期刊
CANCER CELL
卷 32, 期 5, 页码 684-+出版社
CELL PRESS
DOI: 10.1016/j.ccell.2017.09.014
关键词
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资金
- European Research Council [GA 616744]
- US NIH [P01CA196539]
- Canadian Institutes of Health Research (CIHR) [MOP 286756]
- I-CHANGE consortium
- Fonds de Recherche du Quebec - Sante
- UK Medical Research Council [MC_U12266B]
- Brain Tumour Charity
- Biomedical Research Council
- Fond de la Recherche du Quebec en Sante
- MRC [MR/M00094X/1, MC_EX_G0800785] Funding Source: UKRI
- Medical Research Council [MC_U12266B, MC_CF12266, MC_EX_G0800785, MR/M00094X/1] Funding Source: researchfish
- The Brain Tumour Charity [8/47] Funding Source: researchfish
- Worldwide Cancer Research [13-1083] Funding Source: researchfish
Gain-of-function mutations in histone 3 (H3) variants are found in a substantial proportion of pediatric high-grade gliomas (pHGG), often in association with TP53 loss and platelet-derived growth factor receptor alpha (PDGFRA) amplification. Here, we describe a somatic mouse model wherein H3.3(K27M) and Trp53 loss alone are sufficient for neoplastic transformation if introduced in utero. H3.3(K27M) -driven lesions are clonal, H3.3(K27)me3 depleted, Olig2 positive, highly proliferative, and diffusely spreading, thus recapitulating hallmark molecular and histopathological features of pHGG. Addition of wild-type PDGFRA decreases latency and increases tumor invasion, while ATRX knockdown is associated with more circumscribed tumors. H3.3(K27M) -tumor cells serially engraft in recipient mice, and preliminary drug screening reveals mutation-specific vulnerabilities. Overall, we provide a faithful H3.3(K27M)-pHGG model which enables insights into oncohistone pathogenesis and investigation of future therapies.
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