SETD5-AS1 stimulates neuron death in stroke via promoting PTEN expression

• Published in: European review for medical and pharmacological sciences Vol. 22; no. 18; p. 6035
• Main Authors: Miao, S-Y, Miao, S-M, Cui, R-T, Yu, A-L, Miao, Z-J
• Format: Journal Article
• Language: English
• Published: Italy 01.09.2018
• Subjects: Animals; Apoptosis; Cell Death; Cell Line; Cell Proliferation; Disease Models, Animal; Infarction, Middle Cerebral Artery - genetics; Infarction, Middle Cerebral Artery - metabolism; Male; Mice; Phosphatidylinositol 3-Kinases - metabolism; Proto-Oncogene Proteins c-akt - metabolism; PTEN Phosphohydrolase - genetics; PTEN Phosphohydrolase - metabolism; RNA, Long Noncoding - genetics; Signal Transduction; Stroke - genetics; Stroke - metabolism; Up-Regulation
• ISSN: 2284-0729

To investigate the specific role of long non-coding RNA (lncRNA) SETD5-AS1 in regulating stroke development, and its underlying mechanism. Middle cerebral artery occlusion (MCAO) model and OGD/R (oxygen-glucose deprivation/reoxygenation) model were constructed for exploring the mechanism of ischemia-reperfusion injury induced by ischemic stroke. SETD5-AS1 expression in brain tissues of ischemic stroke mice and control mice was detected by quantitative Real-time-polymerase chain reaction (qRT-PCR). Proliferation and apoptosis of N2a cells were detected after transfection of overexpression plasmid or siRNA SETD5-AS1. The downstream gene of SETP5-AS1 was predicted by Starbase and PTEN was screened out. Both mRNA and protein expressions of PTEN in MCAO model and OGD/R model were detected. Furthermore, the binding condition of SETD5-AS1 and PTEN was verified by dual-luciferase reporter gene assay, RNA pull-down assay and RNA binding protein immunoprecipitation (RIP). The regulatory effect of SETD5-AS1 on PI3K/AKT pathway was detected by Western blot. SETD5-AS1 was highly expressed in the ischemia-reperfusion injury model. Overexpression of SETD5-AS1 in N2a cells resulted in increased apoptosis and decreased proliferation. PTEN expression was upregulated in MCAO model and OGD/R model. Dual-luciferase reporter gene assay indicated that SETD5-AS1 can promote PTEN transcription. The binding condition of SETD5-AS1 and PTEN was further verified by RNA pull-down assay and RIP. Overexpression of SETD5-AS1 in N2a cells inhibited PI3K/AKT pathway. SETD5-AS1 is highly expressed in the ischemia-reperfusion injury model. SETD5-AS1 participates in the development of ischemic stroke by activating PTEN and inhibiting PI3K/AKT pathway.