Description

ABP-7 Peptide (Actin Binding Peptide-7)

Promote Wound Healing, Tissue Repair, and Angiogenesis

ABP-7 Peptide, also known as TB-500 Fragment, is a synthetic heptapeptide with the sequence Acetyl-LKKTETQ. Derived from Thymosin Beta 4, ABP-7 is recognized for its potential to enhance actin dynamics, support cellular migration, and promote tissue repair. Researchers consider its LKKTETQ sequence the central actin-binding domain, which may stabilize monomeric actin (G-actin) and influence cytoskeletal structure. Consequently, ABP-7 is being explored for wound healing, angiogenesis, and tissue regeneration studies.

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How ABP-7 Peptide Works

ABP-7 may modulate cellular architecture by preventing the polymerization of G-actin into filamentous actin (F-actin). This action can enhance cell motility, shape adaptation, and intracellular transport. By influencing cytoskeletal organization, ABP-7 may promote migration of epidermal and endothelial cells, accelerate wound closure, and support collagen deposition. Moreover, it may stimulate key signaling pathways, including MAP kinases, which regulate proliferation and migration.

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Research Applications

Wound Healing and Tissue Repair

Studies indicate ABP-7 may enhance keratinocyte migration, accelerate collagen deposition, and improve wound closure in aged models. By mimicking Thymosin Beta 4’s active domain, ABP-7 potentially facilitates the repair of damaged tissues efficiently.

Anti-Fibrotic Potential

ABP-7 may influence hepatic stellate cells and limit fibrotic activity by modulating PDGF-BB signaling, reducing α-SMA expression, and regulating collagen type I deposition. These mechanisms suggest a possible role in mitigating liver fibrosis and other fibrotic conditions.

Angiogenesis Support

Research suggests ABP-7 may enhance endothelial cell migration, tube formation, and vascular sprouting. By regulating actin availability in endothelial cells, it may support angiogenic processes, contributing to tissue regeneration and vascular health.

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Chemical Makeup

• Molecular Formula: C38H81N9O20

• Molecular Weight: 889.5 g/mol

• Other Names: TB-500 Fragment, Ac-LKKTETQ

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References:

1. Esposito, S., Deventer, K., Goeman, J., Van der Eycken, J., & Van Eenoo, P. (2012). Synthesis and characterization of the N-terminal acetylated 17-23 fragment of thymosin beta 4 identified in TB-500, a product suspected to possess doping potential. Drug testing and analysis, 4(9), 733–738. https://doi.org/10.1002/dta.1402
2. Sosne, G., Qiu, P., Goldstein, A. L., & Wheater, M. (2010). Biological activities of thymosin beta4 defined by active sites in short peptide sequences. FASEB journal : official publication of the Federation of American Societies for Experimental Biology, 24(7), 2144–2151. https://doi.org/10.1096/fj.09-142307