Journal
EPIGENOMICS
Volume 7, Issue 3, Pages 461-473Publisher
FUTURE MEDICINE LTD
DOI: 10.2217/epi.15.6
Keywords
chronic lymphocytic leukemia; DNA methylation; miRNAs; tumor suppressor
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DNA methylation is one of the most important epigenetic modifications of the genome involved in the regulation of numerous cellular processes through gene silencing without altering DNA sequences. miRNAs, a class of single-stranded noncoding RNAs of 19-25 nucleotides in length, function as post-transcriptional regulators of gene expression leading to mRNA cleavage or translational repression of their corresponding target protein-coding genes. Recently, dysregulation of tumor suppressor miRNAs mediated by promoter DNA hypermethylation is implicated in human cancers, including B-cell chronic lymphocytic leukemia (CLL). Moreover, it appears that methylated miRNA genes could be potential biomarkers for CLL diagnosis or therapy. This review will highlight the role of aberrant methylation of miRNA genes in the pathogenesis of CLL.
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