Journal of Food Hygiene and Safety (한국식품위생안전성학회지)

The Korean Society of Food Hygiene and Safety (한국식품위생안전성학회)
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Betulinic Acid, a Naturally Occurring Triterpene found in the Bark of the White Birch Tree induces Apoptotic Cell Death in KB Cervical Cancer Cells through Specificity Protein 1 and its Downstream

  • Shin, Ji-Ae (Department of Oral Pathology, School of Dentistry, Institute of Oral Bioscience, Brain Korea 21, Chonbuk National University) ;
  • Choi, Eun-Sun (Department of Oral Pathology, School of Dentistry, Institute of Oral Bioscience, Brain Korea 21, Chonbuk National University) ;
  • Jung, Ji-Youn (Department of Companion and Laboratory Animal Science, Kongju National University) ;
  • Cho, Nam-Pyo (Department of Oral Pathology, School of Dentistry, Institute of Oral Bioscience, Brain Korea 21, Chonbuk National University) ;
  • Cho, Sung-Doe (Department of Oral Pathology, School of Dentistry, Institute of Oral Bioscience, Brain Korea 21, Chonbuk National University)
  • Received : 2011.04.07
  • Accepted : 2011.05.18
  • Published : 2011.06.30
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Abstract

Betulinic acid (BA), a naturally occurring triterpene found in the bark of the white birch tree, has been investigated to induce apoptosis in various cancer cells and animal models. However, there is no report of the chemopreventive effect of BA in cervical cancer cells. Using KB human cervical cancer cells as a model, we currently show that BA decreases cell viability and induces apoptotic cell death. The mechanism of the BA-induced anti-growth response in KB cells is due to the down-regulation of specificity protein 1 (Sp 1) and its downstream targets, myeloid cell leukemia-1(Mcl-1) and survivin. Thus, BA acts as a novel chemopreventive agent through the regulation of Sp1 that is highly expressed in tumors.

흰자작나무의 껍질에서 발견된 자연적으로 발생한 triterpene 인 betulinic acid (BA)가 다양한 종류의 암세포와 동물 모델에서 세포사멸을 유도하는 것으로 알려져 있다. 하지만 자궁경부암세포에서 BA의 화학적 암예방 효과는 연구되지 않은 상태이다. 따라서 이 연구에서는 사람 자궁경부암세포주인 KB세포를 이용하여, BA가 세포증식을 감소시키고 세포사멸을 유도하는 것을 확인하였다. KB 세포에서 BA에 의해 유도되는 세포증식의 억제는 specificity protein 1 (Sp1)과 Sp1의 표적단백질인 myeloid cell leukemia-1 (Mcl-1) 그리고 survivin의 감소 때문인 것으로 확인되었다. 따라서 BA는 자궁경부암에서 과다 발현되는 Sp1을 조절하는 새로운 화학적 암예방 물질로서 작용할 수 있을 것으로 생각된다.

Keywords

References

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