Experimental study of gemcitabine combination with radiation in vitro on a highly metastatic human ovarian cancer cell line HO-8910PM

Objective： The aim of the study was to investigate the mechanism of gemcitabine （GEM） combination with radiation on the high metastasis human ovarian cancer cell line （HO-8910PM）. Methods： Human ovarian cancer cell line HO- 8910PM was treated with different concentrations of gemcitabine for 24 h, then the cells were counted. In the study of GEM combination with radiation, an efficiency of colony formation was observed; the cell cycle and apoptosis were analyzed by flow cytometry; the experiment of depend on the time and its radio sensitivity were observed by using mitotic index with the cells for each 24, 48, 72 and 96 h after experiment. Results： It suggested that the GEM had an inhibition effect on the human ovarian cancer cell line. The alive cell numbers were decreased by following a height of GEM concentration. When GEM in combina- tion with a radiation, the suppression was significantly increased than that of single GEM therapy. The efficiency of colony formation was significantly lower, under this condition the cell could be arrested at G0-G1 phase and could be decreased to enter into the S phase; the apoptosis percentage could be significantly increased; especially, under the 4 Gy and 6 Gy doses the cell apoptosis was more obvious. GEM combination with radiation had depended on the time to the cells; mitotic index of the calls in combination group was observed significantly lower than that of single GEM therapy or single radiation, and this showed that it had an effect of radiosensitivity. Conclusion： The GEM has a significant growth inhibition on the human ovarian cancer cells, GEM combination with radiation could induce HO-8910PM cell occurred arrested and apoptosis. It has depended on the time and has a radiosensitivity effect. The result shows that it is a better method to treat the human ovarian cancer by using radiotherapy combined with gemcitabine.

Inhibitory effect of a new gossypol derivative apogossypolone (ApoG2) on xenograft of human prostate cancer cell line PC-3

Objective: To investigate the inhibitory effect of apogossypolone (ApoG2) on prostate cancer cell line PC-3 in vivo, and explore its mechanism. Methods: The models of transplantation tumors in Balb/c nu/nu mice were established via subcutaneous injection of PC-3 cells and the tumor-transplanted mice were divided into 4 groups: control group and three ApoG2 treatment groups, with 10 mice in each group. Volumes of the tumor were estimated every 2 d and the morphology of tumor tissues was observed. Immunohistochemistry was employed to observe the expression of Bcl-2, PCNA, CD31, caspase-3 and caspase-8 in tumor tissues. Results: ApoG2 (2.5 mg/kg-10 mg/kg) given intraperitoneally once a day can obviously inhibit the growth of subcutaneous prostatic carcinoma implant. The tumor volume decreased obviously when the treatment dosage was bigger than 5.0 mg/kg (P<0.01). Meanwhile, ApoG2 decreased the expression of PCNA and CD31, and enhanced the expression of caspases-3, caspase-8 in tumor tissues. Conclusion: ApoG2 exert an inhibitory effect on prostatic carcinoma possibly by inducing apoptosis and inhibiting tumor angiogenesis.

Fermented Herbal Decoction Selectively Targeting Human Cancer Cell Line and Human Pathogenic Microorganism

Introduction: Prolonged immuno-suppressed status promised to induce internal growth of malignant cell and infectious agent, yet, only a small part of affected individuals seek medical attention or berried by commercially over-flowed fake information. Several studies have described complementary and alternative medicine as effective strategies for improving anti-infectious agent including malignant cell. The purpose of this study was to investigate the effect of a fermented herbal decoction (FHD) both in vitro and in vivo to malignant cells and microorganism by regulating leukocyte subset proportioning FHD as dietary material. Methods: In this approach of alternative study, selective anti-cancer effect by fermented decoction was tried to show first in vitro system both, cancer cell and virus strain. The fermented herbal decoction consisting of 80 sorts of herbs and fruits. The selective toxicity was set up and then for immunological factors in animal and human. The most important factor is to reduce side effect for a normal cell. Results: First, FHD was proved as safe by animal test. FHD regulated also the proportion of granulocyte and lymphocyte ratio both animal and human. In vitro culture showed selective toxicity by FHD against human melanoma and leukemia cell line but reduced toxicity was showed by normal cell line. As for the anti-virus activity, anti-virus effect was tested on the feeder layer of human fibroblast cell, after 9 days of culture. Second, FHD inhibits colon cancer growth in 3-methylholanthrene induced cancer in rat. Conclusion: The present results suggest that our fermented herbal decoction showed selective anti-cancer activities and anti-virus activities, together with the regulative effect on the immune system.

