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Spinelli C, Adnani L, Meehan B, Montermini L, Huang S, Kim M, Nishimura T, Croul SE, Nakano I, Riazalhosseini Y, Rak J. Mesenchymal glioma stem cells trigger vasectasia-distinct neovascularization process stimulated by extracellular vesicles carrying EGFR. Nat Commun 2024; 15:2865. [PMID: 38570528 PMCID: PMC10991552 DOI: 10.1038/s41467-024-46597-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 03/04/2024] [Indexed: 04/05/2024] Open
Abstract
Targeting neovascularization in glioblastoma (GBM) is hampered by poor understanding of the underlying mechanisms and unclear linkages to tumour molecular landscapes. Here we report that different molecular subtypes of human glioma stem cells (GSC) trigger distinct endothelial responses involving either angiogenic or circumferential vascular growth (vasectasia). The latter process is selectively triggered by mesenchymal (but not proneural) GSCs and is mediated by a subset of extracellular vesicles (EVs) able to transfer EGFR/EGFRvIII transcript to endothelial cells. Inhibition of the expression and phosphorylation of EGFR in endothelial cells, either pharmacologically (Dacomitinib) or genetically (gene editing), abolishes their EV responses in vitro and disrupts vasectasia in vivo. Therapeutic inhibition of EGFR markedly extends anticancer effects of VEGF blockade in mice, coupled with abrogation of vasectasia and prolonged survival. Thus, vasectasia driven by intercellular transfer of oncogenic EGFR may represent a new therapeutic target in a subset of GBMs.
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Affiliation(s)
- Cristiana Spinelli
- McGill University, The Research Institute of the McGill University Health Centre, Montreal, QC, Canada
| | - Lata Adnani
- McGill University, The Research Institute of the McGill University Health Centre, Montreal, QC, Canada
| | - Brian Meehan
- McGill University, The Research Institute of the McGill University Health Centre, Montreal, QC, Canada
| | - Laura Montermini
- McGill University, The Research Institute of the McGill University Health Centre, Montreal, QC, Canada
| | - Sidong Huang
- Department of Biochemistry, McGill University, Montreal, QC, Canada
- Rosalind & Morris Goodman Cancer Institute, McGill University, Montreal, QC, Canada
| | - Minjun Kim
- Department of Human Genetics, McGill University, Montreal, QC, Canada
| | - Tamiko Nishimura
- Department of Human Genetics, McGill University, Montreal, QC, Canada
| | - Sidney E Croul
- Department of Pathology & Laboratory Medicine, Dalhousie University, Halifax, NS, Canada
| | - Ichiro Nakano
- Department of Neurosurgery, Hokuto Social Medical Corporation, Hokuto Hospital, Kisen-7-5 Inadacho, Obihiro, Hokkaido, 080-0833, Japan
| | | | - Janusz Rak
- McGill University, The Research Institute of the McGill University Health Centre, Montreal, QC, Canada.
- Department of Biochemistry, McGill University, Montreal, QC, Canada.
- Department of Human Genetics, McGill University, Montreal, QC, Canada.
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