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Science Library · Copper peptide & matrix

GHK-Cu the science.

GHK-Cu is a naturally occurring copper-binding tripeptide (glycyl-L-histidyl-L-lysine bound to copper) first isolated from human plasma in 1973. Research has examined its role in skin and tissue remodeling, gene expression, and antioxidant activity — largely in cell cultures and animal models.

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GHK + Cu
Structure
1973
First isolated
ECM remodeling
Research focus
In vitro & animal
Evidence stage
GHK-Cu research vial

How it works

Mechanism at a glance

Compound
GHK-Cu
Action
Delivers bioavailable copper
Effect
ECM & growth-factor signaling
Studied for
Skin & tissue remodeling

Evidence to date

Evidence to date: in vitro and animal models, plus topical skin research.

What it is

GHK is a short tripeptide (Gly-His-Lys) that binds copper(II) ions with high affinity to form GHK-Cu. It occurs naturally in human plasma and other tissues, and its levels are reported to decline with age. Because it can deliver bioavailable copper to cells, it has been widely studied in dermatology and regenerative-biology research.

Pathways under study

GHK-Cu research spans several connected areas:

  • Extracellular matrix remodeling — effects on collagen, elastin, and glycosaminoglycans, and on the balance of matrix metalloproteinases (MMPs).
  • Wound healing & growth factors — fibroblast activity and angiogenesis in repair models.
  • Antioxidant & anti-inflammatory activity — reported reductions in pro-inflammatory signaling and modulation of broad gene-expression programs.

What research has explored

Most GHK-Cu evidence is in vitro and animal-model, alongside a substantial topical/cosmetic literature:

  • Tissue remodeling. Cell studies report stimulation of fibroblast proliferation and collagen synthesis, with balanced matrix turnover.
  • Gene expression. Microarray work has described GHK-Cu modulating the expression of a large number of human genes involved in repair and remodeling.
  • Antioxidant / aging. A 2012 review summarized GHK-Cu’s antioxidant activity and its study in the context of degenerative conditions of aging.

These findings come from laboratory and animal research; human therapeutic claims are not established.

Current state of the evidence

The GHK-Cu evidence base is primarily in vitro and preclinical, with topical/cosmetic research literature in skin contexts. No human therapeutic safety, dosing, or efficacy is established here; GHK-Cu is supplied strictly as a research material for laboratory investigation.

Compound Snapshot

At a glance

Identity

What is GHK-Cu?

Type
Copper-binding tripeptide
Sequence
Gly-His-Lys (GHK) + Cu²⁺
Origin
Endogenous (isolated from human plasma, 1973)
Primary interest
Matrix remodeling, antioxidant activity
Research family
Cellular health
Use classification
Research Use Only
PubChem Database

Evidence base

Research maturity

Preclinical In vitro & animal Topical literature
Maturity In vitro & animal Cell and animal studies, plus topical/cosmetic research literature in skin contexts.
Translation Not established (systemic) Laboratory findings do not establish human therapeutic safety, dosing, or benefit.

Sources & References

Peer-reviewed research and database records

Oxidative Medicine and Cellular Longevity / PubMed

The human tripeptide GHK-Cu in prevention of oxidative stress and degenerative conditions of aging

2012 · PMID 22666519 · DOI 10.1155/2012/324832 View Source

PubChem

GHK-Cu copper peptide compound search

NIH PubChem lookup for molecular identity and structure records. View Source

PubMed

GHK-Cu literature search

NCBI PubMed index for primary papers and reviews. View Source

For research use only. Not for human or veterinary use. These products have not been evaluated by the FDA. Nothing on this page is medical advice or a therapeutic claim.

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