EFFECTS AND MECHANISMS OF ENDOSTATIN ON THE GROWTH OF OVARIAN CANCER SKOV_3 CELLS IN VITRO AND IN VIVO

Objective： To evaluate the inhibitory effect of Endostatin on ovarian cancer cell line SKOV3 and to investigate the possible mechanism of the inhibition. Methods： Using MTT, transmission electron microscope （TEM） and immunocytochemistry, the effects of Endostatin on the proliferation of SKOV3 cells were studied. Nude mice were subcutaneously implanted with SKOV3 cells. The cell apoptosis of implanted tumor was detected by TUNEL and TEM. The expressions of bcl-2 and bax in implanted tumor tissues were measured by RT-PCR and immunohistochemistry. Results： Endostatin significantly inhibited the proliferation of SKOV3 cells in vitro （P〈0.01） and induced cell apoptosis, whereas the expressions of bcl-2 and bax were not changed obviously in SKOV3 cell treated with Endostatin. The mean tumor weight of Endostatin treated group was markedly lower than that of PBS control group （P〈0.05）. The expression of bcl-2 was down-regulated in Endostatin treated group, but bax was not influenced. Conclusions： The results demonstrated that Endostatin might have anti-tumor effect on ovarian carcinoma. One of the important mechanisms of Endostatin effect of anti-angiogenic and anti-tumor activities might involve regulating the bcl-2/bax expression and inducing apoptosis.

Effect of Activin A on OVCAR-3 Ovarian Epithelial Cancer Cells

Objective： To investigate the proliferation effect and its pathway of activin A on Ovarian epithelial cancer cells line OVCAR-3. Methods： OVCAR-3 cells were cultured in vitro and the membrane receptor ActR II was detected by immunohistochemical method. The OVCAR-3 cells were cultured with 10 ng/ml activin A for 7 d to observe the effects. Activin A at 5, 10, 15 and 20 ng/ml was used separately to treat the OVCAR-3 cancer cells for 24, 48 and 72 h in order to draw the growth proliferation rate curve measured by MTT method. The expression of protein bcl-2 was detected by western-blot. When OVCAR-3 cells were treated with 10 ng/ml activin A and 5 lag/ml DDP for 24, 48 and 72 h, cell apoptosis could be detected by electron microscopy and flow cytometry （FCM）. Results： Positive expression of ActR II was detected. We also found that the proliferation of OVCAR-3 reached to the climax on the 5th day of culture. The experiments showed that the cells treated with activin A increased quickly and grew faster than those in control group. Moreover, OVCAR-3 cells treated with activin A for 48 h proliferated significantly greater than those treated for 24 h or 72 h （P〈0.01）. bcl-2 protein expression increased expression in activin A treated group than in control group （P〈0.05）. Conclusion： Activin A could increase the proliferation of OVCAR-3 cells which may be through bcl-2 anti-apoptosis pathway.

Effects of 4-(3-Chloro-Benzyl)-6,7-Dimethoxy-Quinazoline on Kinetics of P120-Catenin and Periplakin in Human Buccal Mucosa Squamous Carcinoma Cell Line

In order to detect molecular markers for the epidermal growth factor inhibitor 4-(3-chloro-benzyl)- 6,7-dimethoxy-quinazoline (tyrphostin), we investigated the kinetics of p120-catenin and periplakin in the human buccal mucosa squamous cancer cell line BICR 10 treated with 3 nM tyrphostin. Growth of BICR 10 cells was inhibited by treatment with tyrphostin. Although changes were not observed in the expression of EGFR and p120-catenin, expression of Akt, Src and periplakin in BICR 10 treated with 3 nM tyrphostin tended to decrease. In addition, phosphorylation of EGFR, Akt and Src was inhibited by treatment with tyrphostin. On immunocytochemical staining, immunoreactions with phosphorylated EGFR, phosphorylated Akt and phosphorylated p120-catenin were weak in BICR 10 treated with tyrphostin. There was a slight immunocy to chemical reaction to periplakin in BICR 10 cells induced by tyrphostin. In conclusion, the decrease in phosphorylation in EGFR and p120-catenin by tyrphostin, following the decrease in Src or Akt phosphorylation, may inhibit expression of several growth factors associated with the proliferation and migration of cancer cells.

