac Tissue Research
Studies have examined TB-500's role in cardiac tissue repair following injury, including myocardial infarction models in mice. Research has documented cardiomyocyte survival and progenitor cell activation effects.
Angiogenesis Models
TB-500 promotes angiogenesis in vitro and in vivo. Research has documented upregulation of VEGF, MMP-2, and cell adhesion molecules in endothelial cell cultures treated with Thymosin Beta-4.
CNS Injury Models
Research has examined Thymosin Beta-4 in models of spinal cord and brain injury, with studies documenting neuroprotective effects, oligodendrocyte differentiation, and reduced apoptotic marker expression.
Proposed Mechanism
Mechanistic Pathway
Mechanistic steps below are hypothesized from in vitro assays and animal-model data reported in the literature. They describe biochemical interactions observed under controlled experimental conditions.
-
1
G-Actin Sequestration
TB-500 binds G-actin monomers with high affinity through its LKKTET actin-binding domain, regulating the pool of available actin for polymerization and modulating cytoskeletal dynamics in migrating cells.
-
2
Cell Migration Promotion
By modulating actin polymerization dynamics, TB-500 promotes lamellipodia formation and directional cell migration. This has been documented in keratinocyte, endothelial, and smooth muscle cell migration assays.
-
3
ILK & FAK Pathway Activation
Research has documented TB-500's activation of integrin-linked kinase (ILK) and focal adhesion kinase (FAK) signaling, contributing to cell survival, proliferation, and extracellular matrix adhesion in wound healing models.
-
4
Anti-Apoptotic & Angiogenic Signaling
Studies have documented TB-500's upregulation of pro-survival signaling through Akt activation and VEGF expression, contributing to observed angiogenic and tissue-protective effects in animal model research.
Technical Data
Molecular Specifications
| Amino Acid Sequence | Ac-LKKTETQ (core actin-binding region of Tβ4) |
|---|---|
| Molecular Weight | 2,113.4 g/mol |
| Molecular Formula | C₉₇H₁₅₂N₂₈O₂₇S |
| CAS Number | 77591-33-4 |
| Storage | −20°C long-term, 4°C short-term up to 4 weeks |
References
Selected Literature
The following peer-reviewed references informed the research summaries on this page. Citations are provided for scientific context only.
- Goldstein AL, et al. (2012). Thymosin β4: a multi-functional regenerative peptide. Expert Opinion on Biological Therapy, 12(1), 37–51.
- 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.
- Philp D, et al. (2004). Thymosin beta4 and a synthetic tetrapeptide AcSDKP promote dermal and epidermal healing. Wound Repair and Regeneration, 12(4), 463–470.
- Sosne G, et al. (2010). Thymosin beta-4 modulates corneal stromal remodeling. FASEB Journal, 24(12), 4756–4765.
- Xiong Y, et al. (2011). Thymosin beta4 mRNA is expressed in the intact and injured rat and human spinal cord. Neurological Research, 33(5), 503–512.
Research Disclaimer
This product is intended strictly for laboratory research purposes only. It is not a drug, food, cosmetic, or dietary supplement and is not intended to diagnose, treat, cure, or prevent any disease. It is not for human or animal consumption. All information presented is derived from published scientific literature and is provided for educational reference only. By purchasing, the buyer affirms they are a qualified researcher or institution and assume full responsibility for the safe and lawful handling of this material.