Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Suppressive Effects of By-Product Extracts from Soybean on Adipocyte Differentiation and Expression of Obesity-Related Genes in 3T3-L1 Adipocytes

대두부산물의 지방세포분화 유도유전자의 발현저해 및 전지방세포 분화 억제 효과

  • Choi, Mi-Sun (Department of Biological Science, Andong National University) ;
  • Kim, Jee-In (Department of Biological Science, Andong National University) ;
  • Jeong, Jin-Boo (Department of Medicinal Plant Resource, Andong National University) ;
  • Lee, Su-Bok (Department of Biological Science, Andong National University) ;
  • Jeong, Jae-Nam (Department of Biological Science, Andong National University) ;
  • Jeong, Hyung-Jin (Department of Medicinal Plant Resource, Andong National University) ;
  • Seo, Eul-Won (Department of Biological Science, Andong National University) ;
  • Kim, Taek-Yoon (Quality Control Section, Hahoefood Co.) ;
  • Kwon, Oh-Jun (Industrial Evaluation Agency for Gyeongbuk Province) ;
  • Lim, Jae-Hwan (Department of Biological Science, Andong National University)
  • Received : 2010.10.27
  • Accepted : 2010.12.09
  • Published : 2011.03.30
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Abstract

Soybean is known to contain various phytochemicals that are related to anti-oxidant, anti-inflammatory and anti-obesity effects in mice and humans. The anti-obesity effect of by-product extracts from soybean on the differentiation of 3T3-L1 pre-adipocytes to adipocytes was investigated by suppressing adipocyte differentiation and lipid accumulation with Oil Red-O assay and quantitative PCR. In inducing differentiation of 3T3-L1 pre-adipocytes in the presence of an adipogenic cocktail, isobutylmethylanthine (IBMX), dexamathasone, and insulin, treatment with filtrated soybean soaked water, soybean milk, and soycurd residue from soybean curd processing significantly decreased mRNA expression of obesity-related gene such as PPAR${\gamma}$, Fabp4, and Scd1, adipsin, apolipoprotein (APOE) and adiponectin (ADIPOQ) without any significant cytotoxicity. We also determined the well-known isoflavones in soybean, such as daidzein and genistein, in the by-product extracts. Taken together, we suggest that soybean by-product extract showed anti-obesity effect by suppressing adipocyte related gene expression, and that by-products collected during soybean curd processing may be a good candidate as an ingredient in health care products.

대두는 여러 종류의 파이토케미컬을 함유하고 있으며 이에 의한 항산화, 항염증, 항비만 효능 등이 있음이 잘 알려져 있다. 대두 부산물 성분의 비만억제효능을 확인하기 위하여 Oil-Red O 염색법과 정량 PCR을 통하여 지방세포분화억제 및 지방생성억제 효능을 분석하였다. 분화유도물질인 isobutylmethylanthine (IBMX), dexamathasone 및 insulin 처리에 따른 지방세포 분화유도와 함께 대두부산물-침지수, 순물, 두유-의 처리는 세포손상 없이 지방세포분화 연관 유전자-PPAR${\gamma}$, Fabp4, Scd1, adipsin, apolipoprotein (APOE), adiponectin (ADIPOQ)-의 발현을 감소시키는 효능을 보였다. 또한 대두에서 잘 알려진 isoflavone -daidzein과 genistein- 분석을 통하여 대두 부산물에 포함된 두 종류의 isoflavone의 함량을 확인하였다. 결과적으로 대두부산물에는 지방세포분화유도 유전자의 발현억제를 통한 전지방세포의 분화 및 지방세포의 지방생성을 억제하고 있음을 확인하였다. 따라서 두부생산 시 발생하는 대두부산물은 지방세포분화 억제 효능을 바탕으로 이를 이용하는 건강기능 식품제조에 활용될 수 있을 것으로 판단된다.

Keywords

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