TB-500
TB-500 is a synthetic fragment (LKKTETQ sequence) derived from the larger protein Thymosin Beta-4 (TB4). The fragment is the portion of TB4 responsible for actin-binding and downstream effects on cell migration and angiogenesis in published research.
A synthetic fragment (LKKTETQ sequence) derived from the protein Thymosin Beta-4, studied for its actin-binding activity.
Primary research focus
- Tissue repair in skeletal, cardiac, and corneal models
- Cell migration and angiogenesis in wound-healing contexts
- Cardiac tissue-repair (animal models)
Mechanism of Action
Published research indicates TB-500's primary activity is actin sequestration and modulation of the actin cytoskeleton, which influences cell migration and differentiation in tissue research models. Secondary effects on angiogenesis and inflammation have been reported in animal studies. Note: much of the broader Thymosin Beta-4 research base is on the full-length protein, not the TB-500 fragment specifically — the LKKTETQ fragment-specific research is a subset of the broader TB4 literature.
Research Applications
- Tissue repair research — skeletal, cardiac, and corneal models
- Cell migration studies — wound healing and regeneration research
- Angiogenesis research — complementary mechanism to VEGF-focused compounds
- Hair follicle research — some published work on follicle stem cell migration
- Cardiac remodeling research — post-infarction animal models
Dosing Reference (Published Literature)
Research protocols in animal models have referenced a wide range depending on the study design. The published literature is more variable than BPC-157 because TB-500 research spans multiple model systems. Human clinical data is limited. Most personal research protocols reference subcutaneous administration.
Synergistic Compounds
- BPC-157 — The most-discussed combination in the research peptide community. Mechanistically complementary (BPC-157 on NO/VEGF pathways; TB-500 on actin dynamics), though direct combination-study data is thin.
- GHK-Cu — Both studied for tissue repair signaling through different mechanisms.
- Thymosin-Alpha-1 — Both are thymosin-family peptides but with distinct mechanisms (TB-500 on actin, TA-1 on immune modulation).
Research Protocols Using This Compound
Key References
- Goldstein AL, et al. — Foundational TB4 research
- Philp D, Kleinman HK — Angiogenesis and wound healing models
PMP Analogy
Your body is a construction site. When something gets damaged, TB-500 is like calling in extra workers who specialize in rebuilding. They show up fast, work around the clock, and fix things from the inside out.
Hook line: "TB-500 calls in the repair crew your body forgot it had." Source carousel: SPEC_021 TB-500 Deep Dive
⚠️ Research Use Only (RUO). For educational and research reference purposes only. Not medical advice. Not intended to diagnose, treat, cure, or prevent any disease or condition. Always consult a qualified healthcare professional before making health-related decisions.
Frequently Asked Questions
Is TB-500 FDA-approved?
No. TB-500 is not approved by the U.S. Food and Drug Administration for any clinical application. It remains classified as a research compound supplied for laboratory work only.
What does the research literature show about TB-500?
The published research record for TB-500 is summarized in the body of this article and the citations section. Pre-clinical and animal-model studies make up the bulk of the literature; human trial data is limited and is noted explicitly where it exists.
What are the documented synergistic compounds for TB-500 research?
See the Related Research sidebar for compounds that appear alongside TB-500 in the published literature. Detailed synergy notes will populate during the next vault expansion pass.
Where can I source TB-500 for research purposes?
See the Where to Source section above for vendors that supply research-grade TB-500. Listed vendors are affiliate partners of Peptide Manager Pro; we earn a small commission on referred orders at no additional cost to the buyer.
Is TB-500 safe for human or animal use?
TB-500 is sold for in vitro and laboratory research only. It is not intended for human or veterinary administration, and no safety determination for such use has been established by the U.S. Food and Drug Administration or any equivalent regulatory body.