Far Infrared Ray Radiation Inhibits the Proliferation of A549, HSC3 and Sa3 Cancer Cells through Enhancing the Expression of ATF3 Gene

Far-infrared ray (FIR) is electromagnetic wave between 4 and 1000 μm. FIR causes heating, but how it affects cells is not well understood. In this study, we developed a culture incubator that can continuously irradiate cells with FIR and examined the effects of FIR on five human cancer cell lines, namely A431 (vulva), A549 (lung), HSC3 (tongue), MCF7 (breast) and Sa3 (gingiva). We found that FIR inhibits cell proliferation and induces cell hypertrophy without apoptosis in A549, HSC3 and Sa3 cells. Flow cytometry revealed that the inhibition of proliferation was due to G2/M arrest. Contrary, FIR did not inhibit cell proliferation and cause cell hypertrophy in A431 or MCF7 cells. Microarray analysis revealed that FIR suppressed the expression of cell proliferation-related and stress-responsive genes in FIR-sensitive cell lines (A549, HSC3 and Sa3). ATF3 in particular was identified as a key mediator of the FIR effect. Over-expression of ATF3 inhibited cell proliferation and knockdown of ATF3 mRNA using an antisense oligonucleotide suppressed FIR-induced growth arrest. These results indicate that a body temperature range of FIR radiation suppresses the proliferation of A549, HSC3, Sa3 cells and it appears that ATF3 play important roles in this effect.

Gene expression profile differences in high and low metastatic human ovarian cancer cell lines by gene chip

Objectives To study the difference between gene expressions of high (H0-8910PM) and low (HO-8910) metastatic human ovarian carcinoma cell lines and screen novel associated genes by cDNA microarray. Methods cDNA retro-transcribed from equal quantities of mRNA derived from high and low metastatic tumor cells or normal ovarian tissues were labeled with Cy5 and Cy3 fluorescein as probes. The mixed probe was hybridized with two pieces of BioDoor 4096 double dot human whole gene chip and scanned with a ScanArray 3000 laser scanner. The acquired image was analyzed by ImaGene 3.0 software. Results A total of 355 genes with expression levels more than 3 times larger were found by comparing the HO-8910 cell with normal ovarian epithelial cells. A total of 323 genes with expression levels more than 3 times larger in HO-8910PM cells compared to normal ovarian epithelium cells were also detected. A total of 165 genes whose expression levels were more than two times those of HO-8910PM cells compared to their mother cell line (HO-8910) were detected. Twenty-one genes with expression levels 】3 times were found from comparison of these two tumor cell lines.Conclusions cDNA microarray techniques are effective in screening differential gene expression between two human ovarian cancer cell lines (H0-8910PM; HO-8910) and normal ovarian epithelial cells. These genes may be related to the genesis and development of ovarian carcinoma. Analysis of the human ovarian cancer gene expression profile with cDNA microarray may help in gene diagnosis, treatment and prevention.

