当前位置： SCI文献检索 > CELLULAR AND MOLECULAR NEUROBIOLOGY期刊下所有文献 > LncRNA MEG8 Attenuates Cerebral Ischemia After Ischemic Stroke Through Targeting miR-130a-5p/VEGFA Signaling.

LncRNA MEG8 Attenuates Cerebral Ischemia After Ischemic Stroke Through Targeting miR-130a-5p/VEGFA Signaling.

Abstract：

:MEG8 is involved in ischemia stroke, however, its role in ischemia stroke remains unknown. The current research aimed to investigate the effects and mechanisms of MEG8 in ischemic stroke. Mouse brain microvascular endothelial cells (BMECs) were treated by oxygen-glucose deprivation (OGD). Then, the expressions of MEG8 and miR-130a-5p were detected by quantitative reverse transcription-polymerase chain reaction (q-PCR). Cell counting kit-8 (CCK-8), wound-healing, tube formation, Western blot, and q-PCR assays were performed to detect the effects of MEG8 and miR-130a-5p on cell viability, migration, and angiogenesis and VEGFA expression. Bioinformatics, dual-luciferase reporter assay, and RNA immunoprecipitation analysis were carried out to investigate the targeting relationship between MEG8 and miR-130a-5p, and between miR-130a-5p and VEGFA. Then, rat middle cerebral artery occlusion (MCAO) model and MEG8 overexpression MCAO model were established, and neurological deficit and infarct volume of the model rats were evaluated. Finally, Western blot and q-PCR were carried out to detect the expressions of MEG8, miR-130a-5p, and VEGFA. MEG8 was upregulated and miR-130a-5p was downregulated in OGD-treated BMECs. MiR-130a-5p was found to be a target of MEG8, and VEGFA was predicted to be a potential target of miR-130a-5p. Downregulation of MEG8 inhibited the cell viability, migration, and angiogenesis and the expression of VEGFA via negatively regulating miR-130a-5p of BMECs treated by OGD/non-OGD. In addition, MEG8 reduced cerebral ischemia, neurological score and miR-130a-5p expression, and increased VEGFA expression of MCAO rat. Our findings proved that MEG8 regulates angiogenesis and attenuates cerebral ischemia after ischemic stroke via miR-130a-5p/VEGFA signaling.

journal_name

Cell Mol Neurobiol

journal_title

Cellular and molecular neurobiology

authors

Sui S,Sun L,Zhang W,Li J,Han J,Zheng J,Xin H

doi

10.1007/s10571-020-00904-4

subject

Has Abstract

pub_date

2020-07-05 00:00:00

eissn

0272-4340

issn

1573-6830

pii

10.1007/s10571-020-00904-4

pub_type

杂志文章

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