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CEBPA-AS1 Knockdown Alleviates Oxygen-Glucose Deprivation/Reperfusion-Induced Neuron Cell Damage by the MicroRNA 24-3p/BOK Axis.


ABSTRACT: Cerebral ischemia/reperfusion (I/R) can lead to serious brain function impairments. Long noncoding RNA (lncRNA) CCAAT enhancer binding protein α antisense RNA 1 (CEBPA-AS1) was shown to be upregulated in human ischemic stroke. This study investigated the function and mechanism of CEBPA-AS1 in I/R. An oxygen-glucose deprivation/reperfusion (OGD/R) model was used to induce I/R injury in SH-SY5Y cells in vitro. RT-qPCR examined the expression of CEBPA-AS1, microRNA 24-3p (miR-24-3p), and Bcl-2-related ovarian killer (Bok). The cell viability, apoptosis, oxidative stress in OGD/R-treated cells were detected using CCK-8, flow cytometry, Western blotting, and enzyme-linked immunosorbent assays. The relationship among genes was tested by RNA pulldown and luciferase reporter assays. We found that OGD/R upregulated CEBPA-AS1 expression in SH-SY5Y cells. Functionally, CEBPA-AS1 depletion ameliorated OGD/R-induced apoptosis and oxidative stress in SH-SY5Y cells by reducing reactive oxygen species production and superoxide dismutase and glutathione. Mechanistic investigations indicated that CEBPA-AS1 acts as a sponge for miR-24-3p, and miR-24-3p binds to BOK. Moreover, miR-24-3p upregulation or BOK downregulation antagonized the protective role of CEBPA-AS1 depletion in SH-SY5Y cells exposed to OGD/R. Overall, downregulation of CEBPA-AS1 exerts protective functions against OGD/R-induced injury by targeting the miR-24-3p/BOK axis.

SUBMITTER: Di G 

PROVIDER: S-EPMC8300783 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature

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CEBPA-AS1 Knockdown Alleviates Oxygen-Glucose Deprivation/Reperfusion-Induced Neuron Cell Damage by the MicroRNA 24-3p/BOK Axis.

Di Guangfu G   Yang Xinjie X   Cheng Feng F   Liu Hua H   Xu Min M  

Molecular and cellular biology 20210723 8


Cerebral ischemia/reperfusion (I/R) can lead to serious brain function impairments. Long noncoding RNA (lncRNA) CCAAT enhancer binding protein α antisense RNA 1 (<i>CEBPA-AS1</i>) was shown to be upregulated in human ischemic stroke. This study investigated the function and mechanism of <i>CEBPA-AS1</i> in I/R. An oxygen-glucose deprivation/reperfusion (OGD/R) model was used to induce I/R injury in SH-SY5Y cells <i>in vitro</i>. RT-qPCR examined the expression of <i>CEBPA-AS1</i>, microRNA 24-3p  ...[more]

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