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Long non-coding RNA (LncRNA) RMST in triple-negative breast cancer (TNBC): Expression analysis and biological roles

Li Wang1, Dequan Liu2, Xingrao Wu1

  • 1Department of Radiation Oncology, Yunnan Cancer Hospital and The Third Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China.

Journal of Cellular Physiology
|December 8, 2017
PubMed

Insights

Long non-coding RNA RMST acts as a tumor suppressor in triple-negative breast cancer (TNBC). RMST inhibits cell proliferation and migration while enhancing apoptosis, suggesting therapeutic potential.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Triple-negative breast cancer (TNBC) is an aggressive subtype with limited targeted therapies.
  • Long non-coding RNAs (lncRNAs) are increasingly recognized for their roles in cancer development and progression.
  • The expression and function of lncRNA RMST in TNBC remain largely unexplored.

Purpose of the Study:

  • To investigate the expression profile of lncRNA RMST in TNBC.
  • To elucidate the biological functions of RMST in TNBC cell lines.
  • To determine the potential of RMST as a therapeutic target in TNBC.

Main Methods:

  • Microarray analysis to screen differentially expressed lncRNAs in TNBC.
  • Quantitative reverse transcription polymerase chain reaction (QRT-PCR) for RMST expression analysis.
  • Cell proliferation assays (CCK-8, colony formation), apoptosis assays (TUNEL), cell cycle analysis (FCM), and invasion/migration assays (Transwell) were performed on RMST-transfected TNBC cells.

Main Results:

  • RMST was found to be differentially expressed in TNBC tissues.
  • Overexpression of RMST significantly inhibited TNBC cell proliferation, invasion, and migration.
  • RMST promoted cell apoptosis and induced G0/G1 phase arrest in TNBC cells.
  • RMST exerts its function by regulating mRNA or protein expression in the cytoplasm.

Conclusions:

  • RMST functions as a tumor suppressor in triple-negative breast cancer.
  • RMST inhibits proliferation, invasion, and migration while promoting apoptosis in TNBC.
  • RMST holds potential as a therapeutic target for TNBC treatment.
Keywords:
TNBClncRNA RMST

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