The tripeptide-copper complex glycyl-L-histidyl-L-lysine-Cu2+ stimulates matrix metalloproteinase-2 expression by fibroblast cultures.
Siméon. A A; Emonard. H H; Hornebeck. W W; Maquart. F X FX
Key Findings
- GHK‑Cu increases MMP‑2 protein levels in fibroblast culture media.
- The rise in MMP‑2 is linked to higher MMP‑2 mRNA, indicating gene‑level activation.
- GHK‑Cu also raises secretion of TIMP‑1 and TIMP‑2, the body’s natural brakes on matrix‑degrading enzymes.
Practical Outcomes
- For biohackers, the data suggest that topical or possibly systemic GHK‑Cu could enhance skin remodeling and wound healing, supporting anti‑aging skin protocols. The effect depends on the copper ion, so formulations must retain the metal‑peptide complex. However, the study is in vitro, so dosing and safety for humans remain to be clarified before routine use.
Summary
The study shows that the copper‑bound peptide GHK‑Cu boosts the production of enzymes (MMP‑2) that remodel skin’s extracellular matrix and also raises natural inhibitors (TIMP‑1, TIMP‑2). This effect comes from the copper part, not the peptide alone, and it works in cultured skin cells.
Abstract
Glycyl-histidyl-lysine-Cu2+ (GHK-Cu) is a tripeptide-copper complex known to be a potent wound healing agent. We previously showed its ability to stimulate in vitro and in vivo the synthesis of extracellular matrix components. The aim of this study was to determine the effects of GHK-Cu on MMP-2 synthesis by dermal fibroblasts in culture. We showed that GHK-Cu increased MMP-2 levels in conditioned media of cultured fibroblasts. This effect was reproduced by copper ions but not by the tripeptide GHK alone. This stimulation was accompanied by an increase of MMP-2 mRNA level. We also showed that GHK-Cu increased the secretion of the tissue inhibitors of metalloproteinases, TIMP-1 and TIMP-2. Taken together, our results underline that GHK-Cu is not only an activator of connective tissue production but also of the remodeling of the extracellular matrix. It is able to modulate MMP expression by acting directly on wound fibroblasts.
Study Information
pubmed
2000
2000-09-22T00:00:00.000Z
10.1016/s0024-3205(00)00803-1