GHK-Cu (Copper Peptide): Skin Regeneration, Wound Healing, and Anti-Inflammatory Research
A comprehensive overview of GHK-Cu (glycyl-L-histidyl-L-lysine copper complex, CAS 89030-95-5), examining its roles in collagen synthesis, skin regeneration, wound healing, and anti-inflammatory pathways.
Introduction
GHK-Cu (glycyl-L-histidyl-L-lysine-copper(II)) is a naturally occurring copper peptide complex found in human plasma, saliva, and urine. With a molecular weight of ~401.9 g/mol and CAS number 89030-95-5, GHK-Cu has been extensively studied for its biological effects on skin, hair, and tissue repair.
Chemical Properties
- Molecular Formula: C14H22CuN6O4
- Molecular Weight: ~401.9 g/mol
- CAS Number: 89030-95-5
- Appearance: Blue to blue-green powder
- Purity: ≥99% (HPLC verified)
Biological Significance
GHK-Cu is one of the most well-characterised copper peptides in biological research. Its concentration in human plasma declines with age — from approximately 200 ng/mL at age 20 to less than 80 ng/mL by age 60 — which has led to significant interest in its role in age-related tissue changes.
Mechanism of Action
Collagen and Elastin Stimulation
GHK-Cu has been shown to upregulate the expression of collagen Types I and III, as well as elastin. In fibroblast cultures, GHK-Cu stimulates the production of glycosaminoglycans (GAGs), contributing to the extracellular matrix's structural integrity.
Copper Transport
The peptide serves as a natural carrier for copper ions in biological systems. The tripeptide sequence GHK has a high affinity for Cu²⁺ ions, forming a stable complex that facilitates copper delivery to cells without the toxicity associated with free copper ions.
Anti-Inflammatory Effects
Research indicates GHK-Cu may modulate inflammatory responses by suppressing TNF-alpha secretion and modulating the expression of inflammatory markers. This property is particularly relevant in wound healing contexts.
Gene Expression Modulation
DNA microarray studies have shown that GHK-Cu affects the expression of over 4,000 human genes, many involved in tissue remodelling, oxidative stress defence, and inflammatory regulation.
Research Applications
Dermatology and Skin Care
- Stimulating collagen synthesis in aged fibroblasts
- Reducing the appearance of photoaging
- Improving skin barrier function
- Promoting keratinocyte proliferation
Wound Healing
- Accelerating wound closure in preclinical models
- Promoting angiogenesis at wound sites
- Reducing scar tissue formation
Hair Growth Research
- Extending the anagen (growth) phase of hair follicles
- Stimulating hair follicle proliferation
- Research into androgenic alopecia mechanisms
Tissue Engineering
- Modulating scaffold integration
- Promoting vascularisation in engineered tissues
GHK-Cu in Combination
GHK-Cu is often studied as part of multi-peptide research stacks:
- GLOW (BPC-157 + TB-500 + GHK-Cu): Investigating comprehensive tissue regeneration
- GHK-Cu + Vitamin C: Studying synergistic collagen synthesis
Handling and Stability
GHK-Cu should be stored in a dry environment away from direct sunlight. As a copper complex, it has characteristic blue coloration that should not be mistaken for contamination.
Safety
All products are sold for research purposes only. Not for human consumption.
Disclaimer: This article is for informational and educational purposes only.