纳米羟基磷灰石对卵巢癌细胞株的抑制作用研究
2017-05-30韩丽丽张慧慧马慧芳付莉
韩丽丽 张慧慧 马慧芳 付莉
【摘要】目的研究納米羟基磷灰石(nHAP)对卵巢癌细胞株SKOV3生长的影响及其作用机制。方法培养卵巢癌SKOV3细胞,分别计算出nHAP对卵巢癌SKOV3细胞的30%、50%、70%抑制浓度(IC30、IC50、IC70),绘制量效曲线和时效曲线。选用IC50的nHAP作用卵巢癌SKOV3细胞48 h,与无nHAP的对照组卵巢癌SKOV3细胞对比,分别进行透射电镜观察、流式细胞仪检测。结果 nHAP作用48 h后,不同浓度nHAP对卵巢癌SKOV3细胞均表现出抑制作用,nHAP对卵巢癌SKOV3细胞的IC30、IC50、IC70分别为946、2883、6080 mg/L。IC30、IC50、IC70的nHAP作用于卵巢癌SKOV3细胞 48 h期间,抑制率随时间延长而升高,48 h后抑制率增速变缓。形态学观察和定量分析显示IC50的nHAP作用卵巢癌SKOV3细胞48 h可诱导其凋亡,其凋亡率为(4332±1253)%,对照组为(1088±548)%,组间比较差异有统计学意义(P<005),且与对照组比较,IC50的nHAP作用下的卵巢癌SKOV3细胞G0/G1期百分比高、S期细胞百分比低(P均<005)。结论nHAP对卵巢癌细胞株SKOV3的生长具有明显的抑制作用,其机制可能是nHAP作用于卵巢癌SKOV3细胞的S期,诱导肿瘤细胞凋亡。
【关键词】纳米羟基磷灰石;卵巢癌;细胞株
Effect of nanoscale hydroxyapatite on ovarian cancer cell lineHan Lili, Zhang Huihui, Ma Huifang, Fu Li Department of Obstetrics and Gynecology, the Second Hospital of Jilin University, Changchun 130041, China
Corresponding author, Fu Li, Email:doctorfuli@sinacom
【Abstract】ObjectiveTo investigate the effect and mechanism of nanoscale hydroxyapatite (nHAP) upon the growth of ovarian cancer cell line SKOV3 MethodsThe ovarian cancer cell line SKOV3 was cultured The 30%, 50% and 70%inhibitory concentrations (IC30, IC50 and IC70) of nHAP upon the ovarian cancer cell line SKOV3 were calculated, and the doseeffect and timeeffect curves were delineated The SKOV3 cells treated with IC50 of nHAP and those untreated with nHAP were prepared for transmission electron microscopic observation and flow cytometry detection ResultsAfter nHAP treatment for 48 h, different concentrations of nHAP could inhibit the growth of ovarian cancer SKOV3 cells The IC30, IC50 and IC70 of ovarian cancer SKOV3 cells were calculated as 946, 2883 and 6080 mg/L, respectively During the 48h period of different concentrations of nHAP treatment, the inhibitory rate was elevated over time and remained slow and stable after 48 h Morphological observation and quantitative analysis demonstrated that 48h treatment with IC50 of nHAP could induce the apoptosis of ovarian cancer SKOV3 cells with a apoptosis rate of (4332±1253)%, significantly higher compared with (1088±548)% in the control group(P<005) Compared with the control group, the percentage of SKOV3 cells at G0/G1 phase was significantly higher, whereas the proportion of SKOV3 cells at S phase was considerably lower after treatment with IC50 of nHAP(both P<005) ConclusionsnHAP exerts significant effect upon suppressing the growth of ovarian cancer cell line SKOV3 The underlying mechanism is probably that nHAP affects the ovarian cancer SKOV3 cells during the S phase and induces the apoptosis of cancer cells
【Key words】Nanoscale hydroxyapatite; Ovarian cancer; Cell line
羟基磷灰石(HAP)的主要成分为钙和磷,因其生物相容性作用,常被用作骨修复生物材料[1]。近年研究报道,纳米HAP(nHAP)本身也具有抑制结肠癌、肝癌细胞的作用[27]。目前笔者尚未见nHAP对卵巢癌细胞的作用及相关机制研究,为此本研究观察了nHAP对卵巢癌细胞株SKOV3的生长抑制作用,并进一步深入探讨其机制,现报告如下。
材料与方法
一、材料
卵巢癌细胞株SKOV3由吉林大学第二医院妇科实验室提供。RPMI 1640培养基、小牛血清、碘化丙啶(PI)、胰酶、MTT选自美国Sigma公司,其余试剂均选自国产分析纯。nHAP长约60~80 nm,半径约5~10 nm。
二、方法
1卵巢癌SKOV3细胞的培养
适宜条件下于含小牛血清的RPMI 1640培养基中培养卵巢癌SKOV3细胞,隔日换液,按1∶3的比例传代。
2卵巢癌SKOV3细胞在nHAP中的生长情况检测
将nHAP用培养液配成 10种梯度浓度(10、20、50、100、150、200、250、300、350、400 mg/L),选对数期生长的卵巢癌SKOV3细胞进行试验。……
