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Updated: May 22, 2026

Genetic Profiling and Genome-Scale Dropout Screening to Identify Therapeutic Targets in Mouse Models of Malignant Peripheral Nerve Sheath Tumor
09:33

Genetic Profiling and Genome-Scale Dropout Screening to Identify Therapeutic Targets in Mouse Models of Malignant Peripheral Nerve Sheath Tumor

Published on: August 25, 2023

MicroRNA-21 correlates with tumorigenesis in malignant peripheral nerve sheath tumor (MPNST) via programmed cell

Satoru Itani1, Toshiyuki Kunisada, Yuki Morimoto

  • 1Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan.

Journal of Cancer Research and Clinical Oncology
|April 25, 2012
PubMed
Abstract

Insights

MicroRNA-21 (miR-21) is elevated in malignant peripheral nerve sheath tumors (MPNSTs) and drives tumor growth by suppressing PDCD4. Inhibiting miR-21 may offer a new therapeutic strategy for MPNST.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Malignant peripheral nerve sheath tumors (MPNSTs) are aggressive cancers.
  • Understanding the molecular mechanisms driving MPNST development is crucial for effective treatment.
  • MicroRNAs (miRNAs) are key regulators of gene expression implicated in various cancers.

Purpose of the Study:

  • To investigate miRNA profiles in MPNSTs compared to neurofibromas (NFs).
  • To elucidate the role of specific miRNAs, particularly miR-21, in MPNST development and progression.
  • To identify potential miRNA targets involved in MPNST pathogenesis.

Main Methods:

  • Global miRNA expression profiling of clinical MPNST and NF samples.
  • Quantitative real-time PCR to validate miR-21 expression in MPNSTs, NFs, and normal nerves.
  • In vitro studies using MPNST cell lines to assess the impact of miR-21 inhibition on cell proliferation, apoptosis, and target gene expression.

Main Results:

  • Nine miRNAs showed significantly altered expression between MPNSTs and NFs.
  • miR-21 expression was significantly higher in MPNSTs compared to NFs.
  • Inhibiting miR-21 in MPNST cells increased apoptosis, suppressed growth, and upregulated its target, PDCD4.

Conclusions:

  • miR-21 plays a critical role in MPNST tumorigenesis and progression via its target PDCD4.
  • miR-21 and PDCD4 represent potential therapeutic targets for MPNST treatment.
  • Further research into miR-21 targeted therapies for MPNST is warranted.

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