白藜芦醇通过介导GAL-3表达促进卵巢癌细胞凋亡并增强其化疗感性

目的 探讨白藜芦醇(RES)对卵巢癌细胞凋亡和化疗敏感性的影响及其作用机制。方法研究样本为卵巢癌SKOV3细胞,分为3组,每组11株,均进行常规培养,对照组不给予干预,顺铂组给予10μmol/L顺铂干预,RES+顺铂组给予50μmol/L RES+10μmol/L顺铂干预。采用CCK-8实验检测细胞活力,BrdU实验检测细胞增殖,Annexin V-FITC/PI双染细胞凋亡试验检测细胞凋亡,比色测定试验检测caspase-3活性,Transwell细胞迁移实验检测细胞迁移能力,侵袭试验检测细胞侵袭能力,蛋白质印迹分析caspase-3、GAL-3、p-Akt、AKT、Iκβα、P65、Bcl-2、 p-IKKα/β蛋白相对表达。结果 RES+顺铂组、顺铂组、对照组细胞活力分别为(62±14)%、(74±16)%、(98±16)%,细胞增殖率分别为(59±16)%、(76±17)%、(97±17)%,RES+顺铂组、顺铂组细胞活力、细胞增殖率显著低于对照组,RES+顺铂组显著低于顺铂组(P<0.05);RES+顺铂组、顺铂组、对照组细胞凋亡率分别为(64.29±13.14)%、(47.48±9.52)%、(14.72±3.03)%,RES+顺铂组、顺铂组细胞凋亡率显著高于对照组,RES+顺铂组显著高于顺铂组(P<0.05);RES+顺铂组caspase-3活性、蛋白相对表达显著高于顺铂组、对照组(P<0.05);RES+顺铂组、顺铂组细胞迁移量、细胞侵袭量显著低于对照组,RES+顺铂组显著低于顺铂组(P<0.05);RES+顺铂组GAL-3、p-Akt蛋白相对表达显著低于顺铂组、对照组(P<0.05),各组AKT蛋白表达差异无统计学意义(P<0.05);RES+顺铂组、顺铂组p-IKKα/β、P65、Bcl-2、蛋白相对表达显著低于对照组,RES+顺铂组显著低于顺铂组(P<0.05);RES+顺铂组、顺铂组Iκβα蛋白相对表达显著高于对照组,RES+顺铂组显著高于顺铂组(P<0.05)。结论 RES诱导癌细胞凋亡可能与GAL-3水平降低有关。其作用机制可能是通过调节卵巢癌细胞凋亡、转移相关蛋白表达抑制其增殖、侵袭并增强其对顺铂的敏感性。

大蒜素对人卵巢癌SKOV3/DDP细胞增殖与凋亡的影响及机制

探讨大蒜素(DT)对人上皮性卵巢癌SKOV-3/DDP细胞的增殖抑制及诱导其细胞凋亡的分子机制。用人上皮性卵巢癌耐顺铂细胞株SKOV-3/DDP细胞随机分为4组:①正常对照组;②DT组:于培养基中加入DT(终浓度分别为5、10、20、40μg·mL-1)分别作用细胞24、48和72h;③顺铂(DDP)组(5μg·mL-1);④DT+DDP组(20μg·mL-1 DT和5μg·mL-1 DDP)。MTT比色法检测细胞存活率,流式细胞术检测细胞凋亡率,RT-PCR和Western blot分别检测基因bax、bcl-2的mRNA和蛋白表达。与正常对照组比较,DT组SKOV-3/DDP细胞增殖抑制率与凋亡率均有显著的增加(P<0.05),且作用呈剂量和时间依赖性,Bax mRNA和蛋白表达上调,Bcl-2mRNA和蛋白表达下调(P<0.05);与DT或DDP组比较,DDP+DT组的细胞生长抑制率及凋亡率均有显著增加(P<0.05),且Bax mRNA及蛋白表达上调,Bcl-2mRNA和蛋白表达下调的程度大于单用组(P<0.05)。大蒜素对SKOV-3/DDP细胞有显著的抑制增殖和促凋亡的作用,增加SKOV-3/DDP细胞对顺铂的敏感性,其机制可能与大蒜素调控Bax/Bcl-2蛋白表达有关。

莪术醇对人卵巢癌SKOV3细胞株JAK2/STAT3信号通路影响的研究

目的观察莪术醇对人卵巢癌SKOV3细胞株体外生长的影响及对SKOV3细胞株JAK2/STAT3信号通路基因表达的影响,探讨莪术醇治疗卵巢癌的分子机制。方法不同浓度莪术醇作用于人卵巢癌细胞株SKOV3,MTT法检测SKOV3细胞的增殖抑制率,实时荧光定量-PCR法检测SKOV3细胞中JAK2、STAT3基因表达水平。结果莪术醇对卵巢癌SKOV3细胞有明显的增殖抑制作用,其强度随药物作用时间及浓度的增加而增强,呈时间-剂量依赖性。实时荧光定量-PCR法检测证实莪术醇作用后SKOV3细胞中JAK2、STAT3基因表达受到明显抑制。结论莪术醇能明显抑制SKOV3细胞的体外增殖,诱导细胞凋亡,其机制可能是通过降调节JAK2、STAT3基因的表达来实现的。

