Mechanism of Action
BPC-157 acts via the nitric oxide (NO) system through eNOS/Src-Caveolin-1 pathway activation, upregulates VEGFR2-mediated angiogenesis, and modulates FAK-paxillin cytoskeletal signaling, driving fibroblast proliferation and ECM remodeling in experimental wound models.
TB-500 (Thymosin Beta-4) primary mechanism involves high-affinity monomeric G-actin binding (Kd ~0.5 μM), regulating the G-actin:F-actin equilibrium and cytoskeletal dynamics. By sequestering G-actin, Tβ4 modulates actin polymerization, lamellipodia formation, and directed cell migration — central to tissue repair in in vitro scratch assay models.
TB-500 also suppresses NF-κB with downstream reductions in TNF-α, IL-1β, and IL-6, activates the PI3K/Akt survival pathway, and upregulates VEGF expression in angiogenesis assays. The Ac-SDKP tetrapeptide released from the Tβ4 N-terminus is itself biologically active and studied for anti-fibrotic signaling.