Complement component 3 (C3) expression in the hippocampus after excitotoxic injury: role of C/EBPß.
J Neuroinflammation
; 13(1): 276, 2016 10 21.
Article
em En
| MEDLINE
| ID: mdl-27769255
ABSTRACT
BACKGROUND:
The CCAAT/enhancer-binding protein ß (C/EBPß) is a transcription factor implicated in the control of proliferation, differentiation, and inflammatory processes mainly in adipose tissue and liver; although more recent results have revealed an important role for this transcription factor in the brain. Previous studies from our laboratory indicated that CCAAT/enhancer-binding protein ß is implicated in inflammatory process and brain injury, since mice lacking this gene were less susceptible to kainic acid-induced injury. More recently, we have shown that the complement component 3 gene (C3) is a downstream target of CCAAT/enhancer-binding protein ß and it could be a mediator of the proinflammatory effects of this transcription factor in neural cells.METHODS:
Adult male Wistar rats (8-12 weeks old) were used throughout the study. C/EBPß+/+ and C/EBPß-/- mice were generated from heterozygous breeding pairs. Animals were injected or not with kainic acid, brains removed, and brain slices containing the hippocampus analyzed for the expression of both CCAAT/enhancer-binding protein ß and C3.RESULTS:
In the present work, we have further extended these studies and show that CCAAT/enhancer-binding protein ß and C3 co-express in the CA1 and CA3 regions of the hippocampus after an excitotoxic injury. Studies using CCAAT/enhancer-binding protein ß knockout mice demonstrate a marked reduction in C3 expression after kainic acid injection in these animals, suggesting that indeed this protein is regulated by C/EBPß in the hippocampus in vivo.CONCLUSIONS:
Altogether these results suggest that CCAAT/enhancer-binding protein ß could regulate brain disorders, in which excitotoxic and inflammatory processes are involved, at least in part through the direct regulation of C3.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Complemento C3
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Regulação da Expressão Gênica
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Agonistas de Aminoácidos Excitatórios
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Proteína beta Intensificadora de Ligação a CCAAT
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Hipocampo
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Ácido Caínico
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Degeneração Neural
Tipo de estudo:
Prognostic_studies
Limite:
Animals
Idioma:
En
Revista:
J Neuroinflammation
Assunto da revista:
NEUROLOGIA
Ano de publicação:
2016
Tipo de documento:
Article
País de afiliação:
Espanha