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Updated: Sep 23, 2025

Author Spotlight: Unveiling the Role of TMOD3 in Platinum Resistance and Immune Infiltration in Ovarian Cancer
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Author Spotlight: Unveiling the Role of TMOD3 in Platinum Resistance and Immune Infiltration in Ovarian Cancer

Published on: August 2, 2024

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Novel MicroRNA-Regulated Transcript Networks Are Associated with Chemotherapy Response in Ovarian Cancer

Danai G Topouza1, Jihoon Choi1, Sean Nesdoly2

  • 1Department of Biomedical and Molecular Sciences, Queen's University, 18 Stuart St., Kingston, ON K7L 3N6, Canada.

International Journal of Molecular Sciences
|May 14, 2022
PubMed

Insights

Researchers identified novel microRNA and mRNA networks linked to platinum chemotherapy resistance in high-grade serous ovarian cancer (HGSOC). These findings offer new insights into ovarian cancer treatment resistance mechanisms.

Area of Science:

  • Oncology
  • Genomics
  • Molecular Biology

Background:

  • High-grade serous ovarian cancer (HGSOC) is a leading cause of cancer death.
  • Platinum-based chemotherapy resistance affects 20% of HGSOC patients, highlighting an urgent need to understand underlying mechanisms.

Purpose of the Study:

  • To uncover novel biological mechanisms and transcriptional networks driving chemotherapy resistance in HGSOC.
  • To generate new hypotheses regarding the molecular basis of platinum resistance in ovarian cancer.

Main Methods:

  • Differential expression analysis of mRNA and microRNA sequencing data from The Cancer Genome Atlas (TCGA) HGSOC cohort.
  • Coexpression network analysis to identify key biological pathways and regulatory interactions.
  • Replication of identified network modules in independent ovarian cancer patient cohorts.
  • Integrative analysis of sequencing data with single-nucleotide polymorphisms (SNPs).

Main Results:

  • Identified 21 microRNAs associated with angiogenesis and 196 mRNAs linked to adaptive immunity and translation.
  • Discovered three microRNA networks (lipoprotein transport, oncogenic pathways) and two mRNA networks (ubiquitination, lipid metabolism) associated with chemotherapy response.
  • Validated these network modules across independent cohorts.
  • Revealed potential microRNA and SNP regulation of key mRNA transcripts.

Conclusions:

  • Reported novel transcriptional networks and biological pathways implicated in platinum chemotherapy resistance in HGSOC.
  • Expanded understanding of the molecular effectors and regulators influencing chemotherapy response in ovarian cancer.
  • Findings provide a foundation for improving ovarian cancer management strategies.
Keywords:
The Cancer Genome Atlascoexpression network analysisdifferential expression analysisexpression quantitative trait locihigh-grade serous ovarian cancermicroRNAsplatinum-based chemotherapy resistance

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