K252a inhibits proliferation of ovarian cancer cells by upregulating p21WAF1

The furanosylated indolocarbazole, K252a, belongs to a family of microbial alkaloids that also includes staurosporine, which is known to inhibit proliferation, stimulate apoptosis and induce cell cycle arrest of cancer cells. To elucidate the involvement of K252a in ovarian cancer, we investigated the effects of K252a on the ovarian cancer cell line, SK-OV-3. SK-OV-3 cells were treated with K252a, and its effect on cell growth, cell cycle, and related measurements was assessed. MTT assays showed that the ovarian cancer cell line SK-OV-3 cells were sensitive to the growth inhibitory effect of K252a. Cell cycle analysis indicated that their exposure to K252a decreased the proportion of cells in the S-phase and increased the proportion of cells in the G0/G1 phase of the cell cycle. This occurred in concert with altered expression of p21WAF1 protein related to the G0/G1 phase of the cell cycle. These results raise the possibility that K252a may prove particularly effective in treatment of ovarian cancer.     

miR－300对人卵巢癌细胞增殖、周期及凋亡的影响

目的：研究 miR－300对人卵巢癌细胞增殖、凋亡和周期的影响。方法：通过荧光实时定量 PCR （qRT－PCR）检测卵巢正常上皮细胞及卵巢癌细胞中miR－300的表达水平和miR－300 siRNA的沉默效果;CCK－8法检测沉默miR－300对卵巢癌细胞增殖的影响;流式细胞术检测沉默miR－300对卵巢癌细胞凋亡和周期的影响。结果：miR－300在卵巢癌细胞中的表达显著高于卵巢正常上皮细胞;miR－300 siRNA可有效沉默卵巢癌细胞中miR－300的表达;沉默miR－300的表达可以明显抑制卵巢癌细胞的增殖能力,增强卵巢癌细胞的凋亡能力,并使卵巢癌细胞的周期阻滞于G1期。结论：miR－300在卵巢癌细胞的增殖、凋亡和周期过程中起着重要的调控作用。     

Phosphorylation site mutated RB exerts contrasting effects on apoptotic response to different stimuli

The retinoblastoma tumor-suppressor protein (RB) is an important regulator of cell cycle and apoptosis. RB is phosphorylated by cyclin-dependent protein kinase during cell cycle progression. A phosphorylation site mutated (PSM)-RB has previously been shown to cause G1 arrest and to interfere with S phase progression. In this study, we examined the effect of inducible PSM-RB expression on the apoptotic response to three different death stimuli: doxorubicin (DOXO), staurosporine (STS) and tumor necrosis factor (TNF) in Rat-16 cells. Induced expression of PSM-RB attenuated caspase activation by DOXO as a result of cell cycle arrest. STS has been shown to cause RB-dependent G1 arrest or apoptosis; however, expression of PSM-RB did not prevent caspase activation by STS. Surprisingly, induced expression of PSM-RB stimulated the apoptotic response to TNF in Rat-16 cells, which mostly undergo necrosis in the absence of PSM-RB. These results show that PSM-RB exerts disparate effects on apoptotic response to different stimuli, and that cell cycle arrest does not always associate with resistance to apoptosis.     

下调fascin抑制卵巢癌细胞从G0/G1期向S期转变的实验研究

目的:研究下调聚束蛋白（fascin）对卵巢癌细胞周期、增殖和凋亡的影响。方法:卵巢癌细胞SKOV3感染阴性对照慢病毒载体、shRNA fascin 1慢病毒载体、shRNA fascin 2慢病毒载体，用Real-time PCR和Western blot检测干扰效果。MTT检测增殖活性，克隆形成实验检测细胞克隆形成能力，流式细胞术检测细胞周期和细胞凋亡，Western blot检测细胞中活化型Caspase-3（Cleaved Caspase-3）、细胞周期依赖性蛋白激酶4(cyclin-dependent kinase 4，Cdk4)、活化型Caspase-9（Cleaved Caspase-9）和p21蛋白水平。结果:shRNA fascin 1慢病毒载体、shRNA fascin 2慢病毒载体感染后的SKOV3细胞中fascin mRNA和蛋白表达水平均降低，并且shRNA fascin 1慢病毒载体感染后细胞中fascin mRNA和蛋白表达水平下降更多。下调fascin后的卵巢癌细胞增殖能力降低，细胞克隆形成能力也降低，细胞G0/G1期比例升高，细胞凋亡率升高，细胞中活化型Caspase-3、活化型Caspase-9蛋白水平升高，p21蛋白水平也升高，Cdk4蛋白水平降低，与感染阴性对照慢病毒载体和未经感染的细胞比较，差异有统计学意义（P<0.05）。结论:下调fascin可降低卵巢癌细胞增殖能力、抑制卵巢癌细胞从G0/G1期向S期转变并诱导卵巢癌细胞凋亡。     

