IL-10 is a potent anti-inflammatory cytokine that is crucial for down-regulating pro-inflammatory genes, which are induced by Toll-like receptor (TLR) signaling. In this study, we have examined whether modulation of microRNAs plays a role in the inhibitory effect of IL-10 on TLR4 signaling. Analyzing microRNAs known to be induced by TLR4, we found that IL-10 could inhibit the expression of miR-155 in response to lipopolysaccharide but had no effect on miR-21 or miR-146a. IL-10 inhibited miR-155 transcription from the BIC gene in a STAT3-dependent manner. This inhibitory effect of IL-10 on miR-155 led to an increase in the expression of the miR-155 target, SHIP1. This is the first example of IL-10 playing a role in microRNA function and suggests that through its inhibitory effect on miR-155, IL-10 has the ability to promote anti-inflammatory gene expression.
IL-10 Inhibits miR-155 Induction by Toll-like Receptors*
C. McCoy,Frederick J. Sheedy,J. Qualls,Sarah L. Doyle,Susan R. Quinn,P. Murray,L. O’Neill
Published 2010 in Journal of Biological Chemistry
ABSTRACT
PUBLICATION RECORD
- Publication year
2010
- Venue
Journal of Biological Chemistry
- Publication date
2010-04-30
- Fields of study
Biology, Medicine
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
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