TB-500

Price range: $56.00 through $186.00 / 10 Vials

TB-500 (TB500 or Thymosin β-4 Active Fragment) is a synthetic heptapeptide corresponding to the N-terminal actin-binding domain of endogenous Thymosin β-4. It modulates cytoskeletal dynamics by sequestering G-actin monomers and promoting localized F-actin polymerization, thereby enhancing cellular motility and migration. TB-500 upregulates angiogenic growth factors (e.g., VEGF, FGF-2) via MAPK/ERK and PI3K/Akt signaling, driving neovascularization in ischemic or injured tissues. Concurrently, it attenuates pro-inflammatory cytokines (TNF-α, IL-6) through NF-κB inhibition, creating a reparative microenvironment. In in vitro and rodent models, these combined actions support accelerated tissue regeneration, angiogenesis, and reduced inflammatory damage.

Product Details

Product details
Amino Acid Sequence:Ac-Lys-Lys-Thr-Glu-Thr-Gln (Ac-LKKTETQ)
Molecular Formula:C₃₈H₆₈N₁₀O₁₄
Molecular Weight:889.02 g/mol
PubChem CID:62707662
CAS Number:885340-08-9
Contents:Lyophilized powder, white/off-white color

Additional information

Size

10mg, 5mg, 2mg

Mechanism of action

Actin Sequestration & Polymerization Regulation
TB-500 binds G-actin monomers, modulating actin filament dynamics and promoting cytoskeletal reorganization for enhanced cell motility.
Angiogenic Signaling
Upregulates VEGF and FGF-2 expression in endothelial cells, driving angiogenesis and neovascularization in ischemic or injured tissues.
Anti-Inflammatory Cytokine Modulation
Downregulates pro-inflammatory cytokines (e.g., TNF-α, IL-6) and upregulates anti-inflammatory mediators, creating a favorable environment for repair.
PI3K/Akt & MAPK/ERK Pathway Activation
Stimulates fibroblast and endothelial cell proliferation and migration via key growth-factor signaling cascades.

Storage & handling

Storage:Store the lyophilized vial in a cool, dry area protected from direct sunlight.