Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Effects of Lycopene on Endothelial Protein C Receptor Shedding In Vitro and In Vivo

In vitro와 in vivo에서 라이코펜이 EPCR 탈락에 미치는 영향

  • Yoo, Hayoung (College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University) ;
  • Lee, Hyun-Shik (School of Life Sciences, College of Natural Sciences, Kyungpook National University) ;
  • Lee, Wonhwa (College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University) ;
  • Bae, Jong-Sup (College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University)
  • 유하영 (경북대학교 약학대학 약학연구소) ;
  • 이현식 (경북대학교 자연과학대학 생명공학부) ;
  • 이원화 (경북대학교 약학대학 약학연구소) ;
  • 배종섭 (경북대학교 약학대학 약학연구소)
  • Received : 2013.04.26
  • Accepted : 2013.05.22
  • Published : 2013.05.30
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Abstract

Endothelial protein C receptor (EPCR) plays a pivotal role in augmenting Protein C activation through the thrombin-thrombomodulin complex. EPCR activity is markedly changed by ectodomain cleavage and released as the soluble protein (sEPCR). EPCR shedding is mediated by tumor necrosis factor-${\alpha}$ converting enzyme (TACE). Lycopene found in tomatoes and tomato products has anti-oxidant, anti- cancer and anti-inflammatory effects. However, little is known about the effects of lycopene on EPCR shedding. We investigated this issue by monitoring the effects of lycopene on the phorbol-12-myristate 13-acetate (PMA), tumor necrosis factor (TNF)-${\alpha}$, interleukin (IL)-$1{\beta}$ and on the cecal ligation and puncture (CLP)-mediated EPCR shedding. Data showed that lycopene potently inhibited the PMA, TNF-${\alpha}$, IL-$1{\beta}$ and CLP-induced EPCR shedding by suppressing TACE expression. Furthermore, lycopene reduced PMA-stimulated phosphorylation of p38, extracellular regulated kinases (ERK) 1/2 and c-Jun N-terminal kinase (JNK). Given these results, lycopene should be viewed as a candidate therapeutic agent for the treatment of various severe vascular inflammatory diseases via inhibition of the EPCR shedding.

내피세포 단백질 C 수용체(EPCR)가 트롬빈-트롬보모듈린 복합체에 의한 단백질 C (PC) 활성 증가에 중요한 역할을 한다. EPCR의 활성은 ecodomain의 분열과 수용성 단백질(sEPCR)로 분비함으로써 현저하게 변화한다. EPCR의 탈락은 tumor necrosis factor-${\alpha}$ converting enzyme (TACE)에 의해 매개된다. 토마토에서 발견된 라이코펜은 항산화 효과, 항암 효과, 항염증 효과를 가지고 있다. 그러나 EPCR 탈락에서의 라이코펜의 효과는 알려지지 않았다. 우리는 라이코펜이 PMA, TNF-${\alpha}$, IL-$1{\beta}$와 CLP에 의해 유도된 EPCR 탈락에 미치는 영향을 연구했다. 그 결과, 라이코펜은 TACE의 발현을 억제시켜 PMA, TNF-${\alpha}$, IL-$1{\beta}$와 CLP에 의해 매개된 EPCR 탈락을 저해함을 보여준다. 또한 라이코펜은 PMA가 유발한 p38, ERK1/2, JNK의 인산화를 감소시켰다. 이러한 결과를 토대로, 라이코펜은 EPCR 탈락의 저해를 통해 다양한 중증 혈관 염증 질병 치료를 위한 후보 물질이 될 수 있을 것이다.

Keywords

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