The TERT Promoter is Polycomb-Repressed in Neuroblastoma Cells with Long Telomeres

在端粒较长的神经母细胞瘤细胞中,TERT 启动子受到多梳抑制

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作者:Mindy K Graham, Beisi Xu, Christine Davis, Alan K Meeker, Christopher M Heaphy, Srinivasan Yegnasubramanian, Michael A Dyer, Maged Zeineldin

Significance

The epigenetic landscape of the TERT locus is unique in neuroblastoma. The DNA at the TERT locus, unlike other cancer cells and similar to normal cells, are hypomethylated in telomerase-positive neuroblastoma cells. The TERT locus is repressed by polycomb repressive complex-2 complex in neuroblastoma cells that have long telomeres and do not express TERT. Long telomeres in neuroblastoma cells are also associated with repressive chromatin states at the chromosomal termini, suggesting TPE.

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