GHK-CU (Copper) (50mg)

GHK-Cu Peptide

GHK-Cu is an endogenous peptide originally identified in human blood plasma, with additional presence detected in saliva and urine. Preclinical investigations suggest that GHK-Cu may have the capacity to influence tissue regeneration and modulate certain immunological responses.[1] It has been explored for its potential involvement in processes related to cellular aging, protein synthesis, reduction of free radical damage, inhibition of microbial growth, and enhancement of skin fibroblast activity. Scientific research into this multifunctional peptide continues to evolve.

Specifications

Molecular Formula: C₁₄H₂₃CuN₆O₄

Molecular Weight: 340.38 g/mol

Sequence: Gly-His-LysCu.xHAc

GHK-Cu Research

GHK-Cu and Skin Cells

GHK-Cu is a naturally occurring component in blood and has been widely studied for its potential role in skin regeneration. Experimental findings in skin culture models suggest that GHK may support both the formation and breakdown of collagen, glycosaminoglycans, and other extracellular matrix elements such as proteoglycans and chondroitin sulfate.

This activity may be partly linked to the peptide’s ability to attract fibroblasts, endothelial cells, and immune cells to areas of tissue damage, coordinating their participation in repair processes. The peptide has also been evaluated for its possible regulatory influence on collagen synthesis. Evidence indicates that its activity may be partially associated with the expression of transforming growth factor beta (TGF-β), and it is likely that multiple biochemical pathways are involved, including those affecting gene expression.

Research in murine models has suggested that GHK-Cu may accelerate wound healing in burn injuries by up to 33%.[1] The peptide appears to facilitate the recruitment of immune cells and fibroblasts to damaged areas and may contribute to the formation of new blood vessels.

GHK-Cu and Cognitive, Nervous System Functions

The underlying causes of neuronal loss in conditions such as Alzheimer’s disease remain incompletely understood. Research has indicated that GHK-Cu may have the potential to mitigate aspects of neuronal decline associated with such conditions.[2]

Experimental data suggest that the peptide may promote angiogenesis in neural tissues, support nerve growth, and reduce inflammatory activity within the central nervous system. Additional findings support the idea that GHK-Cu may influence gene expression patterns linked to pathological states, potentially helping restore more balanced biological function.

Endogenous levels of GHK-Cu are known to decrease with age. Some researchers propose that the peptide may provide neuroprotective effects against cellular stressors such as gene dysregulation. It has been hypothesized that GHK-Cu may help protect neurons from apoptosis via the miR-339-59/VEGFA pathway, which is associated with events such as cerebral hemorrhage and stroke.

In rat studies, GHK-Cu was observed to reduce neurological deficits, limit cerebral edema, and decrease neuronal damage related to miR-339-5p overexpression.

GHK-Cu and Bacteria

In combination with certain fatty acids, GHK-Cu may form complexes exhibiting antimicrobial activity against bacteria and fungi that can interfere with tissue repair. Data from diabetes-related studies suggest that GHK-Cu may contribute to improved healing outcomes, with findings indicating approximately a 40% increase in wound closure and a 27% reduction in infection rates when used alongside standard treatments.[3]

Similar observations have been reported in ischemic wound models, where GHK-Cu appeared to promote healing and reduce inflammatory activity by lowering levels of acute-phase cytokines such as TGF-β and TNF-α.

GHK-Cu and Lungs

Studies in murine models suggest that GHK-Cu may offer protective effects against pulmonary fibrosis.[4] Mechanistic research indicates that the peptide may regulate levels of proinflammatory mediators such as TNF-α and IL-6, both of which influence extracellular matrix dynamics and smooth muscle function in lung tissue.

By reducing pulmonary inflammation, GHK-Cu may support collagen balance and help limit fibrotic changes. The peptide has also shown potential in experimental models of acute respiratory distress syndrome (ARDS), a severe inflammatory lung condition linked to injury or infection. These effects appear to be associated with the downregulation of TNF-α and IL-6 expression.[5]

Additional studies have examined GHK-Cu in models of emphysema induced by cigarette smoke exposure. The peptide appeared to reduce inflammatory markers in lung tissue, including IL-1β and TNF-α in bronchoalveolar lavage fluid, suggesting a possible inhibitory effect on these cytokines.

A reduction in myeloperoxidase (MPO) activity was also observed, indicating a potential role in moderating inflammatory responses. The anti-inflammatory activity of GHK-Cu may involve modulation of the NF-κB signaling pathway, a key regulator of inflammation.

