WAVE1 regulates P-glycoprotein expression via Ezrin in leukemia cells

Ming Hua Yang, Ming Yi Zhao, Zhuo Wang, Rui Kang, Yu Lei He, Xiao Cheng Yin, Li Ying Liu, Liang Chun Yang, Cai Xia Zhan, Xiu Shan Wu, Dao Lin Tang, Li Zhi Cao

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


For children with acute myeloblastic leukemia (AML), multidrug resistance (MDR) reduces treatment effectiveness, and often leads to poor patient survival. While a number of factors have been described that affect MDR, the mechanisms underlying this effect remain unclear. In this study, the role of WAVE1 in MDR was investigated. Among 62 children with AML, high levels of WAVE1 were associated with poor patient outcomes. Proteomic techniques were used to identify novel WAVE1-interacting proteins from leukemia cells, one of which was the cytoskeleton regulator Ezrin. In leukemia cells, WAVE1 co-localized with both Ezrin and P-glycoprotein (P-gp), a critical regulator of the MDR phenotype. Overexpression of WAVE1 in K562 leukemia cells up-regulated P-gp and Ezrin, and reduced K562 cells' sensitivity to the chemotherapy drug adriamycin. The opposite effect was seen when WAVE1 expression was reduced via RNA interference. Critically, overexpression of WAVE1 in the absence of Ezrin did not affect P-gp levels or MDR. These data suggest that WAVE1 affects P-gp and MDR of leukemia cells through Ezrin.

Original languageEnglish (US)
Pages (from-to)298-309
Number of pages12
JournalLeukemia and Lymphoma
Issue number2
StatePublished - Feb 2011
Externally publishedYes


  • Ezrin
  • P-glycoprotein
  • WAVE1
  • drug resistance

ASJC Scopus subject areas

  • Hematology
  • Oncology
  • Cancer Research


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