Abstract:
:MicroRNAs (miRs) were only discovered little more than a decade ago, yet it has become rapidly clear that they are crucial posttranscriptional regulators of gene expression by decreasing the abundance or translational efficiency of mRNAs [Maroney PA, Yu Y, Nilsen TW. MicroRNAs, mRNAs, and translation. Cold Spring Harb Symp Quant Biol 2006;71: 531-5; Nilsen TW. Mechanisms of microRNA-mediated gene regulation in animal cells. Trends Genet 2007;23: 243-9], [1,2]. While the role of miRs in cell fate decisions linked to proliferation, differentiation and apoptosis was recognized early on, the importance of these noncoding small RNAs on immune system development and response has only recently become evident. In addition to facilitating cell fate decisions of immune cells (e.g. miR-181a and miR-223), miRs also regulate central elements of the adaptive immune response such as antigen presentation (e.g. miR-155) and T cell receptor signaling (mir-181a). Furthermore, miRs are involved in innate immunity through regulation of Toll-like receptor signaling and cytokine responses (e.g. miR-146). Intriguingly, cellular miRs not only alter immune cell development and function, but are also able to directly affect viral replication. Conversely, virus-encoded miRs shape the host-virus interactions and regulate the viral life cycle. Here, we provide a brief overview on the role of cellular and viral miRs in the development and function of the immune system.
journal_name
Cytokinejournal_title
Cytokineauthors
Pedersen I,David Mdoi
10.1016/j.cyto.2008.07.016subject
Has Abstractpub_date
2008-09-01 00:00:00pages
391-4issue
3eissn
1043-4666issn
1096-0023pii
S1043-4666(08)00228-7journal_volume
43pub_type
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