How GHK Peptide Works Signaling GHK acts as a switch for skin repair: Interacts with adenosine receptors reduces inflammation Activates MAPK ERK, PI3K Akt, TGF pathways Stimulates fibroblasts & keratinocytes boosts collagen, elastin 89030 95 5 GHK Cu Gly His Lys Cu Copper Tripeptide 1; Prezatide copper PDF) Regenerative and Protective Actions of the GHK Cu Peptide in the Light of the New Gene Data GHK Cu Peptide: What It Does for Body Composition and Metabolic Health GHK Cu may Prevent Oxidative Stress in Skin by Regulating Copper and Modifying Expression of Numerous Antioxidant Genes