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纳米脂质体槲皮素对Eca-9706细胞凋亡及相关蛋白表达的影响 被引量:1
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作者 裴迎新 赵焕焕 +3 位作者 李金萍 郑乃刚 宫璀璀 吴景兰 《郑州大学学报(医学版)》 CAS 北大核心 2010年第6期893-897,共5页
目的:探讨纳米脂质体槲皮素(nLQ)诱导人食管癌Eca-9706细胞逆转化及凋亡的效应及其机制。方法:采用旋转蒸发法制备以氯仿和DMSO为溶剂的脂质体槲皮素,将其超声波破碎并经80nm滤膜过滤制成nLQ,不同浓度(10、20、40、80和100μmol/L)作用... 目的:探讨纳米脂质体槲皮素(nLQ)诱导人食管癌Eca-9706细胞逆转化及凋亡的效应及其机制。方法:采用旋转蒸发法制备以氯仿和DMSO为溶剂的脂质体槲皮素,将其超声波破碎并经80nm滤膜过滤制成nLQ,不同浓度(10、20、40、80和100μmol/L)作用于Eca-9706细胞,用MTT法检测各组Eca-9706细胞的生长抑制率。分别取Eca-9706细胞,分为nLQ组(加40μmol/LnLQ)和对照组。TUNEL法检测2组细胞凋亡率;免疫细胞化学/免疫印迹法检测2组处理48h后Eca-9706细胞CyclinD1、PTEN、c-Met、VEGF、组蛋白去乙酰化酶(HDAC)1及NF-κB表达的变化。结果:各组Eca-9706细胞生长抑制率(F分别为128.041、142.683和231.054,P<0.001)和2组细胞凋亡率(t=94.770,P<0.001)比较,差异均有统计学意义。PTEN免疫反应性和印记信号增强(t分别为5.352和4.308,P均<0.05),Cyclin D1、c-Met、VEGF、HDAC1和NF-κB的免疫反应性减弱(t分别为4.006、9.184、13.853、4.698和3.575,P均<0.05),其印迹信号亦减弱(t分别为3.827、6.399、7.868、4.695和3.406,P均<0.05);以上各细胞蛋白的免疫细胞和免疫印迹信号之间呈正相关(rs分别为0.952、0.915、0.927、0.842、0.879和0.855,P均<0.05)。结论:nLQ可抑制Eca-9706细胞生长及增殖,逆转Eca-9706细胞PTEN的低表达和c-Met及VEGF的高表达,并通过抑制HDAC1和NF-κB及激活PTEN表达的HDAC抑制信号途径而诱导细胞凋亡。 展开更多
关键词 食管肿瘤 纳米脂质体槲皮素 组蛋白去乙酰化酶抑制物 凋亡 eca-9706细胞
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Dual effects of 8-Br-cAMP on differentiation and apoptosis of human esophageal cancer cell line Eca-109 被引量:3
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作者 Hong-Mei Wang Nai-Gang Zheng +2 位作者 Jing-Lan Wu Cui-Cui Gong Yi-Ling Wang 《World Journal of Gastroenterology》 SCIE CAS CSCD 2005年第41期6538-6542,共5页
AIM: To investigate the effects of 8-Br-cAMP on differentiation and apoptosis of human esophageal cancer cell line Eca-109, and the related gene expression.METHODS: The cultured Eca-109 cells were divided into four gr... AIM: To investigate the effects of 8-Br-cAMP on differentiation and apoptosis of human esophageal cancer cell line Eca-109, and the related gene expression.METHODS: The cultured Eca-109 cells were divided into four groups: E1 group (co-cultured with 8-Br-cAMP for 24 h); E2 group (co-cultured with 8-Br-cAMP for 48 h); C1 group (treated without 8-Br-cAMP for 24 h); and C2 group (treated without 8-Br-cAMP for 48 h). The same concentration of cell suspension of each group was dropped separately onto the slides and nitrocellulose membranes (NCM). The biotin-labeled cDNA probes for c-myc, wild-type (wt) p53, bcl-2 and iNOS were prepared for in situ hybridization. The expressions of epidermal growth factor receptor (EGFR), p38 kinase, FAS, FasL and caspase-3 were detected using immunocytochemistry, and the NOS activity and the ratio of differentiated cells/proliferating cells were examined by cytochemistry. Immunocytochemistry, cytochemistry,and in situ hybridization were separately carried out on both slides and NCM specimens for