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mir-204-5p Acts as a Tumor Suppressor by Targeting DNM2 in Osteosarcoma Cells

Liangliang Qu1, Zhongqiu Li2, Pinduan Liu1

  • 1Department of Orthopedics, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou 121001, Liaoning, China.

Journal of Healthcare Engineering
|February 21, 2022
PubMed

Insights

MicroRNA-204-5p (mir-204-5p) acts as a tumor suppressor in osteosarcoma. Its overexpression inhibits cancer cell growth and promotes apoptosis by targeting DNM2, offering potential new therapeutic strategies.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Osteosarcoma is a primary malignant bone tumor.
  • Understanding the molecular mechanisms driving osteosarcoma progression is crucial for developing effective treatments.

Purpose of the Study:

  • To investigate the role of microRNA-204-5p (mir-204-5p) in osteosarcoma.
  • To elucidate the functional relationship between mir-204-5p and DNM2 in osteosarcoma cells.

Main Methods:

  • Quantitative real-time PCR (qPCR) to measure mir-204-5p expression in patient tissues.
  • Transfection of osteosarcoma cells with mir-204-5p overexpression vectors.
  • Assessment of cell proliferation, invasion, migration, and apoptosis.
  • Bioinformatic prediction using StarBase and validation via dual-luciferase reporter assays to confirm mir-204-5p targeting of DNM2.

Main Results:

  • Mir-204-5p expression was significantly downregulated in osteosarcoma tissues compared to adjacent non-cancerous tissues.
  • Overexpression of mir-204-5p suppressed osteosarcoma cell proliferation and migration while promoting apoptosis.
  • Dual-luciferase reporter assays confirmed that mir-204-5p directly targets DNM2, indicated by reduced fluorescence activity upon binding.

Conclusions:

  • Mir-204-5p functions as a tumor suppressor in osteosarcoma.
  • The tumor-inhibitory effect of mir-204-5p is mediated through its targeting of DNM2.
  • These findings suggest mir-204-5p/DNM2 axis as a potential therapeutic target for osteosarcoma treatment.

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