RNA干扰survivin基因对卵巢癌细胞生长凋亡及药物敏感性的影响

目的 探讨下调survivin基因对卵巢癌顺铂(DDP)耐药细胞株SKOV3/DDP细胞生长、凋亡及药物敏感性的影响.方法 构建survivin基因的小干扰RNA(siRNA)表达载体pSilencer-survivin,用脂质体方法转染SKOV3/DDP细胞株,另设未转染组和转染pSilencer-control组作为对照.显微镜下观察转染前后细胞的变化,逆转录聚合酶链反应(RT-PCR)和Western blot分别检测survivinmRNA及蛋白的表达,二苯基溴化四氮唑蓝(MTT)法检测细胞生长情况,流式细胞仪检测细胞凋亡及周期的变化.各组细胞加入DDP,检测其对DDP药物敏感性的影响.结果 survivin siRNA可明显下调SKOV3/DDP细胞中survivin mRNA及蛋白表达水平.SKOV3/DDP细胞生长受到明显抑制,生长曲线低平.转染48 h后,转染pSilencer-survivin组细胞凋亡率为19.1%,明显高于末转染组(2.6%)和转染pSilencer-control组(3.5%),G1/G0期细胞所占的比例增高,而G2/M期细胞所占的比例降低.转染pSilencer-survivin组细胞的IC50明显降低,为1.16 μg/mi.结论 survivin siRNA可下调SKOV3/DDP细胞中survivin的表达,使细胞生长减慢,凋亡增加,对DDP的药物敏感性增强.     

Upregulation of survivin in G2/M cells and inhibition of caspase 9 activity enhances resistance in staurosporine-induced apoptosis

Survivin, a member of the inhibitor of apoptosis (IAP) gene family, plays an important role in both the regulation of cell cycle and the inhibition of apoptosis, and is frequently overexpressed in many tumor types. In neuroblastomas, the expression of survivin correlates with a more aggressive and histologically unfavorable disease. Survivin is predominantly a cytoplasmic protein that is expressed in a cell cycle-dependent manner, increasing in the G2/M phase of the cell cycle followed by a rapid decline in the G1 phase. Recently, the role of survivin in resistance to chemotherapy has become an area of intensive investigation. In this study, we demonstrate a phase-specific resistance due to survivin in staurosporine (STS)-induced apoptosis in the human neuroblastoma cell line SK-N-MC. G2/M-arrested cultures show an upregulation of survivin expression and are more resistant, whereas G1-phase cells that show decreased levels of survivin are more sensitive to apoptosis. Localization studies revealed differences in the distribution of survivin in two synchronized populations, with G1 cells having weakly positive staining confined to the nucleus, in contrast to G2/M cells that depicted a more uniform and intense expression of survivin throughout the cell. In our experimental system, STS induced apoptosis through the mitochondrial-caspase 9-mediated pathway. Retention of survivin in G1 cells by inhibition of the ubiquitin-proteosome pathway or inhibition of caspase 9 protected the cells against apoptosis. Our data suggest that survivin exerts its antiapoptotic effect by inhibiting caspase 9 activity, an important event in STS-mediated apoptosis. In context with cell cycle-dependent responses to chemotherapy, the data from this study suggest the possibility of exploiting the survivin pathway for inducing apoptosis in tumor cells.     

Adenosine induces cell cycle arrest and apoptosis via cyclinD1/Cdk4 and Bcl-2/Bax pathways in human ovarian cancer cell line OVCAR-3

