Enhancer dysfunction in leukemia

被引:26
作者
Bhagwat, Anand S. [1 ]
Lu, Bin [1 ]
Vakoc, Christopher R. [1 ]
机构
[1] Cold Spring Harbor Lab, 1 Bungtown Rd, Cold Spring Harbor, NY 11724 USA
基金
美国国家卫生研究院;
关键词
ACUTE MYELOID-LEUKEMIA; ACUTE LYMPHOBLASTIC-LEUKEMIA; CHRONIC LYMPHOCYTIC-LEUKEMIA; GENOME-WIDE ASSOCIATION; CELL IDENTITY GENES; LONG NONCODING RNAS; SUPER-ENHANCERS; TRANSCRIPTIONAL ACTIVATION; MALIGNANT HEMATOPOIESIS; SELECTIVE-INHIBITION;
D O I
10.1182/blood-2017-11-737379
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Hematopoietic cancers are often initiated by deregulation of the transcriptional machinery. Prominent among such regulators are the sequence-specific DNA-binding transcription factors (TFs), which bind to enhancer and promoter elements in the genome to control gene expression through the recruitment of cofactors. Remarkably, perturbing the function of even a single TF or cofactor can modulate the active enhancer landscape of a cell; conversely, knowledge of the enhancer configuration can be used to discover functionally important TFs in a given cellular process. Our expanding insight into enhancer function can be attributed to the emergence of genome-scale measurements of enhancer activity, which can be applied to virtually any cell type to expose regulatory mechanisms. Such approaches are beginning to reveal the abnormal enhancer configurations present in cancer cells, thereby providing a framework for understanding how transcriptional dysregulation can lead to malignancy. Here, we review the evidence for alterations in enhancer landscapes contributing to the pathogenesis of leukemia, a malignancy in which enhancer-binding proteins and enhancer DNA itself are altered via genetic mutation. We will also highlight examples of small molecules that reprogram the enhancer landscape of leukemia cells in association with therapeutic benefit.
引用
收藏
页码:1795 / 1804
页数:10
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