each group. In addition, TUNEL was used to detect the cell apoptosis rate in each group.RESULTS: The apoptotic rate of E2 group was significantly higher compared to E1 group, while there was no difference in the ratio of differentiated cells/ proliferating cells between E1 and E2 groups. The signals of wt p53 and iNOS were markedly stronger, while the signals of c-myc and EGFR were obviously weaker in E1 group than those in C1 group (P<0.05). Moreover, the signals of wt p53, iNOS, p38 kinase, caspase-3 and NOS activity were significantly stronger, whereas, the signals of bcl-2, c-myc and Fas/FasL were markedly weaker in E2 group than those in C2 group (P<0.05). CONCLUSION: The differentiation and apoptosis of human esophageal cancer cell Eca-109 can be induced after 24- and 48-h treatment with 8-BrcAMP, respectively. Upregulation of wt p53, iNOS and downregulation of c-myc may be associated with differentiation and apoptosis of Eca-109 cells.Furthermore, upregulation of FasL, p38 kinase and caspase-3 as well as downregulation of bcl-2, and Fas may be involved in the apoptosis of Eca-109 cells. 展开更多
关键词 DIFFERENTIATION APOPTOSIS Gene expression 8-BR-CAMP eca-109 cell line
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Expression of heparanase mRNA in anti-sense oligonucleotide-transfected human esophageal cancer EC9706 cells 被引量:4
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作者 Kui-Sheng Chen Lan Zhang +4 位作者 Lin Tang Yun-Han Zhang Dong-Ling Gao Liang Yan Lei Zhang 《World Journal of Gastroenterology》 SCIE CAS CSCD 2005年第31期4916-4917,共2页
AIM: To investigate the effed3 of anti-sense oligonucleotides (ASODNs) on mRNA expression of heparanase in human esophageal cancer EC9706 cells. METHODS: One non-sense oligonucleotide (N-ODN) and five ASODNs aga... AIM: To investigate the effed3 of anti-sense oligonucleotides (ASODNs) on mRNA expression of heparanase in human esophageal cancer EC9706 cells. METHODS: One non-sense oligonucleotide (N-ODN) and five ASODNs against different heparanase mRNA sites were transfected into EC9706 cells, then the expression of heparanase mRNA in EC9706 cells was studied by in situ hybridization. RESULTS: The expression of heparanase mRNA could be inhibited by ASODNs.There was no significant difference among five ASODNs (P〉0.05), but there was a significant difference between ASODNs and N-ODN or non-transfected group (ASODNI: 2.25±0.25, ASODN2: 2.21±0.23, ASODN3: 2.23±0.23, ASODN4:2.25±0.24 vs N-ODN: 3.47±2.80 or non- transfected group: 3.51±2.93 respectively, P〈0.05). CONCLUSION: The expression of heparanase mRNA in EC9706 cells can be inhibited by ASODNs in vivo, and heparanase ASODNs can inhibit metastasis of esophageal squamous cell carcinoma or other tumors by inhibiting the expression of heparanase. 展开更多
