A variant of the GHRH precursor has been described
Gerischer et al., Sensitization of charge injection into semiconductors with large band gap
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Gene expression: GHK-Cu has been documented to up- or downregulate over 4,000 human genes in cell-culture models, affecting pathways related to inflammation, tissue repair, and antioxidant defense (PMID 29986520)
This stress leads to suppression of forkhead box O1 (FoxO1) signaling and subsequent upregulation of thioredoxin interacting protein, inhibition of insulin and SOD-2 expression, re-expression of Neurog3, and -cell dedifferentiation and functional failure
Gwyer D, Wragg NM, Wilson SL