GHK-Cu Copper Peptide — Research Compound

GHK-Cu's research mechanisms span several distinct biological axes: (1) **Collagen synthesis** — GHK-Cu stimulates collagen synthesis in fibroblast cultures (documented by multiple independent groups) via TGF-β1 upregulation and direct effects on fibroblast collagen gene expression; (2) **Tissue repair** — in rodent models, topical and systemic GHK-Cu accelerates wound closure, granulation tissue formation and re-epithelialization; (3) **Angiogenesis** — GHK-Cu stimulates VEGF and FGF-2 expression in fibroblasts and endothelial cells, promoting neovascularization in healing tissue; (4) **Inflammatory signaling** — GHK-Cu modulates TGF-β1-driven fibrosis (TGF-β1 at low concentrations stimulates collagen and at high concentrations drives fibrosis; GHK-Cu shifts the balance toward the repair direction); (5) **Antioxidant chemistry** — the Cu(II) complex has superoxide dismutase-like activity, scavenging reactive oxygen species in the culture environment. All of this is preclinical; GHK-Cu is not approved for any therapeutic indication.

GHK-Cu also has an active research record in skin biology and cellular-aging models. Published studies using fibroblast cultures and ex vivo skin models show GHK-Cu upregulates decorin, lumican and collagen-associated proteoglycans (extracellular-matrix components that maintain skin architecture), and stimulates TIMP-1 and TIMP-2 (inhibitors of the matrix metalloproteinases that degrade collagen). In-vitro work has also shown broad effects on gene expression — Pickart et al. and later Maquart's group published microarray data suggesting GHK-Cu modulates the expression of hundreds of genes involved in tissue remodeling, inflammation and cell proliferation in fibroblasts. That broad footprint is consistent with GHK-Cu acting as a natural tissue-remodeling signal rather than a receptor-targeted compound.

For researchers handling GHK-Cu: the compound is supplied as the copper(II) complex, which carries the characteristic blue-green colour of coordinated Cu(II). Stability is excellent in lyophilized form; in aqueous solution, pH and copper oxidation state matter (acidic pH preserves Cu(II)). The free peptide GHK (CAS 49557-75-7, without copper) retains some activity but substantially less in collagen-synthesis and tissue-repair assays — copper coordination appears essential for full activity. GHK-Cu should not be confused with free GHK, or with the synthetic copper peptides used in cosmetic formulations, which may differ in composition. DMV Research supplies GHK-Cu with a per-batch third-party Certificate of Analysis confirming identity and ≥99% purity by HPLC. Research use only.