Peptides, Part 2: Copper GHK’s Role in Healing & Regeneration

In this 166th episode, I continue with my mini-series on peptide therapies and discuss Copper GHK. Copper GHK is a small copper-bound tripeptide that affects repair, aging, and gene expression. I cover its natural role in plasma and tissues, how levels fall with age, and the surprising breadth of its actions—from extracellular matrix remodeling and antioxidant effects to cognitive protection, cardiovascular benefits, and boosted wound healing. I also walk through the molecular mechanisms, real-world applications, and practical considerations for clinicians and listeners interested in regenerative support.Citations:1.     Pickart L, Vasquez-Soltero JM, Margolina A. GHK Peptide as a Natural Modulator of Multiple Cellular Pathways in Skin Regeneration. Biomed Res Int.2015;2015:648108. doi: 10.1155/2015/648108. Epub 2015 Jul 7. PMID: 26236730;PMCID: PMC4508379. 2.     Pickart L, Margolina A. The Effect of the Human Plasma Molecule GHK-Cu on Stem Cell Actions and Expression of Relevant Genes. OBM Geriatrics 2018;2(3):009;doi:10.21926/obm.geriatr.1803009. 3.     Adnan SB, Maarof M, Fauzi MB, Fadilah NIM. Exploring the Role of Tripeptides in Wound Healing and Skin Regeneration: A Comprehensive Review. Int J Med Sci. 2025 Oct1;22(16):4175-4200. doi: 10.7150/ijms.118118. PMID: 41209547; PMCID:PMC12595317. 4.     Zoughaib M, Luong D, Garifullin R, Gatina DZ, Fedosimova SV, Abdullin TI. Enhanced angiogenic effects of RGD, GHK peptides and copper (II) compositions in synthetic cryogel ECM model. Mater Sci Eng C Mater Biol Appl. 2021Jan;120:111660. doi: 10.1016/j.msec.2020.111660. Epub 2020 Oct 21. PMID:33545827. 5.     Pickart L, Margolina A. Regenerative and Protective Actions of the GHK-Cu Peptide in the Light of the New Gene Data. Int J Mol Sci. 2018 Jul 7;19(7):1987. doi:10.3390/ijms19071987. PMID: 29986520; PMCID: PMC6073405.