Exposure to GHK-Cu has been associated with decreased NF-κB activation, potentially through changes in IκBα phosphorylation, resulting in reduced expression of downstream inflammatory mediators. Pre-treatment with GHK-Cu may also reduce inducible nitric oxide synthase (i-NOS) levels via similar pathways, further supporting its link to inflammation regulation.[6]

GHK-Cu and Pain Perception

In animal studies, GHK-Cu demonstrated dose-dependent effects on pain-related behaviors. The peptide appeared to exhibit analgesic properties potentially mediated by increased levels of L-lysine, an endogenous compound associated with pain modulation.[7]

Researchers have suggested that the L-lysine component plays a central role in these effects, as similar outcomes were observed when L-lysine was administered independently at comparable concentrations. Additional studies indicate that GHK-Cu may also increase levels of L-arginine, another amino acid linked to analgesic activity.[8]

GHK-Cu and Oxidative Stress

One proposed mechanism suggests that GHK may help regulate iron release from ferritin, a process involved in lipid peroxidation. Data indicates that GHK may reduce the formation of reactive iron complexes in damaged tissues, potentially lowering inflammatory responses.[9]

This mechanism may involve modulation of ferritin-related pathways, with some studies suggesting a reduction in iron release of up to 87%. Such effects may contribute to decreased oxidative stress and inflammation.

A modified form, Pal-GHK, has been reported to further reduce reactive oxygen species and inflammatory cytokines, while potentially enhancing antioxidant enzyme activity. In murine studies, Pal-GHK appeared to inhibit activation of both NF-κB and p38 MAPK signaling pathways, which are key mediators of inflammation and cellular stress responses.[10]

By influencing these pathways, Pal-GHK may reduce inflammatory cell infiltration and decrease the production of TNF-α and IL-6, potentially contributing to reduced tissue damage.

Disclaimer

The products referenced are not intended for human or animal consumption. Research chemicals are strictly designated for laboratory use and/or in vitro experimentation. Any form of bodily administration is prohibited by law. Purchases are restricted to licensed researchers and qualified professionals. All information provided in this article is for educational and informational purposes only.

References

1. Pickart L, Margolina A. Regenerative and Protective Actions of the GHK-Cu Peptide in the Light of the New Gene Data. Int J Mol Sci. 2018 Jul 7;19(7):1987. doi: 10.3390/ijms19071987. PMID: 29986520; PMCID: PMC6073405.
2. Pickart L, Vasquez-Soltero JM, Margolina A. The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline. Brain Sci. 2017 Feb 15;7(2):20. doi: 10.3390/brainsci7020020. PMID: 28212278; PMCID: PMC5332963.
3. Pickart L, Vasquez-Soltero JM, Margolina A. The human tripeptide GHK-Cu in prevention of oxidative stress and degenerative conditions of aging: implications for cognitive health. Oxid Med Cell Longev. 2012;2012:324832. doi: 10.1155/2012/324832. Epub 2012 May 10. PMID: 22666519; PMCID: PMC3359723.
4. Zhou XM, Wang GL, Wang XB, Liu L, Zhang Q, Yin Y, Wang QY, Kang J, Hou G. GHK Peptide Inhibits Bleomycin-Induced Pulmonary Fibrosis in Mice by Suppressing TGFβ1/Smad-Mediated Epithelial-to-Mesenchymal Transition. Front Pharmacol. 2017 Dec 12;8:904. doi: 10.3389/fphar.2017.00904. PMID: 29311918; PMCID: PMC5733019.
5. Park JR, Lee H, Kim SI, Yang SR. The tri-peptide GHK-Cu complex ameliorates lipopolysaccharide-induced acute lung injury in mice. Oncotarget. 2016 Sep 6;7(36):58405-58417. doi: 10.18632/oncotarget.11168. PMID: 27517151; PMCID: PMC5295439.
6. Zhang, Q., Yan, L., Lu, J., & Zhou, X. (2022). Glycyl-L-histidyl-L-lysine-Cu2+ attenuates cigarette smoke-induced pulmonary emphysema and inflammation by reducing oxidative stress pathway. Frontiers in molecular biosciences, 9, 925700. https://doi.org/10.3389/fmolb.2022.925700
7. Sever’yanova LА, Dolgintsev ME. Effects of Tripeptide Gly-His-Lys in Pain-Induced Aggressive-Defensive Behavior in Rats. Bull Exp Biol Med. 2017 Dec;164(2):140-143. doi: 10.1007/s10517-017-3943-3. Epub 2017 Nov 27. PMID: 29181666
8. Sever’yanova LА, Plotnikov DV. Binding of Glyprolines to L-Arginine Inverts Its Analgesic and Antiagressogenic Effects. Bull Exp Biol Med. 2018 Sep;165(5):621-624. doi: 10.1007/s10517-018-4227-2. Epub 2018 Sep 17. PMID: 30225713
9. Miller, D. M., DeSilva, D., Pickart, L., & Aust, S. D. (1990). Effects of glycyl-histidyl-lysyl chelated Cu(II) on ferritin dependent lipid peroxidation. Advances in experimental medicine and biology, 264, 79–84. https://doi.org/10.1007/978-1-4684-5730-8_11
10. Sakuma, S., Ishimura, M., Yuba, Y., Itoh, Y., & Fujimoto, Y. (2018). The peptide glycyl-ʟ-histidyl-ʟ-lysine is an endogenous antioxidant in living organisms, possibly by diminishing hydroxyl and peroxyl radicals. International journal of physiology, pathophysiology and pharmacology, 10(3), 132–138.