原花青素对前列腺癌LNCaP细胞增殖和凋亡的影响

目的 研究原花青素对人雄激素依赖性前列腺癌细胞株LNCaP细胞增殖和凋亡的影响.方法 体外培养的LNCaP细胞株与100、200、300 μg/ml的原花青素共孵育,分别在24、48和72 h时观察细胞形态学变化,MTT检测细胞增殖抑制率,流式细胞术分析细胞凋亡情况.结果 原花青素可引起LNCaP细胞形态较明显改变.不同浓度(100、200、300 μg/ml)原花青素对LNCaP细胞作用的细胞增殖抑制率分别为27.1%、72.1%和86.4%.流式细胞术检测表明原花青素可诱导LNCaP细胞凋亡,300μg/ml原花青素处理72 h引起36.5%的凋亡率.这3种作用均随原花青素浓度和作用时间的延长而增强.结论 原花青素可在体外抑制前列腺癌LNCaP细胞增殖,并促进其凋亡.

Procyanidins inhibit proliferation and promote apoptosis of the prostate cancer cell line LNCaP

OBJECTIVE: To investigate the effects of procyanidins on proliferation and apoptosis of a hormone-dependent prostate cancer cell line LNCaP in vitro. METHODS: LNCaP cells were cultured in the presence of procyanidin (at 100, 200 and 300 microg/ml, respectively). After 24, 48 and 72 h of culture, the morphological changes of LNCaP cells were examined, and the inhibition of cell proliferation was measured by MTT assay and cell apoptosis evaluated by flow cytometry. RESULTS: After procyanidins treatment, some LNCaP cells presented characteristic morphological changes. Procyanidins inhibited the growth of LNCaP cells in a concentration- and time-dependent manner. Flow cytometry analysis showed that procyanidins induced apoptosis of LNCaP cells and the percentage of apoptotic cells increased with the concentration of procyanidins administered and also the elongation of treatment time. CONCLUSION: Procyanidins inhibit the proliferation and promote the apoptosis of prostate cancer cells.