Alteration of human macrophages microRNA expression profile upon infection with Mycobacterium tuberculosis

International Journal of Mycobacteriology
Lucinda FurciDaniela M Cirillo

Abstract

Mycobacterium tuberculosis (Mtb) has evolved multiple mechanisms to manipulate its cellular niche for its own advantage. Many efforts have been made to understand basal mechanisms of mycobacterial infections. However, the underlying molecular regulation is not fully understood. Recently, a new class of non-coding, small RNAs, called microRNAs (miRNAs), has emerged as important regulators in biological processes, and their involvement in mycobacterial infection has been identified, thus opening a new field of research. This study aimed to determine by TaqMan Low Density Array the host genome-wide miRNA expression profile of primary human monocyte-derived macrophages (MDM) infected with two members of the Mtb complex: virulent Mtb H37Rv and the non-virulent vaccine strain Mycobacterium bovis Bacillus Calmette-Guerin (BCG) in comparison with chemically-inactivated Mtb bacilli. The findings of this study showed that infection of MDM with H37Rv or BCG results in a signature of miRNA expression mostly overlapping between the two mycobacteria. A substantially different signature emerged from infection with killed virulent bacilli, suggesting an active influence of live intracellular bacteria on cellular miRNA metabolism. Specifically,...Continue Reading

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Jan 14, 2016·International Journal of Molecular Sciences·Fabian BenzTom Luedde
Mar 12, 2016·International Journal of Mycobacteriology·A AmilaM N Norazmi
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