42℃温热联合顺铂对人卵巢癌细胞SKOV3毒性的影响

目的探讨42℃温热联合化疗药物顺铂对人卵巢癌细胞株SKOV-3作用的规律及其机制。方法应用四氮唑蓝快速比色法测定42℃热疗组、单纯化疗组以及以不同序贯方式结合的热化疗组对人卵巢癌细胞SKOV-3的生长抑制率;流式细胞仪测定各组细胞周期的变化;金氏公式分析相互作用指数,评价温热化疗两因素联合的作用。结果 42℃单纯热疗和单纯化疗均对卵巢癌癌细胞有抑制和杀伤作用;42℃热疗与化疗药物以不同方式联合,抑制作用均强于单纯化疗组和单纯热疗组(P<0.05),尤以热化疗同时作用组效果最佳(P<0.001);细胞周期分析发现:42℃热疗降低了S期细胞所占比例;与单纯化疗组相比,先化疗后热疗组、先热疗后化疗组和热化疗同时组的S期细胞所占比例减少,G1期细胞增多,其中热化疗同时组增减的幅度最大。结论 42℃温热可以明显增强化疗药顺铂的毒性,结合方式上以热化疗同时进行最佳,其作用机制可能与干扰细胞周期有关。

二氢黄腐酚通过调控HK2表达对人卵巢癌顺铂耐药细胞株SKOV3/DDP的耐药性影响

目的 目前二氢黄腐酚通过调控HK2表达对人卵巢癌顺铂耐药细胞株SKOV3/DDP的耐药性影响及其机制研究较少。文中旨在研究黄腐酚衍生物二氢黄腐酚(DXN)对人卵巢癌顺铂耐药(DDP)细胞株SKOV3/DDP耐药影响和机制。方法 SKOV3/DDP细胞分成对照组、DXN组(4μmol/L DXN)、DDP组(4 mg/L DDP)、DXN+DDP组(4μmol/L DXN+4 mg/L DDP)、DXN+DDP+Vector组(转染空载质粒+4μmol/L DXN+4 mg/L DDP)、DXN+DDP+HK2组(转染HK2过表达载体+4μmol/L DXN+4 mg/L DDP)、si-NC组(转染siRNA control)、si-HK2组(转染HK siRNA)。MTT方法检测其增殖,计算IC50及其逆转倍数,Western blot检测HK2蛋白表达,测定葡萄糖摄取、乳酸产量。结果 DDP单独处理的IC50为16.17mg/L,联合DXN处理的IC50为9.72 mg/L,逆转倍数为1.66。与对照组和DDP组比较,DXN+DDP组的DDPSKOV3/DDP细胞HK2蛋白表达量、葡萄糖相对摄取量、乳酸相对生成量明显降低(P<0.05)。si-NC组、si-HK2组细胞与DDP处理后,IC50分别为17.92、11.17 mg/L,逆转倍数为1.60。与si-NC组比较,si-HK2组SKOV3/DDP细胞HK2蛋白表达量、葡萄糖相对摄取量、乳酸相对生成量明显降低(P<0.05)。与对照组和DXN+DDP+Vector组比较,DXN+DDP+HK2组SKOV3/DDP细胞中HK2蛋白表达量、葡萄糖相对摄取量、乳酸相对生成量明显升高(P<0.05)。计算DXN(0μmol/L)、DXN(4μmol/L)+Vector、DXN(4μmol/L)+HK2细胞与DDP处理后IC50分别为16.59、9.66、13.10 mg/L,DXN对SKOV3/DDP细胞DDP耐药的逆转倍数为1.72,过表达HK2和DXN联合处理对SKOV3/DDP细胞DDP耐药的逆转倍数为1.27。结论 DXN通过抑制HK2进而抑制有氧糖酵解逆转SKOV3/DDP耐药,为研究DXN在卵巢癌耐药中的作用机制奠定了基础。

固体脂质纳米姜黄素联合顺铂对卵巢癌SKOV3的增殖及Bax/Bcl-2蛋白表达的实验研究

目的:研究固体脂质纳米姜黄素(Curcumin-loaded solid lipid nanoparticles,SLN-Cur)与顺铂(Cisplatin,DDP)联用对人卵巢癌SKOV3细胞株生长的影响及促凋亡作用。方法:姜黄素(Curcumin,Cur)制备成SLN-Cur新型给药系统,分别检测DDP、Cur、SLN-Cur、DDP+Cur、DDP+SLN-Cur对人卵巢癌SKOV3细胞株凋亡形态学变化及超微结构变化,细胞凋亡率及凋亡相关基因蛋白的表达。结果:SLN-Cur可抑制SKOV3细胞生长,抑制率与药物浓度及作用时间成依赖关系,24 h IC50=40.14μmol/L,DDP与SLN-Cur联合诱导细胞凋亡作用增强,具有显著协同作用;Bcl-2表达减弱,Bax表达增强。结论:SLN-Cur合用DDP对SKOV3细胞株具有较好的抑制增殖及促凋亡作用,通过下调Bcl-2表达及上调Bax表达而诱导细胞凋亡。

