کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8839805 1613756 2018 41 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Silencing rno-miR-155-5p in rat temporal lobe epilepsy model reduces pathophysiological features and cell apoptosis by activating Sestrin-3
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
Silencing rno-miR-155-5p in rat temporal lobe epilepsy model reduces pathophysiological features and cell apoptosis by activating Sestrin-3
چکیده انگلیسی
Temporal lobe epilepsy (TLE) is a chronic neurological disease characterized by recurrent spontaneous seizures. MicroRNAs are dysregulated in various pathological conditions including epilepsy. Therefore, we hypothesized that the dysregulation of these microRNAs might also be associated with the pathogenesis of TLE. In this study, we found that a microRNA, hsa-miR-155-5p, was upregulated in patients with TLE post-surgery, and hence associated with clinical and pathological manifestations and seizure outcomes. We then used a rat model of experimental epilepsy induced by pilocarpine and revealed that the rat homologue was upregulated as well. Importantly, injection of an antagomiR of rno-miR-155-5p in vivo resulted in a reduction of the pathophysiological features associated with the status epilepticus, which was accompanied by decrease of apoptosis in the hippocampus. This effect was correlated with an increase in rat Sestrin-3 expression, which was a gene known to counteract oxidative stress. This rescue was also observed after injection of a lentivirus carrying the small interfering RNA of rat Sestrin-3 gene in the hippocampus. In addition, rno-miR-155-5p as well as rat Sestrin-3 mRNA and protein expression were partly dependent on oxidative stress induced by H2O2 in PC12 cells. Taken together, our data suggest that rno-miR-155-5p is a potent post-transcriptional regulator of rat Sestrin-3 and it may be one of the molecular links between brain damage and increased risk for seizures during damage by oxidative stress.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Brain Research - Volume 1689, 15 June 2018, Pages 109-122
نویسندگان
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