Effects of Peroxisome Proliferator-Activated Receptor-gamma on the Production of Tumor Necrosis Factor-alpha in Stimulated Human Monocoytes / 감염과화학요법
Infection and Chemotherapy
; : 291-295, 2010.
Article
em Ko
| WPRIM
| ID: wpr-78360
Biblioteca responsável:
WPRO
ABSTRACT
BACKGROUND: We evaluated the effects of peroxisome proliferator-activated receptor-gamma (PPAR-gamma) on the production of tumor necrosis factor-alpha (TNF-alpha) and expression of nuclear factor-kappaB (NF-kappaB) in stimulated THP-1 cells, a human monocyte cell line. MATERIALS AND METHODS: We evaluated the cytotoxic effect of 15-Deoxy-Delta(12,14)-prostaglandin J(2) (15d-PGJ(2)), one of natural PPAR-gamma ligands, using commercial cell proliferation assay. Cells were pretreated with 15d-PGJ(2) and then stimulated with lipopolysaccharide (LPS) or lipoteichoic acid (LTA). The amount of TNF-alpha was measured by using commercial ELISA method. NF-kappaB activation was evaluated by Western blot analysis. RESULTS: 15d-PGJ(2) showed dose-dependent cytotoxic effect on the tested cells after 4 hr of treatment. Stimulation of cells by LPS or LTA induced TNF-alpha production. TNF-alpha production was markedly decreased in the cells pretreated with 15d-PGJ(2) compared to cells treated only with LPS or LTA in a dose-dependent manner. Pretreatment of 15d-PGJ(2) reduced LPS or LTA induced NF-kappaB expression in the nuclear extracts of THP-1 cells. CONCLUSION: 15d-PGJ(2) pretreatment decreased TNF-alpha production from the THP-1 cells stimulated by LPS or LTA, and this assumed to be associated with inhibition of NF-kappaB activation.
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Texto completo:
1
Índice:
WPRIM
Assunto principal:
Ácidos Teicoicos
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Ensaio de Imunoadsorção Enzimática
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Monócitos
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Linhagem Celular
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Lipopolissacarídeos
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Western Blotting
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NF-kappa B
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Fator de Necrose Tumoral alfa
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Peroxissomos
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Proliferação de Células
Limite:
Humans
Idioma:
Ko
Revista:
Infection and Chemotherapy
Ano de publicação:
2010
Tipo de documento:
Article