DDX53 Regulates Cancer Stem Cell-Like Properties by Binding to SOX-2

  • Kim, Youngmi (Department of Biochemistry, Kangwon National University) ;
  • Yeon, Minjeong (Department of Biochemistry, Kangwon National University) ;
  • Jeoung, Dooil (Department of Biochemistry, Kangwon National University)
  • Received : 2017.01.04
  • Accepted : 2017.04.14
  • Published : 2017.05.31


This study investigated the role of cancer/testis antigen DDX53 in regulating cancer stem cell-like properties. DDX53 shows co-expression with CD133, a marker for cancer stem cells. DDX53 directly regulates the SOX-2 expression in anti-cancer drug-resistant $Malme3M^R$ cells. DDX53 and miR-200b were found to be involved in the regulation of tumor spheroid forming potential of Malme3M and $Malme3M^R$ cells. Furthermore, the self-renewal activity and the tumorigenic potential of $Malme3M^R$-CD133 (+) cells were also regulated by DDX53. A miR-200b inhibitor induced the direct regulation of SOX-2 by DDX53 We therefore, conclude that DDX53 may serve as an immunotherapeutic target for regulating cancer stem-like properties of melanomas.


Supported by : National Research Foundation, Kangwon National University


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