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miR-146b-5p inhibits glioma migration and invasion by targeting MMP16

Yanyan Li1, Ying Wang, Lin Yu

  • 1Dept. of Neuropathology, Tianjin Neurologic Institute, Tianjin Medical University General Hospital, Tianjin 300052, China; Tianjin Key Laboratory of Injuries, Variations and Regeneration of the Nervous System, Tianjin 300052, China; Key Laboratory of Post-trauma Neuro-repair and Regeneration in Central Nervous System, Ministry of Education, Tianjin 300052, China.

Cancer Letters
|June 26, 2013
PubMed

Insights

MicroRNA-146b-5p (miR-146b-5p) is often decreased in gliomas, correlating with chromosome 10q loss. Restoring miR-146b-5p inhibits glioblastoma cell migration and invasion by targeting MMP16 and MMP2.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • MicroRNA-146b-5p (miR-146b-5p) is frequently downregulated in various solid tumors.
  • Its tumor-suppressive role in malignant gliomas remains underexplored.
  • Glioblastomas often exhibit alterations on chromosome 10q.

Purpose of the Study:

  • To investigate the role of miR-146b-5p in glioblastoma.
  • To explore the correlation between miR-146b-5p expression and chromosome 10q loss in gliomas.
  • To determine the impact of miR-146b-5p restoration on glioblastoma cell behavior.

Main Methods:

  • Analysis of miR-146b-5p expression levels in gliomas.
  • Correlation study with chromosome 10q loss.
  • Overexpression of miR-146b-5p in glioblastoma cell lines.
  • Assessment of MMP16 mRNA and MMP2 activity.
  • Evaluation of tumor cell migration and invasion assays.

Main Results:

  • Decreased miR-146b-5p expression strongly correlates with chromosome 10q loss in gliomas, particularly glioblastomas.
  • Overexpression of miR-146b-5p resulted in MMP16 mRNA silencing.
  • miR-146b-5p restoration led to MMP2 inactivation.
  • Inhibition of glioblastoma cell migration and invasion was observed.

Conclusions:

  • miR-146b-5p plays a tumor-suppressive role in malignant gliomas.
  • Restoring miR-146b-5p expression may be a potential therapeutic strategy.
  • Targeting miR-146b-5p could inhibit glioblastoma progression by affecting MMP16 and MMP2 pathways.
Keywords:
GliomasInvasionMMP16MigrationmiR-146b-5p

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