The GHK-Cu reading list
The maze experiments brought me here. The older cell, skin and delivery papers explain why the peptide has accumulated such different expectations.
Memory and metal handling
Start with the aged-mouse memory experiment and the 5xFAD mouse experiment. Both are 2023 preprints in the record used here. The 2024 nervous-system cell study asks a separate question about extracellular copper and zinc.
The biotinylated-peptide assays investigate modified molecules in cell-free chemistry. The rat papers address anxiety-like behaviour and pain-induced aggression. I would read each for its own outcome before trying to make them explain one another.
Skin, hair and delivery
The fibroblast collagen paper and 2015 skin review ground the skin discussion. The hair-count trial tests a combination. The excised-skin experiment measures copper delivery, while the 2025 review surveys the continuing topical-access problem.
For the wider repair story, there is the tissue-remodelling review and a biotinylated-GHK collagen matrix tested on rat wounds. The rat plasma assay follows free GHK metabolism. The gene-data paper supplies hypotheses whose scale can easily overshadow the smaller human record.
- Maquart FX, Pickart L, Laurent M, Gillery P, Monboisse JC, Borel JP. Stimulation of collagen synthesis in fibroblast cultures by the tripeptide-copper complex glycyl-L-histidyl-L-lysine-Cu2+. FEBS Letters. 1988;238(2):343-346. ↗
- Pickart L, Margolina A. Regenerative and Protective Actions of the GHK-Cu Peptide in the Light of the New Gene Data. International Journal of Molecular Sciences. 2018;19(7):1987. ↗
- Pickart L, Vasquez-Soltero JM, Margolina A. GHK Peptide as a Natural Modulator of Multiple Cellular Pathways in Skin Regeneration. BioMed Research International. 2015;2015:648108. ↗
- Lee WJ, Sim HB, Jang YH, Lee SJ, Kim DW, Yim SH. Efficacy of a Complex of 5-Aminolevulinic Acid and Glycyl-Histidyl-Lysine Peptide on Hair Growth. Annals of Dermatology. 2016;28(4):438-443. ↗
- Hostynek JJ, Dreher F, Maibach HI. Human skin penetration of a copper tripeptide in vitro as a function of skin layer. Inflammation Research. 2011;60(1):79-86. ↗
- Pickart L. The human tri-peptide GHK and tissue remodeling. Journal of Biomaterials Science, Polymer Edition. 2008;19(8):969-988. ↗
- Tucker M, Keely A, Park JY, Rosenfeld M, Wezeman J, Mangalindan R, Ratner D, Ladiges W. Intranasal GHK peptide enhances resilience to cognitive decline in aging mice. bioRxiv (preprint). 2023. ↗
- Tucker M, Liao GY, Park JY, Rosenfeld M, Wezeman J, Mangalindan R, Ratner D, Darvas M, Ladiges W. Behavioral and neuropathological features of Alzheimer's disease are attenuated in 5xFAD mice treated with intranasal GHK peptide. bioRxiv (preprint). 2023. ↗
- Tosto R, Vecchio G, Bellia F. New Biotinylated GHK and Related Copper(II) Complex: Antioxidant and Antiglycant Properties In Vitro against Neurodegenerative Disorders. Molecules. 2023;28(18):6724. ↗
- Bobyntsev II, Chernysheva OI, Dolgintsev ME, Smakhtin MY, Belykh AE. Anxiolytic effects of Gly-His-Lys peptide and its analogs. Bulletin of Experimental Biology and Medicine. 2015;158(6):726-728. ↗
- Endo T, Miyagi M, Ujiie A. Simultaneous determination of glycyl-L-histidyl-L-lysine and its metabolite, L-histidyl-L-lysine, in rat plasma by high-performance liquid chromatography with post-column derivatization. Journal of Chromatography B: Biomedical Sciences and Applications. 1997;692(1):37-42. ↗
- Sever'yanova LA, Dolgintsev ME. Effects of Tripeptide Gly-His-Lys in Pain-Induced Aggressive-Defensive Behavior in Rats. Bulletin of Experimental Biology and Medicine. 2017;164(2):140-143. ↗
- Arul V, Kartha R, Jayakumar R. Biotinylated GHK peptide incorporated collagenous matrix: A novel biomaterial for dermal wound healing in rats. Journal of Biomedical Materials Research Part B: Applied Biomaterials. 2005;73(2):383-391. ↗
- Mortazavi SM, Mohammadi Vadoud SA, Moghimi HR. Topically applied GHK as an anti-wrinkle peptide: Advantages, problems and prospective. BioImpacts. 2025. ↗
- Min JH, Sarlus H, Harris RA. Glycyl-l-histidyl-l-lysine prevents copper- and zinc-induced protein aggregation and central nervous system cell death in vitro. Metallomics. 2024. ↗