
11/05/2023
Here is the link to our new paper, published today in Leukemia. The work outlines a novel putative role for a cluster of micro-RNAs (miRNA) all located at 14q32 in the pathogenesis of chronic lymphocytic leukaemia (CLL). Integrative genomic analysis of miRNA and genome-wide expression data revealed pronounced regulatory potential for these 14q32 miRNAs, potentially accounting for up to 25% of the transcriptome signature associated with immunoglobulin heavy variable gene mutational status. GAB1, a positive regulator of BCR signalling, was potentially regulated by five 14q32 miRNAs and we confirmed that two of these (miR-409-3p and miR-411-3p) significantly repressed activity of the GAB1 3′UTR.
Our analysis demonstrates a potential key role of the 14q32 miRNA locus in the regulation of CLL-related gene regulation.
Chronic lymphocytic leukaemia (CLL) cells can express unmutated (U-CLL) or mutated (M-CLL) immunoglobulin heavy chain (IGHV) genes with differing clinical behaviours, variable B cell receptor (BCR) signalling capacity and distinct transcriptional profiles. As it remains unclear how these differences...