关键词 Esophageal cancer EC9706 cells HEPARANASE Anti-sense oligonucleotides In situ hybridization
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Combined Antitumor Effect of Ursolic Acid And 5-Fluorouracil on Human Esophageal Carcinoma Cell Eca-109 In Vitro 被引量:3
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作者 Guo-qing Chen Zhen-wei Yao +3 位作者 Wei-ping Zheng Li Chen Hong Duan Yi Shen 《Chinese Journal of Cancer Research》 SCIE CAS CSCD 2010年第1期62-67,共6页
Objective: To study the combined antitumor effect and possible mechanisms of ursolic acid with 5-fluorouracil (5-FU) on human esophageal carcinoma cell Eca-109 in vitro. Methods: Eca-109 cells were treated with ur... Objective: To study the combined antitumor effect and possible mechanisms of ursolic acid with 5-fluorouracil (5-FU) on human esophageal carcinoma cell Eca-109 in vitro. Methods: Eca-109 cells were treated with ursolic acid (10-50 μmol/L) and/or 5-fluorouracil (48.0-768.8 μmol/L) for 48 h in vitro. And then cell proliferation was determined by MTT assay. Cell cycle and apoptosis rate were analyzed by flow cytometry (FCM). The morphological changes of apoptosis were observed by fluorescent microscopy. At last the expression of P27kipl, bcl-2 and bax were detected by western blot. Results: Results: In comparison with single agent treatment, the combination of ursolic acid and 5-fluorouracil produced greater efficacy in growth inhibition, cell cycle arrest at G0/G1 phase, and apoptosis induction (P〈0.05). Western blot analysis showed that the combination use of ursolic acid and 5-fluorouracil suppressed the expression of bcl-2 and increased the expressions of bax and P27kip1. Conclusion: Ursolic acid combined with 5-fluorouracil showed adjuvant antiproliferative effects on human esophageal carcinoma cell Eca-109 in vitro, which mainly due to the induction of cell cycle arrest as well as apoptosis. 展开更多
关键词 Ursolic acid 5-FLUOROURACIL eca-109 cells Apoptosis cell cycle P27KIP1
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丙型肝炎病毒特异性核酶对HepG2.9706细胞HCV5′NCR基因表达的抑制作用 被引量:3
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作者 王小红 王升启 +2 位作者 管伟 刘立忠 毛秉智 《中国生物化学与分子生物学报》 CAS CSCD 北大核心 2001年第3期391-394,共4页
为探讨锤头型核酶抗丙型肝炎病毒的作用 ,根据HCV 5′NCR及翻译起始区的二级结构 ,设计及合成了 1个锤头型核酶RzA .将其插入pCI neo表达载体的多克隆位点 ,构建了表达RzA的质粒pHCV RzA .采用转基因细胞模型HepG2 970 6细胞 ,评价了pH... 为探讨锤头型核酶抗丙型肝炎病毒的作用 ,根据HCV 5′NCR及翻译起始区的二级结构 ,设计及合成了 1个锤头型核酶RzA .将其插入pCI neo表达载体的多克隆位点 ,构建了表达RzA的质粒pHCV RzA .采用转基因细胞模型HepG2 970 6细胞 ,评价了pHCV RzA质粒对HCV 5′NCR调控荧光素酶表达的抑制活性 .结果表明 ,在HepG2 970 6细胞中 ,pHCV RzA以序列特异性、剂量依赖性方式抑制荧光素酶基因的表达 ,抑制率达 80 % ,提示核酶有可能作为HCV感染基因治疗的一种有效途径 . 展开更多
关键词 丙型肝炎病毒 锤头型核酶 HepG2.9706细胞 基因表达 抑制作用
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姜黄素对人食管癌Ec-9706细胞凋亡的影响机制 被引量:3
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作者 赵惠玲 李慧 左连富 《第四军医大学学报》 北大核心 2008年第18期1655-1657,共3页
