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miR-16-5p Suppresses Progression and Invasion of Osteosarcoma via Targeting at Smad3

Zhijian Gu1, Zhikun Li1, Ruijun Xu1

  • 1Department of Orthopedics, Tongren Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.

Frontiers in Pharmacology
|September 28, 2020
PubMed
Abstract

Insights

MicroRNA-16-5p (miR-16-5p) inhibits osteosarcoma growth and invasion. This microRNA targets Smad3, offering potential therapeutic strategies for osteosarcoma treatment.

Area of Science:

  • Oncology
  • Molecular Biology
  • Gene Regulation

Background:

  • MicroRNAs play a role in osteosarcoma development.
  • miR-16-5p's function in osteosarcoma growth and invasion was previously uncharacterized.

Purpose of the Study:

  • To investigate the role of miR-16-5p in osteosarcoma.
  • To elucidate the underlying molecular mechanisms of miR-16-5p action in osteosarcoma.

Main Methods:

  • Detected miR-16-5p and Smad3 expression in osteosarcoma tissues and cells.
  • Assessed the impact of miR-16-5p modulation on osteosarcoma cell proliferation, migration, and invasion.
  • Utilized cell counting kit-8, wound healing, and Transwell assays.
  • Constructed a mutated Smad3 expression vector to confirm target interaction.

Main Results:

  • miR-16-5p was downregulated, while Smad3 was overexpressed in osteosarcoma.
  • Overexpression of miR-16-5p suppressed osteosarcoma cell proliferation, migration, and invasion.
  • miR-16-5p overexpression enhanced cisplatin's therapeutic efficacy.
  • miR-16-5p directly targeted Smad3, reducing its expression.

Conclusions:

  • miR-16-5p acts as a tumor suppressor in osteosarcoma.
  • The miR-16-5p/Smad3 axis is a critical regulator of osteosarcoma progression.
  • Targeting miR-16-5p presents a potential therapeutic avenue for osteosarcoma.
Keywords:
miR-16-5pSmad3invasionosteosarcomaproliferation

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