GHK-Cu Copper Peptide: Research Applications and Laboratory Use
By UK Peptide Lab Research Team•5 January 2025•8 min read
What is GHK-Cu?
GHK-Cu (Glycine-Histidine-Lysine Copper) is a naturally occurring copper-binding tripeptide found in human plasma, saliva, and urine. First identified by Loren Pickart in 1973, it consists of the tripeptide GHK complexed with a copper (II) ion. Its molecular weight is approximately 340 Da, making it one of the smaller peptides studied in biological research. GHK-Cu has been detected in human plasma at concentrations that decline significantly with age, which has made it an interesting subject for researchers studying ageing biology and extracellular matrix maintenance.
Molecular Properties
The copper ion in GHK-Cu plays a central role in its biological activity in research models. Copper is an essential cofactor for numerous enzymatic processes including lysyl oxidase, which is critical for collagen and elastin crosslinking. GHK-Cu's ability to chelate and transport copper has made it a useful research tool for studying copper-dependent biological processes, metalloproteinase activity, and extracellular matrix remodelling.
Research Applications
GHK-Cu has been studied extensively in the context of collagen synthesis and extracellular matrix biology. In-vitro studies have examined its effects on fibroblast activity, collagen and glycosaminoglycan production, and matrix metalloproteinase regulation. Research has also explored its interactions with growth factors including TGF-beta and VEGF in wound healing models.
In skin biology research, GHK-Cu has been examined for its role in keratinocyte behaviour, dermal fibroblast activity, and angiogenesis. It has also been studied in models relating to anti-inflammatory signalling, nerve tissue, and hair follicle biology.
More recently, research has examined GHK-Cu's potential interactions with gene expression. Studies have suggested it may influence a broad range of genes associated with tissue remodelling, inflammation regulation, and antioxidant defence systems, making it an interesting tool for researchers studying gene regulation in tissue biology contexts.
Laboratory Handling and Storage
GHK-Cu is supplied as a lyophilised powder with a characteristic blue colour due to the copper complex. Store at -20°C long term and away from light. Once reconstituted with bacteriostatic water store at +4°C and use within 4 weeks. Handle under sterile conditions. The blue colouration of the reconstituted solution is normal and expected.
Note that GHK-Cu should be stored separately from other peptides as copper ions can interact with certain compounds. Always use dedicated sterile equipment for each peptide in multi-peptide laboratory protocols.
Sourcing Research-Grade GHK-Cu in the UK
UK Peptide Lab supplies research-grade GHK-Cu copper peptide as lyophilised powder sourced from GMP certified manufacturers, with full batch documentation. Available for fast UK delivery via Royal Mail Tracked. Strictly for in-vitro laboratory research use only.
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Disclaimer: This article is for research and educational purposes only. All information provided is not intended as medical advice. UK Peptide Lab products are not for human consumption and are sold strictly for laboratory research use only.