Adenosine is a regulatory molecule with widespread physiological effects in almost every cells and acts as a potent regulator of cell growth. Adenosine has been shown to inhibit cell growth and induce apoptosis in the several cancer cells via caspase activation and Bcl-2/Bax pathway. The present study was designed to understand the mechanism underlying adenosine-induced apoptosis in the OVCAR-3 human ovarian cancer cells. MTT viability, BrdU and cell counting assays were used to study the cell proliferation effect of adenosine in presence of adenosine deaminase inhibitor and the nucleoside transporter inhibitor. Cell cycle analysis, propidium iodide and annexin V staining, caspase-3 activity assay, cyclinD1, Cdk4, Bcl-2 and Bax protein expressions were assessed to detect apoptosis. Adenosine significantly inhibited cell proliferation in a concentration-dependent manner in OVCAR-3 cell line. Adenosine induced cell cycle arrest in G0/G1 phase via Cdk4/cyclinD1-mediated pathway. Adenosine induced apoptosis, which was determined by Annexin V-FITC staining and increased sub-G1 population. Moreover, down-regulation of Bcl-2 protein expression, up-regulation of Bax protein expression and activation of caspase-3 were observed in response to adenosine treatment. The results of this study suggest that extracellular adenosine induced G1 cell cycle arrest and apoptosis in ovarian cancer cells via cyclinD1/ Cdk4 and Bcl-2/Bax pathways and caspase-3 activation. These data might suggest that adenosine could be used as an agent for the treatment of ovarian cancer.     

Increased expression of phospho-acetyl-CoA carboxylase protein is an independent prognostic factor for human gastric cancer without lymph node metastasis

Triptolide is a traditional Chinese medicinal herb-derived antineoplastic agent. However, its antitumor activity against gynecologic carcinomas has not yet been well described. It is the purpose of this article to investigate the effect and mechanism of triptolide in human ovarian cancer using both A2780 (p53 wild) and OVCAR-3 (p53 mutated) cells. Our results showed that triptolide exerted a potent inhibitory effect on the growth and proliferation of both cell lines in a dose- and time-dependent manner and that the effect was independent of the expression of p53. In contrast, triptolide had only a marginal cytotoxicity in noncancerous ovary cells, lung fibroblast cells, and macrophage cells, indicating differential inhibitory effects of the drug on cell growth between ovarian cancer cells and normal tissue cells. Exposure of the ovarian cancer cells to triptolide induced apoptosis, as evaluated by annexin V/propidium iodide-labeled flow cytometry. Triptolide-induced apoptosis was accompanied by cytochrome c release and caspase-3 activation and was associated with downregulation of Bcl-2 and upregulation of Bax. Cell cycle analysis demonstrated that treatment with triptolide induced cell cycle S phase arrest in A2780 cells and G2/M phase arrest in OVCAR-3 cells. Further detection by Western blotting revealed that the cell cycle arrest by triptolide in both cell lines occurred in concert with increased expression of p21^CIP1/WAF1. This study shows that triptolide selectively kills ovarian cancer cells with different p53 status predominantly through regulating the coordinate and dynamic cellular processes of proliferation and apoptosis, thereby making it a promising chemotherapeutic agent against a broad spectrum of ovarian carcinomas.     

沉默YAP逆转肺癌PC9细胞多柔比星耐药性及其机制研究

背景与目的：耐药性是导致肺癌患者化疗失败的主要原因。探讨YAP对人肺癌PC9细胞多柔比星耐药的逆转作用及其机制。方法：利用体外筛选方法从多柔比星敏感性肺癌细胞系PC9获得耐药细胞克隆,并检测YAP的表达水平;利用shRNA沉默细胞中YAP的表达,应用MTS法检测肿瘤细胞药物敏感性,流式细胞术检测细胞周期、凋亡及对Rh-123的吸收能力,蛋白[质]印迹法(Western blot)和实时定量聚合酶链式反应(quantitative real-time polymerase chain reaction,QRT-PCR)技术检测ABCB1、ABCC1、p53、Runx2、ITGB2和ErbB4的表达水平及丝氨酸/苏氨酸蛋白激酶(serine/threonine kinase,AKT)的磷酸化水平变化。结果：经体外诱导获得多柔比星耐药细胞克隆PC9/Adr,且YAP蛋白在其中高表达,利用shRNA得到不同YAP沉默程度的PC9/Adr。YAP沉默后,细胞生长速度降低,细胞对多柔比星的敏感性显著增加,细胞周期被阻滞在G0/G1期,多柔比星诱导的细胞凋亡增多,细胞吸收Rh-123也增多,并与YAP的沉默程度呈正相关。Western blot和QRT-PCR结果显示,YAP沉默后,ABCB1、ABCC1、Runx2、ITGB2和ErbB4蛋白表达下调,而p53的表达上调,AKT的磷酸化水平则下降。结论：YAP过表达与PC9/Adr的耐药性相关,沉默YAP可恢复PC9/Adr对多柔比星的敏感性。这一作用与调节耐药相关基因的表达、促进细胞凋亡有关。     

Induction of p21CIP/WAF-1 and G2 arrest by ionizing irradiation impedes caspase-3-mediated apoptosis in human carcinoma cells

