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Abstract Title:

Anti-cancer effects of deguelin on human leukemia K562 and K562/ADM cells In Vitro.

Abstract Source:

J Huazhong Univ Sci Technolog Med Sci. 2007 Apr ;27(2):149-52. PMID: 17497282

Abstract Author(s):

Qiuling Wu, Yan Chen, Hongli Liu, Jing He

Article Affiliation:

Qiuling Wu

Abstract:

In order to investigate the anti-cancer effects of deguelin and on K562 and K562/ADM cells in vitro and the underlying molecular mechanism and compare the cytotoxicity of deguelin on K562, K562/ADM cells and human peripheral blood mononuclear cells (PBMCs). The effects of deguelin on cell proliferation were assessed by MTT assay. Apoptosis were detected by Annexin V/PI double-labeled cytometry. The effects of deguelin on the cell cycle were studied by a propidium iodide method. Our study showed that deguelin inhibited the proliferation of K562 cell and K562/ADM cell in a time- and dose-dependent manner and had minimal effects on normal human peripheral blood mononuclear cells. The ratio of IC(50) value of deguelin of 24 h on K562/ADM cells to K562 cells was only 1.27, which was significantly lower than the ratio of IC(50) value of ADM (higher than 20). Deguelin could induce apoptosis of K562 cells and K562/ADM cells. K562 cells were arrested at G(2)/M phase while K562/ADM cells were arrested at G(0)/G(1) phase. Our results suggested that deguelin was a novel anti-leukemia agents with high efficacy and low toxicity and it is also a promising agent for reversing drug resistance.

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