GHK-Cu

GHK-Cu (copper peptide) is a naturally occurring tripeptide-copper complex first isolated from human plasma, where its concentration declines significantly with age. The compound has emerged as one of the most researched peptides in regenerative medicine due to its broad spectrum of tissue remodeling activities mediated through gene expression modulation.

Research has identified over 4,000 genes whose expression is regulated by GHK-Cu, with significant effects on genes involved in extracellular matrix synthesis, antioxidant defense, DNA repair, and anti-inflammatory responses. The peptide upregulates collagen types I, III, and IV, elastin, decorin, and glycosaminoglycans while suppressing metalloproteinase activity.

The copper ion is essential for GHK-Cu's biological activity, serving both as a structural element that maintains the peptide's active conformation and as a functional component in copper-dependent enzyme activation. GHK-Cu has been shown to enhance superoxide dismutase activity and support mitochondrial function.

Topical and injectable formulations of GHK-Cu are extensively studied in dermatological research, demonstrating effects on skin thickness, elasticity, and firmness. Additional research explores its potential in wound healing, hair growth stimulation, and as a systemic anti-aging compound targeting multiple hallmarks of cellular senescence.