GHK-Cu — Research Summary
Overview
GHK-Cu is a naturally occurring tripeptide-copper complex first isolated from human plasma in 1973. It is found in plasma, saliva, and urine, with levels that decline with age. Research has focused on its role in wound healing and tissue remodeling. The tripeptide glycyl-L-histidyl-L-lysine was first identified by Dr. Loren Pickart in 1973 during research comparing the bioactivity of human plasma from younger versus older individuals. When complexed with copper(II) ions, GHK-Cu forms a stable chelate that has been documented to occur naturally in blood plasma, saliva, and urine. Plasma concentrations of GHK-Cu have been measured at approximately 200 ng/mL in individuals aged 20-25, with levels reported to decline to approximately 80 ng/mL by age 60. This age-related decline has prompted researchers to investigate the potential significance of this peptide-copper complex in tissue homeostasis. Gene expression profiling studies using the Broad Institute Connectivity Map have documented that GHK influences the expression of over 4,000 human genes, suggesting a broad role in cellular regulation that extends well beyond its initially characterized wound healing properties. The compound's interactions with metalloproteinases, antioxidant pathways, and growth factor expression have been examined in numerous peer-reviewed publications.
Compound Profile
The following specifications characterize the GHK-Cu research compound as supplied for laboratory investigation purposes.
| Compound Name | GHK-Cu |
| Designation | GHK-Cu — 50 mg |
| Sequence / Structure | Glycyl-L-histidyl-L-lysine copper complex (MW ~403) |
| Purity | ≥98% |
| Form | Lyophilized powder |
| Vial Size | 50mg |
| Storage | Refrigerated after reconstitution |
| Research Category | Regenerative Research |
| Series | Recovery Series |
| SKU | CU-50 |
Published Research
The following findings have been documented in peer-reviewed publications and scientific literature. These summaries reflect reported observations and are presented for informational purposes in support of laboratory research activities.
- A comprehensive review in the International Journal of Molecular Sciences (Pickart & Margolina, 2018) documented GHK-Cu's ability to stimulate collagen synthesis, promote blood vessel and nerve outgrowth, and increase glycosaminoglycan production in multiple tissue types.
- Research published in Archives of Facial Plastic Surgery (Pollard et al., 2005) demonstrated that GHK-Cu restored replicative vitality to irradiated fibroblasts and increased secretion of growth factors including bFGF and VEGF.
- Studies in wound healing models showed that collagen dressing incorporated with GHK increased collagen synthesis 9-fold in rat wound models.
- Gene profiling studies using the Broad Institute Connectivity Map revealed that GHK can up- and downregulate over 4,000 human genes, including those involved in antioxidant response, inflammation, and tissue remodeling.
These findings reflect outcomes observed in controlled research settings and published study protocols. Individual experimental conditions, model organisms, and methodologies varied across studies. Results observed in preclinical and clinical research settings may not be generalizable.
Mechanism of Action
GHK-Cu is proposed to function through copper delivery to cells, gene expression modulation, and activation of multiple signaling pathways involved in tissue repair and remodeling.
The mechanisms described above have been characterized through published research methodologies including receptor binding assays, gene expression analyses, cell culture experiments, and in vivo preclinical models. Mechanistic understanding continues to evolve as additional research is published.
Research Context
Regenerative medicine research has increasingly focused on naturally occurring peptides and peptide-metal complexes that appear to play roles in the body's intrinsic repair processes. Investigations in this area examine how endogenous signaling molecules may influence stem cell recruitment, extracellular matrix remodeling, and gene expression patterns associated with tissue renewal. The study of peptide-copper complexes has been of particular interest, as copper is a cofactor for numerous enzymes involved in connective tissue formation, antioxidant defense, and wound healing. Researchers have explored how these complexes interact with fibroblasts, keratinocytes, and endothelial cells at the molecular level. Gene profiling technologies have enabled large-scale analysis of how regenerative peptides may modulate thousands of human genes simultaneously, offering new perspectives on the breadth of biological pathways that may be influenced by these compounds.
GHK-Cu has been studied within this broader research context. The compound is classified under the Regenerative Research category and is part of the Recovery Series in the Hot Peps research catalog. Researchers investigating regenerative research may find the published findings summarized above relevant to their experimental design and literature review processes.
Key Citations
The following references represent a selection of published studies relevant to GHK-Cu research. Full-text articles may be accessed through their respective journal publishers or indexed databases such as PubMed.
- Pickart L, Margolina A. Regenerative and Protective Actions of the GHK-Cu Peptide. Int J Mol Sci. 2018;19(7):1987.PMID: PMC6073405
- Pollard JD, et al. Effects of Copper Tripeptide on the Growth of Fibroblasts. Arch Facial Plast Surg. 2005;7(1):27-31
- Pickart L. GHK Peptide as a Natural Modulator of Multiple Cellular Pathways in Skin Regeneration. Biomed Res Int. 2015.PMID: 26236730
This compound is part of the Recovery Stack — tissue & regeneration pathway focus.
View Kit →Important Notice
GHK-Cu is sold exclusively for in vitro research, laboratory use, and scientific investigation purposes. This compound is not intended for human consumption, veterinary use, or any therapeutic application. It is not intended to diagnose, treat, cure, or prevent any disease or medical condition.
All research findings, statistics, and outcomes referenced on this page have been sourced from published peer-reviewed studies and scientific literature. These summaries are provided for informational purposes to support qualified researchers in their laboratory investigations. Results documented in published research were obtained under specific experimental conditions and may not be reproducible in all settings.
Researchers are responsible for ensuring that their use of research compounds complies with all applicable local, state, and federal regulations governing laboratory research materials.
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Learn More About Peptide Research
All findings referenced on this page reflect outcomes reported in published research studies. This product is sold strictly for in vitro research, laboratory use, and scientific investigation only. Not for human or veterinary use. Not intended to diagnose, treat, cure, or prevent any disease.