LncRNA NEAT1 affects inflammatory response by targeting miR-129-5p and regulating Notch signaling pathway in epilepsy.
Cell Cycle
; 19(4): 419-431, 2020 02.
Article
em En
| MEDLINE
| ID: mdl-31948324
ABSTRACT
It is crucial to understand the molecular mechanisms involved in epileptogenesis. This study aims to investigate the role of lncRNA NEAT1, miR-129-5p and Notch signaling pathway in epilepsy. In this research, temporal lobe tissues were collected from patients with epilepsy and healthy controls. The CTX-TNA cells were treated with IL-1ß to establish as epilepsy cell model, which were then manipulated the expression level of NEAT1, miR-129-5p and Notch1 to investigate their roles in the epilepsy progression. The expression levels of RNA and protein in temporal lobe tissues and epilepsy cell model were determined by RT-qPCR, western blotting or ELISA, respectively. MTT assay was utilized to analyze the cell viability. Dual-luciferase reporter assay was used to explore the interaction relationship between lncRNA NEAT1, miR-129-5p and Notch1. Silencing NEAT1 significantly reduced the expression levels of IL-6, COX-2 and TNF-α in epilepsy cell model. The overexpression of NEAT1 suppressed the expression level of miR-129-5p. Inhibiting miR-129-5p significantly increased the expression of IL-6, COX-2, TNF-α and Notch1. Furthermore, the expression levels of IL-6, COX-2 and TNF-α were increased after overexpressing Notch1 in miR-129-5p mimics-treated cells. The expression levels of Notch1, JAG1, and HES1 were decreased after transfecting with sh-NEAT1. However, compared with sh-NEAT1 group, the expression levels of Notch1, JAG1, HES1, IL-6 and TNF-α were reversed by miR-129-5p inhibition or Notch1 overexpression. The present study verified that lncRNA NEAT1 affected inflammatory response of epilepsy by suppressing miR-129-5p and further regulating Notch signaling pathway in IL-1ß-induced epilepsy cell model.Abbreviations CNS Central nervous system; lncRNAs Long noncoding RNAs; NEAT1 Nuclear-enriched abundant transcript 1; miRNAs MicroRNAs; ATCC American Type Culture Collection; DMEM Dulbecco's Modified Eagle Medium; FBS Fetal bovine serum; ELISA Enzyme-linked immunosorbent assay; RT-qPCR Reverse transcription-quantitative polymerase chain reaction; SD Standard deviation; ANOVA Analysis of variance; LPS Ligand lipopolysaccharide; GLO1 Glyoxalase I.
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Base de dados:
MEDLINE
Assunto principal:
Transdução de Sinais
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MicroRNAs
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Epilepsia
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Receptores Notch
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RNA Longo não Codificante
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Inflamação
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article