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Anti-inflammatory Effect of an Ethyl Acetate Fraction from Myagropsis yendoi on Lipopolysaccharides-stimulated RAW 264.7 Cells

LPS로 유도된 RAW 264.7 대식세포에 대한 애기외톨개 모자반(Myagropsis yendoi) 에틸아세테이트 분획물의 항염증 효과

  • Kim, Bowoon (Department of Food Science and Nutrition, Pukyong National University) ;
  • Kim, Jae-Il (Department of Food Science and Nutrition, Pukyong National University) ;
  • Kim, Hyeung-Rak (Department of Food Science and Nutrition, Pukyong National University) ;
  • Byun, Dae-Seok (Department of Food Science and Nutrition, Pukyong National University)
  • 김보운 (부경대학교 식품영양학과) ;
  • 김재일 (부경대학교 식품영양학과) ;
  • 김형락 (부경대학교 식품영양학과) ;
  • 변대석 (부경대학교 식품영양학과)
  • Received : 2014.09.19
  • Accepted : 2014.09.29
  • Published : 2014.10.31

Abstract

An ethanolic extract from Myagropsis yendoi was fractionated using several solvents. Among these, an ethyl acetate fraction (Myagropsis yendoi ethyl acetate fraction: MYE) showed the highest anti-inflammatory activity based on inhibition of lipopolysaccharides (LPS)-induced nitric oxide (NO) production in RAW 264.7 cells. We thus investigated the molecular mechanisms underlying MYE's inhibitory effects. Pretreatment of cells with up to $30{\mu}g/mL$ of MYE significantly inhibited NO production and inducible nitric oxide synthase expression in a dose-dependent manner (P<0.05). Similarly, MYE markedly reduced the production of pro-inflammatory cytokines, such as interleukin (IL)-$1{\beta}$, IL-6, and tumor necrosis factor (TNF)-${\alpha}$, as well as their mRNA levels. While the nuclear translocation of nuclear factor-kappa B (NF-${\kappa}B$) was strongly suppressed by MYE, the activation of a nuclear factor erythroid 2-related factor (Nrf2) was increased. Moreover, MYE significantly reduced the phosphorylation of JNK, p38 MAPK, and phosphatidylinositol 3-kinase/Akt in LPS-stimulated cells. These results indicate that MYE contains anti-inflammatory compounds, and that it might be used as a dietary supplement for the prevention of inflammatory diseases.

Keywords

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