What Is GHK-Cu?
GHK-Cu (glycyl-L-histidyl-L-lysine copper complex) is a naturally occurring tripeptide-copper complex found in human plasma, saliva, and urine. First isolated from human plasma albumin by biochemist Loren Pickart in 1973, GHK-Cu has since become one of the most-studied signaling peptides in regenerative biology research. It exists endogenously at relatively high concentrations in young adults (~200 ng/mL at age 20) and declines significantly with age, prompting research interest in its role in the aging phenotype.
GHK-Cu’s research profile is unusually broad — it has been investigated in wound healing, tissue remodeling, gene expression modulation, anti-inflammatory signaling, skin biology, nerve regeneration, and bone density research contexts. Its wide-ranging biological activity is attributed to its role as a signaling molecule that activates tissue repair and remodeling programs.
GHK-Cu Mechanism of Action
GHK-Cu exerts effects through multiple interconnected pathways:
- Gene expression reprogramming: Microarray studies documented by Pickart et al. identified that GHK-Cu modulates the expression of over 4,000 human genes — upregulating genes associated with tissue repair, collagen synthesis, and antioxidant defense, while downregulating genes associated with inflammation, cancer promotion, and cellular senescence
- Collagen and ECM synthesis: Stimulates production of collagen, elastin, and glycosaminoglycans in fibroblast models, supporting wound healing and dermal repair research applications
- Anti-inflammatory activity: Reduces TNF-α, IL-6, and other pro-inflammatory cytokines in cell culture and animal models
- Antioxidant copper delivery: The copper(II) complex is biologically active and contributes to superoxide dismutase activity and oxidative stress protection in research models
- Nerve growth factor (NGF) stimulation: Preclinical data indicates GHK-Cu promotes NGF synthesis, relevant to peripheral nerve regeneration research
GHK-Cu Research Data
- Wound healing: Multiple in vitro and animal studies demonstrate GHK-Cu accelerates wound contraction, increases re-epithelialization rates, and improves tensile strength of healed tissue. Studies in pigs showed equivalent or superior wound closure to established wound-healing agents
- Anti-fibrotic effects: Research has documented GHK-Cu reduces TGF-β-induced collagen overproduction in fibroblast models, suggesting applications in anti-fibrotic research programs
- Bone density: Animal studies demonstrate GHK-Cu promotes osteoblast activity and stimulates production of bone morphogenetic proteins (BMPs), supporting bone density research applications
- Lung research: Published studies show GHK-Cu reduces inflammation and fibrosis in COPD-related gene expression profiles and animal models of pulmonary injury
- Aging gene expression: Bioinformatics analysis of GHK-Cu’s gene modulation profile shows significant overlap with longevity pathways including downregulation of mTOR signaling and upregulation of autophagy-related genes
GHK-Cu Dosage Reference
| Research Context | Concentration / Dose | Application |
|---|---|---|
| In vitro cell culture | 1–100 nM range | Gene expression studies |
| Wound healing (animal) | 1–10 mcg/site | Topical or intradermal |
| Anti-inflammatory (in vitro) | 0.1–10 mcg/mL | Cell culture models |
| Systemic (rodent models) | 1–10 mg/kg | Subcutaneous or IP |
Published research data provided for reference only. Not dosing guidance for human use.
GHK-Cu vs. BPC-157 — Tissue Repair Peptide Comparison
| Parameter | GHK-Cu | BPC-157 |
|---|---|---|
| Type | Copper peptide complex | Synthetic pentadecapeptide |
| Primary mechanism | Gene expression modulation, ECM synthesis | Growth factor upregulation, angiogenesis |
| Copper requirement | Yes — copper(II) is part of the active complex | No |
| Primary research area | Dermal, anti-aging, lung, bone | Tendon, muscle, GI, neurological |
| Gene modulation breadth | Very broad (4,000+ genes) | More targeted |
Where to Buy GHK-Cu for Research
GHK-Cu’s copper coordination chemistry means purity verification is especially important — improperly synthesized material may have incorrect copper binding ratios. Key supplier criteria:
- HPLC purity ≥99% with batch documentation
- MS/MS verification confirming copper complex identity
- Third-party independent COA
- Lyophilized format for stability
Core Power Peptides supplies GHK-Cu 125mg at ≥99% purity, HPLC and MS/MS verified per batch, with third-party COA available on request.
Research Disclaimer: All information on this page is for educational and scientific reference purposes only. GHK-Cu is not approved as a therapeutic agent. This product is sold strictly for in vitro research and laboratory use. Not for human consumption. Not medical advice.