Source: Pickart L. et al., International Journal of Molecular Sciences, 2018, PMC6073405
To analyze the regenerative and protective effects of GHK-Cu (glycyl-histidyl-lysine bound to copper) by combining data from new genetic studies and classical biological observations. The goal is to determine how the peptide affects the expression of genes involved in tissue repair, anti-inflammatory processes, antioxidant defense, and aging.
GHK-Cu is a natural tripeptide present in human plasma and tissues, involved in regenerative processes and cellular protection. This review summarizes the new data on its molecular mechanisms and potential in medicine and cosmetology.
Type: review study with analysis of gene expression (microarray data) and preclinical models
Scope: skin tissue, liver, nervous system, gastrointestinal tract, pulmonary and bone cells
Methods:
Comparative analysis of genes regulated by GHK-Cu
Review of published data on biological effects – wound healing, angiogenesis, neuroprotection
Identification of signaling pathways (NF-κB, TGF-β, antioxidant enzymes)
Gene Regulation
GHK-Cu regulates the expression of over 4000 genes, restoring youthful expression patterns.
Activates genes related to DNA repair, antioxidant defense, and cellular regeneration.
Suppresses pro-inflammatory genes and signaling through NF-κB, IL-6, and TNF-α.
Regeneration and Healing
GHK-Cu stimulates the synthesis of collagen, elastin, and glycosaminoglycans in dermal fibroblasts.
Accelerates the healing of skin wounds and ulcers, including in diabetic models.
Improves connective tissue remodeling and epithelialization.
Anti-inflammatory and Antioxidant Effects
Reduces inflammatory cytokines TNF-α, IL-1β, and IL-6.
Stimulates antioxidant enzymes (SOD, catalase, glutathione peroxidase).
Protects cells from oxidative stress and DNA damage.
Neuroprotection and Angiogenesis
Supports angiogenesis by increasing VEGF and stimulating endothelial cells.
Stimulates neuroregeneration and neurite growth in nerve injury models.
Behavioral and Systemic Effects
Demonstrates anxiolytic and analgesic effects in animal models.
Improves adaptation to stress and physical activity.
Safety
GHK-Cu has an excellent safety profile with topical application and low systemic doses.
Widely used in cosmetic formulations with no reported serious side effects.
GHK-Cu possesses broad-spectrum regenerative, antioxidant, and anti-inflammatory properties.
Regulates a large number of genes restoring cellular function and tissue structure.
Shows potential for applications in anti-aging therapies, wound care, neuroregeneration, and cosmetology.
Data is mostly in vitro and preclinical; limited clinical studies.
Optimal doses and routes for systemic administration have not been determined.
GHK-Cu is a promising peptide with proven effects on regeneration and cellular protection.
Suitable for research in the field of tissue repair, aging, and dermatology.
Clinical studies are needed to confirm long-term safety and efficacy.