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Tumor associated microglia/macrophages utilize GPNMB to promote tumor growth and alter immune cell infiltration in glioma

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Item Type:Article
Title:Tumor associated microglia/macrophages utilize GPNMB to promote tumor growth and alter immune cell infiltration in glioma
Creators Name:Yalcin, F. and Haneke, H. and Efe, I.E. and Kuhrt, L.D. and Motta, E. and Nickl, B. and Flüh, C. and Synowitz, M. and Dzaye, O. and Bader, M. and Kettenmann, H.
Abstract:Tumor-associated microglia and blood-derived macrophages (TAMs) play a central role in modulating the immune suppressive microenvironment in glioma. Here, we show that GPNMB is predominantly expressed by TAMs in human glioblastoma multiforme and the murine RCAS-PDGFb high grade glioma model. Loss of GPNMB in the in vivo tumor microenvironment results in significantly smaller tumor volumes and generates a pro-inflammatory innate and adaptive immune cell microenvironment. The impact of host-derived GPNMB on tumor growth was confirmed in two distinct murine glioma cell lines in organotypic brain slices from GPNMB-KO and control mice. Using published data bases of human glioma, the elevated levels in TAMs could be confirmed and the GPNMB expression correlated with a poorer survival.
Keywords:Microglia, Macrophage, GPNMB, RCAS, Experimental Glioma, Glioblastoma, CD44, Animals, Mice
Source:Acta Neuropathologica Communications
ISSN:2051-5960
Publisher:BioMed Central
Volume:12
Number:1
Page Range:50
Date:2 April 2024
Official Publication:https://doi.org/10.1186/s40478-024-01754-7
PubMed:View item in PubMed

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