There is an ongoing controversy regarding the relevance of apoptosis induction by ionizing irradiation as compared with other end points including transient or permanent cell cycle arrest of damaged cells. Here, we show that such permanent cell cycle arrest and apoptosis represent two sides of the same coin. MCF-7 cells fail to express procaspase-3, which results in resistance to apoptosis induced by anticancer drugs. Conversely, restoration of procaspase-3 sensitizes MCF-7 cells to chemotherapeutics including epirubicine, etoposide and taxol. In contrast, irradiation does not trigger apoptotic cell death but results in prolonged arrest in the G2 phase of the cell division cycle regardless of procaspase-3 expression. This suggested that the propensity of MCF-7 cells to arrest at the G2 checkpoint results in resistance to apoptosis upon gamma-irradiation. This G2 arrest was associated with upregulation of p21CIP/WAF-1. Inhibition of DNA-damage-induced stress kinases and p21CIP/WAF-1 expression by caffeine abrogated G2 arrest and induced apoptosis of the irradiated cells in a caspase-3-dependent manner. Inhibition of cell cycle progression by adenoviral expression of the cyclin dependent kinase inhibitor p21CIP/WAF-1 prevented apoptosis upon caffeine treatment indicating that cell cycle progression, that is, G2-release, is required for induction of apoptosis. Likewise, cells homozygously deleted for p21CIP/WAF-1 (HCT116 p21-/-) display enhanced irradiation-induced apoptosis via a caspase-3-dependent mechanism. These data indicate that the disruption of G2 checkpoint control overcomes cell cycle arrest and resistance to gamma-irradiation-induced cell death. Thus, DNA damage may trigger a permanent G2 arrest as an initial inactivation step of tumor cells where the phenomenon of apoptosis is hidden unless cell cycle arrest is overcome. The efficient induction of apoptosis upon G2 release thereby depends on the propensity to activate the key executioner caspase-3. This finding is of crucial importance for the understanding of molecular steps underlying the efficacy of ionizing radiation to delete tumor cells.     

miR-144-3p靶向zeb1调控卵巢癌细胞SKOV3的增殖和凋亡

目的:探讨miR-144-3p是否通过靶向E盒锌指结合蛋白1（zeb1）调控卵巢癌细胞SKOV3的增殖和凋亡。方法:qRT-PCR检测miR-144-3p在卵巢癌细胞和正常人卵巢上皮细胞中的表达差异。在卵巢癌细胞SKOV3中转染miR-144-3p mimics,MTT法测定细胞增殖,PI单染法检测细胞周期,Annexin V-FITC/PI双染法检测细胞凋亡,Western blot检测细胞中cyclinD1、p27、C-caspase-3蛋白表达。生物信息学软件预测miR-144-3p的靶基因可能为zeb1,荧光素酶报告系统鉴定其靶向关系。在卵巢癌细胞SKOV3中共转染miR-144-3p mimics、pcDNA3.1-zeb1,利用上述方法测定细胞增殖、周期和凋亡变化。结果:miR-144-3p在卵巢癌细胞中的表达水平低于正常人卵巢上皮细胞。转染miR-144-3p mimics后的卵巢癌细胞SKOV3增殖能力下降,细胞周期被阻滞在G1期,细胞凋亡增多,细胞中cyclinD1蛋白表达减少,p27、C-caspase-3蛋白表达增加。miR-144-3p靶向调控zeb1表达。pcDNA3.1-zeb1可以逆转miR-144-3p mimics对卵巢癌细胞增殖抑制、周期阻滞和凋亡促进作用。结论:miR-144-3p靶向zeb1抑制卵巢癌细胞SKOV3增殖并诱导细胞凋亡。     

