GHK-Cu

GHK-Cu modulates expression of genes associated with tissue remodeling, inflammation, and antioxidant defense in human fibroblasts^[1]

Using gene array analysis in human dermal fibroblasts, this study examined GHK-Cu's broad transcriptional activity across over 4,000 expressed genes. GHK-Cu at physiologically relevant concentrations (10 nM-1 uM) upregulated collagen I, III, and V synthesis genes alongside metalloproteinase regulators involved in extracellular matrix remodeling. Concurrently, genes associated with inflammatory signaling (TNF-alpha pathway, IL-6) were suppressed, and antioxidant response genes including SOD1 and glutathione peroxidase were upregulated. The authors proposed that GHK-Cu acts as a broad tissue-reset signal by resetting gene expression patterns toward a more regenerative state.

Last verified: 2026-04-03

The human tripeptide GHK-Cu in prevention of oxidative stress and degenerative conditions of aging — implications for cognitive health^[2]

This review synthesized evidence for GHK-Cu's neuroprotective and antioxidative properties from published in vitro, animal, and preclinical data. GHK-Cu demonstrated significant free radical scavenging activity and upregulation of superoxide dismutase in neural tissue models. In aged rodent brains, GHK-Cu was associated with reduced lipid peroxidation and improved spatial memory performance in maze tests. The authors highlighted GHK-Cu's dual role as both a copper chelator (preventing redox-active free copper accumulation) and a gene expression modulator as mechanistically distinct from conventional antioxidants.

Last verified: 2026-04-03