A Glial Signature and Wnt7 Signaling Regulate Glioma-Vascular Interactions and Tumor Microenvironment
Document Type
Article
Abstract
Gliomas comprise heterogeneous malignant glial and stromal cells. While blood vessel co-option is a potential mechanism to escape anti-angiogenic therapy, the relevance of glial phenotype in this process is unclear. We show that Olig2 oligodendrocyte precursor-like glioma cells invade by single-cell vessel co-option and preserve the blood-brain barrier (BBB). Conversely, Olig2-negative glioma cells form dense perivascular collections and promote angiogenesis and BBB breakdown, leading to innate immune cell activation. Experimentally, Olig2 promotes Wnt7b expression, a finding that correlates in human glioma profiling. Targeted Wnt7a/7b deletion or pharmacologic Wnt inhibition blocks Olig2 glioma single-cell vessel co-option and enhances responses to temozolomide. Finally, Olig2 and Wnt7 become upregulated after anti-VEGF treatment in preclinical models and patients. Thus, glial-encoded pathways regulate distinct glioma-vascular microenvironmental interactions.
Keywords
Olig2, Wnt, angiogenesis, astrocyte, blood-brain barrier, glioma, invasiveness, oligodendrocyte precursor, p53, vessel co-option
Medical Subject Headings
Animals; Bevacizumab (pharmacology); Blood-Brain Barrier (metabolism); Brain Neoplasms (blood supply, drug therapy, metabolism); Cell Line, Tumor; Gene Expression Regulation, Neoplastic (drug effects); Glioma (blood supply, drug therapy, metabolism); Humans; Mice; Neoplasm Transplantation; Oligodendrocyte Transcription Factor 2 (genetics, metabolism); Oligodendroglia (microbiology); Temozolomide (pharmacology); Tumor Cells, Cultured; Tumor Microenvironment; Wnt Proteins (genetics, metabolism); Wnt Signaling Pathway (drug effects)
Publication Date
5-14-2018
Publication Title
Cancer cell
E-ISSN
1878-3686
Volume
33
Issue
5
First Page
874
Last Page
889.e7
PubMed ID
29681511
Digital Object Identifier (DOI)
10.1016/j.ccell.2018.03.020
Recommended Citation
Griveau, Amelie; Seano, Giorgio; Shelton, Samuel J.; Kupp, Robert; Jahangiri, Arman; Obernier, Kirsten; Krishnan, Shanmugarajan; Lindberg, Olle R.; Yuen, Tracy J.; Tien, An-Chi; Sabo, Jennifer K.; Wang, Nancy; Chen, Ivy; Kloepper, Jonas; Larrouquere, Louis; Ghosh, Mitrajit; Tirosh, Itay; Huillard, Emmanuelle; Alvarez-Buylla, Arturo; Oldham, Michael C.; Persson, Anders I.; Weiss, William A.; Batchelor, Tracy T.; Stemmer-Rachamimov, Anat; Suvà, Mario L.; Phillips, Joanna J.; Aghi, Manish K.; Mehta, Shwetal; Jain, Rakesh K.; and Rowitch, David H., "A Glial Signature and Wnt7 Signaling Regulate Glioma-Vascular Interactions and Tumor Microenvironment" (2018). Translational Neuroscience. 1577.
https://scholar.barrowneuro.org/neurobiology/1577