Related Experiment Video

Updated: Aug 18, 2026

Live-Cell Imaging Assays to Study Glioblastoma Brain Tumor Stem Cell Migration and Invasion
09:36

Live-Cell Imaging Assays to Study Glioblastoma Brain Tumor Stem Cell Migration and Invasion

Published on: August 29, 2018

Oncostatin M signaling in human glioma cell lines

Annika Krona1, Sofia Järnum, Leif G Salford

  • 1Lundberg Laboratory for Cancer Research, Department of Pathology, Göteborg University, Sahlgrenska University Hospital, 41345 Göteborg, Sweden.

Oncology Reports
|April 6, 2005
PubMed

Insights

Oncostatin M (OSM) is overexpressed in brain tumors, but this study found it does not affect glioma cell proliferation or survival. Further research is needed to understand OSM's role in brain tumors.

Area of Science:

  • Neuro-oncology
  • Molecular biology
  • Cell signaling

Background:

  • Oncostatin M (OSM) is frequently overexpressed in human brain tumors.
  • The precise role of OSM in gliomas remains unclear, with conflicting reports on its effects on cell growth.

Purpose of the Study:

  • To investigate the effects of OSM on glioma cell lines and primary human glioma cultures.
  • To determine if OSM influences glioma cell proliferation, survival, or response to apoptosis-inducing agents.

Main Methods:

  • Utilized 5 glioma cell lines and 7 short-term human glioma cultures, alongside normal human astrocytes.
  • Assessed OSM receptor component expression (gp130, LIFRbeta, OSMRbeta) via immunofluorescence and RT-PCR.
  • Investigated OSM-induced JAK/STAT pathway activation through STAT3 and STAT1 phosphorylation.
  • Evaluated OSM's impact on cell proliferation and protection against TRAIL-induced cytotoxicity.

Main Results:

  • Glioma cell lines and primary cultures did not express OSM in vitro.
  • Tumor cells expressed the necessary components for OSM signaling (gp130, LIFRbeta, OSMRbeta).
  • OSM treatment activated the JAK/STAT pathway (STAT3/STAT1 phosphorylation) but did not affect cell proliferation.
  • OSM did not provide protection against tumor necrosis factor-related apoptosis inducing ligand (TRAIL)-induced cell death.

Conclusions:

  • Despite overexpression in brain tumors, OSM does not directly impact glioma cell proliferation or survival in vitro.
  • The JAK/STAT pathway is functional in glioma cells in response to OSM, but this does not translate to altered proliferation or apoptosis resistance.
  • The role of OSM in brain tumor progression warrants further investigation, potentially involving paracrine or other indirect mechanisms.

More Related Videos

Flow Cytometry-based Drug Screening System for the Identification of Small Molecules That Promote Cellular Differentiation of Glioblastoma Stem Cells10:28

Flow Cytometry-based Drug Screening System for the Identification of Small Molecules That Promote Cellular Differentiation of Glioblastoma Stem Cells

Published on: January 10, 2018

Related Concept Videos

mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...