Inositol treatment inhibits medulloblastoma through suppression of epigenetic-driven metabolic adaptation.

Inositol treatment inhibits medulloblastoma through suppression of epigenetic-driven metabolic adaptation.
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DOI:
10.1038/s41467-021-22379-7
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发表时间:
2021-04-12
影响因子:
16.6
通讯作者:
Marino S
Marino S
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Badodi S;Pomella N;Zhang X;Rosser G;Whittingham J;Niklison-Chirou MV;Lim YM;Brandner S;Morrison G;Pollard SM;Bennett CD;Clifford SC;Peet A;Basson MA;Marino S

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Deregulation of chromatin modifiers plays an essential role in the pathogenesis of medulloblastoma, the most common paediatric malignant brain tumour. Here, we identify a BMI1-dependent sensitivity to deregulation of inositol metabolism in a proportion of medulloblastoma. We demonstrate mTOR pathway activation and metabolic adaptation specifically in medulloblastoma of the molecular subgroup G4 characterised by a BMI1High;CHD7Low signature and show this can be counteracted by IP6 treatment. Finally, we demonstrate that IP6 synergises with cisplatin to enhance its cytotoxicity in vitro and extends survival in a pre-clinical BMI1High;CHD7Low xenograft model. BMI1 and CHD7 are chromatin remodelling genes with a role in medulloblastoma pathogenesis. Here, the authors demonstrate that the BMI1High/CHD7Low signature mediates metabolic adaptation in G4 MB and predicts response to inositol treatment either alone or in combination with chemotherapy.
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