GHK-Cu and skin research

A copper-binding tripeptide in dermatological research

GHK-Cu is a tripeptide-copper complex that has served for decades as a model compound in research into skin tissue and the extracellular matrix. The compound is studied exclusively in a laboratory context, not as a substance intended for human use.

What GHK-Cu is at the molecular level

GHK-Cu consists of the tripeptide glycyl-L-histidyl-L-lysine, made up of three amino acids, complexed with a copper ion Cu2+. The tripeptide has a naturally strong affinity for copper and spontaneously forms this metal-peptide complex. This copper binding is functionally significant. Research on the isolated peptide sequence without the copper ion shows different molecular behaviour compared to research on the full GHK-Cu complex.

Discovery context: the work of Pickart

GHK-Cu was first described by researcher Loren Pickart in the 1970s, following observations that plasma from older individuals contained a lower concentration of this copper-binding peptide than plasma from younger individuals. This observation prompted decades of follow-up research into the role of the peptide-copper complex in tissue regulation at the cellular level.

Research directions: the collagen and ECM pathway

In dermatologically oriented laboratory research, GHK-Cu appears as a model compound for studying regulation of the extracellular matrix, abbreviated ECM. In vitro models using skin fibroblasts are used to examine how the complex relates to gene expression involved in collagen synthesis, and to the activity of metalloproteinases that break down and renew matrix components. The role of copper as a cofactor in certain enzymatic processes is also examined within these models.

• GHK-Cu, tripeptide-copper complex of glycyl-L-histidyl-L-lysine and Cu2+
• Discovered by Loren Pickart, based on plasma concentration observations
• Studied in vitro for ECM and collagen related pathways in skin fibroblasts

Strictly research material

All information above concerns in vitro and preclinical laboratory research. No claims are made regarding skin effects, cosmetic action, or use in humans. GHK-Cu is offered by togopeptide.com exclusively for research purposes.