Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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In vitro Bone Marrow Cell Proliferation of Cell Wall Preparation from Bifidobacterium bifidum SL-21

Bifidobacterium bifidum SL-21의 세포벽 조제성분에 의한 in vitro 골수세포 증식활성

  • Shin, Myong-Sook (Department of Food Science and Biotechnology, Kyonggi University) ;
  • Yu, Kwang-Won (Department of Kimchi and Food Science, Chongju National College of Science and Technology) ;
  • Shin, Kwang-Soon (Department of Food Science and Biotechnology, Kyonggi University) ;
  • Lee, Ho (Department of Food Science and Biotechnology, Kyonggi University)
  • 신명숙 (경기대학교 식품생물공학과) ;
  • 유광원 (청주과학대학 김치식품과학과) ;
  • 신광순 (경기대학교 식품생물공학과) ;
  • 이호 (경기대학교 식품생물공학과)
  • Published : 2004.06.30
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Abstract

Bifidobacterium species isolated from infant feces were fractionated into cell wall, cytosol, and extracellular preparations of culture broth, and each fraction was examined for Peyer's patch-mediated bone marrow cell proliferation activity in vitro. Cell wall preparation of B. bifidum SL-21 (CWP) showed the highest bone marrow cell proliferating activity dose dependently, and enhanced production of cytokines, such as hematopoietic growth factor (GM-CSF), IL-2, and IL-6, in culture supernatant of Peyer's patch cells, After treatment with lysozyme, CWP was fractionated, among which intermediate molecular-weight fraction (30-50 kDa) showed significantly high bone marrow cell proliferating activity. These results suggest CWP of B. bifidum SL-21 effectively activates lymphocytes in Peyer's patch, and several cytokines, possibly playing important role in enhancement of systemic immune system, were produced by activated lymphocytes.

인간의 장내 상재 세균이며 인간에게 다양한 건강 증진 효과를 부여하는 것으로 알려진 Bifidobacterium속을 유아의 분변으로부터 분리하여 세포질, 세포벽 및 배양액의 고분자 획분을 대상으로 in vitro에서 장관면역계를 경유한 골수세포 증식활성을 검토하였다 분리한 6종의 Bifidobacterium속 중에서 Bifidobacterium SL-21의 세포벽 성분(CWP)이 농도 의존적으로 가장 높은 골수세포의 증식을 나타내었다. 한편, 골수세포 증식은 Peyer's patch를 매개로 일어나는 반응이므로 Peyer's patch에 의해 생성되는 cytokine류의 활성을 측정하였다. B. bifidum SL-21의 세포벽 성분과의 반응에 의해 GM-CSF, IL-2 및 IL-6 등의 cytokine류의 생산 증가가 확인되었으며 cytokine의 생산은 반응한 세포벽 성분에 농도 의존적 경향을 보였고 골수세포 증식이 증가할수록 높은 cytokine 생산 증가를 나타냈다. 불용성인 B. bifidum SL-21 세포벽을 lysozyme 처리하여 수용화시켜 분자량에 따른 활성을 검토한 결과, 분자량 30-50 kDa의 획분에서 가장 높은 골수세포 증식활성이 측정되었다. 이와 같은 결과를 토대로 하여 B. bifidum SL-21 세포벽 성분이 Peyer's patch의 림프구를 활성화시키고 이들 활성화된 림프구에서 생성되는 cytokine류에 의해 골수세포 증식이 이루어짐을 확인할 수 있었다. 또한 이들 활성화된 면역세포는 CM-CSF, IL-2 및 IL-6 등의 전신순환 면역계의 증강에 중요한 역할을 갖는 cytokine류를 생산하였다.

Keywords

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