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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

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Meta-analysis of the differentially expressed breast cancer-related microRNA expression profiles

J Wu1, P Lu, T Yang

  • 1Breast Cancer Diagnosis and Treatment Center Henan.

Journal of Obstetrics and Gynaecology : the Journal of the Institute of Obstetrics and Gynaecology
|June 13, 2014
PubMed

Insights

Altered microRNA (miRNA) levels are linked to breast cancer development. These findings suggest specific miRNAs could serve as novel, non-invasive biomarkers for early breast cancer detection.

Area of Science:

  • Molecular Biology
  • Genetics
  • Oncology

Background:

  • MicroRNAs (miRNAs) are non-coding RNA molecules crucial for gene expression regulation in cancer.
  • Dysregulation of miRNAs is implicated in the development and progression of various cancers, including breast cancer.

Purpose of the Study:

  • To identify overlapping differentially expressed miRNAs (DEmiRNAs) associated with breast cancer using meta-analysis.
  • To predict the functional roles of target genes regulated by these DEmiRNAs.
  • To explore the potential of miRNAs as non-invasive biomarkers for early breast cancer detection.

Main Methods:

  • Meta-analysis of three studies to identify overlapping DEmiRNAs.
  • Utilized miRanda tool to predict target genes of overlapping DEmiRNAs.
  • Employed Gene Ontology (GO) and KEGG pathway analysis to predict target gene functions.

Main Results:

  • Identified seven overlapping DEmiRNAs significantly associated with breast cancer.
  • Discovered six over-represented GO terms closely related to breast cancer.
  • KEGG pathway analysis revealed seven key target genes involved in the Wnt signaling pathway (p = 0.0002).

Conclusions:

  • Altered miRNA expression patterns are significantly associated with breast cancer.
  • The identified miRNAs and their target genes, particularly within the Wnt signaling pathway, offer insights into breast cancer pathogenesis.
  • These findings highlight the potential of miRNAs as novel, non-invasive biomarkers for early breast cancer detection.
Keywords:
Breast cancerdifferentially expressed miRNAmeta-analysissignalling pathway

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