Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Anti-oxidative and Anti-inflammatory Activities of Desmodium heterocarpon Extract in RAW 264.7 Cells

RAW 264.7 세포에서 Desmodium heterocarpon 추출물의 항산화 및 항염증 활성

  • Lee, Su Hyeon (Blue-Bio Industry Regional Innovation Center, Dong-Eui University) ;
  • Jin, Kyong-Suk (Blue-Bio Industry Regional Innovation Center, Dong-Eui University) ;
  • Son, Yu Ri (Blue-Bio Industry Regional Innovation Center, Dong-Eui University) ;
  • Kwon, Hyun Ju (Blue-Bio Industry Regional Innovation Center, Dong-Eui University) ;
  • Kim, Byung Woo (Blue-Bio Industry Regional Innovation Center, Dong-Eui University)
  • 이수현 (동의대학교 블루바이오소재개발 및 실용화 지원센터) ;
  • 진경숙 (동의대학교 블루바이오소재개발 및 실용화 지원센터) ;
  • 손유리 (동의대학교 블루바이오소재개발 및 실용화 지원센터) ;
  • 권현주 (동의대학교 블루바이오소재개발 및 실용화 지원센터) ;
  • 김병우 (동의대학교 블루바이오소재개발 및 실용화 지원센터)
  • Received : 2017.11.08
  • Accepted : 2018.02.09
  • Published : 2018.02.28
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Abstract

Desmodium heterocarpon is one of vines belongs to Fabaceae family, mainly distributed in Asian countries such as Korea and Japan. This study was conducted to explore new nutraceutical resources from the plant kingdom possessing biological activities. To fulfill this purpose, the anti-oxidative and anti-inflammatory activities of D. heterocarpon ethanol extract (DHEE) were evaluated by 1,1-diphenyl-2-picryl hydrazyl (DPPH) radical scavenging activity assay, reactive oxygen species (ROS) scavenging activity assay, nitric oxide (NO) inhibitory activity assay, and the analysis of related protein expressions by Western blot hybridization. DHEE exhibited potent anti-oxidative activity as confirmed by DPPH radical scavenging capacity against DPPH similar with ascorbic acid, a well-known anti-oxidative agent, used as a positive control. DHEE also effectively suppressed hydrogen peroxide ($H_2O_2$)-induced ROS on RAW 264.7 murine macrophage cells. Furthermore, DHEE induced the expression of the anti-oxidative enzyme heme oxygenase 1 (HO-1), and its upstream transcription factor, nuclear factor-E2-related factor 2 (Nrf2) as a dose dependent manner. DHEE inhibited lipopolysaccharide (LPS) induced nitric oxide (NO) formation as a consequence of inducible NO synthase (iNOS) down regulation. Taken together, these results suggest that DHEE has anti-oxidative and anti-inflammatory activities and thus appears to be useful sources as potential anti-oxidant and anti-inflammatory agents. The identification of active compounds that confer biological activities of DHEE might be needed.

Desmodium heterocarpon은 콩과에 속하는 덩굴식물로 주로 한국, 일본 등의 아시아 국가에 분포되어 있다. 본 연구에서는 식물에 존재하는 신규 기능성 소재 개발의 일환으로 Desmodium heterocarpon 에탄올 추출물(DHEE)의 항산화 및 항염증 생리활성을 DPPH 라디칼 소거능, ROS 소거능, NO 생성 억제능 및 관련 단백질 발현을 통해 분석하였다. 먼저 DHEE의 항산화능을 DPPH 라디칼 소거능을 통해 분석한 결과 높은 소거활성을 보여 DHEE가 매우 강한 항산화능을 보유함을 확인하였다. 또한 RAW 264.7 세포주에서 H2O2에 의해 유도된 ROS에 대한 DHEE의 소거능을 분석한 결과 농도의존적인 강한 ROS 소거능을 보였다. 뿐만 아니라 대표적인 항산화 효소 중 하나로 항산화능 보유 천연물에 의해 발현이 유도되는 HO-1 및 그 전사 인자인 Nrf2의 단백질 발현이 DHEE의 처리에 의해 유의적으로 증가됨을 보였다. 한편 DHEE가 LPS에 의해 유도된 NO 생성에 미치는 영향을 분석한 결과 농도 의존적인 NO 생성 저해능을 보였으며 이는 NO 생성 단백질인 iNOS의 발현 저해에서 기인함을 확인하였다. 이러한 결과를 통해 DHEE의 높은 항산화능과 항염증 활성을 확인하였으며 향후 잠재적인 기능성 소재로서 유용하게 활용될 수 있을 것으로 판단된다. 추후 계속적인 연구를 통해 활성 물질의 규명이 필요할 것으로 보인다.

Keywords

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