当前位置: X-MOL 学术Cell › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Metabolic Regulation of the Epigenome Drives Lethal Infantile Ependymoma.
Cell ( IF 64.5 ) Pub Date : 2020-05-22 , DOI: 10.1016/j.cell.2020.04.047
Kulandaimanuvel Antony Michealraj 1 , Sachin A Kumar 2 , Leo J Y Kim 3 , Florence M G Cavalli 1 , David Przelicki 2 , John B Wojcik 4 , Alberto Delaidelli 5 , Andrea Bajic 6 , Olivier Saulnier 1 , Graham MacLeod 7 , Ravi N Vellanki 8 , Maria C Vladoiu 2 , Paul Guilhamon 1 , Winnie Ong 2 , John J Y Lee 2 , Yanqing Jiang 1 , Borja L Holgado 1 , Alex Rasnitsyn 9 , Ahmad A Malik 10 , Ricky Tsai 11 , Cory M Richman 9 , Kyle Juraschka 2 , Joonas Haapasalo 1 , Evan Y Wang 9 , Pasqualino De Antonellis 1 , Hiromichi Suzuki 1 , Hamza Farooq 1 , Polina Balin 2 , Kaitlin Kharas 2 , Randy Van Ommeren 2 , Olga Sirbu 9 , Avesta Rastan 1 , Stacey L Krumholtz 1 , Michelle Ly 2 , Moloud Ahmadi 7 , Geneviève Deblois 8 , Dilakshan Srikanthan 2 , Betty Luu 1 , James Loukides 1 , Xiaochong Wu 1 , Livia Garzia 12 , Vijay Ramaswamy 13 , Evgeny Kanshin 14 , María Sánchez-Osuna 14 , Ibrahim El-Hamamy 15 , Fiona J Coutinho 1 , Panagiotis Prinos 16 , Sheila Singh 17 , Laura K Donovan 1 , Craig Daniels 1 , Daniel Schramek 10 , Mike Tyers 14 , Samuel Weiss 18 , Lincoln D Stein 15 , Mathieu Lupien 8 , Bradly G Wouters 8 , Benjamin A Garcia 4 , Cheryl H Arrowsmith 19 , Poul H Sorensen 5 , Stephane Angers 20 , Nada Jabado 21 , Peter B Dirks 22 , Stephen C Mack 23 , Sameer Agnihotri 24 , Jeremy N Rich 3 , Michael D Taylor 25
Affiliation  

Posterior fossa A (PFA) ependymomas are lethal malignancies of the hindbrain in infants and toddlers. Lacking highly recurrent somatic mutations, PFA ependymomas are proposed to be epigenetically driven tumors for which model systems are lacking. Here we demonstrate that PFA ependymomas are maintained under hypoxia, associated with restricted availability of specific metabolites to diminish histone methylation, and increase histone demethylation and acetylation at histone 3 lysine 27 (H3K27). PFA ependymomas initiate from a cell lineage in the first trimester of human development that resides in restricted oxygen. Unlike other ependymomas, transient exposure of PFA cells to ambient oxygen induces irreversible cellular toxicity. PFA tumors exhibit a low basal level of H3K27me3, and, paradoxically, inhibition of H3K27 methylation specifically disrupts PFA tumor growth. Targeting metabolism and/or the epigenome presents a unique opportunity for rational therapy for infants with PFA ependymoma.



中文翻译:

表观基因组的代谢调节导致致命的婴儿室管膜瘤。

A 后窝 (PFA) 室管膜瘤是婴儿和幼儿后脑的致命恶性肿瘤。由于缺乏高度复发的体细胞突变,PFA 室管膜瘤被认为是表观遗传驱动的肿瘤,缺乏模型系统。在这里,我们证明 PFA 室管膜瘤在缺氧下维持,与减少组蛋白甲基化和增加组蛋白 3 赖氨酸 27 (H3K27) 的组蛋白去甲基化和乙酰化的特定代谢物的可用性有限有关。PFA 室管膜瘤起源于人类发育前三个月的细胞谱系,该细胞谱系存在于受限的氧气中。与其他室管膜瘤不同,PFA 细胞短暂暴露于环境氧气会引起不可逆的细胞毒性。PFA 肿瘤表现出较低的 H3K27me3 基础水平,矛盾的是,抑制 H3K27 甲基化会特异性破坏 PFA 肿瘤的生长。针对代谢和/或表观基因组为 PFA 室管膜瘤婴儿的合理治疗提供了独特的机会。

更新日期:2020-05-22
down
wechat
bug