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McNicholas M, De Cola A, Bashardanesh Z, Foss A, Lloyd CB, Hébert S, Faury D, Andrade AF, Jabado N, Kleinman CL, Pathania M. A Compendium of Syngeneic, Transplantable Pediatric High-Grade Glioma Models Reveals Subtype-Specific Therapeutic Vulnerabilities. Cancer Discov 2023; 13:1592-1615. [PMID: 37011011 PMCID: PMC10326601 DOI: 10.1158/2159-8290.cd-23-0004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 02/20/2023] [Accepted: 03/29/2023] [Indexed: 04/04/2023]
Abstract
Pediatric high-grade gliomas (pHGG) are lethal, incurable brain tumors frequently driven by clonal mutations in histone genes. They often harbor a range of additional genetic alterations that correlate with different ages, anatomic locations, and tumor subtypes. We developed models representing 16 pHGG subtypes driven by different combinations of alterations targeted to specific brain regions. Tumors developed with varying latencies and cell lines derived from these models engrafted in syngeneic, immunocompetent mice with high penetrance. Targeted drug screening revealed unexpected selective vulnerabilities-H3.3G34R/PDGFRAC235Y to FGFR inhibition, H3.3K27M/PDGFRAWT to PDGFRA inhibition, and H3.3K27M/PDGFRAWT and H3.3K27M/PPM1DΔC/PIK3CAE545K to combined inhibition of MEK and PIK3CA. Moreover, H3.3K27M tumors with PIK3CA, NF1, and FGFR1 mutations were more invasive and harbored distinct additional phenotypes, such as exophytic spread, cranial nerve invasion, and spinal dissemination. Collectively, these models reveal that different partner alterations produce distinct effects on pHGG cellular composition, latency, invasiveness, and treatment sensitivity. SIGNIFICANCE Histone-mutant pediatric gliomas are a highly heterogeneous tumor entity. Different histone mutations correlate with different ages of onset, survival outcomes, brain regions, and partner alterations. We have developed models of histone-mutant gliomas that reflect this anatomic and genetic heterogeneity and provide evidence of subtype-specific biology and therapeutic targeting. See related commentary by Lubanszky and Hawkins, p. 1516. This article is highlighted in the In This Issue feature, p. 1501.
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Affiliation(s)
- Michael McNicholas
- Department of Oncology and Milner Therapeutics Institute, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge, United Kingdom
- CRUK Children's Brain Tumour Centre of Excellence, University of Cambridge, Cambridge, United Kingdom
| | - Antonella De Cola
- Department of Oncology and Milner Therapeutics Institute, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge, United Kingdom
- CRUK Children's Brain Tumour Centre of Excellence, University of Cambridge, Cambridge, United Kingdom
| | - Zahedeh Bashardanesh
- Lady Davis Research Institute, Jewish General Hospital, Montreal, Quebec, Canada
- Department of Human Genetics, McGill University, Montreal, Quebec, Canada
| | - Amelia Foss
- Department of Oncology and Milner Therapeutics Institute, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge, United Kingdom
- CRUK Children's Brain Tumour Centre of Excellence, University of Cambridge, Cambridge, United Kingdom
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Cameron B. Lloyd
- Department of Oncology and Milner Therapeutics Institute, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge, United Kingdom
- CRUK Children's Brain Tumour Centre of Excellence, University of Cambridge, Cambridge, United Kingdom
| | - Steven Hébert
- Lady Davis Research Institute, Jewish General Hospital, Montreal, Quebec, Canada
- Department of Human Genetics, McGill University, Montreal, Quebec, Canada
| | - Damien Faury
- Department of Pediatrics, McGill University, and The Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | | | - Nada Jabado
- Department of Human Genetics, McGill University, Montreal, Quebec, Canada
- Department of Pediatrics, McGill University, and The Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
- Division of Experimental Medicine, Department of Medicine, McGill University, Montreal, Quebec, Canada
| | - Claudia L. Kleinman
- Lady Davis Research Institute, Jewish General Hospital, Montreal, Quebec, Canada
- Department of Human Genetics, McGill University, Montreal, Quebec, Canada
| | - Manav Pathania
- Department of Oncology and Milner Therapeutics Institute, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge, United Kingdom
- CRUK Children's Brain Tumour Centre of Excellence, University of Cambridge, Cambridge, United Kingdom
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