目的:观察姜黄素(curcumin)对人食管癌Ec-9706细胞凋亡作用及凋亡抑制蛋白livin,促凋亡蛋白Smac和caspase-3蛋白表达的影响,探索其分子机制.方法:应用40~160μmol/L姜黄素处理Ec-9706细胞12~48h后,采用四甲基偶氮唑蓝法(MTT)检测... 目的:观察姜黄素(curcumin)对人食管癌Ec-9706细胞凋亡作用及凋亡抑制蛋白livin,促凋亡蛋白Smac和caspase-3蛋白表达的影响,探索其分子机制.方法:应用40~160μmol/L姜黄素处理Ec-9706细胞12~48h后,采用四甲基偶氮唑蓝法(MTT)检测细胞增殖抑制率;流式细胞术(FCM)检测Ec-9706细胞凋亡率:免疫蛋白印迹技术(WesternBlot)检测livin,Smac及caspase-3蛋白的表达.结果:姜黄素作用后Ec-9706细胞生长明显减慢,抑制率9.3%~73.2%(P〈0.01),凋亡率为6.0%~45.2%(P〈0.01),并呈良好的时间-剂量效应关系.药物作用后,Smac,caspase-3蛋白表达升高,livin蛋白表达下调(P〈0.01).结论:姜黄素能明显抑制Ec-9706细胞的增殖,诱导其凋亡.其机制可能与抑制livin蛋白表达,同时促进Smac,caspase-3表达有关. 展开更多
关键词 姜黄素 Ec-9706细胞 细胞凋亡 LIVIN SMAC 半胱氨酸天冬氨酸蛋白酶3
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番茄红素对EC-9706细胞增殖及细胞周期的影响 被引量:5
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作者 何龙 《中国药师》 CAS 2010年第3期362-364,共3页
目的:研究番茄红素对人食管癌细胞EC-9706的增殖及细胞周期的影响。方法:MTT法检测番茄红素对EC-9706增殖的抑制作用,采用流式细胞仪检测同步化的细胞经番茄红素作用后细胞周期和凋亡的变化。结果:番茄红素能够明显抑制EC-9706细胞的生... 目的:研究番茄红素对人食管癌细胞EC-9706的增殖及细胞周期的影响。方法:MTT法检测番茄红素对EC-9706增殖的抑制作用,采用流式细胞仪检测同步化的细胞经番茄红素作用后细胞周期和凋亡的变化。结果:番茄红素能够明显抑制EC-9706细胞的生长,呈现时间和剂量依赖性;且诱导细胞凋亡;并阻滞细胞周期于S期。结论:番茄红素可抑制EC-9706细胞的增殖,其机制可能为诱导细胞凋亡和改变细胞周期。 展开更多
关键词 番茄红素 EC-9706 增殖 细胞凋亡 细胞周期
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N-cadherin knock-down decreases invasiveness of esophageal squamous cell carcinoma in vitro 被引量:3
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作者 Ke Li Wei He Na Lin Xin Wang Qing-Xia Fan 《World Journal of Gastroenterology》 SCIE CAS CSCD 2009年第6期697-704,共8页
AIM: To examine the expressions of N-cadherin and E-cadherin in specimens of 62 normal esophageal epithela, 31 adjacent atypical hyperplastic epithelia and 62 esophageal squamous cell carcinomas (ESCCs), and to inv... AIM: To examine the expressions of N-cadherin and E-cadherin in specimens of 62 normal esophageal epithela, 31 adjacent atypical hyperplastic epithelia and 62 esophageal squamous cell carcinomas (ESCCs), and to investigate the roles of N-cadherin in the invasiveness of ESCC cell line EC9706 transfected by N-cadherin shRNA.METHODS: PV immunohistochemistry was used to detect the expression pattern of N-cadherin and E-cadherin in specimens of 62 normal esophageal epithelia, 31 adjacent atypical hyperplastic epithelia and 62 ESCCs. The invasiveness of ESCC line EC9706 was determined by transwell assay after EC9706 was transfected by N-cadherin shRNA.RESULTS: The positive rotes of N-cadherin decreased in the carcinoma, adjacent atypical hyperplastic and normal esophageal tissues (75.8%, 61.3% and 29.0%, P 〈 0.05), respectively, while those of E-cadherin increased (40.3%, 71.0% and 95.2%, P 〈 0.05). The increased expression of N-cadherin and decreased expression of E-cadherin were related to invasion, differentiation, and lymph node metastasis (P 〈 