GHK-Cu: What the Research Shows About the Copper Tripeptide

GHK-Cu is a naturally occurring copper-binding tripeptide that has been studied extensively in tissue-remodeling and gene-expression research. This guide summarizes what the published scientific literature has examined about GHK-Cu, its molecular profile, and how it is handled in a research setting. It is written for researchers and is not medical guidance.

What is GHK-Cu?

GHK-Cu (CAS 49557-75-7; molecular formula C₁₄H₂₄CuN₆O₄; molar mass ≈ 340.9 g/mol) is the copper(II) complex of the tripeptide glycyl-L-histidyl-L-lysine (GHK). GHK occurs naturally in human plasma and declines with age, which is part of why its copper complex became a frequent subject of cellular and biochemical research.

Research-use note: GHK-Cu is a research chemical supplied strictly for laboratory research. It is not an approved drug, cosmetic, or supplement and is not for human or animal consumption. Findings below come from cell-culture and animal-model studies.

How GHK-Cu works (the mechanism studied)

In published research, GHK-Cu has been studied as a modulator of tissue remodeling and gene expression. Cell-culture studies have examined its relationship to extracellular-matrix proteins (including collagen and matrix metalloproteinases such as MMP-2) and, in genomic analyses, its association with patterns of gene expression linked to tissue regeneration. These remain active areas of laboratory investigation.

What researchers have studied

The GHK-Cu literature spans biochemical, cell-culture, and genomic studies. The most-cited works include:

Tissue-remodeling research — Pickart (J Biomater Sci Polym Ed, 2008) reviewed GHK and tissue remodeling.
Gene-expression research — Pickart et al. (BioMed Research International, 2014) examined GHK and gene-expression patterns.
Matrix biology — earlier work examined the GHK-Cu complex and MMP-2 expression in fibroblast cultures.

These findings describe research outcomes in laboratory models, not validated outcomes in humans.

Handling and reconstitution in the laboratory

GHK-Cu is typically supplied as a lyophilized powder (characteristically blue, reflecting its copper content) for research use. Standard laboratory practice is to reconstitute it with bacteriostatic water, swirl (not shake) until dissolved, and store the reconstituted solution refrigerated (2–8 °C). The lyophilized powder is generally stored frozen and protected from light. (General lab-handling notes, not usage instructions.)

For research use only

All products and information referenced here are intended strictly for laboratory and scientific research use only. They are not for human or animal consumption and are not drugs, foods, supplements, cosmetics, or medical devices. No statement here should be interpreted as medical advice.

Explore GHK-Cu and related research peptides

GHK-Cu 50mg — verified CAS, formula, and specifications
KLOW 80mg — multi-peptide blend that includes GHK-Cu
Bacteriostatic Water 30ml — reconstitution diluent

References

Pickart L. The human tri-peptide GHK and tissue remodeling. J Biomater Sci Polym Ed. 2008. PubMed
Pickart L, et al. GHK and DNA: resetting the human genome to health. Biomed Res Int. 2014. PubMed
The tripeptide-copper complex GHK-Cu stimulates matrix metalloproteinase-2 expression by fibroblast cultures. PubMed