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MicroRNA-301a inhibits the progression of osteosarcoma by regulating DEC2

Hao Wu1, Zhongjie Yu, Qi Chen

  • 1Trauma Center, Changzhou No.2 People's Hospital, the Affiliated Hospital of Nanjing Medical University, Changzhou, China.

Journal of B.U.ON. : Official Journal of the Balkan Union of Oncology
|June 12, 2020
PubMed
Abstract

Insights

MicroRNA-301a is downregulated in osteosarcoma (OS) and its low expression correlates with increased metastasis and poor prognosis. This microRNA inhibits OS progression by regulating DEC2.

Area of Science:

  • Oncology
  • Molecular Biology
  • Gene Expression

Background:

  • Osteosarcoma (OS) is a primary bone malignancy with significant metastatic potential.
  • MicroRNAs (miRNAs) play crucial roles in cancer development and progression.
  • Understanding the specific roles of miRNAs in OS is vital for developing targeted therapies.

Purpose of the Study:

  • To investigate the expression levels of microRNA (miRNA)-301a in osteosarcoma.
  • To determine the relationship between miRNA-301a expression and clinicopathological parameters and prognosis in OS patients.
  • To elucidate the mechanism by which miRNA-301a influences OS progression, focusing on downstream target genes.

Main Methods:

  • Quantitative real-time polymerase chain reaction (qRT-PCR) to measure miRNA-301a expression in tumor and adjacent tissues.
  • Analysis of the correlation between miRNA-301a levels and clinical indicators, along with patient survival data.
  • In vitro functional assays (cell counting kit-8, Transwell, wound healing) using miRNA-301a overexpression vectors.
  • Luciferase reporter gene assays and cell recovery experiments to investigate molecular mechanisms involving DEC2.

Main Results:

  • MiRNA-301a expression was significantly lower in OS tumor tissues compared to adjacent tissues.
  • Low miRNA-301a expression was associated with a higher incidence of distant metastasis and poorer overall survival in OS patients.
  • Overexpression of miRNA-301a inhibited OS cell proliferation and metastasis in vitro.
  • DEC2 expression was elevated in OS and inversely correlated with miRNA-301a levels, with evidence of mutual regulation promoting OS progression.

Conclusions:

  • MiRNA-301a is downregulated in osteosarcoma tissues and cell lines.
  • Reduced miRNA-301a expression is linked to distant metastasis and unfavorable prognosis in OS.
  • MiRNA-301a suppresses the malignant progression of osteosarcoma, partly through the regulation of DEC2.

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