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Updated: May 31, 2026

Profiling of Estrogen-regulated MicroRNAs in Breast Cancer Cells
16:24

Profiling of Estrogen-regulated MicroRNAs in Breast Cancer Cells

Published on: February 21, 2014

MicroRNAs dysregulated in breast cancer preferentially target key oncogenic pathways

Weng Khong Lim1, Gos Micklem

  • 1Cambridge Systems Biology Institute, University of Cambridge, Tennis Court Road, Cambridge CB2 1QR, United Kingdom. wkl24@cam.ac.uk

Molecular Biosystems
|July 19, 2011
PubMed

Insights

Dysregulated microRNAs (miRNAs) in breast cancer impact key oncogenic pathways. This study integrates miRNA and mRNA data to identify specific miRNA-pathway interactions driving cancer progression.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • MicroRNA (miRNA) dysregulation is implicated in various cancers, including breast cancer.
  • Altered miRNA expression can disrupt cellular pathways, contributing to oncogenesis.

Purpose of the Study:

  • To investigate the relationship between dysregulated miRNAs and specific pathways in breast cancer.
  • To identify miRNAs that target genes differentially expressed in breast cancer.

Main Methods:

  • Integration of miRNA and mRNA expression data from breast cancer and normal tissues.
  • Selection of dysregulated miRNAs targeting differentially expressed genes.
  • Analysis of targeted canonical oncogenic pathways.

Main Results:

  • A subset of dysregulated miRNAs was identified as targeting key oncogenic pathways.
  • These pathways include p53 signaling, MAPK signaling, TGFβ signaling, focal adhesion, and cell cycle progression.
  • miRNA dysregulation affects both gene expression and critical oncogenic pathways in breast cancer.

Conclusions:

  • Dysregulated miRNAs play a significant role in perturbing multiple oncogenic pathways in breast cancer.
  • Targeting these miRNA-pathway interactions could offer novel therapeutic strategies for breast cancer.

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