Papers

Feb, 2021

Differentiated glioblastoma cells accelerate tumor progression by shaping the tumor microenvironment via CCN1-mediated macrophage infiltration

ACTA NEUROPATHOLOGICA COMMUNICATIONS
  • Atsuhito Uneda
  • ,
  • Kazuhiko Kurozumi
  • ,
  • Atsushi Fujimura
  • ,
  • Kentaro Fujii
  • ,
  • Joji Ishida
  • ,
  • Yosuke Shimazu
  • ,
  • Yoshihiro Otani
  • ,
  • Yusuke Tomita
  • ,
  • Yasuhiko Hattori
  • ,
  • Yuji Matsumoto
  • ,
  • Nobushige Tsuboi
  • ,
  • Keigo Makino
  • ,
  • Shuichiro Hirano
  • ,
  • Atsunori Kamiya
  • ,
  • Isao Date

Volume
9
Number
1
Language
English
Publishing type
Research paper (scientific journal)
DOI
10.1186/s40478-021-01124-7
Publisher
BMC

Glioblastoma (GBM) is the most lethal primary brain tumor characterized by significant cellular heterogeneity, namely tumor cells, including GBM stem-like cells (GSCs) and differentiated GBM cells (DGCs), and non-tumor cells such as endothelial cells, vascular pericytes, macrophages, and other types of immune cells. GSCs are essential to drive tumor progression, whereas the biological roles of DGCs are largely unknown. In this study, we focused on the roles of DGCs in the tumor microenvironment. To this end, we extracted DGC-specific signature genes from transcriptomic profiles of matched pairs of in vitro GSC and DGC models. By evaluating the DGC signature using single cell data, we confirmed the presence of cell subpopulations emulated by in vitro culture models within a primary tumor. The DGC signature was correlated with the mesenchymal subtype and a poor prognosis in large GBM cohorts such as The Cancer Genome Atlas and Ivy Glioblastoma Atlas Project. In silico signaling pathway analysis suggested a role of DGCs in macrophage infiltration. Consistent with in silico findings, in vitro DGC models promoted macrophage migration. In vivo, coimplantation of DGCs and GSCs reduced the survival of tumor xenograft-bearing mice and increased macrophage infiltration into tumor tissue compared with transplantation of GSCs alone. DGCs exhibited a significant increase in YAP/TAZ/TEAD activity compared with GSCs. CCN1, a transcriptional target of YAP/TAZ, was selected from the DGC signature as a candidate secreted protein involved in macrophage recruitment. In fact, CCN1 was secreted abundantly from DGCs, but not GSCs. DGCs promoted macrophage migration in vitro and macrophage infiltration into tumor tissue in vivo through secretion of CCN1. Collectively, these results demonstrate that DGCs contribute to GSC-dependent tumor progression by shaping a mesenchymal microenvironment via CCN1-mediated macrophage infiltration. This study provides new insight into the complex GBM microenvironment consisting of heterogeneous cells.

Web of Science ® Times Cited Count : 6
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Link information
DOI
https://doi.org/10.1186/s40478-021-01124-7
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/33618763
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000620598700001&DestApp=WOS_CPL
Scopus
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85101231243&origin=inward Open access
Scopus Citedby
https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85101231243&origin=inward
ID information
  • DOI : 10.1186/s40478-021-01124-7
  • ISSN : 2051-5960
  • eISSN : 2051-5960
  • Pubmed ID : 33618763
  • SCOPUS ID : 85101231243
  • Web of Science ID : WOS:000620598700001

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