GHK-Cu (Glycyl-L-Histidyl-L-Lysine Copper) is one of the most extensively studied peptides in dermatological and regenerative research. Naturally occurring in human plasma, saliva, and urine, this copper-binding tripeptide has been the subject of decades of scientific investigation into its roles in skin repair, hair follicle biology, and cellular regeneration.
Discovery & Background
GHK was first isolated from human plasma albumin in 1973 by Loren Pickart, who observed that it stimulated liver tissue regeneration. Subsequent research identified its high affinity for copper ions, forming the GHK-Cu complex that is now widely studied for its broad biological activities.
Hair Follicle Research
One of the most actively investigated areas of GHK-Cu research is its potential role in hair follicle biology. Preclinical studies have explored several mechanisms:
- Follicle enlargement — Research in rodent models has observed increases in follicle size following GHK-Cu treatment.
- Stimulation of hair growth — Studies have investigated GHK-Cu's ability to stimulate hair follicle cells and extend the anagen (growth) phase.
- 5-alpha reductase modulation — Some research has examined GHK-Cu's interaction with pathways relevant to androgenic alopecia models.
Skin Regeneration Research
GHK-Cu has been extensively studied for its effects on skin biology, with research investigating:
- Collagen and elastin synthesis — Studies have demonstrated GHK-Cu's ability to stimulate fibroblast production of collagen types I and III, as well as elastin and glycosaminoglycans.
- Wound healing — Research has observed accelerated wound contraction and re-epithelialisation in GHK-Cu treated models.
- Antioxidant activity — GHK-Cu has been studied for its ability to upregulate antioxidant enzymes and reduce oxidative stress markers.
- Anti-inflammatory effects — Research has investigated its modulation of inflammatory cytokines including TNF-α and IL-6.
Gene Expression Research
Perhaps most remarkably, research by Pickart and colleagues identified that GHK-Cu modulates the expression of over 4,000 human genes, with effects observed on pathways related to tissue remodelling, inflammation, DNA repair, and cellular energy metabolism. This broad genomic activity has made GHK-Cu a subject of significant interest in longevity and anti-aging research.
Research Status
While GHK-Cu has an extensive preclinical research base, it is important to note that it is not approved as a therapeutic agent by any regulatory authority. All research findings referenced here are from preclinical studies and should not be interpreted as clinical evidence of efficacy in humans.
All Peptara Lab compounds are supplied strictly for laboratory research purposes only. Not for human use.