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Oncostatin M signaling in human glioma cell lines.

Journal article
Authors Annika Krona
Sofia Järnum
Leif G Salford
Bengt Widegren
Pierre Åman
Published in Oncology reports
Volume 13
Issue 5
Pages 807-11
ISSN 1021-335X
Publication year 2005
Published at Institute of Laboratory Medicine, Dept of Pathology
Pages 807-11
Language en
Keywords Apoptosis Regulatory Proteins, Astrocytes, cytology, drug effects, Base Sequence, Cell Line, Tumor, Cell Survival, drug effects, Cells, Cultured, Cytokines, pharmacology, DNA Primers, Glioma, physiopathology, Humans, Membrane Glycoproteins, pharmacology, Oncostatin M, Peptides, genetics, pharmacology, Receptors, Cytokine, genetics, Receptors, Oncostatin M, Reverse Transcriptase Polymerase Chain Reaction, Signal Transduction, drug effects, TNF-Related Apoptosis-Inducing Ligand, Tumor Necrosis Factor-alpha, pharmacology
Subject categories Medical and Health Sciences


We have recently found that oncostatin M (OSM) is overexpressed in most human brain tumors. The effects of OSM are unclear with conflicting reports of growth stimulatory or inhibitory effects in various cell types. The aim of this study was to investigate the effects of OSM in 5 glioma cell lines and 7 short-term cultures of human gliomas and in normal cultured human astrocytes. None of the cell lines and short-term cultured tumor cells expressed OSM in vitro. OSM signals through a gp130 containing receptor complex over the JAK/STAT pathway. Immunofluorescence and RT-PCR analysis showed that the tumor cells express gp130 and the other receptor components, LIFRbeta and OSMRbeta. OSM treatment induced phosphorylation of STAT3 and STAT1 indicating presence of a functional JAK/STAT pathway. No OSM effect on proliferation was observed. OSM gave no protective effects against tumor necrosis factor-related apoptosis inducing ligand (TRAIL)-induced cytotoxicity.

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