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Clinicopathological Analysis of miRNA Expression in Breast Cancer Tissues by Using miRNA In Situ Hybridization
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Regulation of breast cancer and bone metastasis by microRNAs

S Vimalraj1, P J Miranda, B Ramyakrishna

  • 1Department of Biotechnology, School of Bioengineering, SRM University, Kattankulathur Tamil Nadu, 603 203, India.

Disease Markers
|November 6, 2013
PubMed

Insights

MicroRNAs (miRNAs) play a key role in breast cancer progression and bone metastasis by regulating gene expression. This review details validated miRNA targets for potential diagnostic and therapeutic applications.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Breast cancer progression, including bone metastasis, involves complex gene expression changes.
  • MicroRNAs (miRNAs) are small noncoding RNAs regulating gene expression posttranscriptionally.
  • Altered miRNA expression is common in breast cancer, with roles as oncogenes or tumor suppressors.

Purpose of the Study:

  • To review experimentally validated targets of dysregulated miRNAs in breast cancer.
  • To summarize miRNA regulation in breast cancer and bone metastasis.
  • To explore the diagnostic and therapeutic potential of miRNAs in breast cancer.

Main Methods:

  • Literature review of studies on miRNA expression and function in breast cancer.
  • Compilation of experimentally validated miRNA targets.
  • Analysis of miRNA regulation in breast cancer and bone metastasis.

Main Results:

  • Identified expression and functional roles for numerous miRNAs (e.g., miR-206, miR-31, miR-21) in breast cancer.
  • Summarized validated targets of both up- and downregulated miRNAs.
  • Highlighted miRNA involvement in breast cancer progression and bone metastasis.

Conclusions:

  • Dysregulated miRNAs are critical in breast cancer and bone metastasis.
  • Validated miRNA targets offer potential for novel diagnostic markers.
  • miRNAs represent promising therapeutic targets for breast cancer treatment.

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