Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Characterization and Pharmacological Effect of Mung Bean Trypsin Inhibitor

녹두(Vigna radiata L.) Trypsin Inhibitor의 정제 및 약물학적 특성

  • Published : 2002.10.01
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Abstract

A kypsin inhibitor was isolated and purified from Mung bean (Vigna radiata L. wilczek) which has been used as a galenic and traditional food. In addition, we evaluated the pharmacological effect of the mung bean trypsin inhibitor (MBTI) using septic shock induced guinea pig model. Purification was carried out by Sephadex G-50 gel filtration, DEAE-cellulose ion exchange chromatography, and trypsin affinity column. The molecular weight of MBTI was estimated to be about 8,000 Da by 20% SDS-PACE under reducing condition. The chemically determined partial amino acid sequences of the purified MBTI perfectly coincide with those of previously reported MBTI which is BBI type trypsin inhibito. (Bowman-birk inhibitor type). These results suggest that the purified MBTI is authentic. Hypotension shock was prevented by the pretreatment of the MBTI (10 mg/kg of the body weight) on the septic shock guinea pig model caused by psedomonal elastase.

우리나라에서 식용으로 뿐만아니라 한방재료로 널리 사용되고 있는 녹두(vigna radiata L. wilczek) 로부터 trypsin inhibitor (Mung bean trypsin inhibitor, MBTI)를 분리정제하여 그 특성을 조사하였다 또한 병태동물모델 즉, septic shock induced guinea pig model을 이용하여 MBTI의 약물학적 효과를 평가하였다. MBTI의 분리 및 정제과정은 Sephadex C-50 chromatography, DEAE-celluloseion exchange chromatography 및 trypsin affinity column 을 차례로 이용하였다. 정제한 MBTI는 전기영동 및 아미노산 서열분석결과 분자량 약 8,000 Da 의 BBI-type (Bowman-birk inhibitor type)임을 알 수 있었으며 이들의 생화학적 특성을 구명하였다. 또한 pseudomonal elastase로 유도된 septic shock guinea pig model에서 MBTI 10 mg/kg를 전처치한 결과 hypotention shock 유발이 억제됨을 알 수 있었다.

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