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Chemo-resistance of A172 glioblastoma cells is controlled by miR-1271-regulated Bcl-2

Li Yang1, Yue Wang2, Ya-Jing Li1

  • 1Affiliated Longhua Central Hospital, Guangdong Medical University, Shenzhen, 518110, China.

Biomedicine & Pharmacotherapy = Biomedecine & Pharmacotherapie
|September 25, 2018
PubMed

Insights

MicroRNAs (miRNAs) play a role in glioblastoma. Lower miR-1271 levels correlate with poorer survival and chemo-resistance, suggesting miR-1271 as a potential therapeutic target for glioblastoma multiforme (GBM).

Area of Science:

  • Molecular Biology
  • Oncology
  • Genetics

Background:

  • MicroRNAs (miRNAs) are implicated in glioblastoma multiforme (GBM) development, progression, and metastasis.
  • Glioblastoma multiforme (GBM) is an aggressive brain tumor with limited treatment options.
  • Bcl-2 is a protein often overexpressed in cancers, contributing to cell survival.

Purpose of the Study:

  • To investigate the regulatory role of miR-1271 in the development of glioblastoma multiforme (GBM).
  • To determine the relationship between miR-1271, Bcl-2, and patient outcomes in GBM.

Main Methods:

  • Quantification of miR-1271 and Bcl-2 levels in GBM patient samples and normal tissues.
  • Correlation analysis between miR-1271 levels, Bcl-2 levels, and patient overall survival.
  • In vitro experiments involving overexpression and depletion of miR-1271 in GBM cells to assess chemo-resistance mediated by Bcl-2.

Main Results:

  • miR-1271 levels were significantly decreased in GBM samples compared to normal tissues.
  • miR-1271 levels were inversely correlated with Bcl-2 levels, which were elevated in GBM.
  • Low miR-1271 levels were associated with poorer overall survival and increased chemo-resistance in GBM cells.

Conclusions:

  • miR-1271 acts as a tumor suppressor in GBM by targeting Bcl-2.
  • Suppression of miR-1271 promotes chemo-resistance in GBM cells via Bcl-2-mediated cell survival.
  • Overexpression of miR-1271 could potentially improve the prognosis of GBM patients undergoing chemotherapy.
Keywords:
ApoptosisBcl-2Glioblastoma multiforme (GBM)miR-1271

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