Collagen and angiogenesis research
GHK-Cu vs BPC-157: Research Comparison
GHK-Cu and BPC-157 are different kinds of peptide. GHK-Cu is the copper complex of a three-amino-acid peptide found naturally in human blood plasma. BPC-157 is a synthetic 15-amino-acid peptide based on part of a human gastric protein.
Side-by-side comparison
| Attribute | GHK-Cu | BPC-157 |
|---|---|---|
| What it is | Copper complex of the natural tripeptide GHK | Synthetic 15-amino-acid peptide |
| Proposed mechanism | Binds copper; increased collagen production in cultured fibroblasts | No single receptor established; linked to VEGFR2 and nitric-oxide signalling |
| Main models studied | Cell cultures and animal wound models | Rats and mice, mostly from one group |
| Human data | Used in cosmetic products; one small randomised study found no measurable difference | Three small uncontrolled pilot reports, about 30 people in total |
Detailed analysis
GHK (glycyl-L-histidyl-L-lysine) occurs naturally in human plasma and binds copper tightly; the copper complex, GHK-Cu, is the form most often studied and is used as a cosmetic ingredient. In cultured fibroblasts, the cells that make the skin's connective tissue, GHK-Cu increased collagen production (Maquart et al., 1988). Broader claims about effects on many genes come mainly from computer analyses of existing data.
BPC-157 has no established receptor. In human blood-vessel lining cells and in rats, it raised levels of VEGFR2 and switched on the Akt-eNOS pathway (Hsieh et al., 2017). Most studies come from one group in Zagreb and use rat or mouse injury models.
Human evidence is thin for both. In a small randomised study of 13 people after laser skin resurfacing, products with GHK-Cu made no measurable difference to the measures studied (Miller et al., 2006). BPC-157 has three small uncontrolled pilot reports with about 30 people in total.
Key differences
- ·GHK-Cu is a natural copper-binding tripeptide; BPC-157 is a synthetic 15-amino-acid peptide.
- ·GHK-Cu research centres on collagen production in fibroblasts; BPC-157 research centres on VEGFR2 and nitric-oxide signalling.
- ·Neither has large controlled human trials.
Research summary
GHK-Cu evidence is mostly cell culture and animal wound models (Maquart et al., 1988), with one small human study that found no measurable difference. BPC-157 evidence is mostly rat and mouse studies (Hsieh et al., 2017) with three small uncontrolled human reports. Supplied for laboratory research use only.