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Abstract
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.
Financial & competing interests disclosure
The authors have no relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript. This includes employment, consultancies, honoraria, stock ownership or options, expert testimony, grants or patents received or pending or royalties.
No writing assistance was utilized in the production of this manuscript.