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Purpose To illustrate the mechanism of IAPs sustain the properties of NPC cancer stem-like cells and identificate the potent of targeting IAPs in the therapy of NPC.Method FACS was used to sort SP cells.Suspension culture assay was performed to detect nasosphere.Western-blot was used to detect the levels of proteins.Immunoprecipitation was employed to determine the protein-protein interactions.Molecular cloning and lipofectamine transfection technology was used to Plasmid construction, transfection and RNA Interference.