MiR-212 Attenuates MPP+-Induced Neuronal Damage by Targeting KLF4 in SH-SY5Y Cells
Yonsei Medical Journal
;
: 416-424, 2018.
Article
Dans Anglais
| WPRIM
| ID: wpr-714668
ABSTRACT
PURPOSE:
Parkinson's disease (PD) is a common age-dependent neurodegenerative disease. MiR-212 has been demonstrated to exert protective effects in several neurological disorders. The present study aimed to investigate the role and underlying molecular mechanism of miR-212 in PD. MATERIALS ANDMETHODS:
1-methyl-4-phenylpyridinium (MPP+)-induced SH-SY5Y cells were applied as a PD model in vitro. RTqPCR was used to measure the expression of miR-212 and Kruppel-like factor 4 (KLF4) mRNA. Western blot analysis was performed to detect the protein levels of KLF4, Notch1 and Jagged1. Cell viability and apoptosis were determined by the Cell Counting Kit-8 and flow cytometry, respectively. Quantitative analysis of caspase-3 activity, lactate dehydrogenase (LDH), reactive oxygen species (ROS), superoxide dismutase (SOD), tumor necrosis factor-α (TNF-α), and interleukin-1 beta (IL-1β) was conducted with corresponding ELISA kits. Dual-luciferase reporter assay was employed to evaluate the relationship between miR-212 and KLF4.RESULTS:
MiR-212 was downregulated in MPP+-induced SH-SY5Y cells. Also, miR-212 alleviated MPP+-induced SH-SY5Y cell damage, embodied by increased cell viability, decreased caspase-3 activity, LDH release, ROS production, TNF-α, and IL-1β expression, as well as elevated SOD levels. KLF4 was a direct target of miR-212, and miR-212 repressed KLF4 expression in a post-transcriptional manner. Moreover, miR-212-mediated protection effects were abated following KLF4 expression restoration in MPP+-induced SH-SY5Y cells, represented as lowered cell viability and enhanced apoptotic rate. Furthermore, Notch signaling was involved in the regulation of miR-212/KLF4 axis in MPP+-induced SH-SY5Y cells.CONCLUSION:
miR-212 might attenuate MPP+-induced neuronal damage by regulating KLF4/Notch signaling pathway in SH-SY5Y cells, a promising target for PD therapy.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Maladie de Parkinson
/
Superoxide dismutase
/
Techniques in vitro
/
ARN messager
/
Test ELISA
/
1-Méthyl-4-phényl-pyridinium
/
Numération cellulaire
/
Survie cellulaire
/
Technique de Western
/
Espèces réactives de l'oxygène
Type d'étude:
Étude pronostique
langue:
Anglais
Texte intégral:
Yonsei Medical Journal
Année:
2018
Type:
Article
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