Frontiers Senolytic Peptide FOXO4 DRI Selectively Removes Senescent Cells From in vitro Expanded Human Chondrocytes FOXO4 DRI induces keloid senescent fibroblast apoptosis by promoting nuclear exclusion of upregulated p53 serine 15 phosphorylation Communications Biology FOXO4 DRI alleviates age related testosterone secretion insufficiency by targeting senescent Leydig cells in aged mice Aging 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. FOXO4 DRI Beverly Hills Rejuvenation Center FOXO4 DRI alleviates age related testosterone secretion insufficiency by targeting senescent Leydig cells in aged mice Aging