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Published on: August 4, 2019

p73 participates in WWOX-mediated apoptosis in leukemia cells

Donghong Lin1, Zhaolei Cui, Lingying Kong

  • 1Department of Clinical Laboratory, Fujian Medical University, Fuzhou 35004, PR China. lindh65@163.com

International Journal of Molecular Medicine
|March 1, 2013
PubMed

Insights

The WWOX tumor suppressor gene induces leukemia cell death. WWOX interacts with p73 in the cytoplasm, initiating apoptosis without nuclear translocation, revealing a key mechanism in leukemia treatment.

Area of Science:

  • Molecular Biology
  • Cancer Research
  • Cell Biology

Background:

  • The WWOX gene acts as a tumor suppressor, with its protein product (Wwox) involved in various human cancers.
  • WWOX overexpression promotes apoptosis in vitro and inhibits tumor growth in vivo.
  • Previous studies observed WWOX overexpression causing growth arrest in human leukemia cells, but the mechanism remains unclear.

Purpose of the Study:

  • To elucidate the primary mechanisms of WWOX-mediated apoptosis in human leukemia.
  • To investigate the interaction between WWOX and its associated factors p73 and p53 following WWOX overexpression in leukemia cells.

Main Methods:

  • Inducing WWOX overexpression in Jurkat and K562 human leukemia cell lines.
  • Tracing the interactions between WWOX, p73, and p53.
  • Analyzing the subcellular localization of Wwox and p73 interactions.

Main Results:

  • WWOX overexpression was successfully induced in Jurkat and K562 cells.
  • Data revealed that p73 participates in WWOX-mediated apoptosis.
  • The interaction between Wwox and p73 occurred in the cytoplasm, without nuclear translocation.

Conclusions:

  • WWOX-mediated apoptosis in human leukemia involves the participation of p73.
  • The interaction between Wwox and p73 in the cytoplasm is crucial for this apoptotic pathway.
  • Understanding this mechanism could lead to novel therapeutic strategies for leukemia.

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