Survivin基因的shRNA 干扰对结肠癌SW480 细胞增殖和凋亡的影响*

目的:以携带shRNA 片段的腺病毒为载体,对结肠癌细胞SW480 中Survivin基因的表达进行干扰,研究其对肿瘤细胞中Survivin基因沉默效果及对细胞周期、凋亡和增殖的影响。方法:将构建好的携带Survivin-shRNA 片段腺病毒,体外转染结肠癌细胞株SW480。以EGFP为报告基因,采用流式细胞计数测定不同感染复数（MOI）下的转染效率,选取适当病毒浓度进行下一步实验。通过RT-PCR 和Western blot检测基因沉默后结肠癌细胞内Survivin mRNA和蛋白的表达水平;在Annexin V-FITC 和PI染色后通过流式细胞术检测并分析Survivin基因沉默后细胞周期和凋亡的变化;同时采用噻唑蓝（MTT）法、克隆增殖实验对细胞不同时期增殖活性进行观察,明确对细胞增殖的抑制时效性。结果:腺病毒转染后MOI 值在0～50时,剂量与转染效率成正比,确定最佳MOI 值为50并进行后续实验;shRNA 干扰后细胞内Survivin mRNA和蛋白表达水平降低,较对照细胞组差异有统计学意义（P<0.01）。 流式细胞仪检测结果显示基因沉默后细胞凋亡率升高,与对照组相比差异有统计学意义（P<0.01）。 同时基因沉默后,细胞周期也有明显变化,表现为G1/S 期细胞增多和G2/M期细胞减少,与对照细胞组相比差异有统计学意义（P<0.05）。 MTT 和单克隆平板实验均显示Survivin基因的沉默,对细胞的增殖和生长均具有明显抑制作用（P<0.05）。 结论:采用腺病毒对结肠癌进行靶向Survivin基因的shRNA 干扰,能有效降低目的基因的表达。其介导的Survivin基因的沉默,可以有效的诱导结肠癌细胞凋亡,同时Survivin基因可以通过抑制细胞G1/S 期转化来阻止细胞分裂,抑制细胞生长。      

Survivin反义寡核苷酸对卵巢癌耐药细胞COC1/DDP抑制的实验研究

背景与目的: Survivin是近年发现的一种细胞凋亡抑制基因, 它与卵巢癌细胞的生长及耐药性密切相关,本研究探讨经脂质体介导的 survivin反义寡核苷酸 (Lip-ASODN)对人卵巢癌耐药细胞 COC1/DDP生长、凋亡及细胞周期的影响.方法:将脂质体介导的 survivin-ASODN转染 COC1/DDP细胞;细胞动力学检测、 MTT法观察细胞生长情况; RT-PCR检测 survivin mRNA的表达;通过 Western杂交检测 caspase-3蛋白及活性;流式细胞仪分析细胞凋亡率及细胞周期变化.结果:与空脂质体及 SODN组相比,经 survivin-ASODN作用后的 COC1/DDP细胞的生长受到明显抑制, 72 h的细胞生长抑制率可达( 68.3± 6.2)%( P< 0.05). Survivin mRNA的表达明显下降,而 caspase-3的活性增加,并呈时间依赖性. ASODN组细胞周期发生了明显变化,细胞被阻滞于 G0/G1期,占 79.21%, G2/M及 S期分别为 4.92%、 15.87%,均明显下降;细胞凋亡率为 33.18%,明显高于 SODN组及空脂质体组( P< 0.05).结论: Survivin ASODN能抑制人卵巢癌耐药细胞 COC1/DDP生长,降低 survivin mRNA的表达并诱导 COC1/DDP细胞凋亡.     

RNA干扰PLCE1基因表达对食管鳞癌细胞周期和凋亡的影响

目的：通过siRNA干扰PLCE1基因表达,检测PLCE1对食管鳞癌细胞增殖周期和凋亡的影响,以探讨PLCE1的致癌机制。方法：采用免疫组织化学方法检测食管鳞癌组织和癌旁正常组织中PLCE1蛋白的表达水平;PLCE1特异性siRNA转染食管鳞癌细胞,荧光显微镜观察转染效率;半定量RT-PCR法检测转染后PLCE1沉默效果;流式细胞术检测干扰后细胞周期变化及凋亡情况。结果：PLCE1在食管鳞癌组织的表达高于正常组织（P=0.000）;siRNA转染后PLCE1表达明显减少（P=0.000）;与对照组相比,PLCE1干扰后可致G0/G1期细胞阻滞（P=0.001）,细胞凋亡增多（P=0.000）。结论：PLCE1在食管鳞癌组织中有较高表达;沉默PLCE1后可抑制癌细胞的增殖,促进其凋亡。     

Effects of Sodium Valproate on the Growth of Human Ovarian Cancer Cell Line HO8910

