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(5) Yu-Xiang Kong, Zhi-Shuai Li, Yuan-Bo Liu, Bo Pan, et al (2025) FOXO4-DRI induces keloid senescent fibroblast apoptosis by promoting nuclear exclusion of upregulated p53-serine 15 phosphorylation Communications Biology, volume 8, Article number: 299 (2025)
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MMPs normally regulate collagen degradation, with MMP-1 specifically implicated in the initiation of collagen fragmentation. A 2024 study found that elevated MMP-1 levels contribute to aging skin, causing in mice: A 2016 study showed that GHK-Cu significantly increased gene expression of MMP-1 and MMP-2 at the lowest concentration. Researchers attributed this as one mechanism by which the peptide increased collagen and elastin production
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