GHK-Cu: a human copper-binding peptide with skin repair and anti-aging activity

Advances in Wound Care·2018·Pickart L, Margolina A·Advances in Wound Care

This review summarizes decades of research on GHK-Cu, a naturally occurring copper complex that declines with age. The authors discuss its effects on collagen synthesis, gene expression modulation, and wound healing, noting that GHK-Cu influences over 4,000 human genes involved in tissue remodeling.

Why this research is interesting

GHK-Cu is one of the most studied copper peptides in dermatology and wound healing research. This review provides a useful overview of its biological effects and the evidence supporting them.

What the research says

The review covers in-vitro and animal research showing that GHK-Cu stimulates collagen and elastin production, modulates inflammatory signaling, and promotes wound healing. Gene expression studies suggest it resets expression patterns in aged fibroblasts.

What the evidence shows

This is a narrative review compiling primarily in-vitro and animal studies. Clinical evidence in humans is limited. The gene expression data are from laboratory studies, not clinical outcomes.

What remains uncertain

Whether the gene expression changes and in-vitro findings translate to clinically meaningful anti-aging or wound healing outcomes in humans requires controlled trials. The optimal concentration, formulation, and delivery method are not established.