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Updated: Dec 24, 2025

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ABCC4/MRP4 contributes to the aggressiveness of Myc-associated epithelial ovarian cancer

Moonsun Jung1,2, Jixuan Gao1, Leanna Cheung1

  • 1Children's Cancer Institute Australia, Lowy Cancer Research Centre, UNSW Australia, Kensington, New South Wales, Australia.

International Journal of Cancer
|April 12, 2020
PubMed

Insights

High expression of ATP-binding cassette subfamily C member 4 (ABCC4/MRP4) correlates with poor outcomes in ovarian cancer subtypes. Suppressing MRP4 reduced tumor growth and invasion, identifying it as a potential therapeutic target.

Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • Epithelial ovarian cancer (EOC) is a heterogeneous disease with poor survival rates.
  • ATP-binding cassette (ABC) transporters, like ABCC4/MRP4, are implicated in drug resistance and cancer progression.
  • Targeting specific molecular pathways is crucial for developing effective EOC treatments.

Purpose of the Study:

  • To investigate the association of ABCC4/MRP4 expression with clinical outcomes in EOC subtypes.
  • To elucidate the biological function of ABCC4/MRP4 in endometrioid and serous EOC.
  • To evaluate ABCC4/MRP4 as a potential therapeutic target in EOC.

Main Methods:

  • Analysis of ABCC4/MRP4 expression in relation to patient prognosis.
  • siRNA-mediated suppression of MRP4 in EOC cell lines.
  • Assessment of cell growth, migration, and invasion following MRP4 knockdown.
  • Evaluation of drug sensitivity in MRP4-suppressed cells.
  • In vivo studies using patient-derived EOC cells.

Main Results:

  • High ABCC4/MRP4 expression is linked to poor prognosis in endometrioid EOC and a subset of serous EOC (high-MYCN profile).
  • MRP4 suppression reduced EOC cell growth, migration, and invasion, particularly in endometrioid and C5-like serous subtypes.
  • Knockdown of MRP4 increased sensitivity to MRP4 substrate drugs in endometrioid EOC cells.
  • In vivo, MRP4 suppression inhibited the growth of patient-derived EOC xenografts.

Conclusions:

  • ABCC4/MRP4 plays a significant role in the biology of Myc-associated ovarian tumors.
  • MRP4 is a potential therapeutic target for specific subtypes of epithelial ovarian cancer.
  • Targeting MRP4 may offer a novel strategy to improve treatment outcomes for EOC patients.
Keywords:
ABCC4/MRP4Myc-driven cancersepithelial ovarian cancernovel therapeutic targets

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