0.05). The expression level of N-cadherin decreased in the N-cadherin knocked down cells, and the invasiveness of those cells decreased significantly as well. The number of cells which crossed the basement membrane filter decreased from 123.40 ± 8.23 to 49.60 ±6.80 (P 〈 0.05).CONCLUSION: E-cadherin and N-cadherin expression is correlated with the invasion and aggravation of ESCC. The down-regulation of N-cadherin lowers the invasiveness of EC9706 cell line. 展开更多
关键词 Esophageal squamous cell carcinoma RNAi N-CADHERIN EC9706
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靶向ESCCAL_1基因的siRNA纳米复合物的制备及体外对食管癌EC-9706细胞的抑制作用 被引量:2
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作者 韩鹏黎 孙蕾 +3 位作者 吕朋举 龚芬芬 夏天 曹巍 《中国药理学通报》 CAS CSCD 北大核心 2017年第12期1749-1753,共5页
目的制备装载靶向ESCCAL_1基因的siRNA纳米复合物,并考察其体外对食管癌EC-9706细胞增殖的抑制作用及对ESCCAL_1表达的影响。方法采用溶胶-凝胶法制备MSNP,通过表面修饰阳离子聚合物聚乙烯亚胺(polyethylenimine,PEI)使其带有正电荷,能... 目的制备装载靶向ESCCAL_1基因的siRNA纳米复合物,并考察其体外对食管癌EC-9706细胞增殖的抑制作用及对ESCCAL_1表达的影响。方法采用溶胶-凝胶法制备MSNP,通过表面修饰阳离子聚合物聚乙烯亚胺(polyethylenimine,PEI)使其带有正电荷,能够与带负电的ESCCAL_1siRNA相结合;纳米粒度仪、透射电镜测定纳米复合物的粒径和电位;凝胶电泳测定其对siRNA的包封率;MTT法检测纳米复合物体外对EC-9706细胞增殖的抑制作用;荧光显微镜观察纳米复合物中siRNA被EC-9706细胞摄取的情况;RT-PCR法检测其对EC-9706细胞中ESCCAL_1 LncRNA表达的影响。结果纳米粒度仪、透射电镜测得所合成的MSNP表面介孔直径约3~5 nm,分散性较好,尺寸较均一;能明显抑制EC-9706细胞的增殖(P<0.05),72h抑制率为(54.93±2.6)%;其装载的siRNA能被EC-9706细胞有效摄取;能有效沉默EC-9706细胞中ESCCAL_1,沉默效率为69.5%。结论采用该方法可制备包封率较高的肿瘤靶向纳米复合物,其介导的siRNA能有效抑制食管癌EC-9706细胞的体外增殖和沉默EC-9706细胞中ESCCAL_1表达。 展开更多
关键词 食管鳞状细胞癌特异相关LncRNA转录物1 SIRNA 肿瘤靶向性 基因治疗 食管癌 EC-9706细胞
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Anti-cancer activity of Tonglian decoction against esophageal cancer cell proliferation through regulation of the cell cycle and PI3K/Akt signaling pathway
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作者 Yongsen Jia Lijuan Qin +4 位作者 Chunhua Jiang Qing Lin Fuling Tian Huijuan Cao Xin Yan 《Journal of Traditional Chinese Medical Sciences》 2015年第2期120-126,共7页
Objective:The purpose of this study was to observe the anti-cancer activity of Tonglian decoction(TD)on esophageal cancer(EC)cells in vitro,and to elucidate the related molecular mechanisms in the cell cycle and PI3K/... Objective:The purpose of this study was to observe the anti-cancer activity of Tonglian decoction(TD)on esophageal cancer(EC)cells in vitro,and to elucidate the related molecular mechanisms in the cell cycle and PI3K/Akt signaling pathway.Methods:EC9706 cells were cultured in RPMI 1640 medium supplemented with 10%calf serum at 37C in a 5%CO2 incubator.The cells were treated with rat serum containing TD or the serum of rats administered Xiaoaiping as a positive control drug.Cell proliferation was assessed by methylthiazolyldiphenyl-tetrazolium bromide assays.Cell morphology was observed under a microscope.The cell cycle was examined by