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MicroRNA and gene expression profile in ischemia reperfusion injury in heart transplantation

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Mus musculus synthetic construct

PROVIDER: GSE50886 | GEO | 2013/09/17

SECONDARY ACCESSION(S): PRJNA219290

REPOSITORIES: GEO

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microRNA and gene expression profile in ischemia reperfusion injury in heart transplantation

Project description:This SuperSeries is composed of the SubSeries listed below. Refer to individual Series

2013-09-17 | E-GEOD-50886 | biostudies-arrayexpress

MicroRNA and mRNA signatures in ischemia reperfusion injury in heart transplantation.

Project description:Ischemia reperfusion (I/R) injury is an unavoidable event occurring during heart transplantation, leading to graft failures and lower long-term survival rate of the recipient. Several studies have demonstrated that microRNAs (miRNAs) are vital regulators of signalling pathways involved in I/R injury. The present study aims to quantify the altered expression levels of miRNA and mRNA upon I/R injury in a mouse heart transplantation model, and to investigate whether these miRNA can regulate genes involved in I/R injury. We performed heterotopic heart transplantation on mouse models to generate heart tissue samples with I/R and non-I/R (control). The expression levels of miRNAs as well as genes were measured in heart grafts by microarray and real time RT-PCR. miRNA alteration in cardiomyocytes exposed to hypoxia was also detected by qRT-PCR. We observed significant alterations in miRNA and gene expression profile after I/R injury. There were 39 miRNAs significantly downregulated and 20 upregulated up to 1.5 fold in heart grafts with I/R injury compared with the grafts without I/R. 48 genes were observed with 3 fold change and p<0.05 and 18 signalling pathways were enriched using Keggs pathway library. Additionally, hypoxia/reperfusion induced primary cardiomyocyte apoptosis and altered miRNA expression profiles. In conclusion, this is the first report on miRNA expression profile for heart transplantation associated with I/R injury. These findings provide us with an insight into the role of miRNA in I/R injury in heart transplantation.

| S-EPMC3835872 | biostudies-literature

MicroRNA Profiling in Ischemia-Reperfusion Injury of the Gracilis Muscle in Rats