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MicroRNA-1226-3p has a tumor-promoting role in osteosarcoma

Yong Li1, Dai Song2, Ting An3

  • 1Department of Orthopedics, Sixth Medical Center of the PLA General Hospital, Beijing 100048, P.R. China.

Oncology Letters
|April 28, 2021
PubMed

Insights

MicroRNA (miRNA) miR-1226-3p promotes osteosarcoma cell growth. Inhibiting miR-1226-3p in bone cancer cells reduced proliferation and increased cell death, suggesting a new therapeutic target.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Osteosarcoma is a common bone cancer in adolescents and young adults, accounting for 10% of solid tumors in this age group.
  • MicroRNA (miRNA) dysregulation is implicated in the molecular pathogenesis of osteosarcoma.

Purpose of the Study:

  • To investigate the role of a novel miRNA, miR-1226-3p, in osteosarcoma.
  • To determine the functional impact of miR-1226-3p on osteosarcoma cell proliferation and apoptosis.
  • To identify the molecular targets of miR-1226-3p in osteosarcoma.

Main Methods:

  • Transfection of human osteosarcoma SaOS-2 cells with miR-1226-3p mimics and antisense oligonucleotides.
  • Assessment of cell apoptosis using a dead cell apoptosis kit.
  • Analysis of TNF receptor-associated factor 3 (TRAF3) protein expression via western blotting.
  • Bioinformatics and clinical specimen analyses.

Main Results:

  • Higher miR-1226-3p expression levels correlated with reduced survival rates in osteosarcoma patients.
  • miR-1226-3p overexpression promoted proliferation in SaOS-2 cells.
  • Inhibition of miR-1226-3p decreased cell proliferation and increased apoptosis in SaOS-2 cells.
  • miR-1226-3p was found to target TRAF3 in osteosarcoma cells.

Conclusions:

  • miR-1226-3p plays a significant role in promoting osteosarcoma cell proliferation.
  • miR-1226-3p may serve as a potential therapeutic target for osteosarcoma treatment.
Keywords:
apoptosiscell proliferationmicroRNA-1226-3posteosarcoma

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