flow cytometry.Protein expression in the PI3K/Akt signaling pathway was measured by western blotting.Results:TD mainly inhibited cell proliferation.Concentrations of 50%cell inhibition by rat serum containing TD or Xiaoaiping were 73.6 and 153.8 mL/mL,respectively.TD also influenced cell morphology characterized by small shrunken cells.Cell colonies became small and the cell proliferation rate was slower.In cell cycle analysis,the percentage of cells in S phase was decreased significantly by TD and Xiaoaiping compared with the blank control group(P<.05).Western blotting showed that serum containing TD strongly downregulated EGFR,PI3K,Akt,p-Akt,and mTOR expression compared with the blank control group(P<.05).Conclusion:TD could inhibit EC9706 carcinoma cell proliferation by blocking the cell cycle progression in S phase.The possible mechanism was inhibition of multiple targets in the PI3K/Akt signaling pathway by TD. 展开更多
关键词 Tonglian decoction Esophageal cancer EC9706 cells cell cycle PI3K/AKT
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Expression of Vascular Endothelial Growth Factor C and Its Clinical Significance in Human Esophageal Squamous Cell Carcinoma
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作者 Hongxin Zhang Lan Zhang +3 位作者 Kuisheng Chen Dongling Gao Fucheng He Yunhan Zhang 《Chinese Journal of Clinical Oncology》 CSCD 2007年第2期83-88,共6页
OBJECTIVE To examine the expression of vascular endothelial growth factor C (VEGF-C) in human esophageal squamous cell carcinoma (ESCC), and to clarify its role in lymphatic metastasis in ESCC patients.METHODS Eso... OBJECTIVE To examine the expression of vascular endothelial growth factor C (VEGF-C) in human esophageal squamous cell carcinoma (ESCC), and to clarify its role in lymphatic metastasis in ESCC patients.METHODS Esophageal carcinoma EC9706 cells and samples from 49 patients with primary ESCC were investigated by using S-P immunohistochemistry (IHC), the semi-quantitative reverse transcriptase-polymerase chain reaction (RT-PCR) and in situ hybridization (ISH) methods for VEGF-C expression. RESULTS VEGF-C positive expression was found in EC9706 cells through IHC, ISH and RT-PCR. Positive IHC for VEGF-C was observed in 36 of 49 cases of ESCC. There was a significant difference between the expression of VEGF-C in a lymph-node-positive group compared to a node-negative group (χ^2=4.7, P〈0.05). Positive ISH for VEGF-C mRNA was observed in 23 of 49 cases of ESCC. There was a significant difference between the expression of VEGF-C in the lymph-node-positive group and node-negative group (χ^2=31.3, P〈0.01). The expression of VEGF-C was significantly higher in the lymph-node-positive group compared to the node-negative group. Of 49 ESCC tissues, RT-PCR for VEGF-C mRNA was observed positively