Journal
GENES
Volume 13, Issue 3, Pages -Publisher
MDPI
DOI: 10.3390/genes13030414
Keywords
miRISC; Argonaute; microRNA; TNRC6; chromatin; epigenetics
Categories
Funding
- National Cancer Institute [P30 CA08748]
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Argonaute (AGO) and Trinucleotide Repeat Containing 6 (TNRC6) family proteins are essential components of the mammalian microRNA-induced silencing complex (miRISC) in the cytoplasm. Apart from their well-known role in post-transcriptional gene repression, emerging evidence suggests their involvement in regulating gene expression in the nucleus.
The Argonaute (AGO) and the Trinucleotide Repeat Containing 6 (TNRC6) family proteins are the core components of the mammalian microRNA-induced silencing complex (miRISC), the machinery that mediates microRNA function in the cytoplasm. The cytoplasmic miRISC-mediated post-transcriptional gene repression has been established as the canonical mechanism through which AGO and TNRC6 proteins operate. However, growing evidence points towards an additional mechanism through which AGO and TNRC6 regulate gene expression in the nucleus. While several mechanisms through which miRISC components function in the nucleus have been described, in this review we aim to summarize the major findings that have shed light on the role of AGO and TNRC6 in mammalian chromatin biology and on the implications these novel mechanisms may have in our understanding of regulating gene expression.
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