Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Immune Enhancing Effect of Medicinal Herb Extracts on a RAW 264.7 Macrophage Cell Line

생약 추출물의 RAW 264.7 세포를 이용한 면역증강 효과

  • Received : 2012.08.27
  • Accepted : 2012.10.12
  • Published : 2012.11.30
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Abstract

Medicinal herbs have long been used as a remedy for diverse diseases in Asia owing to their various pharmacological effect. In this study, the immuno-enhancing activity of medicinal herbs was investigated using macrophage cell lines. Specifically, we examined the effects of extracts of twelve medicinal herbs on nitric oxide (NO) production in RAW 264.7 cells, and selected five that were highly effective (Glycyrrhiza glabra, Rehmannia glutinosa, Angelica gigas, Platycodon grandflorum, and Actinidia polygama) for further immune related studies. The effects of extracts from five theses medicinal herbs, which were mainly composed of polysaccharides and proteins on the production of immune-related cytokines in the RAW 264.7 macrophage cell line and the Molt-4 T cell line were investigated. The extracts of all investigated medicinal herbs increased the production of NO and cytokines such as tumor necrosis factor-alpha (TNF-${\alpha}$), interleukin-1beta (IL-$1{\beta}$), interleukin-6 (IL-6) and interleukin-10 (IL-10). Additionally, they slightly increased the proliferation of T-cells when compared to the control. Overall, the result of this study suggests that the five medicinal herb extracts investigated herein are useful natural immune enhancing agents.

본 연구에서 12종류의 생약재 중 대식세포를 활성화시켜 NO 생성능이 높은 감초, 건지황, 당귀, 도라지, 목천료 5종의 생약재를 선별하였다. 선별된 5종의 생약추출물의 성분을 실험한 결과 단백질, 다당 물질의 함유량이 감초(58.1%), 건지황(90.4%), 당귀(87.4%), 도라지(41.3%), 목천료(85.7%)로 대부분 고분자 물질이 함유되어 있는 것으로 나타났다. 생약추출물이 대식세포를 활성화시켜 면역을 증진시키는 효과를 알아보기 위해 RAW 264.7세포와 T세포를 이용하여 면역활성능 관련 지표를 측정한 결과 5종의 생약재를 RAW 264.7 세포에 처리하였을 때 면역 활성의 지표가 되는 NO, cytokine(TNF-${\alpha}$, IL-$1{\beta}$, IL-6, IL-10)의 생성이 추출물을 처리하지 않은 대조군에 비해 증가되었고, Molt-4 세포에 처리하였을 때 대조군에 비해 세포가 증식되었다. 이와 같은 결과는 고분자 물질인 단백질과 다당으로 이루어진 생약추출물을 섭취 시 외부로부터 침입한 항원이 들어오기 이전에 면역세포를 자극하여 활성을 증가시켜 면역매개물질을 생성하여 인체의 비특이적 면역반응을 증가시킴으로써 항원을 공격, 제거하는 등의 작용을 통해 자연 면역반응에 있어 중요한 역할을 할 수 있을 것으로 보인다.

Keywords

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