• Phytother Res · Feb 2010

    Growth inhibition and cell cycle arrest in the G0/G1 by schizandrin, a dibenzocyclooctadiene lignan isolated from Schisandra chinensis, on T47D human breast cancer cells.

    • Sun-Jack Kim, Hye-Young Min, Eun Jin Lee, Yeong Shik Kim, KiHwan Bae, Sam Sik Kang, and Sang Kook Lee.
    • College of Pharmacy and Division of Life and Pharmaceutical Sciences, Ewha Womans University, Seoul, Korea.
    • Phytother Res. 2010 Feb 1; 24 (2): 193-7.

    AbstractSchizandrin is one of the main dibenzocyclooctadiene lignans present in the fruit of Schisandra chinensis (Schisandraceae). Biological activities including hepatoprotective, antiviral and neuroprotective effects of schizandrin and other dibenzocyclooctadiene lignans have been reported previously. However, the antiproliferative effect of schizandrin against human cancer cells has been poorly determined to date. This study examined the antiproliferative effect of schizandrin in human breast cancer cells. Schizandrin exhibited growth inhibitory activities in cultured human breast cancer cells, and the effect was the more profound in estrogen receptor (ER)-positive T47D cells than in ER-negative MDA-MB-231 cells. When treated with the compound in T47D cells, schizandrin induced the accumulation of a cell population in the G0/G1 phase, which was further demonstrated by the induction of CDK inhibitors p21 and p27 and the inhibition of the expression of cell cycle checkpoint proteins including cyclin D1, cyclin A, CDK2 and CDK4. These results suggest that schizandrin inhibits cell proliferation through the induction of cell cycle arrest with modulating cell cycle-related proteins in human breast cancer cells.(c) 2009 John Wiley & Sons, Ltd.

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