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2017 ; 8
(10
): e3127
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MicroRNA-378 protects against intestinal ischemia/reperfusion injury via a
mechanism involving the inhibition of intestinal mucosal cell apoptosis
#MMPMID29022896
Li Y
; Wen S
; Yao X
; Liu W
; Shen J
; Deng W
; Tang J
; Li C
; Liu K
Cell Death Dis
2017[Oct]; 8
(10
): e3127
PMID29022896
show ga
Intestinal ischemia/reperfusion (I/R) injury remains a major clinical event and
contributes to high morbidity and mortality rates, but the underlying mechanisms
remain elusive. Recent studies have demonstrated that microRNAs (miRNAs) have
important roles in organ I/R injury, but the changes and potential roles of
miRNAs in intestinal I/R-induced intestinal injury are unclear. This study was
designed to analyze the miRNA expression profiles in intestinal mucosa after I/R
injury and to explore the role of target miRNA during this process. Using miRNA
microarray analysis, we found changes of 19 miRNAs from the expression profile of
miRNAs in a mouse model of intestinal I/R and further verified them by RT-qPCR.
Here, we report that miR-378 is one of the markedly decreased miRNAs and found
the putative target mRNA that is linked to cell death after applying the
TargetScan, miRanda, CLIP-Seq and miRDB prediction algorithms. Our results show
that the overexpression of miR-378 significantly ameliorated intestinal tissue
damage in wild-type and transgenic mice and oxygen glucose
deprivation/reperfusion-challenged IEC-6 cell injury. Moreover, miR-378
overexpression reduced intestinal epithelial cell apoptosis in both in vivo and
in vitro ischemic models and attenuated cleaved caspase-3 expression.
Collectively, our results revealed that the suppression of caspase-3 activation
by miRNA-378 overexpression may be involved in the protective effects of
intestinal ischemic damage. MiRNA-378 may serve as a key regulator and
therapeutic target in intestinal I/R injury.