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KMID : 1123920080220051250
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Korean Journal of Oriental Physiology and Pathology
2008 Volume.22 No. 5 p.1250 ~ p.1255
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Change of Ratio of Onchungeum Composition Induces Different G1 Arrest Mechanisms in Hep3B Cells
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Goo In-Mo
Kim Gil-Whon
Shin Heung-Mook
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Abstract
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Onchungeum(OCE), a herbal formula, has been used for treatment of anemia, discharging blood and skin diseases. In the previous study, we investigated the anti-cancer effect of OCE by G1 arrest of the cell cycle in human hepatocarcinoma cells, Hep3B cells. In this study, it was examined that the difference of anti-proliferative mechanisms by change in the ratio of OCE composition (OCE I) in Hep3B cells. Treatment of OCE I exhibited a relatively strong anti-proliferative activity and caused various morphological changes such as membrane shrinkage and cell floating. In addition, OCE-I arrests the cell cycle at G1 phase, which was associated with the down-regulation of cyclin D1 and Cdk6 expressions. The G1 arrest was also associated with the induction of Cdk inhibitors p27 and p21. Moreover, both p21 and p27 were detected by immunoprecipitation with anti-Cdk4 and anti-Cdk2 antibodies in OCE I-treated cells but in case of OCE, p21 did not make any complexes with Cdk4 and Cdk2. These results suggest that the change in the ratio of OCE composition might induce different mechanisms in anti-cancer efficacy of OCE, which may confer characteristic principles in oriental medical formula.
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KEYWORD
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OCE I, Hep3B cells, G1 arrest, p21, p27, characteristic principles in oriental medical formula
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