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Systemic mirnas as potential biomarkers for malignancy

N A Healy1, H M Heneghan, N Miller

  • 1Discipline of Surgery, National University of Ireland, Galway, Republic of Ireland. nuala.healy@nuigalway.ie

International Journal of Cancer
|May 24, 2012
PubMed

Insights

Circulating microRNAs (miRNAs) show altered expression in breast cancer, offering potential as minimally invasive predictive markers. This review examines their role in malignancy and future diagnostic applications.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Oncology

Background:

  • MicroRNAs (miRNAs) are short, endogenous RNA molecules regulating gene expression.
  • miRNAs are involved in cellular processes like differentiation, growth, and apoptosis, and are implicated in cancer.
  • Altered miRNA expression is detected in tumor tissues and the circulation of cancer patients.

Purpose of the Study:

  • To review systemic miRNAs (upregulated or downregulated) in malignancy.
  • To investigate the impact of treatment on circulating miRNA levels.
  • To explore the origin of circulating miRNAs and their potential as prognostic or predictive cancer markers.

Main Methods:

  • Literature review of studies on circulating miRNAs in breast cancer.
  • Analysis of miRNA expression profiles in cancer patients versus healthy individuals.
  • Examination of research on miRNA dysregulation in various cancer types.

Main Results:

  • miRNAs are detectable and dysregulated in the circulation of breast cancer patients.
  • Systemic miRNAs can be upregulated or downregulated in malignancy.
  • Circulating miRNAs hold potential as minimally invasive predictive markers for breast cancer.

Conclusions:

  • Circulating miRNAs represent promising biomarkers for early cancer detection.
  • Further research is needed to understand the source and precise role of circulating miRNAs.
  • These molecules may significantly impact future cancer diagnostics and prognostics.

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