A lincRNA-p21/miR-181 family feedback loop regulates microglial activation during systemic LPS- and MPTP- induced neuroinflammation.
Cell Death Dis
; 9(8): 803, 2018 07 23.
Article
em En
| MEDLINE
| ID: mdl-30038357
ABSTRACT
The role of microglial-mediated sustained neuroinflammation in the onset and progression of Parkinson's disease (PD) is well established, but the mechanisms contributing to microglial activation remain unclear. LincRNA-p21, a well studied long intergenic noncoding RNA (lincRNA), plays pivotal roles in diverse biological processes and diseases. Its role in microglial activation and inflammation-induced neurotoxicity, however, has not yet been fully elucidated. Here, we report that lincRNA-p21 promotes microglial activation through a p53-dependent transcriptional pathway. We further demonstrate that lincRNA-p21 competitively binds to the miR-181 family and induces microglial activation through the miR-181/PKC-δ pathway. Moreover, PKC-δ induction further increases the expression of p53/lincRNA-p21 and thus forms a circuit. Taken together, our results suggest that p53/lincRNA-p21, together with miR-181/PKC-δ, form a double-negative feedback loop that facilitates sustained microglial activation and the deterioration of neurodegeneration.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Microglia
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Intoxicação por MPTP
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MicroRNAs
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RNA Longo não Codificante
Limite:
Animals
Idioma:
En
Revista:
Cell Death Dis
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
China