Interleukin-1 and interleukin-6 gene expression in human monocytes stimulated with Salmonella typhimurium porins.
Immunology
; 86(4): 612-9, 1995 Dec.
Article
en En
| MEDLINE
| ID: mdl-8567029
ABSTRACT
The aim of this study was to verify whether Salmonella typhimurium porins can affect the expression of interleukin-1 (IL-1) and interleukin-6 (IL-6) genes. Human monocytes were treated with porins, and total RNAs were analysed by Northern blotting to evaluate the expression of IL-1 alpha, IL-1 beta and IL-6 in both treated and untreated cell cultures. Porins induced a significant increase in IL-1 and IL-6 transcripts. This increase was related to the dose of porins, and it peaked 5 hr after treatment. The same results were obtained when polymyxin B was added to the porin preparation to eliminate eventual traces of lipopolysaccharide (LPS) associated with porins. The porins-mediated increase in interleukin transcripts did not require de novo protein synthesis, and it was because of the enhanced half-life of IL-1 and IL-6 mRNAs, rather an increased rate of gene transcription. These data suggest that porins may affect inflammatory and immunological responses by enhancing the expression of cytokine genes.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Salmonella typhimurium
/
Monocitos
/
Interleucina-6
/
Interleucina-1
/
Porinas
Límite:
Humans
Idioma:
En
Revista:
Immunology
Año:
1995
Tipo del documento:
Article
País de afiliación:
Italia