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Anti-colorectal Cancer and Anti-oxidant Activities of Rubiae radix Ethanol Extract in vitro

천초근 에탄올 추출물의 항산화 효능 및 대장암 세포 억제 효과

  • Nho, Jong Hyun (National Development Institute of Korean Medicine) ;
  • Sim, Mi Ok (National Development Institute of Korean Medicine) ;
  • Jung, Ho Kyung (National Development Institute of Korean Medicine) ;
  • Lee, Mu Jin (National Development Institute of Korean Medicine) ;
  • Jang, Ji Hun (National Development Institute of Korean Medicine) ;
  • Jung, Da Eun (National Development Institute of Korean Medicine) ;
  • Sung, Tae Kyoung (National Development Institute of Korean Medicine) ;
  • An, Byeong Kwan (National Development Institute of Korean Medicine) ;
  • Cho, Hyun Woo (National Development Institute of Korean Medicine)
  • Received : 2017.09.22
  • Accepted : 2018.01.19
  • Published : 2018.04.30

Abstract

Rubiae radix is root of Runia akane Nakai, it has been used to hemostasis and blood stasis in Korean and China. This study investigated that anti-oxidant and anti-colorectal cancer effect of ERA (ethanol extract of Rubiae radix) and WRA (water extract of Rubiae radix) using RAW 264.7 (murine macrophage from blood) and HCT-116 cells (human colorectal cancer cell line). ERA contained polyphenol ($45.77{\pm}2.03mg/g$) and flavonoid ($22.82{\pm}1.33mg/g$). $500{\mu}M$ $H_2O_2$-induced ROS generation was diminished by $500{\mu}g/m{\ell}$ ERA treatment in RAW 264.7 cells, but not WRA (125, 250, and $500{\mu}g/m{\ell}$). Moreover, caspase-3 activity and DNA fragmentation increased by $500{\mu}g/m{\ell}$ ERA treatment during apoptotic cell death in HCT-116. Results demonstrated that anti-cancer effect of ERA against human colorectal cancer cells is mediated apoptotic cell death and DNA fragmentation through caspase-3 activation. However, further study is required to what active ingredient of ERA are important for anti-oxidant and anti-colorectal cancer effect in vivo.

본 연구는 꼭두서니의 뿌리인 천초근의 물 추출물과 에탄올 추출물을 이용하여 대장암 세포에 대한 암세포 성장 억제 및 사멸효과가 있는지 알아보고자 수행하였다. ERA(천초근 에탄올 추출물)은 폴리페놀($45.77{\pm}2.03mg/g$)과 플라보노이드($22.82{\pm}1.33mg/g$)를 함유하고 있었으며, $H_2O_2$에 의해 증가된 ROS(reactive oxygen species)를 억제하는 효과를 나타냈지만 WRA(천초근 물 추출물)은 효과가 없었다. 또한 ERA는 $500{\mu}g/m{\ell}$의 농도로 대장암 세포주(HCT-116)에 처리했을 때 세포사멸을 유도할 뿐만 아니라 caspase-3 단백질 활성화, DNA fragmentation 및 apoptotic cell death를 일으키는 것으로 확인되었다. 이는 ERA가 HCT-116 세포주에 대해 apoptosis(세포자멸사)를 통해 항암효과를 나타내는 것으로 생각되지만 다른 연구결과들과 비교하였을 때 농도 대비 효능이 미미하다. 따라서 천초근 에탄올 추출물에 대장암 세포의 성장을 억제하는 유효성분을 분석하여 그 효능을 탐색하는 추가실험이 필요할 것으로 생각된다.

Keywords

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