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GHK-Cu Research Overview

An educational overview of GHK-Cu (copper tripeptide-1), its chemical properties, mechanism of action, and current research.

Scientific background / literature overview only. Discussion of published research does not describe the intended use of Novex Peptide products.

Novex Peptide Research Team26 July 2026 7 min read
GHK-Cu Research Overview

Introduction

GHK-Cu (glycyl-L-histidyl-L-lysine copper(II)) is a naturally occurring copper complex tripeptide first isolated from human plasma in 1973. It has been the subject of extensive laboratory research into tissue repair, wound healing, and extracellular matrix remodelling.

Mechanism of Action

GHK-Cu exerts its effects through multiple pathways:

Copper Delivery

GHK-Cu serves as a biological carrier for copper ions, facilitating their transport to cells and enzymes that require copper as a cofactor.

Gene Expression Modulation

Research has shown that GHK-Cu modulates the expression of numerous genes involved in tissue repair, including those regulating collagen synthesis, matrix metalloproteinases, and growth factors.

Anti-Inflammatory Effects

In vitro studies suggest GHK-Cu may influence inflammatory signalling pathways, though the precise mechanisms remain under investigation.

Current Research

Wound Healing

Animal and in vitro studies have investigated GHK-Cu's effects on wound healing, including collagen deposition, angiogenesis, and tissue regeneration.

Skin Research

GHK-Cu has been studied extensively in the context of dermal research, including effects on extracellular matrix components and fibroblast activity.

Nervous System

Some research has explored GHK-Cu's potential effects on neuronal cells and nervous system repair, though this area remains preliminary.

Chemical Properties

  • **Sequence:** Gly-His-Lys (GHK) complexed with Cu²⁺
  • **Molecular formula:** C14H24N6O4Cu
  • **Molecular weight:** 403.93 g/mol
  • **Appearance:** Blue powder or blue solution
  • **Solubility:** Highly water-soluble
  • Storage Considerations

  • Store lyophilised GHK-Cu at -20°C, protected from light.
  • Reconstituted solutions should be used immediately or aliquoted and frozen.
  • The copper complex is light-sensitive — store in amber vials or foil-wrapped containers.
  • Testing Methods

    GHK-Cu batches should be verified by:

  • RP-HPLC for purity
  • Mass spectrometry for identity
  • Copper content analysis (ICP-MS or AAS) to confirm stoichiometry
  • Research Limitations

    GHK-Cu is supplied for in vitro laboratory research and animal model studies only. Findings from preclinical studies are experimental and not established clinical facts. No medical, therapeutic, or cosmetic claims are made. GHK-Cu is not approved for human therapeutic use by any regulatory authority.

    References

    1. 1.Pickart L. A Tripeptide from Human Plasma. Nature. 1973;243:460.
    2. 2.Pickart L, Margolina A. GHK-Cu: A Human Copper Peptide. J Aging Res Clin Pract. 2018;7:1-10.
    3. 3.Maquart FX, et al. Tripeptide GHK-Cu and Wound Healing. Front Biosci. 2003;8:s1000-1006.

    Research use only. This article is for educational purposes only and does not constitute advice for any application involving human use. No medical claims are made.

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