FOX04 DRI 2mg 10mg High Purity Peptides: Online Wholesale and Retail Most people learn about senescent cells from a podcast. I learned about them the hard way after pushing my body through the Grand Goals campaign and realizing that physical achievement doesn't mean FOXO4 DRI and FOXO4: Understanding the Differences, Mokiner FOXO4 DRI induces keloid senescent fibroblast apoptosis by promoting nuclear exclusion of upregulated p53 serine 15 phosphorylation Communications Biology The FOXO4 peptide in a DRI conformation (D amino acids in a retro reversed sequence), henceforth named FOXO4 DRI, competes with FOXO4 for p53 binding in a dose dependent manner and doing so with higher affinity.