Molecular Characteristics
Complete Specifications
Structural Composition
Gly-His-Lys (GHK) complexed with copper (II) ion
Physical Properties
GHK-Cu is a copper (II) coordination complex of the tripeptide Gly-His-Lys. The histidine residue facilitates stable copper binding, forming a compact metal-peptide structure with distinct physicochemical properties compared to the free peptide. The metal complex enhances structural rigidity and influences solubility characteristics under laboratory conditions. Lyophilized storage and protection from moisture, light, and repeated freeze–thaw cycles help preserve structural integrity and maintain analytical consistency during research applications.
Research Applications
Skin and Extracellular Matrix Research
GHK-Cu (glycyl-L-histidyl-L-lysine copper complex) is utilized as a research compound in studies examining extracellular matrix biology and tissue remodeling mechanisms. Laboratory investigations focus on its role in:
- Collagen Synthesis Models: Investigation of collagen production, deposition, and matrix organization in dermal systems
- Elastin and Glycosaminoglycan Studies: Evaluation of structural protein and polysaccharide regulation within connective tissues
- Dermal Fibroblast Activity Research: Analysis of fibroblast proliferation and matrix remodeling signaling pathways
- Wound Repair Mechanism Studies: Examination of cellular migration and tissue regeneration processes in experimental models
- Matrix Metalloproteinase Regulation: Investigation of enzymatic systems influencing extracellular matrix turnover
Experimental protocols commonly employ dermal fibroblast cultures, extracellular matrix assays, and tissue repair models to characterize GHK-Cu–mediated remodeling responses.
Hair Follicle and Epithelial Research
GHK-Cu has been examined in research contexts involving epithelial biology and hair follicle signaling pathways. Key areas of investigation include:
- Hair Follicle Cell Activity Models: Evaluation of follicular keratinocyte proliferation and signaling dynamics
- Angiogenesis in Dermal Systems: Investigation of microvascular support mechanisms within skin tissue models
- Epithelial Differentiation Studies: Analysis of cellular maturation and structural protein expression
- Inflammatory Pathway Modulation: Research into signaling pathways influencing dermal inflammatory balance
- Copper Ion Signaling Research: Examination of copper-dependent enzymatic and cellular processes
These studies utilize epithelial cell assays, angiogenic signaling models, and molecular profiling techniques to evaluate tissue-level outcomes.
Inflammatory and Oxidative Stress Research
GHK-Cu has also been explored in research models examining inflammatory signaling and oxidative stress regulation, including:
- Cytokine Expression Studies: Evaluation of inflammatory mediator patterns in dermal and connective tissue systems
- Antioxidant Enzyme Regulation: Investigation of superoxide dismutase and related copper-dependent enzymes
- Reactive Oxygen Species Modulation: Research into redox balance within cellular environments
- Tissue Remodeling Pathways: Examination of signaling systems balancing inflammation and repair processes
Laboratory protocols assess oxidative biomarkers, inflammatory mediators, and matrix composition using biochemical and imaging-based techniques.
Cellular Signaling and Regenerative Research
Additional research applications explore GHK-Cu’s influence on intracellular signaling systems involved in tissue maintenance and regeneration, including:
- Growth Factor Signaling Studies: Investigation of pathways influencing dermal and connective tissue regeneration
- Gene Expression Profiling: Analysis of transcriptional responses associated with extracellular matrix regulation
- Cell Migration and Proliferation Models: Research into tissue repair and remodeling dynamics
- Homeostatic Regulation Mechanisms: Examination of regulatory systems preserving connective tissue stability
Research in this domain focuses on understanding how GHK-Cu influences extracellular matrix composition, inflammatory balance, and regenerative signaling pathways under controlled experimental conditions.
Laboratory Handling and Storage Protocols
Lyophilized Powder Storage
- Store at –20°C to –80°C in the original, sealed vial
- Protect from light exposure and moisture
- A desiccated storage environment is recommended
- Stability data suggests extended stability when stored at −20 °C or below.
Reconstituted Solution Storage
- Short-term storage: Up to 7 days at 4°C
- Long-term storage: Store at –20°C in aliquots
- Use single-use aliquots to preserve peptide integrity
- Minimize freeze–thaw cycles; single-use aliquots are strongly recommended
Stability Characteristics
GHK-Cu is a synthetic peptide–copper complex research compound that demonstrates stable handling characteristics when managed under standard peptide laboratory protocols. Proper cold storage, protection from light exposure, careful reconstitution, and minimized freeze–thaw exposure help maintain structural integrity and solubility. When handled appropriately, GHK-Cu supports consistent use in in vitro and analytical research applications.
Frequently Asked Questions
What is GHK-Cu?
GHK-Cu is a copper-binding tripeptide complex originally identified in human plasma. In research environments, it is used to investigate copper-dependent cellular signaling and regenerative pathway mechanisms.
What is GHK-Cu commonly researched for?
In experimental and preclinical models, GHK-Cu is studied for:
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Extracellular matrix and collagen-related signaling
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Gene expression modulation research
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Tissue remodeling pathway investigation
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Copper ion transport and cellular regulation studies
All research applications are exploratory and conducted in controlled laboratory settings.
Is GHK-Cu different from GHK?
Yes. GHK refers to the tripeptide sequence alone, while GHK-Cu specifically refers to the copper-bound form. The copper complex is often the focus of research due to its biological activity in signaling pathways.
Is GHK-Cu naturally occurring?
Yes. GHK-Cu has been identified in human plasma and other tissues. Synthetic versions used in research are manufactured to replicate this naturally occurring complex.
How is GHK-Cu supplied?
GHK-Cu is typically supplied as a lyophilized (freeze-dried) powder in sealed research vials to preserve stability during storage and transport.
How should unreconstituted GHK-Cu be stored?
Lyophilized GHK-Cu should be stored:
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Long-term: −20 °C to −80 °C
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Short-term: 2–8 °C
Keep vials sealed and protected from light and moisture, as copper complexes can be sensitive to environmental exposure.
How should reconstituted GHK-Cu be handled and stored?
Once reconstituted:
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Store at 2–8 °C for short-term laboratory use
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For extended storage, aliquot and freeze at −20 °C or below
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Minimize freeze–thaw cycles using single-use aliquots
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Protect from prolonged light exposure
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Gently swirl to mix; avoid vigorous agitation
Does GHK-Cu require a Certificate of Analysis (COA)?
Yes. A Certificate of Analysis (COA) should be available for each batch, confirming peptide identity, copper content, purity, and analytical testing results to ensure research quality and traceability.
Is GHK-Cu FDA-approved?
GHK-Cu sold as a research compound is not FDA-approved as a drug or therapeutic product. It must not be marketed or used for diagnostic, therapeutic, or consumption purposes.
Research Background
GHK-Cu is one of the few compounds in this catalogue with randomised controlled trials in humans — though both were topical, and neither showed an objective benefit over its comparator. For the full referenced picture, including what the 179 indexed papers do and do not establish, see What Is GHK-Cu?. It cites peer-reviewed sources and contains no dosing guidance.
This product is not for human consumption. It is sold strictly for research and educational purposes and is not intended to diagnose, treat, cure, or prevent any disease.
Any clinical data or research information referenced on this page is derived from peer-reviewed scientific literature and official publications. This information is provided for educational reference only and does not constitute medical advice or product claims.
By purchasing this product, you acknowledge that you are a qualified researcher and agree to use it in full compliance with all applicable laws and regulations.
