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Updated: Jan 19, 2026

Spatial and Temporal Analysis of Active ERK in the C. elegans Germline
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Spatial and Temporal Analysis of Active ERK in the C. elegans Germline

Published on: November 29, 2016

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RRAS2 knockdown suppresses osteosarcoma progression by inactivating the MEK/ERK signaling pathway

Kejun Wang1, Kan Peng2

  • 1Department of Orthopaedics, Jingzhou Central Hospital, Jingzhou.

Anti-Cancer Drugs
|September 14, 2019
PubMed

Insights

Ras-related protein 2 (RRAS2) is upregulated in osteosarcoma, promoting cancer cell proliferation and migration. Silencing RRAS2 inhibits tumor progression and MEK/ERK pathway activation, suggesting RRAS2 as a therapeutic target.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Genetics

Background:

  • Aberrant RAS homolog and RAS p21 protein (RRAS2) function is implicated in various cancers.
  • The role of RRAS2 in osteosarcoma tumorigenesis remains largely unexplored.

Purpose of the Study:

  • To investigate the role of RRAS2 in osteosarcoma progression.
  • To elucidate the underlying molecular mechanisms of RRAS2 in osteosarcoma.

Main Methods:

  • Analysis of RRAS2 gene expression and prognostic value using Gene Expression Omnibus (GEO) database.
  • RNA interference (RNAi) to silence RRAS2 expression in osteosarcoma cells.
  • Quantitative real-time PCR (qRT-PCR) and Western blot for gene and protein expression analysis.
  • In vitro proliferation (MTT assay) and migration (wound-healing assay) assessments.
  • Evaluation of MEK/ERK signaling pathway activation.

Main Results:

  • RRAS2 was significantly upregulated in osteosarcoma tissues and cell lines.
  • High RRAS2 expression correlated with poor patient prognosis.
  • RNAi-mediated RRAS2 silencing reduced osteosarcoma cell proliferation and migration.
  • RRAS2 silencing suppressed the activation of the MEK/ERK signaling pathway.

Conclusions:

  • RRAS2 acts as an adverse prognostic factor in osteosarcoma.
  • RRAS2 promotes osteosarcoma cell proliferation and migration via activation of the MEK/ERK pathway.
  • Targeting RRAS2 may offer a novel therapeutic strategy for osteosarcoma.

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