Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Anti-cancer Effects of Cultivated Orostachys japonicus on Human Colon Cancer Cell Line SW480

인체대장암세포주 SW480에 대한 재배 와송의 항암효과 연구

  • Park, Sookyoung (Department of Physical Therapy, College of Healthcare Medical Science & Engineering, Inje University) ;
  • Won, Jinyoung (Biohealth Products Research Center (BPRC), Inje University) ;
  • Park, Kanghui (Department of Physical Therapy, Dong Ju College) ;
  • Hong, Yonggeun (Department of Physical Therapy, College of Healthcare Medical Science & Engineering, Inje University)
  • 박수경 (인제대학교 보건의료융합대학 물리치료학과) ;
  • 원진영 (인제대학교 u-항노화헬스케어연구소(u-HARC)) ;
  • 박강희 (동주대학교 물리치료과) ;
  • 홍용근 (인제대학교 보건의료융합대학 물리치료학과)
  • Received : 2018.02.01
  • Accepted : 2018.04.27
  • Published : 2018.07.30
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Abstract

Orostachys japonicus (OJ) is a medicinal herb with immunoregulatory, anti-aging, anti-oxidative, and many other therapeutic properties. The purpose of this study was to elucidate the anti-cancer property of cultivated OJ. SW480 cell viability was significantly reduced by cumulative exposure to OJ extract. We also observed inhibitory effects of OJ after 72 hr through the growth and migration of SW480 cells using scratch assay. SW480 cells in OJ-free medium began to move into the scratch site at 24 hr; however, cells in medium containing OJ did not migrate into the scratch site until 48 hr. Male C57BL/6 mice (4 weeks old) were orally administered OJ extract for 31 days before injection of SW480 cells. At 7, 14, and 28 days after subcutaneous injection of SW480 cells, tumor weight and volume were analyzed. The body weight of the OJ-treated group was continuously increased during administration of the OJ extract relative to the control group. Injection of SW480 cells caused a reduction in body weight in all groups; however, the OJ-treated group exhibited a significant increase in body weight after 14 days. Tumor weight and volume were lower in the OJ-treated group than in the control group after 28 days. Although these results suggest that OJ suppresses the proliferation and migration of human colon cancer cells, additional studies are required to provide preclinical evidence before launching clinical trials evaluating OJ as an anti-cancer biohealth product.

와송(둥근바위솔, Orostachys japonicus, OJ)은 면역조절, 항노화, 항산화, 독성제거 등의 치료적 효과를 가진 약용식물로 알려져 있는데, 본 연구에서는 인체대장암세포에 대한 재배 와송의 항암효과를 규명하고자 하였다. 인체대장암세포주 SW480에 와송열수추출물을 72시간 동안 처리한 결과, 대장암세포의 생존율은 농도-의존적으로 유의하게 감소하였다. 또한, 와송은 SW480 세포의 증식과 이주를 억제하는 것으로 나타났는데, 대조군의 스크래치 gap은 24시간부터 유의하게 감소하는 반면, 와송열수추출물을 처리한 실험군 I과 II의 스크래치 gap은 48시간부터 감소하기 시작하였다. 특히 실험군 I의 스크래치 gap은 72시간까지 유의하게 유지되었다. 와송이 생체 내에서 종양의 형성에 어떠한 영향을 미치는지 알아보기 위하여 대장암세포 주사 전, 31일 동안 수컷 C57BL/6 마우스(4주령)에게 와송열수추출물을 경구로 자유 섭취하게 하였다. 이후 SW480 세포($1{\times}10^7cells/100{\mu}l$)를 피하로 주입한 후 7일, 14일 그리고 28일에서 종양의 형성을 관찰하였고, 각 실험동물을 희생하여 종양의 무게와 부피($mm^3$)를 측정하여 비교 분석하였다. 와송열수추출물을 섭취하는 동안 실험군 I, II의 체중은 대조군에 비해 지속적으로 유의하게 증가하였다. SW480 세포 주입 이후 모든 실험군의 체중은 감소하였으나, 세포 주입 후 14일부터 와송 섭취 실험군의 체중은 유의하게 증가하는 것으로 나타났다. 대장암세포 주입 후 7일과 14일에서 와송을 섭취한 실험군의 종양 무게와 부피는 대조군보다 높았으나, 28일에서는 대조군보다 낮게 나타났고, 특히 실험군 II에서 종양 무게와 부피는 유의하게 감소하는 것으로 확인되었다. 이상의 결과를 통해 와송이 인체 대장암세포의 성장, 증식 및 이주를 억제하며, 생체 내 종양형성(tumorigenesis)을 예방적으로 억제함을 알 수 있었다. 따라서, 재배 와송은 천연 항암제 소재로서 활용될 가능성을 가지는 것으로 보이며, 이에 대한 심층적인 연구가 필요할 것으로 사료된다.

Keywords

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