GHK-Cu Research: Copper Peptides & Tissue Remodeling
GHK-Cu is a tripeptide — glycyl-L-histidyl-L-lysine — that naturally binds copper(II) to form a complex first isolated from human plasma. Its small size and copper affinity put it at the center of skin- and tissue-remodeling research for decades. This summary is for laboratory reference and educational use only and describes no human or cosmetic application.
A copper-carrying tripeptide
Much of GHK-Cu's studied activity is attributed to its role as a copper carrier. Foundational reviews describe the GHK sequence modulating tissue-remodeling processes and copper-dependent enzyme systems (Pickart, J Biomater Sci Polym Ed, 2008). [1] Copper is a cofactor in numerous repair and antioxidant pathways, so a peptide that delivers it has broad reach in the literature.
Skin regeneration & collagen signaling
GHK-Cu is most associated with skin research. Reviews describe modulation of multiple cellular pathways relevant to skin regeneration — including extracellular-matrix and collagen-related signalling — in in-vitro and animal models (Pickart, Vasquez-Soltero & Margolina, BioMed Res Int, 2015). [2] This is why it recurs in cosmetic-science research discussions.
Antioxidant & protective activity
A further strand of work examines GHK-Cu in the context of oxidative stress, with reviews discussing protective and anti-inflammatory activity against degenerative changes in research models (Pickart, Vasquez-Soltero & Margolina, Oxid Med Cell Longev, 2012). [3]
Preguntas frecuentes
What's the difference between GHK and GHK-Cu?
GHK is the bare tripeptide; GHK-Cu is the same peptide bound to a copper(II) ion. Much of the studied activity is attributed to the copper complex.
