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

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Immunomodulatory Activity of Crude Polysaccharide Separated from Cudrania tricuspidata Leaf

꾸지뽕(Cudrania tricuspidata) 잎으로부터 분리된 다당류 추출물의 면역 활성

  • Byun, Eui-Baek (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Jang, Beom-Su (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Sung, Nak-Yun (Department of Food Science and Technology, Kongju National University) ;
  • Byun, Eui-Hong (Department of Food Science and Technology, Kongju National University)
  • Received : 2016.04.12
  • Accepted : 2016.05.25
  • Published : 2016.08.31
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Abstract

The objective of this study was to evaluate the immunomodulatory activity of crude polysaccharide separated from Cudrania tricuspidata leaf. C. tricuspidata polysaccharide (CTP) was extracted by ethanol precipitation. Immunomodulation activity was tested in macrophage cells (RAW 264.7 and bone-marrow derived macrophage) and splenocytes. CTP treatment significantly increased cell proliferation up to $250{\mu}g/mL$ in both RAW 264.7 and bone-marrow derived macrophages. In this concentration range (below $250{\mu}g/mL$), nitric oxide and cytokine [tumor necrosis factor $(TNF)-{\alpha}$ and interleukin (IL)-6] production also significantly increased. Similarly, splenocyte proliferation dosedependently increased except for the $1,000{\mu}g/mL$ treated group. Regarding cytokine production activity in splenocytes, CTP treatment significantly increased production of Th 1 type cytokines [interferon $(IFN)-{\gamma}$] production but not Th 2 type cytokines (IL-4). Therefore, the results indicate that CTP may have a potential effect on immunomodulatory activity in various immune cells, and this is useful for development of immune enhancing adjuvant materials as a natural ingredient.

본 연구는 꾸지뽕 잎으로부터 추출된 다당류인 CTP의 처리가 면역세포의 활성에 미치는 영향에 관하여 평가하였다. CTP는 에탄올 침전법에 의하여 추출하였고, 면역 활성능의 평가는 대식세포주인 RAW 264.7 세포와 미분화 골수세포로부터 유도 분화시킨 대식세포 및 마우스 비장으로부터 유리시킨 비장세포에 CTP를 농도별로 처리하여 관찰하였다. 선천면역계에서 중요한 역할을 수행하는 대식세포에 CTP를 처리하였을 때 세포 증식률, NO 및 cytokine 분비능이 CTP 처리 농도 의존적으로 증가하는 것으로 관찰되었을 뿐만 아니라 비장세포에서도 이와 유사하게 세포 증식률이 증가하고 Th 1 type의 cytokine 분비능 또한 유의적으로 증가하는 것으로 관찰되었다. 이상의 결과로 미루어보아 꾸지뽕다당류 추출물인 CTP는 다양한 면역세포의 활성을 증가시키는 것으로 생각하며 이를 활용하여 다양한 식품 및 건강보조식품을 개발한다면 그 경제적 가치가 매우 클 것으로 생각한다.

Keywords

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