摘要
目的：探讨防风提取物联合三氧化二砷（arsenic trioxide, ATO）对人慢性粒细胞白血病K562细胞增殖和凋亡的影响。方法制备防风提取物，以不同浓度的防风提取物或ATO处理培养的K562细胞48 h，应用四甲基偶氮唑蓝（MTT）法检测细胞增殖，应用流式细胞术（flow cytometry, FCM）检测细胞凋亡和细胞周期。结果MTT检测显示，与对照组比较，防风提取物750、1000、1250、1500μg/ml组细胞增殖抑制率[分别为（23.29±3.31）%、（48.30±2.50）%、（79.62±3.41）%、（88.94±0.06）%]升高（P均＜0.05）；防风提取物联合ATO 1.0、0.5μg/ml组增殖抑制率较ATO 1.0、ATO0.5μg/ml组[（64.99±5.18）%比（44.48±3.31）%、（38.59±3.88）%比（26.30±5.03）%]显著升高（P 均＜0.05）。流式细胞检测结果显示，防风提取物联合ATO 2.0、1.0、0.5μg/ml组K562细胞凋亡率较ATO 2.0、1.0、0.5μg/ml组[（33.97±0.59）%比（20.97±2.17）%、（13.53±0.47）%比（9.77±0.64）%、（6.63±0.40）%比（4.00±0.46）%]升高（P均＜0.05）；细胞周期结果显示，防风提取物联合ATO 2.0、1.0、0.5μg/ml组细胞S期细胞比例[（60.25±2.59）%比（55.61±1.28）%、（60.89±1.53）%比（37.96±1.02）%、（47.76±0.87）%比（39.90±0.92）%]明显增加（P均＜0.05）。结论防风提取物对K562细胞具有增殖抑制作用；防风提取物可明显增强ATO对K562细胞的增殖抑制和诱导凋亡作用。ATO可使K562细胞阻滞于G2/M期，而防风提取物与ATO联合应用则使K562细胞阻滞于S期。
ObjectiveTo investigate the effects of Saposhnikovia divaricata extract combined with arsenic trioxide （ATO） on the proliferation and apoptosis in chronic myelogenous leukemia K562 cells. MethodsSaposhnikovia divaricata extract was prepared.Cultured K562 cells were treated with different concentration of Saposhnikovia divaricataextract or/and ATO for 48h. Cell proliferation was determined using the MTT assay. Apoptosis and cell cycle were detected using flow cytometry.ResultsThe MTT assay showed that Saposhnikovia divaricata extract of 750,1 000,1 250,1 500 μg/ml had a significantly proliferation inhibitory effect compared with control group, the inhibitory rates were 23.29% ± 3.31%, 48.30% ± 2.50%, 79.62% ± 3.41% and 88.94% ± 0.06%, respectively （allP〈0.05）; Saposhnikovia divaricata extract of 500 μg/ml combined with ATO of 1.0, 0.5 μg/ml significantly increased inhibitor rates compared with ATO of 1.0, 0.5 μg/ml （64.99% ± 5.18%vs. 44.48% ± 3.31%,38.59% ± 3.88%vs.26.30% ± 5.03%; allP〈0.05）. FCM showed that Saposhnikovia divaricata extract of 500 μg/ml combined with ATO of 2.0, 1.0, 0.5 μg/ml significantly increased apoptotic rate compared with ATO group of 2.0, 1.0, 0.5 μg/ml （33.97% ± 0.59%vs.20.97% ± 2.17%, 13.53% ± 0.47%vs.9.77%±0.64%、6.63%±＆amp;0.40%vs.4.00%±0.46%; allP〈0.05 ）. Cell cycle results showed that Saposhnikovia divaricata extract of 500μg/ml combined with ATO of 2.0,1.0, 0.5μg/ml significantly increased the rate of S phase compared with ATO group of 2.0, 1.0, 0.5 μg/ml （60.25 ± 2.59%vs.55.61 ± 1.28%, 60.89 ± 1.53%vs.37.96 ± 1.02%, 47.76 ± 0.87%vs.39.90 ± 0.92%; allP〈0.05）.ConclusionsSaposhnikovia divaricataextract could obviously inhibit the proliferation of K562 cells and enhance the apoptotic effect of ATO. ATO could induce a G2/M phase arrest, while Saposhnikovia divaricata extract combined with ATO could induce a S phase arrest in K562 cells.
出处
《国际中医中药杂志》
2015年第6期524-528,共5页
International Journal of Traditional Chinese Medicine
关键词
K562细胞
防风
植物提取物
砷剂
细胞增殖
细胞凋亡
K562 cells
Saposhnikovia divaricata
Arsenicals
Plant extracts
Cell proliferation
Apoptosis
