Journal
IMMUNOLOGICAL INVESTIGATIONS
Volume 43, Issue 2, Pages 182-195Publisher
TAYLOR & FRANCIS INC
DOI: 10.3109/08820139.2013.863557
Keywords
Cre expression; dicer; immunity; microRNA; RNA interference
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Funding
- NCI [CA124971, P30 CA16056]
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Dicer is an enzyme of the RNase III endoribonuclease family, which is crucial for RNA interference (RNAi) in eukaryotes. Dicer is a component of the protein machinery (the RNA Induced Silencing Complex [RISC]) which is involved in catalyzing the formation of mature microRNAs from their precursors in the process of microRNA biogenesis. RISC-associated microRNAs bind to specific sequences in the 3' untranslated region of cognate mRNAs largely through complementary base pairing, resulting in either translational inhibition and/or the degradation of a specific mRNA pool. MicroRNAs epigenetically regulate the cellular levels of receptors, transcription factors and signaling proteins that govern the developmental pathways and functions of multiple cellular processes. The pivotal role played by Dicer in microRNA formation has also piqued the interest of molecular immunologists who have sought to understand the biological relevance of microRNAs in the development and function of the immune system. Here, we review the major findings of these studies and provide an overview of the role of Dicer and microRNAs in immune cell development and function. Additionally, we highlight deficiencies in our knowledge and new research areas that may enhance our understanding of the role of Dicer and microRNAs in immunity.
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