沉默信息调节因子3对白藜芦醇诱导的人卵巢癌SKOV3细胞凋亡的影响

目的:检测沉默信息调节因子3 (Sirt3)对白藜芦醇(Res)诱导的人卵巢癌SKOV3细胞凋亡的影响,探讨其促进凋亡的机制。方法:人卵巢癌SKOV3细胞加入不同浓度(0、2.5、5.0、10.0、20.0、40.0和80.0mg·L-1)Res培养24h,MTT法检测细胞存活率。将细胞随机分为对照组、Sirt3抑制剂3-(1H-1,2,3-三唑-4-基)吡啶(3-TYP)组、Res组和3-TYP+Res组,培养24h后,MTT法检各组细胞增殖抑制率;采用Hoechst 33342进行细胞核染色,激光共聚焦显微镜观察细胞核形态;采用活性氧(ROS)探针检测细胞中ROS水平;Western blotting法检测各组细胞中Sirt3、B细胞淋巴瘤/白血病-2 (Bcl-2)、Bcl-2相关X蛋白(Bax)和含半胱氨酸的天冬氨酸蛋白水解酶3 (cleaved caspase-3)蛋白表达水平。结果:MTT实验,随着Res浓度的增加,细胞存活率明显降低,Res的半数抑制浓度(IC50)为42.73mg·L^-1。与对照组比较,Res组和3-TYP+Res组细胞增殖抑制率明显升高(P<0.05);与Res组比较,3-TYP+Res组细胞增殖抑制率明显升高(P<0.05)。与对照组比较,3-TYP+Res组细胞核出现固缩、染色增强、核碎裂增多。与对照组比较,3-TYP组细胞红色荧光无明显变化,Res组和3-TYP+Res组细胞红色荧光明显减少。Western blotting法检测,与对照组比较,3-TYP组细胞中Sirt3蛋白表达水平明显降低(P<0.05),Bcl-2、Bax和cleaved caspase-3蛋白表达水平无明显变化(P>0.05),Res组细胞中Sirt3和Bcl-2蛋白表达水平明显降低(P<0.05),Bax和cleaved caspase-3蛋白表达水平明显升高(P<0.05);与Res组比较,3-TYP+Res组细胞中Bax和cleaved caspase-3蛋白表达水平明显升高(P<0.05),Bcl-2和Sirt3蛋白表达水平明显降低(P<0.05)。结论:Res可以诱导SKOV3细胞的凋亡,3-TYP通过抑制Sirt3表达可增强Res的作用。

二价阳离子对人SKOV3卵巢癌细胞株细胞黏附、细胞侵袭和细胞转移的影响

目的探讨二价阳离子对人SKOV3卵巢癌细胞株细胞黏附、细胞侵袭和细胞转移的影响。方法将人SKOV3卵巢癌细胞株按常规方法进行培养,待细胞长到80%~90%汇合时用0.25%胰蛋白酶-EDTA消化液消化、传代。取生长良好的P3或P4代细胞按是否加入二价阳离子分为对照组（不加入二价阳离子）和实验组[加入二价阳离子：Ca2＋（2.5、5.01、0.0 mmol·L-1）组和Zn2＋（1.01、0.0 mmol·L-1）组]。在光学显微镜下对各组黏附细胞进行计数。在570 nm波长的酶标仪下测定各组侵袭和转移细胞的OD值,以OD值代表细胞侵袭率和细胞转移率。结果 Ca2＋对人SKOV3卵巢癌细胞黏附具有抑制作用,作用随药物浓度增加而增强,呈剂量依赖性。Ca2＋细胞黏附抑制率范围为10.2%~62.2%,各Ca2＋浓度组人SKOV3卵巢癌细胞黏附率与对照组比较差异有统计学意义（P〈0.05）。Zn2＋浓度在1.0 mmol·L-1时,黏附细胞略有增多,与对照组比较差异无统计学意义（P〉0.05）;在10.0 mmol·L-1时,黏附细胞数量显著降低,与对照组比较差异有统计学意义（P〈0.05）。Ca2＋、Zn2＋对人SKOV3卵巢癌细胞侵袭和细胞转移的抑制作用随药物浓度增加而增强,呈剂量依赖性。细胞侵袭抑制率：Ca2＋范围为24.9%~63.2%,Zn2＋范围为66.1%~87.8%;细胞转移抑制率：Ca2＋范围为22.5%~55.6%,Zn2＋范围为73.1%~91.7%。各Ca2＋、Zn2＋浓度组人SKOV3卵巢癌细胞侵袭率和细胞转移率与对照组比较差异均有统计学意义（均P〈0.05）。结论人SKOV3卵巢癌细胞株细胞受到体外二价阳离子浓度的影响,提示配制适当的二价阳离子溶液进行术中冲洗可能会减少卵巢癌细胞的种植和转移。

