곽향(Agastache rugosa)을 포함한 21종의 한약재가 대식세포주 RAW 264.7 세포의 nitric oxide(NO) 생산 조절에 미치는 효과

Modulatory Effects of 21 kinds of Medicinal Herbs Including Herba Pogostemi (Agastache rugosa) on Nitric Oxide Production in Macrophage Cell line RAW 264.7 cells

  • Kim, Seung-Hyun (Department of Biological Science, Ajou University) ;
  • Kang, Mi-Young (Department of Food science and Nutrition, Kyungpook National University) ;
  • Nam, Seok-Hyun (Department of Biological Science, Ajou University)
  • 발행 : 2005.12.31

초록

마우스 대식세포주인 RAW264.7 세포에서 곽향(Agastache rugosa)을 포함한 21종의 한약재에서 제조한 열수추출물의 NO생산에 대한 조절효과를 조사하였다. 모든 한약재 추출물은 LPS자극으로 생산된 NO에 대하여 뚜렷한 소거활성을 보이지 않았으나, LPS 무처리 조건에서 곽향이 RAW264.7 세포의 NO생산을 강력하게 유도하였다. $200{\mu}M$의 NOS2의 저해제인 $N^G-monomethyl-L-arginine(N^GMMA$)의 처리에 의하여 곽향이 유도하는 NO 생산은 유의적으로 감소되었다. 또한 $NF-{\kappa}B$ 저해제인 pyrrolidine dithiocarbamate(PDTC)의 처리로 NO 생산이 $100{\mu}M$에서 약 79%까지 감소하였다. 이상의 실험 결과는 곽향 열수추출물이 RAW264.7 세포의 NOS2 발현의 이차적인 세포 내 신호를 발생시킬 수 있으며, NO는 L-arginine 의존적 경로에 의하여 생성된다는 사실을 시사하였다.

Aqueous extracts were prepared from 21 medicinal herbs including Herba Pogostemi (Agastache rugosa) to examine their modulatory effects on NO production in mouse macrophage cell line RAW264.7 cells. While almost all medicinal herb extracts failed to show marked scavenging activities to NO produced by LPS stimulation, only Herba Pogostemi showed a rather strong induction of NO production in RAW264.7 cells without stimulation with LPS. When we treated the cell with $200{\mu}M\;of\;N^G-monomethyl-L-arginine\;(N^GMMA)$, a NOS2 inhibitor, a significant reduction in NO production could be observed. Moreover, a treatment of $100{\mu}M$ pyrrolidine dithiocarbamate (PDTC) led to about a 79% reduction of NO production. These results demonstrated that the aqueous extract of Herba Pogostemi might provide a second signal for the expression of NOS2 in RAW264.7 cells, and suggested that Herba Pogostemi induces NO production through L-argininedependent pathway.

키워드

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