GHK-Cu (Copper Peptide): Skin Research Applications & Mechanisms

GHK-Cu — formally Copper Tripeptide-1 (CAS 49557-75-7) — is one of the most extensively studied copper peptide complexes in skin cell biology. A naturally occurring tripeptide (Gly-His-Lys) bound to a copper ion (Cu²⁺), it is found in human plasma, saliva, and urine, with serum concentrations declining measurably with age: from approximately 200 ng/mL at age 20 to around 80 ng/mL by age 60.

Why GHK-Cu Matters in Research

The age-related decline in circulating GHK-Cu has made it a subject of interest in cellular senescence research, and its copper-binding chemistry makes it a useful tool for studying copper-dependent enzymes and extracellular-matrix (ECM) biology in vitro.

Key Research Mechanisms

Collagen Synthesis and ECM Remodelling

GHK-Cu has been reported in in vitro studies to increase collagen synthesis in fibroblast cultures while also influencing metalloproteinase (MMP)-regulated matrix turnover. This combination of synthesis and controlled turnover makes it a useful model compound for ECM research.

Cell Migration and Angiogenesis

Studies have examined GHK-Cu's effects on epithelial and endothelial cell migration and on angiogenic signalling in cell and preclinical models.

Antioxidant Activity and Inflammatory Signalling

GHK-Cu has shown antioxidant activity in cell models, including superoxide dismutase (SOD)-related effects and free-radical scavenging. Effects on inflammatory signalling are thought to involve NF-κB pathway modulation and interleukin regulation.

Gene Expression Modulation

Gene-expression analyses by Pickart and colleagues reported that GHK-Cu influences the expression of a large number of human genes, including ECM-related and inflammatory-signalling genes. This broad transcriptional activity has made GHK-Cu a research tool in skin genomics.

Hair Follicle Biology

In vitro studies have examined GHK-Cu's effects on hair follicle cells, making it a subject of interest in hair follicle biology research alongside the related compound AHK-Cu.

Formulation for Research

GHK-Cu is available from Peptide Biosciences as research-grade lyophilised powder (50mg and 100mg) for controlled in vitro experiments, and as raw cosmetic-grade GHK-Cu (1g) for formulation research. All batches are independently tested with certificates of analysis available on our COA page.

Selected Research Literature

Pickart L et al. (2015). Biomedicines. PMID 26236730. Errante F et al. (2022). Biomedicines. PMID 35083444.

All products are supplied strictly for in vitro laboratory research by qualified professionals. Not for human consumption.