Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Sulforaphane-Induced Apoptosis was Regulated by p53 and Caspase-3 Dependent Pathway in Human Chondrosarcoma, HTB-94

Sulforaphane에 의한 p53 및 caspase-3 의존 신호전달계를 통한 인간 연골암 세포주 HTB-94에서의 세포사멸 기전 연구

  • Lee, Won-Kil (Department of Biological Sciences, College of Natural Sciences, Kongju National University) ;
  • Kim, Song-Ja (Department of Biological Sciences, College of Natural Sciences, Kongju National University)
  • 이원길 (공주대학교 자연과학대학 생명과학과) ;
  • 김송자 (공주대학교 자연과학대학 생명과학과)
  • Received : 2011.04.01
  • Accepted : 2011.05.26
  • Published : 2011.06.30
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Abstract

Sulforaphane (SFN) is an isothiocyanate, isolated from glucoraphanin in broccoli and other cruciferaous vegetables. Recent studies have revealed that SFN induces anti-proliferation and apoptosis by cell cycle arrest in various cancer cells. In this study, we investigated the effect of SFN induced apoptosis in chondrosarcoma HTB-94 cells. SFN caused suppression of proliferation and apoptosis in a dose-dependent manner as determined by cell phenotype, MTT assay and FACS analysis in HTB-94 cells. Treatment of SFN led to caspase-3 activation and p53 accumulation as determined by Western blot analysis. Also, SFN significantly induced DNA fragmentation and nuclear degradation though activation of caspase-3, as detected by DNA electrophoresis and immunostaining, respectively. Our results indicate that SFN-induced apoptosis was regulated by p53 and caspase-3 dependent pathways. Furthermore, SFN may act as a potent anti-proliferation agent, and as a promising candidate for molecular-targeting chemotherapy against human chondrosarcoma cells.

Sulforaphane (SFN)은 브로콜리와 다른 십자화과 채소로부터 분리해 낸 이소시아네이트 구조를 갖는 물질이다. 최근 연구에서는 다양한 암세포에서 SFN이 세포주기를 억제하여 증식저해와 세포사멸을 유도한다고 알려져 있다. 본 연구에서는 연골암 세포주 HTB 94를 이용하여 연골암세포에서의 SFN의 세포사멸 분자적 기전을 연구하였다. SFN은 처리농도 의존적으로 연골암세포의 증식억제와 세포사멸을 유도하는 것을 세포형태변화 및 핵염색, MTT 실험을 통하여 확인하였다. Apoptotic 세포는 DNA 단편전기영동 분석을 통한 분절 DNA 확인 및 유세포분석기를 이용한 subG1 구간의 세포분석을 이용하여 확인하였다. 연골암세포주 HTB-94에 SFN 처리 시 p53 단백질의 발현증가 및 pro-caspase-3의 분해를 통한 caspase-3의 활성을 증가를 Western blot analysis를 통하여 확인하였다. 본 연구결과를 종합해 볼 때, 연골암세포주 HTB-94에 SFN을 처리시 유도되어지는 세포사멸은 p53과 caspase-3 의존적인 신호조절경로를 통하여 조절되는 것을 확인하였다. 본 연구결과는 SFN의 증식억제 효과 및 연골암세포 세포사멸 유도기전을 이용하여 향후 연골암세포의 치료약제 개발에 도움이 될 것으로 기대한다.

Keywords

References

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