I. Introduction
MICRORNAS are short non-coding RNAs that play a significant role in post-transcriptional gene regulation [1] [2][3][4][5][6]. In addition, they have also been identified to play a role in oncogenesis [30][31][32] and cardiomyopathies [33][34][35]. MicroRNA biogenesis starts in the nucleus [4] [7], where larger RNA molecules called primary microRNAs are processed into hairpin structures called microRNA precursors (pre-microRNAs) by the nuclear RNase III enzyme Drosha, the pre-mciroRNAs are then transferred by Exportin-5 into the cytoplasm [1][8], where they are acted upon by another RNase III to release the mature microRNAs [1][7].