Related Experiment Video

Updated: Sep 19, 2025

Sequencing Small Non-coding RNA from Formalin-fixed Tissues and Serum-derived Exosomes from Castration-resistant Prostate Cancer Patients
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Sequencing Small Non-coding RNA from Formalin-fixed Tissues and Serum-derived Exosomes from Castration-resistant Prostate Cancer Patients

Published on: November 19, 2019

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A Super-Enhancer-Driven Transcriptional Regulatory Circuit Underlying Abiraterone Resistance in Castration-Resistant

Liling Jiang1,2, Jiamin Wang3, Guanjie Peng1,4

  • 1Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, Sino-French Hoffmann Institute, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, Guangdong, 511436, P. R. China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|June 5, 2025
PubMed

Insights

A new study identifies a BCL6, NFIB, and SMAD3 circuit driving resistance to Abiraterone treatment in castration-resistant prostate cancer (CRPC). This discovery offers potential strategies to overcome treatment failure and improve patient survival.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Castration-resistant prostate cancer (CRPC) is a major cause of cancer mortality.
  • Abiraterone, an androgen receptor (AR) pathway inhibitor, improves survival but resistance develops.
  • Understanding resistance mechanisms is crucial for improving CRPC treatment outcomes.

Purpose of the Study:

  • To identify the molecular mechanisms driving Abiraterone resistance in CRPC.
  • To investigate the role of super-enhancers (SEs) in regulating resistance pathways.
  • To uncover potential therapeutic targets for overcoming Abiraterone resistance.

Main Methods:

  • Analysis of SE expression profiles in Abiraterone-resistant CRPC cells and parental cells.
  • Identification of key transcriptional regulators involved in resistance.
  • Investigation of the functional roles of identified regulators in cellular pathways.

Main Results:

  • A novel SE-driven transcriptional circuit involving BCL6, NFIB, and SMAD3 was identified.
  • This circuit is upregulated in Abiraterone-resistant CRPC cells.
  • BCL6, NFIB, and SMAD3 synergistically regulate cholesterol biosynthesis and cell cycle pathways, promoting resistance.

Conclusions:

  • The BCL6-NFIB-SMAD3 circuit is a key driver of Abiraterone resistance in CRPC.
  • Targeting this circuit may offer a strategy to resensitize CRPC to Abiraterone therapy.
  • These findings provide critical insights for developing novel therapeutic approaches to improve CRPC patient outcomes.
Keywords:
abiraterone resistancecastration‐resistant prostate cancertranscriptional regulation

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