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단풍취 열수 추출물의 HepG2 인간간세포의 LPS/D-Gal에 의해 유발된 급성 간 손상에 대한 간보호 효과

Hepatoprotective effect of Ainsliaea acerifolia water extract on LPS/D-GalN-induced acute liver injury in human HepG2 cells

  • 이선엽 ((재)춘천바이오산업진흥원 기술개발실) ;
  • 한준희 ((재)춘천바이오산업진흥원 기술개발실) ;
  • 최다혜 ((재)춘천바이오산업진흥원 기술개발실) ;
  • 홍민 ((재)춘천바이오산업진흥원 기술개발실) ;
  • 권태형 ((재)춘천바이오산업진흥원 기술개발실) ;
  • 이용진 ((재)춘천바이오산업진흥원 기술개발실) ;
  • 유근형 ((재)춘천바이오산업진흥원 기술개발실)
  • Lee, Sun-Yeop (Department of Research and Development, Chuncheon Bioindustry Foundation) ;
  • Han, Joon-Hee (Department of Research and Development, Chuncheon Bioindustry Foundation) ;
  • Choi, Da-Hye (Department of Research and Development, Chuncheon Bioindustry Foundation) ;
  • Hong, Min (Department of Research and Development, Chuncheon Bioindustry Foundation) ;
  • Kwon, Tae-Hyung (Department of Research and Development, Chuncheon Bioindustry Foundation) ;
  • Lee, Yong-Jin (Department of Research and Development, Chuncheon Bioindustry Foundation) ;
  • Yu, Keun-Hyung (Department of Research and Development, Chuncheon Bioindustry Foundation)
  • 투고 : 2020.08.10
  • 심사 : 2020.09.06
  • 발행 : 2020.10.31

초록

본 연구에서는 간보호 활성이 우수한 것으로 알려진 단풍취의 활용가치를 높이고 향후 건강기능성식품 소재로써의 가능성을 알아보고자 LPS/D-GalN 독성유발에 따른 단풍취 열수 추출물의 간기능 개선효과를 연구하였다. 단풍취 열수 추출물 내에 존재하는 5종의 Caffeoylquinic acid (CQA) 분석결과 4,5-di-O-caffeoylquinic acid (4,5-DCQA) 11.16 mg/g, 3,4-di-O-caffeoylquinic acid (3,4-DCQA) 5.23 mg/g, 5-O-caffeoylquinic acid (5-CQA) 4.88 mg/g, 3,5-di-O-caffeoylquinic acid (3,5-DCQA) 3.51 mg/g 및 4-O-caffeoylquinic acid (4-CQA) 3.31 mg/g 순으로 나타났다. 단풍취 열수 추출물이 함유하고 있는 총 폴리페놀 함량은 74.03 mg/g이었으며, ABTS cation radical 소거능은 추출물의 농도 50, 100, 200 및 400 ㎍/mL의 범위에서 각각 12.2, 25.0, 40.8, 68.55%를 나타냈고 DPPH radical 소거능은 50 ㎍/mL의 농도에서 54.38%를 나타냈다. HepG2 세포에 LPS/D-GalN을 처리하여 간독성을 유발한 결과 정상군을 제외한 모든 처리군에서 GGT, AST 및 LDH 활성이 증가하였고, 단풍취 열수 추출물 300 mg/mL을 처리하였을 때 대조군과 비교하여 GGT, AST 및 LDH 활성이 유의적으로 감소하는 것으로 나타났다. LPS/D-GalN을 처리하였을 때 정상군과 비교하여 모든 처리군에서 TNF-α 분비가 유의적으로 증가하는 것을 확인 할 수 있었으며, 단풍취 열수 추출물을 100 ㎍/mL 이상 처리하였을 때 TNF-α의 분비가 유의하게 감소하였다. 이상의 결과로 볼 때 단풍취 열수 추출물은 항산화 활성 증가 및 GGT, AST, LDH의 활성을 감소시키고 TNF-α 분비를 억제시킴으로써 LPS/D-GalN으로 인한 간 손상을 예방하는 것으로 판단된다.

This study investigated the antioxidant and hepatoprotective effects of Ainsliaea acerifolia water extract (AAWE) on HepG2 cells. Five types of caffeoylquinic acid (CQA) were detected in AAWE, namely, 4,5-di-O-caffeoylquinic acid (4,5-DCQA; 11.16 mg/g), 3,4-di-O-caffeoylquinic acid (3,4-DCQA; 5.23 mg/g), 5-O-caffeoylquinic acid (5-CQA; 4.88 mg/g), 3,5-di-O-caffeoylquinic acid (3,5-DCQA; 3.51 mg/g), and 4-O-caffeoylquinic acid (4-CQA; 3.31 mg/g). AAWE exerted ABTS+ antioxidant effects, evidenced by polyphenol content and 2,2'2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) and 2,2-diphenyl-1-picryl-hydrazyl-hydrate (DPPH radical scavenging) activities. AAWE (300 ㎍/mL) treatment significantly decreased the activities of gamma glutamyl transferase (GGT), aspartate transaminase (AST), and lactate dehydrogenase (LDH) as compared to control and exerted protective effects against the increase in liver function index induced by lipopolysaccharide (LPS)/galactosamine (D-GalN) in HepG2 cells. In addition, the secretion of tumor necrosis factor (TNF)-α by HepG2 cells induced by LPS/D-GalN significantly increased in all treatment groups compared to that in the control. However, AAWE (100-300 ㎍/mL) treatment significantly decreased the secretion of TNF-α compared to that in the control. These results suggest that AAWE treatment reduces hepatotoxicity by increasing antioxidant activities, reducing GGT, AST, and LDH activities, and inhibiting TNF-α secretion.

키워드

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