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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., Haneke, H., Efe, I.E., Kuhrt, L.D., Motta, E., Nickl, B., Flüh, C., Synowitz, M., Dzaye, O., 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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