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Nasopharyngeal carcinoma super-enhancer-driven ETV6 correlates with prognosis

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机构: [1]Sun Yat Sen Univ, Ctr Canc, Collaborat Innovat Ctr Canc Med, State Key Lab Oncol South China, Guangzhou 510060, Guangdong, Peoples R China; [2]Brigham & Womens Hosp, Dept Med, Boston, MA 02115 USA; [3]Harvard Med Sch, Boston, MA 02115 USA; [4]Habib Bourguiba Hosp, Pathol Dept, Medenine 4100, Tunisia; [5]Univ Sfax, Sch Med, Sfax 3029, Tunisia; [6]Univ Hong Kong, Ctr Canc Res, Dept Anat, Hong Kong, Hong Kong, Peoples R China; [7]Univ Paris Saclay, Gustave Roussy, CNRS, UMR 8126, F-94805 Villejuif, France
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关键词: nasopharyngeal carcinoma super-enhancer H3K27ac Epstein-Barr virus ETV6

摘要:
Nasopharyngeal carcinoma (NPC) most frequently occurs in southern China and southeast Asia. Epidemiology studies link NPC to genetic predisposition, Epstein-Barr virus (EBV) infection, and environmental factors. Genetic studies indicate that mutations in chromatin-modifying enzymes are the most frequent genetic alterations in NPC. Here, we used H3K27ac chromatin immune precipitation followed by deep sequencing (ChIP-seq) to define the NPC epigenome in primary NPC biopsies, NPC xenografts, and an NPC cell line, and compared them to immortalized normal nasopharyngeal or oral epithelial cells. We identified NPC-specific enhancers and found these enhancers were enriched with nuclear factor kappa B (NF-kappa B), IFN-responsive factor 1 (IRF1) and IRF2, and ETS family members ETS1 motifs. Normal cell-specific enhancers were enriched with basic leucine zipper family members and TP53 motifs. NPC super-enhancers with extraordinarily broad and high H3K27ac signals were also identified, and they were linked to genes important for oncogenesis including ETV6. ETV6 was also highly expressed in NPC biopsies by immunohistochemistry. High ETV6 expression correlated with a poor prognosis. Furthermore, we defined the EBV episome epigenetic landscapes in primary NPC tissue.

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大类 | 1 区 综合性期刊
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大类 | 1 区 综合性期刊
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第一作者机构: [1]Sun Yat Sen Univ, Ctr Canc, Collaborat Innovat Ctr Canc Med, State Key Lab Oncol South China, Guangzhou 510060, Guangdong, Peoples R China; [2]Brigham & Womens Hosp, Dept Med, Boston, MA 02115 USA; [3]Harvard Med Sch, Boston, MA 02115 USA;
通讯作者:
通讯机构: [1]Sun Yat Sen Univ, Ctr Canc, Collaborat Innovat Ctr Canc Med, State Key Lab Oncol South China, Guangzhou 510060, Guangdong, Peoples R China; [2]Brigham & Womens Hosp, Dept Med, Boston, MA 02115 USA; [3]Harvard Med Sch, Boston, MA 02115 USA; [7]Univ Paris Saclay, Gustave Roussy, CNRS, UMR 8126, F-94805 Villejuif, France
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