Advances in Traditional Medicine

  • 제6권2호
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  • Pages.134-143
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  • 2006
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  • 2662-4052(pISSN)
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  • 2662-4060(eISSN)
경희대학교 융합한의과학연구소 (Kyung Hee Oriental Medicine Research Center)
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Effects of bacterial LPS and DNA on the induction of IL-1β, IL-10 and IL-12 by mouse peritoneal macrophages in vitro

  • Samad, D. Abdel (Department of Microbiology and Immunology, Faculty of Medicine, American University) ;
  • Abdelnoor, AM (Department of Microbiology and Immunology, Faculty of Medicine, American University)
  • 발행 : 2006.06.30
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초록

The capacities of bacterial DNA, extracted from Salmonella typhimurium, and lipopolysaccharide (LPS), extracted from Salmonella minnesota, to activate mouse peritoneal macrophages in vitro were compared. Activation was assessed by estimating e levels of 3 cytokines, IL-10, IL-12, and $IL-1{\beta}$, at time intervals of 3, 6, 9, and 24 h after addition of LPS and/or DNA to macrophage cultures. Cytokine levels in culture supernatants were determined by enzyme-linked immunosorbent assay (ELISA) and cytokine mRNA levels were estimated based on band intensity in cultured cells by reverse transcriptase-polymerase chain reaction (RT-PCR). Results obtained demonstrated the ability of DNA and LPS to elicit increased production of all 3 cytokines as compared to controls. In the amount tested, LPS appeared to be a more potent inducer of IL-12, and $IL-1{\beta}$, whereas DNA induced higher levels of IL-10. DNA and LPS, used in combination, exhibited neither an additive nor a synergistic effect. Rather, an antagonist effect appeared to occur. RT-PCR results correlated well with ELISA.

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