Abstract
The mesenchymal subtype of glioblastoma is thought to be determined by both cancer cell-intrinsic alterations and extrinsic cellular interactions, but remains poorly understood. Here, we dissect glioblastoma-to-microenvironment interactions by single-cell RNA sequencing analysis of human tumors and model systems, combined with functional experiments. We demonstrate that macrophages induce a transition of glioblastoma cells into mesenchymal-like (MES-like) states. This effect is mediated, both in vitro and in vivo, by macrophage-derived oncostatin M (OSM) that interacts with its receptors (OSMR or LIFR) in complex with GP130 on glioblastoma cells and activates STAT3. We show that MES-like glioblastoma states are also associated with increased expression of a mesenchymal program in macrophages and with increased cytotoxicity of T cells, highlighting extensive alterations of the immune microenvironment with potential therapeutic implications.
Keywords:
GBM; OSM; glioblastoma; macrophage; mesenchymal; scRNA-seq; tumor microenvironment.
Copyright © 2021 Elsevier Inc. All rights reserved.
Publication types
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Research Support, N.I.H., Extramural
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Research Support, Non-U.S. Gov't
MeSH terms
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Animals
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Brain Neoplasms / genetics
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Brain Neoplasms / immunology*
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Brain Neoplasms / pathology*
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Cells, Cultured
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Cytokine Receptor gp130 / genetics
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Cytokine Receptor gp130 / metabolism
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Cytotoxicity, Immunologic
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Gene Expression Regulation, Neoplastic
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Glioblastoma / genetics
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Glioblastoma / immunology*
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Glioblastoma / pathology*
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Humans
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Leukemia Inhibitory Factor Receptor alpha Subunit / genetics
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Leukemia Inhibitory Factor Receptor alpha Subunit / metabolism
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Mice
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Mice, Inbred C57BL
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Mice, Transgenic
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Oncostatin M / metabolism
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Oncostatin M Receptor beta Subunit / genetics
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Oncostatin M Receptor beta Subunit / metabolism
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STAT3 Transcription Factor / genetics
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STAT3 Transcription Factor / metabolism
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T-Lymphocytes / immunology*
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Tumor Microenvironment
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Tumor-Associated Macrophages / immunology*
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Tumor-Associated Macrophages / pathology
Substances
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IL6ST protein, human
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LIFR protein, human
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Leukemia Inhibitory Factor Receptor alpha Subunit
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OSMR protein, human
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Oncostatin M Receptor beta Subunit
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STAT3 Transcription Factor
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STAT3 protein, human
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Oncostatin M
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Cytokine Receptor gp130