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GHK-Cu

Copper Tripeptide-1, Glycyl-L-Histidyl-L-Lysine Copper, Prezatide Copper

Quick Stats
Studies 149
Trials 1
2025 pubmed 1 citations

Copper Complexes with New Glycyl-l-histidyl-l-lysine-Hyaluronan Conjugates Show Antioxidant Properties and Osteogenic and Angiogenic Synergistic Effects.

Greco. Valentina V; Lanza. Valeria V; Tomasello. Barbara B; Naletova. Irina I; Cairns. Warren R L WRL; Sciuto. Sebastiano S; Rizzarelli. Enrico E

Abstract

In recent years, hyaluronic acid (HA) and the natural tripeptide glycyl-l-histidyl-l-lysine (GHK), especially its copper(II) complex (GHK-Cu), individually have been shown to exert helpful properties for bone protection and regeneration. However, they are not strong enough to handle oxidative stress, hydrolytic attack, or environmental conditions. Being aware that conjugation chemistry has recently emerged as an appealing approach for generating new molecular entities capable of preserving the molecular integrity of their moieties or delaying their degradation, herein we present the synthesis of conjugates of HA with GHK (GHK-HA), at different loadings of the tripeptide. GHK-HA binds copper(II) ions and potentiates the chemical and biological properties of the two components in in vitro assays. The results highlight copper's role in promoting the expression and release of certain trophic, angiogenic, and osteogenic factors, including brain-derived neurotrophic factor (BDNF), vascular endothelial growth factor (VEGF), as well as bone morphogenetic protein-2 (BMP-2). The protective and regenerative activities of the metal ion are related to the translocation of its intracellular chaperones Copper Chaperone for Superoxide Dismutase (CCS) and Antioxidant-1 (Atox1) to the nucleus where they act as transcription factors.

Study Information

Provider

pubmed

Year

2025

Date

2025-03-24T00:00:00.000Z

DOI

10.1021/acs.bioconjchem.4c00545

Citations

1

References

127