GHK-Cu
Also: Copper tripeptide-1, Cu-GHK, GHK copper complex, Glycyl-L-histidyl-L-lysine copper(II), Copper peptide
This profile summarizes research context only. It is not medical advice and does not describe how to use this compound in humans or animals — no dosing, administration, or protocols. Learn more
GHK-Cu (copper tripeptide-1) is a naturally occurring copper-binding tripeptide that has been examined in laboratory and animal research as a copper-transport and tissue-signaling molecule. Most of the available literature is preclinical (in vitro and animal models), and findings should be interpreted cautiously given limited human-relevant data and well-known translation challenges. This profile is provided for research and educational purposes only and does not describe, recommend, or endorse any human or animal use. Terminology and formulations vary across sources and require independent editorial verification.
Mechanism as described in the literature
GHK-Cu is a copper-binding tripeptide (glycyl-L-histidyl-L-lysine complexed with copper(II)) that occurs naturally in human plasma and other tissues; the research literature also describes endogenous levels as varying with age. In research discussions it is characterized primarily as a copper-transport and signaling molecule, with proposed mechanisms centered on its affinity for copper ions and its described interactions with extracellular matrix components. These are descriptive, mechanistic characterizations rather than statements about any human outcome.
Mechanistic work, largely conducted in vitro and in animal models, has explored its reported associations with gene-expression patterns, fibroblast activity, and matrix-remodeling pathways. These observations are mechanistic and preclinical in nature; their relevance to any human outcome remains uncertain and requires careful interpretation due to study-design heterogeneity and the limits of translating cell- and animal-based findings.
Research areas
- Copper homeostasis and copper-transport processes (mechanistic studies)
- Extracellular matrix remodeling and fibroblast activity (in vitro)
- Tissue-repair and wound-related processes examined in animal models (preclinical)
- Modulation of gene-expression patterns (mechanistic literature)
- Dermatological and cosmetic-science research contexts
Documentation notes
References
Frequently asked questions
What is GHK-Cu?+
GHK-Cu is a naturally occurring copper-binding tripeptide (glycyl-L-histidyl-L-lysine complexed with copper) that appears in the research literature as a copper-transport and tissue-signaling molecule. It is discussed here strictly in a research and educational context, not as a product for any human or animal use.
Is GHK-Cu proven to be safe or effective?+
No. Most of the available literature is preclinical (in vitro and animal models), and the evidence is limited and should be interpreted cautiously. This profile makes no claim that GHK-Cu is safe, effective, or suitable for any use, and it does not describe administration of any kind.
Is the term 'GHK-Cu' used consistently across sources?+
Not always. Different sources use varying names and formulations (such as 'copper peptide' or 'copper tripeptide-1'), so terminology and source details require editorial verification before any comparison or conclusion is drawn.