雷公藤红素通过活性氧诱导人卵巢癌SKOV3细胞凋亡的研究

目的研究雷公藤红素通过细胞内活性氧(Reactive oxidative species,ROS)诱导人卵巢癌SKOV3细胞凋亡的作用机制。方法通过MTT比色法检测雷公藤红素对人卵巢癌SKOV3细胞增殖的抑制作用;通过Hoechst 33258染色荧光显微镜观察SKOV3细胞凋亡的形态学变化;通过流式细胞术检测SKOV3细胞凋亡及ROS水平;Western blot法检测凋亡相关蛋白bcl-2、cleaved caspase-3、cleaved caspase-9蛋白的表达。结果雷公藤红素对卵巢癌SKOV3细胞具有明显的增殖抑制作用,且呈时间/剂量依赖关系(P<0.05);雷公藤红素可显著增加细胞内ROS水平,诱导卵巢癌SKOV3细胞凋亡,并上调cleaved caspase-3、cleaved caspase-9蛋白的表达,下调抗凋亡蛋白bcl-2的表达(P<0.05)。结论雷公藤红素可通过提高细胞内ROS水平,诱导人卵巢癌SKOV3细胞凋亡,为卵巢癌治疗及预后方面的研究提供了新思路。

SPAG6促进卵巢癌细胞的增殖、迁移和侵袭

目的:探讨抑制精子相关抗原6(sperm-associated antigen 6,SPAG6)对卵巢癌细胞增殖、侵袭和迁移的影响。方法:体外培养正常卵巢上皮细胞(NOE-71)和卵巢癌细胞(SKOV-3、OVCAR-3),采用实时荧光定量PCR(RT-qPCR)实验检测细胞中SPAG6基因的表达。将4种潜在抑制SPAG6基因表达的“SPAG6-shRNA”质粒分别转染到SKOV-3细胞,RT-qPCR和Western blot实验筛选有效抑制SPAG6基因表达的细胞株;采用细胞计数法和平板克隆实验检测抑制SPAG6基因表达对卵巢癌细胞增殖的影响;运用细胞划痕实验和Transwell实验检测抑制SPAG6基因表达对细胞迁移和侵袭能力的影响;流式细胞实验检测抑制SPAG6基因表达对细胞周期的影响;免疫荧光实验和Western blot检测在SKOV-3细胞中抑制SPAG6表达对p27kip1分布的影响。结果:SPAG6基因在卵巢癌细胞SKOV-3和OVCAR-3中的表达均显著高于正常卵巢上皮细胞NOE-71,且在SKOV-3细胞中表达最强。RT-qPCR和Western blot实验显示2种“SPAG6-shRNA”质粒能够有效抑制SKOV-3细胞中SPAG6基因的表达;与对照组细胞相比,抑制SPAG6基因表达能够降低SKOV-3细胞的增殖,差异有统计学意义(P<0.01);平板克隆实验显示抑制SPAG6基因表达能降低SKOV-3细胞的克隆形成率,差异有统计学意义(P<0.01);细胞划痕实验和Transwell实验显示抑制SPAG6基因表达能够降低卵巢癌细胞的迁移和侵袭能力(P<0.01);流式细胞实验显示抑制SPAG6基因表达能使细胞G0/G1期显著上调,S期显著下调(P<0.01)。SKOV-3细胞中抑制SPAG6表达可降低细胞质中p27kip1的水平而增加细胞核中p27kip1的水平。结论:SPAG6促进卵巢癌细胞的增殖、迁移和侵袭。

