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The Efficacy of Saururus chinensis on Cervical Cancer Cells : The Inhibitory Effect on the Function of E6 and E7 Oncogenes of HPV Type 16  

Chung, Yeon-Gu (Laboratory of cell Biology Laboratory, Korea Research Institute of Bioscience and Biotechnology)
Lee, Hae-Sook (Laboratory of cell Biology Laboratory, Korea Research Institute of Bioscience and Biotechnology)
Lee, Kyung-Ae (Laboratory of cell Biology Laboratory, Korea Research Institute of Bioscience and Biotechnology)
Joung, Ok (Laboratory of cell Biology Laboratory, Korea Research Institute of Bioscience and Biotechnology)
Oh, Won-Keun (Laboratory of cell Biology Laboratory, Korea Research Institute of Bioscience and Biotechnology)
Kim, Kwang-Dong (Laboratory of cell Biology Laboratory, Korea Research Institute of Bioscience and Biotechnology)
Lim, Jong-Seok (Laboratory of cell Biology Laboratory, Korea Research Institute of Bioscience and Biotechnology)
Moon, Ja-Young (Department of Biochem. and Health Science, Changwon National University)
Cho, Yong-Kweon (Department of Biochem. and Health Science, Changwon National University)
Park, Sue-Nie (Department of Viral products, Korea Food and Drug Administration)
Yoon, Do-Young (Laboratory of cell Biology Laboratory, Korea Research Institute of Bioscience and Biotechnology)
Publication Information
YAKHAK HOEJI / v.46, no.6, 2002 , pp. 426-432 More about this Journal
Abstract
Cervical cancer is one of the leading causes of female death from cancer worldwide with about 500,000 deaths per year. A strong association between certain human papilloma viruses (HPV type 16 and 18) and cervical cancer has been well known. An extract of Saururus chinensis, named as PE-46, has been used to investigate whether this agent has the ability of inhibiting the oncogenes E6 and E7 of HPV type 16. PE-46 inhibited the proliferation of human cervical cancer cell lines in a dose response manner. PE-46 also inhibited the in vitro binding of E6 and E6AP which are essential for the binding and degradation of the tumor suppressor p53. In addition, PE-46 inhibited the in vitro binding of E7 and Rb which is essential tumor suppressor for the control of cell cycle. The levels of mRNA for E6 and E7 were also decreased by PE-46. SiHa cells treated with PE-46 induced G0/G1 arrest, resulting in inhibition of growth. Our study showed that the PE-46 can inhibit the cervical carcinomas via both inhibition of bindings between oncogenes and tumor suppressors, and inhibition of G1longrightarrowS transition. PE-46 inhibited the oncogenecity of E6 and E7 of HPV 16 type, thus could be used as a putative modulating agent for the treatment of cervical carcinomas caused by HPV.
Keywords
Saururus Chinensis; Enzyme-linked immunosorbent assay (ELISA); E6 and E7 oncogene;
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