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Updated: Jun 2, 2026

Induction and Diagnosis of Tumors in Drosophila Imaginal Disc Epithelia
08:14

Induction and Diagnosis of Tumors in Drosophila Imaginal Disc Epithelia

Published on: July 25, 2017

Loss of PI3K blocks cell-cycle progression in a Drosophila tumor model

M Willecke1, J Toggweiler, K Basler

  • 1Institute of Molecular Life Sciences, University of Zurich, Switzerland.

Oncogene
|April 26, 2011
PubMed

Insights

Tumorigenesis requires genetic alterations. Targeting phosphoinositide 3-kinase (PI3K) activity in a Drosophila model significantly inhibited tumor growth by affecting cell-cycle progression, revealing a synthetic vulnerability.

Area of Science:

  • Developmental Biology
  • Genetics
  • Cancer Research

Background:

  • Tumorigenesis is a complex process involving genetic mutations.
  • Identifying genes critical for tumor growth is essential for understanding cancer progression.

Purpose of the Study:

  • To identify genes specifically required for tumor growth using a Drosophila model.
  • To investigate the role of phosphoinositide 3-kinase (PI3K) in tumor development.

Main Methods:

  • Utilized a Drosophila tumor model to screen for genes essential for tumor growth.
  • Assessed the impact of reduced phosphoinositide 3-kinase (PI3K) activity on tumor size and cell-cycle progression.

Main Results:

  • Reduction of PI3K activity led to significantly smaller tumors in the Drosophila model.
  • This inhibition of tumor growth was linked to disruptions in cell-cycle progression.
  • Wild-type tissue growth was only slightly affected by the reduction in PI3K activity.

Conclusions:

  • Tumor cells exhibit a dependency on PI3K function for growth.
  • Reducing PI3K activity provides a synthetic interference strategy against tumor growth.
  • Drosophila genetics is a powerful tool for uncovering vulnerabilities in tumorigenesis.

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