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Hypomethylation of CNTFR? is associated with proliferation and poor prognosis in lower grade gliomas.


ABSTRACT: Ciliary neurotrophic factor receptor ? subunit (CNTFR?) and CNTF play important roles in neuron survival, glial differentiation and brain tumor growth. However, the molecular mechanisms of CNTFR? regulation and its clinical significance in glioma remain largely unknown. Here, we found CNTFR? was overexpressed in lower grade gliomas (LGG) compared with glioblastoma (GBM) and normal brain specimens in TCGA datasets and in an independent cohort. Bioinformatics analysis revealed a CpG shore of the CNTFR? gene regulated its mRNA expression in TCGA datasets. This observation was further validated with clinical specimens and functionally verified using demethylating agents. Additionally, we observed that independent of IDH mutation status, methylation of CNTFR? was significantly correlated with down-regulated CNTFR? gene expression and longer LGG patient survival. Interestingly, combination of CNTFR? methylation and IDH mutation significantly (p?

SUBMITTER: Fan K 

PROVIDER: S-EPMC5539284 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature

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Hypomethylation of CNTFRα is associated with proliferation and poor prognosis in lower grade gliomas.

Fan Kun K   Wang Xiaowen X   Zhang Jingwen J   Ramos Romela Irene RI   Zhang Haibo H   Li Chunjie C   Ye Dan D   Kang Jiansheng J   Marzese Diego M DM   Hoon Dave S B DSB   Hua Wei W  

Scientific reports 20170801 1


Ciliary neurotrophic factor receptor α subunit (CNTFRα) and CNTF play important roles in neuron survival, glial differentiation and brain tumor growth. However, the molecular mechanisms of CNTFRα regulation and its clinical significance in glioma remain largely unknown. Here, we found CNTFRα was overexpressed in lower grade gliomas (LGG) compared with glioblastoma (GBM) and normal brain specimens in TCGA datasets and in an independent cohort. Bioinformatics analysis revealed a CpG shore of the C  ...[more]

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