WIPI1 is a core component of the autophagy machinery that regulates intracellular degradation through autophagosome formation and lysosomal delivery 12. WIPI1 functions downstream of ULK1 and PI3-kinase signaling, binding phosphatidylinositol 3-phosphate (PtdIns3P) at phagophore assembly sites on endoplasmic reticulum membranes 3. There, it recruits the ATG12-ATG5-ATG16L1 complex to promote autophagosomal membrane elongation and coordinates lipid transfer via ATG2-mediated mechanisms 34. WIPI1 participates in starvation-induced autophagy, mitophagy, and xenophagy of Staphylococcus aureus 35. Beyond canonical autophagy, WIPI1 regulates melanogenic enzyme transcription and melanosome maturation through TORC1 inhibition, independent of starvation-induced autophagy 6. Dysregulation of WIPI1 contributes to disease pathogenesis: reduced WIPI1 expression associates with type 2 diabetes risk through impaired insulin secretion 78, while WIPI1 downregulation may paradoxically attenuate septic acute lung injury via autophagy activation 9. WIPI1 expression is transcriptionally controlled by the ABL-ERK-MYC signaling axis, linking its autophagy-enhancing function to lifespan regulation 10.