Related Experiment Video

Updated: Nov 19, 2025

Prostate Organoid Cultures as Tools to Translate Genotypes and Mutational Profiles to Pharmacological Responses
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Prostate Organoid Cultures as Tools to Translate Genotypes and Mutational Profiles to Pharmacological Responses

Published on: October 24, 2019

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Dual functions of SPOP and ERG dictate androgen therapy responses in prostate cancer

Tiziano Bernasocchi1,2, Geniver El Tekle1,2, Marco Bolis1

  • 1Institute of Oncology Research, Faculty of Biomedical Sciences, Università della Svizzera italiana, 6500, Bellinzona, TI, Switzerland.

Nature Communications
|February 3, 2021
PubMed

Insights

Mutually exclusive prostate cancer drivers ERG and SPOP mutations are antagonistic, not overlapping. Their opposing functions in SPOP dictate therapeutic response, offering new treatment strategies.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Mutually exclusive driver gene mutations in cancer are often assumed to have overlapping functions.
  • The ERG transcription factor and SPOP ubiquitin ligase adaptor are frequently altered together in prostate cancer.

Purpose of the Study:

  • To investigate the functional relationship between ERG and SPOP alterations in prostate cancer.
  • To elucidate the molecular mechanisms underlying their interaction and its impact on tumorigenesis and therapy.

Main Methods:

  • Analysis of prostate cancer genomes and mutation patterns.
  • Molecular studies on ERG, SPOP, ZMYND11, and androgen receptor (AR) signaling pathways.
  • Assessment of therapeutic responses in relation to SPOP and ERG status.

Main Results:

  • ERG and SPOP alterations are synthetically sick, exhibiting antagonistic roles rather than overlapping functions.
  • ERG upregulates wild-type SPOP to degrade ZMYND11, suppressing AR signaling. SPOP mutations stabilize ZMYND11, repressing ERG and activating AR signaling.
  • This molecular dichotomy influences sensitivity to different androgen receptor pathway therapies.

Conclusions:

  • Prostate cancer harbors a distinct class of antagonistic cancer drivers (ERG and SPOP).
  • Understanding these antagonistic interactions provides a framework for targeted therapeutic strategies exploiting these pathways.

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