in 29 cases. There was a significant difference between the expression of VEGF-C in the lymph-node-positive group and node-negative group (χ^2=23.3, P〈0.01). The expression of VEGF-C was significantly higher in the lymphnode-positive group compared to the node-negative group. Expressions of VEGF-C were not significantly associated with age, gender, and pathological grade. There was a relationship between VEGF-C mRNA expressions by RT-PCR and ISH (χ^2=18.5, P〈0.01) in ESCC cases, but with no significant difference between the two methods. CONCLUSION VEGF-C expression may induce lymphangiogenesis in human ESCC. There was a close correlation between VEGF-C expression and lymph node metastasis. VEGF-C can serve as a useful prognostic factor for ESCC patients. 展开更多
关键词 esophageal squamous cell carcinoma(ESCC) esophageal cancer EC9706 cells vascular endothelial growth factor C (VEGF-C) lymphatic metastasis immunohistochemistry (IHC) RT-PCR in situ hybridization (ISH).
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食管鳞癌的肿瘤干细胞标志 被引量:2
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作者 郑乃刚 阎爱华 +3 位作者 吴景兰 李金萍 裴迎新 董子明 《郑州大学学报(医学版)》 CAS 北大核心 2010年第1期27-30,共4页
目的:探讨食管鳞癌组织和其细胞系的肿瘤干细胞(CSC)标志。方法:应用免疫酶或免疫荧光技术检测20例食管鳞癌组织和细胞(Eca-109和EC9706)中CD133、CD44以及多药耐药基因1(MDR1)的表达和定位。结果:食管鳞癌细胞中CD133和MDR1一致强阳性... 目的:探讨食管鳞癌组织和其细胞系的肿瘤干细胞(CSC)标志。方法:应用免疫酶或免疫荧光技术检测20例食管鳞癌组织和细胞(Eca-109和EC9706)中CD133、CD44以及多药耐药基因1(MDR1)的表达和定位。结果:食管鳞癌细胞中CD133和MDR1一致强阳性的细胞占30%~43%,CD133和CD44一致强阳性的细胞约占40%。CD133强阳性小细胞占癌细胞的8%,癌组织中约为4%。CD133强阳性小细胞位于鳞癌上皮的基底层、癌珠周缘或癌灶内;CD44强阳性细胞约占40%,其中包含2个亚群:少数较小CD44阳性的细胞亚群定位于鳞癌上皮的基底层、癌珠周缘或癌灶内;较大CD44强阳性细胞的亚群主要定位于鳞癌上皮棘细胞层及癌灶中。结论:CD133强阳性小细胞和CD44强阳性细胞可能是CSC的标志。 展开更多
关键词 肿瘤干细胞 食管鳞癌 eca-109和EC9706细胞 CD133 CD44
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脂质体槲皮素对食管癌细胞增殖及蛋白表达的影响及机制 被引量:1
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作者 裴迎新 王莎莎 高涵昌 《山东医药》 CAS 北大核心 2009年第7期19-22,共4页
目的比较不同脂质体槲皮素对人食管癌Eca109和Eca9706细胞增殖的作用,并初步探讨其作用机制。方法采用旋转蒸发法制备氯仿和甲醇溶解类脂物质的脂质体槲皮素LQ1和按同比例的氯仿和DMSO作为溶剂的脂质体槲皮素LQ2,用DMSO直接溶解槲皮素... 目的比较不同脂质体槲皮素对人食管癌Eca109和Eca9706细胞增殖的作用,并初步探讨其作用机制。方法采用旋转蒸发法制备氯仿和甲醇溶解类脂物质的脂质体槲皮素LQ1和按同比例的氯仿和DMSO作为溶剂的脂质体槲皮素LQ2,用DMSO直接溶解槲皮素制备非脂质体槲皮素nLQ,分别作用于Eca109和Eca9706细胞(分别作为LQ1、LQ2及nLQ组),同时设立对照组。MTT实验检测各组细胞抑制率,免疫组织化学染色和免疫印迹法检测磷酸酶基因(PTEN)和细胞周期素D1(Cyclin D1)蛋白表达。结果各组细胞增殖的抑制效应、上调PTEN和下调Cyclin D1蛋白表达的效应呈现同一趋势,即LQ2组>LQ1组>nLQ组>对照组,P<0.05。结论脂质体槲皮素对食管癌细胞增殖有抑制作用,LQ2的抑制率高于LQ1;上调PTEN表达、下调Cyclin D1表达可能为其作用机制之一。 展开更多
关键词 磷酸酶基因 细胞周期素D1 脂质体槲皮素 eca-109细胞系 eca-9706细胞系
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纯化雄黄体内外抗肿瘤作用 被引量:7
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作者 王娟锐 王建刚 李艳 《中国新药杂志》 CAS CSCD 北大核心 2008年第12期1030-1033,共4页
