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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Cell+Mol+Med
2018 ; 22
(5
): 2644-2655
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Resveratrol protects mice against SEB-induced acute lung injury and mortality by
miR-193a modulation that targets TGF-? signalling
#MMPMID29512867
Alghetaa H
; Mohammed A
; Sultan M
; Busbee P
; Murphy A
; Chatterjee S
; Nagarkatti M
; Nagarkatti P
J Cell Mol Med
2018[May]; 22
(5
): 2644-2655
PMID29512867
show ga
Staphylococcal enterotoxin B (SEB) is a potent superantigen produced by
Staphylococcus aureus that triggers a strong immune response, characterized by
cytokine storm, multi-organ failure, and often death. When inhaled, SEB can cause
acute lung injury (ALI) and respiratory failure. In this study, we investigated
the effect of resveratrol (RES), a phytoallexin, on SEB-driven ALI and mortality
in mice. We used a dual-exposure model of SEB in C3H/HeJ mice, which caused 100%
mortality within the first 5 days of exposure, and treatment with RES resulted in
100% survival of these mice up to 10 days post-SEB exposure. RES reduced the
inflammatory cytokines in the serum and lungs, as well as T cell infiltration
into the lungs caused by SEB. Treatment with RES also caused increased production
of transforming growth factor-beta (TGF-?) in the blood and lungs. RES altered
the miRNA profile in the immune cells isolated from the lungs. Of these, miR-193a
was strongly induced by SEB and was down-regulated by RES treatment. Furthermore,
transfection studies and pathway analyses revealed that miR-193a targeted several
molecules involved in TGF-? signalling (TGF?2, TGF?R3) and activation of
apoptotic pathways death receptor-6 (DR6). Together, our studies suggest that RES
can effectively neutralize SEB-mediated lung injury and mortality through
potential regulation of miRNA that promote anti-inflammatory activities.