Retraction Note: CD133 and DNA-PK regulate MDR1 via the PI3K- or Akt-NF-κB pathway in multidrug-resistant glioblastoma cells in vitro

The authors wish to retract this paper owing to the use of misidentified cell lines in the study. According to the description on the ATCC official website and reanalysis of the STR for cell line authentication, two misidentified glioblastoma cell lines, U251MG and U373MG, were used in this work.