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Knockdown of microRNA-181a inhibits osteosarcoma cells growth and invasion through triggering NLRP3-dependent

B-G Tian1, Z Hua, Z-J Wang

  • 1Department of Orthopedics, Wuxi traditional Chinese Medicine Hospital Affiliated to Nanjing University of Chinese Medicine, Wuxi, Jiangsu, China. zhiyan021939264@163.com.

European Review for Medical and Pharmacological Sciences
|February 26, 2020
PubMed
Abstract

Insights

MicroRNA-181a (miRNA-181a) is elevated in osteosarcoma, promoting cancer progression. Inhibiting miRNA-181a activates pyroptosis, offering a potential therapeutic strategy for osteosarcoma.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Osteosarcoma is a primary bone malignancy with limited effective treatments.
  • MicroRNAs play crucial roles in cancer development and progression.
  • The specific role of microRNA-181a (miRNA-181a) in osteosarcoma pathogenesis requires further elucidation.

Purpose of the Study:

  • To investigate the physiological function of miRNA-181a in osteosarcoma.
  • To elucidate the molecular mechanisms underlying miRNA-181a's role in osteosarcoma carcinogenesis.
  • To evaluate miRNA-181a as a potential therapeutic target for osteosarcoma.

Main Methods:

  • Quantitative real-time polymerase chain reaction (qRT-PCR) to measure miRNA-181a expression.
  • In vitro assays (Cell Counting Kit-8, transwell, Western blotting, TUNEL) to assess cell proliferation, invasion, apoptosis, and protein levels.
  • In vivo studies using a xenograft tumor model in mice to evaluate therapeutic effects.
  • Manipulation of miRNA-181a levels using inhibitors and mimics.

Main Results:

  • miRNA-181a was significantly upregulated in osteosarcoma tissues and cells.
  • Overexpression of miRNA-181a promoted cell proliferation and migration, while knockdown inhibited these processes.
  • Downregulation of miRNA-181a induced NOD-like receptor protein 3 (NLRP3)-dependent pyroptosis, suppressing tumor growth in vitro and in vivo.
  • Silencing NLRP3 reversed the effects of miRNA-181a inhibition.

Conclusions:

  • miRNA-181a plays a pro-carcinogenic role in osteosarcoma by promoting proliferation and migration.
  • miRNA-181a functions by suppressing NLRP3-dependent pyroptosis.
  • Targeting miRNA-181a represents a promising therapeutic strategy for osteosarcoma treatment.

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