To explore a possible new treatment for human ovarian cancer, we studied the effects of sodium valproateon the growth of the HO8910 human cell line. HO8910 cells were cultured in vitro and treated with differentconcentrations of sodium valproate. Cell proliferation, cell cycling, and apoptosis were measured by flowcytometry, cell morphology under a microscope, and expression levels of WWOX and P27 by Western blottingand RT-PCR. Tumor xenografts were established to determine in vivo effects of sodium valproate. Our resultsshowed that cell proliferation was decreased with increasing concentration of sodium valproate, with features ofcytoplasmic retraction and floating cells. Moreover, cell cycle analysis revealed a higher apoptosis rate and G0/G1 phase in the sodium valproate experimental group than in the control group. In addition, protein expressionlevels of WWOX and P27 were elevated. Importantly, sodium valproate decreased in vivo xenograft tumor burdenand up-regulated WWOX and P27 expression in nude mice. In conclusion, sodium valproate might play a rolein inhibition and control of ovarian cancer cell line HO8910 by inhibiting cell proliferation, interfering with thecell cycle and promoting apoptosis, so that it may be effective in the clinical treatment of ovarian cancer.     

斯钙素1的表达对肺癌细胞A549细胞周期及凋亡的影响

背景与目的：斯钙素1(stanniocalcin l,STC1)在多种癌组织中表达上调,且与癌组织的恶性程度相关,但STC1在肺癌细胞中的分子作用机制尚不明确。本研究旨在探讨STC1的表达对肺癌细胞A549细胞周期及凋亡的影响。方法：构建STC1基因RNA干扰的肺癌细胞株A549-STC1-siRNA和对照细胞株A549-Vector,用实时荧光定量聚合酶链反应(real-time fluorescent quantitative polymerase chain reaction,RTFQ-PCR)和蛋白[质]印迹法(Western blot)检测A549-Vector及A549-STC1-siRNA细胞株的细胞周期蛋白基因CyclinA、CyclinB1、CyclinD1、CyclinE、CDK2、CDK4,凋亡抑制基因Bcl-2、Bcl-xl及凋亡诱导基因Caspase-3、Bax、Bak、Bid的表达水平,用流式细胞术检测STC1基因对A549细胞周期的影响,用原位末端标记(terminal deoxynucleotidyl transferase-mediated nick-end labeling,TUNEL)检测STC1基因对A549细胞凋亡的影响。结果：与A549-Vector细胞相比,A549-STC1-siRNA的细胞周期蛋白基因CyclinA、CyclinB1、CyclinD1、CyclinE、CDK2和CDK4在转录和蛋白表达水平上均显著减少(P<0.05),G0/G1期细胞比例明显增加,S期及G2/M期细胞比例降低(P<0.05),细胞周期受阻;A549-STC1-siRNA的凋亡抑制基因Bcl-2和Bcl-xl表达下调(P<0.05),而凋亡诱导基因Caspase-3、Bax、Bak及Bid显著上调(P<0.05);TUNEL实验表明,A549-STC1-siRNA细胞的凋亡率明显增加。结论：STC1基因的低表达可阻滞肺癌细胞A549的细胞周期,抑制细胞增殖,同时促进细胞凋亡。     

葡萄糖对卵巢癌细胞生长增殖影响体外研究

目的 葡萄糖是维持肿瘤细胞存活的重要能量来源,有关研究表明低糖与无糖条件有可能抑制肿瘤细胞生长,成为潜在的肿瘤治疗方式.本研究通过给予不同浓度葡萄糖刺激SKOV3与A2780卵巢癌细胞系,分析其细胞增殖、细胞周期与细胞凋亡的改变,探讨葡萄糖对卵巢癌细胞生长增殖的影响.方法 在体外配制含不同葡萄糖浓度(0、2.5、 5.5、 25.0 mmol/L)的培养基,分别模拟无糖、低血糖、正常血糖及高血糖水平的体内环境,观察不同葡萄糖浓度对卵巢癌细胞的增殖、凋亡与细胞周期的影响.结果 高糖促进卵巢癌细胞SKOV3和A2780的增殖,干预48 h后,增殖幅度约为无糖组的1.841~1.942倍;低糖与无糖条件诱导卵巢癌细胞发生G1期阻滞,与高糖组相比,SKOV3细胞G1期比例以(40.699±1.131)%增加至(58.619±2.643)%,A2780细胞以(46.348±2.150)%增加至(54.770±2.475)%;低糖与无糖条件亦诱导细胞凋亡,SKOV3与A2780细胞无糖组中凋亡细胞比例分别为(14.015±0.827)%和(12.930±1.127)%.结论 本研究通过探讨葡萄糖对卵巢癌细胞生长与增殖的影响,证明低糖与无糖条件诱导卵巢癌细胞发生G1期阻滞、细胞凋亡并抑制其生长增殖.若进一步给予相应葡萄糖抑制剂干预,可能为卵巢癌的临床治疗提供新思路.