Anthocyanin Induces Apoptosis of DU-145 Cells In Vitro and Inhibits Xenograft Growth of Prostate Cancer

来自 EBSCO

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作者：

U Ha，W Bae，S Kim，B Yoon，S Hong，J Lee，T Hwang，S Hwang，Z Wang，S Kim

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摘要：

To investigate the effects of anthocyanins extracted from black soybean, which have antioxidant activity, on apoptosisin vitro(in hormone refractory prostate cancer cells) and on tumor growthin vivo(in athymic nude mouse xenograft model). The growth and viability of DU-145 cells treated with anthocyanins were assessed using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and apoptosis was assessed by DNA laddering. Immunoblotting was conducted to evaluate differences in the expressions of p53, Bax, Bcl, androgen receptor (AR), and prostate specific antigen (PSA). To study the inhibitory effects of anthocyanins on tumor growthin vivo, DU-145 tumor xenografts were established in athymic nude mice. The anthocyanin group was treated with daily oral anthocyanin (8 mg/kg) for 14 weeks. After 2 weeks of treatment, DU-145 cells (2×106) were inoculated subcutaneously into the right flank to establish tumor xenografts. Tumor dimensions were measured twice a week using calipers and volumes were calculated. Anthocyanin treatment of DU-145 cells resulted in 1) significant increase in apoptosis in a dose-dependent manner, 2) significant decrease in p53 and Bcl-2 expressions (with increased Bax expression), and 3) significant decrease in PSA and AR expressions. In the xenograft model, anthocyanin treatment significantly inhibit tumor growth. This study suggests that anthocyanins from black soybean inhibit the progression of prostate cancerin vitroand in a xenograft model.

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关键词：

Prostatic neoplasms anthocyanins apoptosis

DOI：

10.3349/ymj.2015.56.1.16

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年份：

2015