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ZAK Inhibitor PLX4720 Promotes Extrusion of Transformed Cells via Cell Competition.

Takeshi Maruyama1, Ayana Sasaki2, Sayuri Iijima2

  • 1Division of Molecular Oncology, Institute for Genetic Medicine, Hokkaido University Graduate School of Chemical Sciences and Engineering, Sapporo 060-0815, Japan; Waseda Institute for Advanced Study, Waseda University, Tokyo 169-8050, Japan.

Iscience
|July 21, 2020
PubMed
Summary

This study found that PLX4720 promotes the elimination of precancerous cells through cell competition. Targeting ZAK enhances this process, offering a new approach for cancer prevention.

Keywords:
Biological SciencesCancerChemistry

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Area of Science:

  • Oncology
  • Cell Biology
  • Pharmacology

Background:

  • Carcinogenesis involves the elimination of transformed cells via cell competition.
  • Understanding this process is crucial for developing cancer prevention strategies.

Purpose of the Study:

  • To identify chemical compounds that promote the elimination of transformed cells through cell competition.
  • To investigate the role of ZAK in cell competition and its modulation by PLX4720.

Main Methods:

  • High-throughput screening of chemical compounds using cultured epithelial cells.
  • Confocal microscopy to observe apical extrusion of transformed cells.
  • In vitro and in vivo experiments involving gene knockdown/knockout and drug treatment.

Main Results:

  • PLX4720 was identified as a compound promoting apical extrusion of RasV12-transformed cells.
  • Knockdown/knockout of ZAK enhanced the apical elimination of transformed cells.
  • PLX4720 treatment suppressed tumor formation in vivo.

Conclusions:

  • PLX4720 facilitates the apical elimination of transformed cells via cell competition in vivo.
  • Targeting ZAK enhances this elimination process.
  • This study presents a novel strategy for cancer preventive medicine by leveraging cell competition.