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MiR-146a Mimic Attenuates Murine Allergic Rhinitis by Downregulating TLR4/TRAF6/NF-κB Pathway

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Journal Immunotherapy
Date 2019 Jul 31
PMID 31361168
Citations 20
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Abstract

This study aims to investigate whether microRNA (miR)-146a exerts therapeutic potential to allergic rhinitis (AR). Female BALB/c mice were randomly divided into the AR and miR-146a groups. miR-146a was administered into the nostril before ovalbumin (OVA) challenge daily on days 21-28. The expression level of miR-146a in AR nasal mucosa was significantly decreased. miR-146a mimic markedly attenuated sneezing and nasal rubbing events, decreased the levels of ovalbumin-specific IgE as well as mastocyte- and basophil-related inflammatory cytokines, reduced inflammatory cells, affected the T-helper 2-released cytokines. Furthermore, miR-146a mimic inhibited the expressions of proteins relevant to Toll-like receptor 4 (TLR4)/TRAF6/NF-κB signaling pathway. The anti-inflammatory effects of miR-146a on AR might exert through the inhibition of the toll-like receptor 4 (TLR4)/TRAF6/NF-κB signaling pathway to some extent.

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