Comparison
While Matrixyl is a widely used cosmetic peptide with evidence of stimulating extracellular matrix synthesis and reducing wrinkle appearance in skin-care formulations48, TB-500 is studied for enhancing musculoskeletal and cardiac repair, wound healing, and promoting cell migration and differentiation via actin cytoskeleton remodeling21255.
While Matrixyl works as a palmitoylated pentapeptide, Pal-Lys-Thr-Thr-Lys-Ser (Pal-KTTKS), that acts as a matrikine, signaling to dermal fibroblasts to increase production of collagen, elastin, fibronectin, and other ECM components4858, TB-500 is a synthetic peptide comprising the LKKTETQ actin-binding motif of thymosin beta-4 that binds G-actin, sequesters actin monomers, and promotes cell migration, angiogenesis, and tissue repair1255.
Matrixyl is 5 amino acids long, whereas TB-500 is longer as it has a length of 7 amino acids. Matrixyl is made up of a sequence of Lysine, Threonine, Threonine, Lysine, Serine. TB-500 is made up of a sequence of Lysine, Lysine, Lysine, Threonine, Glutamic acid, Threonine, Glutamine.
Matrixyl
Not clearly established in the current dataset.
TB-500
Binds monomeric actin (G-actin) rather than a classical cell-surface receptor, modulating actin polymerization at barbed and pointed ends55
Matrixyl
Not assigned in the current dataset.
TB-500
TMSB4X