Microbiology and Biotechnology Letters (한국미생물·생명공학회지)

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Analysis of Differentially Expressed Genes by Allicin in Human Colorectal Cancer Cell

마늘성분 Allicin에 의해 차별적으로 발현되는 유전자군의 발현 분석

  • Kim, Kyung-Ho (Devision of immunopharmacology, School of Pharmacy, Sungkyunkwan University) ;
  • Kim, Min-Jung (Department of Biological Sciences, Andong National University) ;
  • Kim, Jong-Sik (Department of Biological Sciences, Andong National University) ;
  • Pyo, Suhk-Neung (Devision of immunopharmacology, School of Pharmacy, Sungkyunkwan University) ;
  • Kim, Byung-Oh (Department of Applied Biology, Kyungpook National University)
  • Received : 2010.09.14
  • Accepted : 2010.10.06
  • Published : 2010.12.28
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Abstract

We investigated anti-cancer and anti-proliferative activity of allicin and analyzed global gene expression changes by allicin treatment in human colorectal HCT116 cells. As a result, allicin decreased cell viabilities in a dose and time-dependent manner and induced apoptosis. Oligo DNA microarray analysis, we found that 7,840 genes were up-regulated more than 2-folds, whereas 10,010 genes were down-regulated more than 2-folds by $50\;{\mu}M$ allicin treatment. To confirm specific gene expressions, we performed RT-PCR. Consistent with the results of DNA microarray analysis, allicin dramatically induced ATF3 and NAG1 gene expression. Interestingly, NAG-1 protein expression was dependent on p53 presence. Taken together, our present results increase the knowledge of the molecular mechanism of anti-cancer and anti-proliferative activity mediated by allciin in human colorectal cancer cell.

본 연구에서는 마늘성분 allicin에 의한 항암 기전 및 화학적 암 예방법의 분자 생물학적 기전을 이해하기 위한 연구의 일환으로, 마늘성분 중의 하나인 allicin이 인체 대장암 세포주 HCT116의 증식에 미치는 영향을 확인하였다. allicin의 처리에 따라 세포사멸이 나타나며 생존율이 감소함을 확인하였다. 또한 oligo DNA microarray 실험을 통하여 allicin에 의해 발현되는 유전자 중 발현양의 차이를 보인 유전자중 2배 이상 up-regulation된 유전자는 7,840개, 2배 이상 down-regulation 된 유전자는 10,010개로 각각 분류 되었다. 이 중, ATF3유전자의 발현을 확인하였고, 또 다른 항암유전자인 NAG-1 유전자의 발현을 RT-PCR로 확인하였다. 그 결과, allicin처리에 의해 항암유전자인 ATF3의 발현과 NAG1 유전자의 발현이 증가함을 확인하였다. 또한 p53 HCT116 세포주를 이용하여 allicin에 의한 NAG1 단백질의 발현을 확인한 결과, allicin은 p53 유전자 의존적으로 NAG-1 단백질을 발현함을 확인하였다. 결론적으로 allicin은 세포주기나 세포사멸에 관련된 많은 유전자들의 발현 변화를 유도함으로써 암세포 성장억제 활성을 갖는 것으로 사료된다.

Keywords

References

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