Peer-Reviewed Research
GHK-Cu is a copper-binding tripeptide studied primarily in laboratory and animal models involving tissue remodeling, inflammatory signaling, oxidative stress, wound repair, skin biology, respiratory disease, and gastrointestinal injury. Recent research remains largely preclinical, so these findings should not be interpreted as established clinical benefits in humans.
Exploring the beneficial effects of GHK-Cu on an experimental model of colitis and the underlying mechanisms
Journal: Frontiers in Pharmacology
Published: 2025
Study Type: Original preclinical research
Summary
Researchers evaluated GHK-Cu in a mouse model of ulcerative colitis and in cultured intestinal cells. GHK-Cu was associated with reduced inflammatory cytokine expression, improved intestinal-barrier markers, increased goblet-cell numbers, and enhanced mucosal repair. The authors linked these findings partly to regulation of the SIRT1/STAT3 signaling pathway.
View on PubMed:
https://pubmed.ncbi.nlm.nih.gov/40672369/
Read Full Text:
https://pmc.ncbi.nlm.nih.gov/articles/PMC12263609/
The glycyl-l-histidyl-l-lysine-Cu2+ tripeptide complex attenuates lung inflammation and fibrosis in silicosis by targeting peroxiredoxin 6
Journal: Redox Biology
Published: 2024
Study Type: Original preclinical research
Summary
This study examined GHK-Cu in a mouse model of silica-induced lung injury and in alveolar macrophage cultures. Treatment reduced oxidative stress, inflammatory changes, and fibrotic remodeling. The researchers identified peroxiredoxin 6 as a molecular target involved in the observed effects.
View on PubMed:
https://pubmed.ncbi.nlm.nih.gov/38879894/
Read Full Text:
https://pmc.ncbi.nlm.nih.gov/articles/PMC11228880/
Tripeptides Ghk and GhkCu-modified silver nanoparticles for enhanced antibacterial and wound healing activities
Journal: Colloids and Surfaces B: Biointerfaces
Published: 2024
Study Type: Original laboratory and preclinical research
Summary
Researchers created silver nanoparticles modified with GHK or GHK-Cu and assessed their antibacterial and wound-repair properties. The formulations demonstrated antibacterial activity, promoted dermal-fibroblast migration and proliferation, and improved several healing measurements in an infected-wound animal model. This study evaluated a nanoparticle formulation rather than GHK-Cu alone.
View on PubMed:
https://pubmed.ncbi.nlm.nih.gov/38387323/
Read Publication:
https://doi.org/10.1016/j.colsurfb.2024.113785
Relief of ovalbumin-induced airway remodeling by the glycyl-l-histidyl-l-lysine-Cu2+ tripeptide complex via activation of SIRT1 in airway epithelial cells
Journal: Biomedicine & Pharmacotherapy
Published: 2023
Study Type: Human observational component with laboratory and animal research
Summary
Researchers first measured circulating GHK levels in people with asthma and found lower levels in participants with fixed airflow limitation. They then studied GHK-Cu in an asthma mouse model and airway epithelial cells. GHK-Cu reduced collagen deposition, mucus secretion, epithelial-mesenchymal transition, and TGF-β1 signaling through activation of SIRT1. The treatment findings were preclinical, not a human treatment trial.
View on PubMed:
https://pubmed.ncbi.nlm.nih.gov/37257226/
Read Publication:
https://doi.org/10.1016/j.biopha.2023.114936
Glycyl-l-histidyl-l-lysine-Cu2+ rescues cigarette smoking-induced skeletal muscle dysfunction through stimulation of SIRT1
Journal: Journal of Cachexia, Sarcopenia and Muscle
Published: 2023
Study Type: Original laboratory and preclinical research
Summary
This study evaluated GHK-Cu in cultured muscle cells exposed to cigarette-smoke extract and in a mouse model of smoking-related skeletal-muscle dysfunction. GHK-Cu was associated with reduced muscle loss, improved mitochondrial markers, lower oxidative stress, and regulation of SIRT1-related signaling.
View on PubMed:
https://pubmed.ncbi.nlm.nih.gov/36905132/
Read Full Text:
https://pmc.ncbi.nlm.nih.gov/articles/PMC10235902/
Synergy of GHK-Cu and hyaluronic acid on collagen IV production in skin fibroblasts
Journal: Journal of Cosmetic Dermatology
Published: 2023
Study Type: Original laboratory research
Summary
Researchers studied GHK-Cu and hyaluronic acid, individually and together, in cultured skin fibroblasts. The combination produced a greater effect on collagen IV synthesis than either ingredient alone under the study conditions. This was an in-vitro study and did not evaluate clinical skin outcomes in people.
View on PubMed:
https://pubmed.ncbi.nlm.nih.gov/37062921/
Read Publication:
https://doi.org/10.1111/jocd.15763
Review Articles
Topically applied GHK as an anti-wrinkle peptide: Advantages, problems and prospective
Journal: BioImpacts
Published: 2024
Study Type: Scientific review
Summary
This review discusses the proposed skin-remodeling effects of GHK and GHK-Cu, along with formulation challenges involving stability and skin penetration. It also examines delivery technologies intended to improve topical absorption. This is a review article rather than a new clinical trial.
View on PubMed:
https://pubmed.ncbi.nlm.nih.gov/39963574/
Liposomes as Carriers of GHK-Cu Tripeptide for Cosmetic Application
Journal: Pharmaceutics
Published: 2023
Study Type: Formulation and laboratory research
Summary
This study developed liposomal delivery systems containing GHK-Cu and evaluated their physical characteristics, peptide encapsulation, and laboratory effects on elastase and tyrosinase activity. The paper focuses on formulation science and cosmetic-delivery potential rather than clinical effectiveness.
View on PubMed:
https://pubmed.ncbi.nlm.nih.gov/37896245/
Additional GHK-Cu Publications
Browse current PubMed research:
https://pubmed.ncbi.nlm.nih.gov/?term=%22GHK-Cu%22
Research Disclaimer
This Research Library summarizes published scientific literature for educational purposes only. Pearland Peptides products are intended For Research Use Only and are not for human consumption or medical use.