Discovery and Background
GHK Cu (Glycyl L Histidyl L Lysine Copper) is a naturally occurring tripeptide copper complex first identified in human plasma by Dr. Loren Pickart in 1973. It was discovered during research into why liver tissue from young donors could stimulate protein synthesis in liver tissue from older donors. The active factor was identified as GHK Cu, and subsequent research has revealed its remarkable biological activities.
Natural Occurrence
GHK Cu is found naturally in human plasma, saliva, and urine. Plasma levels decline significantly with age, from approximately 200 ng/mL at age 20 to approximately 80 ng/mL by age 60. This age related decline has led researchers to investigate whether supplementation with GHK Cu might counteract some aspects of tissue aging.
Mechanisms of Action
Wound Healing: GHK Cu promotes wound healing through multiple mechanisms including attraction of immune cells to the wound site, stimulation of collagen and glycosaminoglycan synthesis, promotion of angiogenesis, and anti inflammatory effects.
Collagen Remodelling: Research has shown that GHK Cu can stimulate both collagen synthesis and the breakdown of damaged collagen, effectively promoting tissue remodelling rather than simply adding new collagen.
Gene Expression: Genomic studies have revealed that GHK Cu influences the expression of over 4,000 genes, with effects on DNA repair, antioxidant defence, stem cell biology, and immune regulation.
Anti Inflammatory: GHK Cu has been shown to suppress inflammatory cytokines including TNF alpha and IL 6, while promoting anti inflammatory signals.
Research Applications
| Application | Key Findings |
|---|---|
| Wound healing | Accelerated closure, reduced scarring |
| Skin aging | Improved elasticity, reduced wrinkles |
| Hair research | Follicle stimulation, thickness improvement |
| Bone repair | Enhanced osteoblast activity |
| Lung tissue | Fibrosis reduction in models |
Topical vs Injectable Research
GHK Cu is unique among research peptides in that it is studied in both injectable and topical formulations. The topical form (such as facial serums) is used in dermatological research, while the injectable form is used for systemic tissue remodelling studies.
Conclusion
GHK Cu stands out as one of the most versatile and well studied peptides in tissue research. Its natural occurrence, age related decline, and broad spectrum of biological activities make it a compelling subject for researchers studying tissue repair, aging, and regenerative medicine.
All products are for research purposes only. Not for human consumption.