Salman Khan, Eun Myoung Shin, Sa Wang Baek, Jinwoong Kim, Yeong Shik Kim
언어
영어(ENG)
URL
https://www.earticle.net/Article/A192664
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원문정보
초록
영어
Leonurus japonica (syn L. heterophyllus Sweet) or Chinese motherwort is a herbaceous annual of pantropical distribution of the Lamiaceae family. Extracts of aerial parts are used in Chinese medicine for various purposes such as heart anti-arrhythmic, sedative, antimicrobial, anticoagulant, antioxidant and anti-tumoral properties, as well as booster of the immune response. The present study illustrated that, the water and 70% ethanol extracts of L. japonica exhibited no significant effect on NO and NF-κB SEAP reporter gene assay, using LPS-stimulated RAW264.7 cells. Several metabolites have been isolated from L. japonicus that substantiate the recorded activities. Five compounds were tested for anti-inflammatory effect. Leonurine, rutine, genkwanine, and stachydrine hydrochloride showed no promising effect on NO and NF-κB. On the other hand, the novel labdan diterpene derivative, 15, 16-epoxy-3-hydroxylabda-8, 13(16), 14-trien-7-one, exhibited potent inhibitory effect on the iNOS and COX-2 protein expression using LPS-stimulated RAW264.7 cells, macrophages. As a mechanism of anti-inflammatory action shown by 15,16-epoxy-3-hydroxylabda-8,13(16), 14-trien-7-one, suppression of nuclear factor (NF)-κB activation has been documented. Furthermore, the labdan compound exhibited significant inhibitory effect on LPS-medicated NF-κB-DNA binding and AP-1-DNA binding activitiesusing electrophoretic mobility shift assay (EMSA) 32P-labeled NF-κB and AP-1 probes. Taken together, labdan diterpene 15, 16-epoxy-3-hydroxylabda-8, 13(16), 14-trien-7-one, suppressed LPS-induced NF-κB activation, resulting down-regulation of iNOS and COX-2 protein expression, which was attributable to its inhibitory action of LPS-induced NO and PGE2 production. These results may contribute to the anti-inflammatory activity of 15, 16-epoxy-3-hydroxylabda-8, 13(16), 14-trien-7-one.
저자
Salman Khan [ Natural Products Research Institute, College of Pharmacy, Seoul National University ]
Eun Myoung Shin [ Natural Products Research Institute, College of Pharmacy, Seoul National University ]
Sa Wang Baek [ Natural Products Research Institute, College of Pharmacy, Seoul National University ]
Jinwoong Kim [ Natural Products Research Institute, College of Pharmacy, Seoul National University ]
Yeong Shik Kim [ Natural Products Research Institute, College of Pharmacy, Seoul National University ]
Corresponding author
본 학회는 화학, 생화학, 분자생물학, 미생물학, 식품공학, 의학, 약학, 유전공학 및 생물공학, 환경 및 기타 공업 등 전 분야의 탄수화물관련 이론과 기술을 연구 발전시키고 산학협동을 통해 이를 보급하여 국내 관련 산업의 발전 및 국민생활의 과학화에 기여하고자 하며, 이러한 목표와 비젼의 실현을 위해 회원들이 적극적인 참여와 활동을 전개하고자 한다.