目的:研究纯化雄黄的体内外抗肿瘤作用。方法:建立移植瘤小鼠S180肉瘤模型,观察纯化雄黄高、中、低剂量(2,1,0.5 g.kg-1,灌胃,qd)连续给药14 d对荷瘤小鼠的瘤重、胸腺指数和脾脏指数的影响,实验同时设溶媒对照组和环磷酰胺阳性对照组(CT... 目的:研究纯化雄黄的体内外抗肿瘤作用。方法:建立移植瘤小鼠S180肉瘤模型,观察纯化雄黄高、中、低剂量(2,1,0.5 g.kg-1,灌胃,qd)连续给药14 d对荷瘤小鼠的瘤重、胸腺指数和脾脏指数的影响,实验同时设溶媒对照组和环磷酰胺阳性对照组(CTX,100 mg.kg-1,腹腔注射1次)。另外制备荷瘤小鼠含药血清和正常大鼠的含药灭活血清,通过血清药理学研究方法观察含药血清对人食管癌细胞株Ec9706的体外增殖抑制作用。结果:纯化雄黄可抑制小鼠S180肉瘤的生长,高、中、低剂量组抑瘤率分别为39.1%,29.2%和21.1%,对胸腺指数和脾脏指数无明显影响;荷瘤小鼠含药血清及正常大鼠的含药灭活血清均可抑制人食管癌细胞株Ec9706生长,且在48 h抑制作用达到最强,抑制率分别为42.9%和27.7%。结论:纯化雄黄在体内和体外均有明显的肿瘤抑制作用。 展开更多
关键词 纯化雄黄 S180肉瘤 血清药理学 人食管癌细胞株Ec9706
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HO-1基因真核表达载体pcDNA3.1-hHO-1的构建及表达
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作者 王媛 金国平 +1 位作者 马惠敏 单杰 《河南医学研究》 CAS 2009年第1期19-22,共4页
目的:构建人HO-1真核表达载体pcDNA3.1-hHO-1并检测其表达。方法:利用分子生物学技术,将hHO-1基因与质粒pcDNA3.1连接,构成重组质粒并用RT-PCR及Western blotting方法检测重组载体在Eca-9706细胞中的表达情况,最终确定重组载体是否构建... 目的:构建人HO-1真核表达载体pcDNA3.1-hHO-1并检测其表达。方法:利用分子生物学技术,将hHO-1基因与质粒pcDNA3.1连接,构成重组质粒并用RT-PCR及Western blotting方法检测重组载体在Eca-9706细胞中的表达情况,最终确定重组载体是否构建成功。结果:用HindⅢ和BamHⅠ双酶切,RT-PCR检测,Western blotting检测证明hHO-1成功克隆入表达载体pcDNA3.1中。结论:本部分实验成功构建了能够在细胞内大量表达HO-1基因产物的真核表达载体pcDNA3.1-hHO-1,为进一步实验奠定基础。 展开更多
关键词 血红素加氧酶-1 eca-9706细胞 pcDNA3.1质粒
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脂质体槲皮素对Eca109/9706细胞增殖及血管内皮生长因子和c-met表达的影响
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作者 裴迎新 杜晓燕 +2 位作者 李金萍 高涵昌 王莎莎 《卫生研究》 CAS CSCD 北大核心 2009年第5期599-602,共4页
目的检测不同脂质体槲皮素对食管癌Eca109/9706细胞增殖及c-met和血管内皮生长因子(VEGF)表达的影响。方法MTT实验检测脂质体槲皮素和非脂质体槲皮素对Eca109/9706细胞生长的抑制率;免疫组织化学染色及免疫印迹检测脂质体槲皮素处理48h... 目的检测不同脂质体槲皮素对食管癌Eca109/9706细胞增殖及c-met和血管内皮生长因子(VEGF)表达的影响。方法MTT实验检测脂质体槲皮素和非脂质体槲皮素对Eca109/9706细胞生长的抑制率;免疫组织化学染色及免疫印迹检测脂质体槲皮素处理48h后Eca109/9706细胞中c-met,VEGF表达的改变。结果MTT检测表明,Eca109/9706的细胞生长抑制率依次为脂质体槲皮素(LQ2)组>脂质体槲皮素(LQ1)组>非脂质体槲皮素(nLQ)组>对照组(P<0.05);在人食管癌Eca109/9706细胞中,c-met及VEGF的免疫组织化学图像扫描灰度均值从高至低依次为:对照组>nLQ组>LQ1组>LQ2组(P<0.05)。c-met和VEGF的免疫印迹信号数值为各主带扫描灰度均值与各β-actin扫描灰度均值的比值,从高至低依次为:对照组>nLQ组>LQ1组>LQ2组(P<0.05)。结论脂质体槲皮素可抑制Eca109/9706细胞的增殖,其作用可能与降低c-met及VEGF的高表达有关。 展开更多
关键词 脂质体槲皮素 ECA 109/9706 细胞增殖 血管内皮生长因子 C-MET 食管肿瘤
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大豆皂甙Bb对食管癌细胞凋亡的影响及其机制研究 被引量:7
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作者 裴迎新 赵焕焕 +1 位作者 杜晓燕 李金萍 《卫生研究》 CAS CSCD 北大核心 2010年第4期444-446,共3页
目的探讨大豆皂甙Bb(SSBb)抑制人食管癌细胞Eca-9706生长、诱导凋亡的效应及其机制。方法用噻唑蓝比色法测不同浓度SSBb对Eca-9706细胞生长的抑制率;缺口末端标记法检测Eca-9706细胞的凋亡率;免疫组织化学染色法和免疫印迹法检测人食管... 目的探讨大豆皂甙Bb(SSBb)抑制人食管癌细胞Eca-9706生长、诱导凋亡的效应及其机制。方法用噻唑蓝比色法测不同浓度SSBb对Eca-9706细胞生长的抑制率;缺口末端标记法检测Eca-9706细胞的凋亡率;免疫组织化学染色法和免疫印迹法检测人食管癌Eca-9706细胞在SSBb作用下c-met、VEGF、cyclinD1、NF-κB、PTEN、HDAC1、caspase3蛋白表达的变化。结果与对照组相比,SSBb处理的Eca-9706细胞的生长抑制率、凋亡率增加,caspase3、PTEN的免疫反应性和印迹信号增强,cyclinD1、c-met、VEGF、NF-κB、HDAC1的免疫反应性和印迹信号减弱(P<0.01)。结论 SSBb对人食管癌Eca-9706细胞增殖有抑制作用,可降低Eca-9706细胞中的c-met和VEGF恶性标志的过高表达,并通过抑制HDAC1、NF-κB,激活PTEN和caspase3信号传导途径诱导食管癌细胞凋亡。 展开更多
关键词 大豆皂甙Bb 细胞凋亡 eca-9706细胞系 食管癌
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