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NF-B activation by peroxynitrite through IB-dependent phosphorylation versus nitration in colon cancer cells

Copper-Mediated Matrix Remodeling and Gene Expression GHK-Cu promotes extracellular matrix synthesis and remodeling through copper-dependent enzymatic activation and broad genomic effects[4]: Stimulation of collagen and elastin synthesis in fibroblasts Activation of lysyl oxidase for collagen cross-linking Enhanced production of glycosaminoglycans and decorin Modulation of metalloproteinase activity for controlled matrix breakdown Gene expression changes affecting over 30% of human genes , resetting cellular programs toward regenerative states The copper ion serves as an essential cofactor for enzymes involved in collagen synthesis and provides antioxidant protection through superoxide dismutase activation, while the peptide itself influences gene transcription to support healing

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Their carbohydrate skeletons can either enter the citric acid cycle as substrates for energy production or be utilized to synthesis glucoses and fatty acids (Murray et al., 2012)

Next, molecular docking analysis was conducted to investigate whether GHK-Cu directly interacts with SIRT1