白皮杉醇对卵巢癌细胞增殖、迁移、侵袭的影响及其诱导凋亡作用的实验研究

目的:探究白皮杉醇对人卵巢癌SKOV-3细胞增殖、迁移和侵袭的影响以及相关的作用机制。方法:采用CCK8法检测不同浓度的白皮杉醇对SKOV-3细胞增殖能力的影响;采用细胞划痕实验检测不同浓度的白皮杉醇对SKOV-3细胞迁移能力的影响;采用Transwell侵袭实验检测不同浓度的白皮杉醇对SKOV-3细胞侵袭能力的影响;采用DAPI染色法检测不同浓度白皮杉醇对SKOV-3细胞凋亡的影响;采用Western blot实验检测SKOV-3细胞核增殖抗原(Ki67)、B淋巴细胞瘤-2(Bcl-2)、BCL-2相关X蛋白(Bax)和活化的半胱氨酸蛋白酶(Cleaved caspase-3)的表达水平。结果:白皮杉醇能够明显抑制SKOV-3细胞的增殖能力,明显降低SKOV-3细胞的迁移能力和侵袭能力;明显提高SKOV-3细胞的凋亡水平;白皮杉醇干预后,SKOV-3细胞Ki67和Bcl-2蛋白表达显著降低,Bax和Cleaved caspase-3蛋白表达显著升高。结论:白皮杉醇能够有效抑制SKOV-3细胞的增殖、迁移和侵袭,并能够诱导SKOV-3细胞凋亡。

人表皮生长因子受体2对卵巢癌细胞凋亡、侵袭的影响及机制研究

目的 探讨人表皮生长因子受体2(HER2)对卵巢癌细胞A2780和SKOV3凋亡、侵袭的影响及机制。方法 收集27例卵巢癌患者的27对卵巢癌组织和癌旁组织作为组织样本,选取卵巢癌细胞(A2780细胞和SKOV3细胞)、卵巢上皮细胞HOSEpiC作为实验细胞。采用实时定量聚合酶链反应(qRT-PCR)、蛋白免疫印迹法、免疫组织化学技术检测HER2、E74样ETS转录因子3(ELF3)、音猬因子(SHH)、GLIS家族锌指蛋白1(GLI1)等表达水平;采用细胞计数试剂盒8(CCK-8)法、流式细胞仪和Transwell小室实验检测A2780细胞和SKOV3细胞的活力、凋亡率和侵袭能力。结果 HER2蛋白和HER2 mRNA在卵巢癌组织中的表达均高于癌旁组织,HER2蛋白在A2780细胞、SKOV3细胞中的表达均高于HOSEPiC细胞,差异有统计学意义(P<0.05)。A2780、SKOV3细胞中,与转染si-NC的细胞相比,转染si-HER2的细胞HER2蛋白表达水平降低,且细胞活力降低、细胞凋亡率增加、侵袭细胞数减少,差异有统计学意义(P<0.05)。A2780、SKOV3细胞中,转染si-HER2的细胞ELF3 mRNA表达均低于转染si-NC的细胞,且转染si-HER2+ELF3的细胞ELF3 mRNA表达均高于转染si-HER2+pcDNA的细胞,差异有统计学意义(P<0.05);与转染si-NC的细胞相比,转染si-HER2的细胞活力降低、细胞凋亡率增加、侵袭细胞数减少,差异有统计学意义(P<0.05);与转染si-HER2+pcDNA的细胞相比,转染si-HER2+ELF3的细胞活力增加、细胞凋亡率降低、侵袭细胞数增加,差异有统计学意义(P<0.05)。A2780、SKOV3细胞中,转染si-HER2的细胞SHH、GLI1蛋白表达均低于转染si-NC的细胞,转染si-HER2+ELF3的细胞SHH、GLI1蛋白表达均高于转染si-HER2+pcDNA的细胞,差异有统计学意义(P<0.05)。结论 HER2沉默可通过调控ELF3/SHH通路促进卵巢癌细胞凋亡和抑制卵巢癌细胞侵袭,靶向抑制HER2或可成为治疗卵巢癌的一种有效策略。