Microbiology and Biotechnology Letters (한국미생물·생명공학회지)

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Germanium-Fortified Yeast Activates Macrophage, NK Cells and B Cells and Inhibits Tumor Progression in Mice.

게르마늄 강화효모의 마우스에서의 암세포 억제 및 대식세포, NK 세포, B 세포의 활성화에 관한 연구

  • 백대헌 (게란티제약 ㈜ 중앙연구소) ;
  • 정진욱 (게란티제약 ㈜ 중앙연구소) ;
  • 손창욱 (게란티제약 ㈜ 중앙연구소) ;
  • 강종구 (충북대학교 수의과대학)
  • Published : 2007.06.28
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Abstract

Germanium-fortified yeast (GY) is a organic germanium-fortified yeast with potent immune modulating activities including anti-inflammatory effect. Through cell line studies, we observed that GY can modulate the diverse immune activity but little evidence was provided on the mechanism of GY in modulating immune activities in other higher animals. In this study, we investigated the effect of GY on modulation of immune function in mice. GY was administered in normal mice or tumor-bearing mice and then effect of GY on modulation of host immune system was analyzed by using ex vivo isolated macrophages, B cells, NK cells. Admistration of GY in mice induced macrophage activation thereby increased effector function of macrophage such as increased phagocytosis, chemotaxis, adherence, $O_2-release$, NO, $TNF-{\alpha}$ production. In addition, GY administration Increased B lymphocyte activation and plaque forming cells. Furthermore, GY administration increased NK-cell mediated cytotoxicity. Furthermore, GY administration suppressed progression of tumor in mice by increasing $TNF-{\alpha}$ production and effector function of NK cells. Our results showed that GY has a potent immunostimulatory function in vivo mice model. Proper modulation and administration of GY in human could be helpful to maintaining immunological homeostasis by modulating host immune system.

본 연구는 마우스를 대상으로 유기게르마늄 강화효모 경구투여에 의한 면역조절작용 효과를 확인하고자 하였다. 마우스를 대상으로 9일간 경구투여한 결과 대조군인 게르마늄 비강화 효모 투여군에 비해 복강대식세포, B세포, NK 세포의 활성이 현저히 증가한 것으로 확인되었으며, 최종 실험결과 대식세포는 게르마늄 강화효모 투여 후 식세포활성, 주화성, 부착성, rosette 형성능 현저히 증가하였다. Superoxide $anion(O_2^-)$ 생성능은 대조군에 비해 유기게르마늄 강화군 투여군에서 3배 활성이 증가하였으며, NO 생성능과 $TNF-{\alpha}$ 생성능도 농도의존적으로 증가하였다. B-세포 활성화에 의한 cytolytic activity 증가에 의한 PFC형성능도 게르마늄 비강화 효모에 비해 현저히 증가하였으며 상업화 유기게르마늄으로 알려지고 있는 Ge-132에 비해 2배 이상 높은 활성이 확인되었다. Cytotoxic acivity에 의한 항 종양활성에서는 양성대조군인 Doxorubicin 투여군에서와 유사한 저해활성을 나타내었으며 고용량 유기게르마늄 효모(2,400 mg/kg) 투여시 60%의 종양활성 억제효과가 확인되었다. 이러한 결과를 종합해 볼 때 유기게르마늄 강화효모가 실험동물 뿐만 아니라 인체의 유용한 면역조절제로서의 이용성이 기대된다.

Keywords

References

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