云芝多糖对小鼠黑色素瘤B16细胞体外增殖和凋亡的影响及其机制
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篇名: 云芝多糖对小鼠黑色素瘤B16细胞体外增殖和凋亡的影响及其机制
TITLE:
摘要: 目的:研究云芝多糖(CVP) 对小鼠黑色素瘤B16细胞体外增殖、凋亡的影响及其机制。方法:采用MTT法测定以二甲基亚砜(DMSO,阴性对照)和0(空白对照)、0.156、0.312 5、0.625、1.25、2.5、5.0、10.0 μg/ml CVP分别培养细胞48、72 h后的细胞存活率,计算半数抑制浓度(IC50);流式细胞术测定以DMSO(阴性对照)和0(空白对照)、0.5 μg/ml CVP 分别培养细胞24、48、72 h后的细胞凋亡率;实时荧光定量聚合酶链式反应法测定以DMSO(阴性对照)、0.5 μg/ml CVP培养细胞48、72 h后细胞中凋亡相关基因P53、Bcl-2、Fas mRNA的表达。结果:0.156~10.0 μg/ml CVP 对B16细胞的生长均有抑制作用,并在0.156~0.625 μg/ml范围内呈浓度和时间依赖性,培养48、72 h的IC50分别为(0.32±0.01)、(0.18±0.04) μg/ml。0.5 μg/ml CVP培养细胞24、48、72 h后,细胞凋亡率较阴性对照和空白对照均明显升高(P<0.01);0.5 μg/ml CVP培养细胞48、72 h后,细胞中P53、Bcl-2、Fas mRNA表达水平较阴性对照明显降低(P<0.01)。结论:CVP可抑制小鼠B16细胞的增殖并诱导其凋亡,其机制可能与下调细胞中P53、Bcl-2和Fas基因的表达有关。
ABSTRACT: OBJECTIVE: To study the effects of Coriolus versicolor polysaccharides (CVP) on in vitro proliferation and apoptosis of murine melanoma B16 cell and its mechanism. METHODS: MTT assay was used to determine the survival rate of murine melanoma B16 cell after cultured with DMSO (negative control), 0 (blank control), 0.156, 0.312 5, 0.625, 1.25, 2.5, 5.0 and 10.0 μg/ml CVP for 48, 72 h, and the IC50 was calculated. Flow cytometry was used to determine the apoptotic rate of murine melanoma B16 cell after cultured with DMSO (negative control), 0 (blank control), 0.5 μg/ml CVP for 24, 48, 72 h. Quantitation Real-time PCR (qRT-PCR) was used to determine the mRNA expression of cell apoptosis-related gene P53, Bcl-2 and Fas in murine melanoma B16 cell after cultured with DMSO (negative control), 0.5 μg/ml CVP for 48, 72 h. RESULTS: 0.156-10.0 μg/ml CVP could inhibit the growth of B16 cells, in concentration and time-dependent manner within 0.156-0.625 μg/ml; IC50 of B16 cells after cultured for 48 and 72 h were (0.32±0.01),(0.18±0.04) μg/ml. After cultured with 0.5 μg/ml CVP for 24, 48, 72 h, apoptotic rates of B16 cells were increased significantly, compared to negative control and blank control (P<0.01). After cultured with 0.5 μg/ml CVP for 48, 72 h, mRNA expression of P53, Bcl-2 and Fas were decreased significantly, compared to negative control (P<0.01). CONCLUSIONS: CVP can inhibit the proliferation and induce the apoptosis of B16 cells, the mechanism of which may be associated with the expression down-regulation of P53, Bcl-2 and Fas gene.
期刊: 2016年第27卷第31期
作者: 魏士杰,陈文强
AUTHORS: WEI Shijie,CHEN Wenqiang
关键字: 云芝多糖;黑色素瘤B16细胞;增殖;凋亡;体外
KEYWORDS: Coriolus versicolor polysaccharides; Murine melanoma B16 cell; Proliferation; Apoptosis; in vitro
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