转染血管内皮生长因子C反义寡核苷酸对子宫颈癌Hela细胞增生和凋亡的影响

目的体外研究脂质体介导转染血管内皮生长因子C（VEGF—C）反义寡核苷酸（VEGF—C,ASODN）对子宫颈癌Hela细胞增生和凋亡的影响。方法实验组将VEGF—CASODN（优化筛选）用脂质体导人Hela细胞,设正义（SODN）和空白对照组进行比较。用荧光显微镜观察转染率,MTT比色法检测细胞增生,流式细胞术检测细胞凋亡及细胞周期变化,RT—PCR、Western blotting法检测VEGF—C mRNA和蛋白的表达。结果经脂质体介导可成功将VEGF—C反义核酸转染至子宫颈癌Hela细胞;细胞的增生受到明显抑制,G2／M期细胞比例增多,转染作用48h时凋亡率最高,达（19．39±1．81）％;VEGF—C在mRNA和蛋白水平的表达均明显减少,与对照组比较差异有统计学意义（P〈0．05）。结论体外转染VEGF—CASODN可在mRNA和蛋白水平下调Hela细胞VEGF—C的表达,阻滞并同步化细胞周期,抑制细胞增生,诱导细胞凋亡。     

转染血管内皮生长因子C反义寡核苷酸对子宫颈癌Hela细胞增生和凋亡的影响

Objective To explore effect on the proliferation and apoptosis of Hela cells in vitro by using vascular endothelial growth factor-C(VEGF-C) antisense oligonucleotides (ASODN). Methods VEGF-C ASODN was transfected into Hela cells by liposome-mediated; the cells transfected with the oligodeoxynuclecotide (SODN) and saline were used as control groups. The efficiency of transfection was detected by fluorescence microscope. The inhibitive rate of cell growth was detected with MTT methods. Apoptosis and cell cycle were evaluated using FCM. The mRNA expression of VEGF-C was determined by RT-PCR, and the expression of VEGF-C was determined by western blotting. Results VEGF-C ASODN had been transfected into Hela cells by liposome-mediated. The index of apoptosis after transfection 48 h was (19.39±1.81)%. G2/M phase cell increased after transfection, meanwhile the expression of VEGF-C degraded on the level of mRNA and protein (P<0.05). Conclusion Transfeeted with VEGF-C ASODN could down-regulate the expression of VEGF on the level of mRNA and protein, block the cell circle, inhibit cell proliferation and induce apoptosis in Hela cells in vitro.     

转染血管内皮生长因子C反义寡核苷酸对子宫颈癌Hela细胞增生和凋亡的影响

Objective To explore effect on the proliferation and apoptosis of Hela cells in vitro by using vascular endothelial growth factor-C(VEGF-C) antisense oligonucleotides (ASODN). Methods VEGF-C ASODN was transfected into Hela cells by liposome-mediated; the cells transfected with the oligodeoxynuclecotide (SODN) and saline were used as control groups. The efficiency of transfection was detected by fluorescence microscope. The inhibitive rate of cell growth was detected with MTT methods. Apoptosis and cell cycle were evaluated using FCM. The mRNA expression of VEGF-C was determined by RT-PCR, and the expression of VEGF-C was determined by western blotting. Results VEGF-C ASODN had been transfected into Hela cells by liposome-mediated. The index of apoptosis after transfection 48 h was (19.39±1.81)%. G2/M phase cell increased after transfection, meanwhile the expression of VEGF-C degraded on the level of mRNA and protein (P<0.05). Conclusion Transfeeted with VEGF-C ASODN could down-regulate the expression of VEGF on the level of mRNA and protein, block the cell circle, inhibit cell proliferation and induce apoptosis in Hela cells in vitro.     

转染血管内皮生长因子C反义寡核苷酸对子宫颈癌Hela细胞增生和凋亡的影响

Objective To explore effect on the proliferation and apoptosis of Hela cells in vitro by using vascular endothelial growth factor-C(VEGF-C) antisense oligonucleotides (ASODN). Methods VEGF-C ASODN was transfected into Hela cells by liposome-mediated; the cells transfected with the oligodeoxynuclecotide (SODN) and saline were used as control groups. The efficiency of transfection was detected by fluorescence microscope. The inhibitive rate of cell growth was detected with MTT methods. Apoptosis and cell cycle were evaluated using FCM. The mRNA expression of VEGF-C was determined by RT-PCR, and the expression of VEGF-C was determined by western blotting. Results VEGF-C ASODN had been transfected into Hela cells by liposome-mediated. The index of apoptosis after transfection 48 h was (19.39±1.81)%. G2/M phase cell increased after transfection, meanwhile the expression of VEGF-C degraded on the level of mRNA and protein (P<0.05). Conclusion Transfeeted with VEGF-C ASODN could down-regulate the expression of VEGF on the level of mRNA and protein, block the cell circle, inhibit cell proliferation and induce apoptosis in Hela cells in vitro.     

转染血管内皮生长因子C反义寡核苷酸对子宫颈癌Hela细胞增生和凋亡的影响

Objective To explore effect on the proliferation and apoptosis of Hela cells in vitro by using vascular endothelial growth factor-C(VEGF-C) antisense oligonucleotides (ASODN). Methods VEGF-C ASODN was transfected into Hela cells by liposome-mediated; the cells transfected with the oligodeoxynuclecotide (SODN) and saline were used as control groups. The efficiency of transfection was detected by fluorescence microscope. The inhibitive rate of cell growth was detected with MTT methods. Apoptosis and cell cycle were evaluated using FCM. The mRNA expression of VEGF-C was determined by RT-PCR, and the expression of VEGF-C was determined by western blotting. Results VEGF-C ASODN had been transfected into Hela cells by liposome-mediated. The index of apoptosis after transfection 48 h was (19.39±1.81)%. G2/M phase cell increased after transfection, meanwhile the expression of VEGF-C degraded on the level of mRNA and protein (P<0.05). Conclusion Transfeeted with VEGF-C ASODN could down-regulate the expression of VEGF on the level of mRNA and protein, block the cell circle, inhibit cell proliferation and induce apoptosis in Hela cells in vitro.     

转染血管内皮生长因子C反义寡核苷酸对子宫颈癌Hela细胞增生和凋亡的影响

Objective To explore effect on the proliferation and apoptosis of Hela cells in vitro by using vascular endothelial growth factor-C(VEGF-C) antisense oligonucleotides (ASODN). Methods VEGF-C ASODN was transfected into Hela cells by liposome-mediated; the cells transfected with the oligodeoxynuclecotide (SODN) and saline were used as control groups. The efficiency of transfection was detected by fluorescence microscope. The inhibitive rate of cell growth was detected with MTT methods. Apoptosis and cell cycle were evaluated using FCM. The mRNA expression of VEGF-C was determined by RT-PCR, and the expression of VEGF-C was determined by western blotting. Results VEGF-C ASODN had been transfected into Hela cells by liposome-mediated. The index of apoptosis after transfection 48 h was (19.39±1.81)%. G2/M phase cell increased after transfection, meanwhile the expression of VEGF-C degraded on the level of mRNA and protein (P<0.05). Conclusion Transfeeted with VEGF-C ASODN could down-regulate the expression of VEGF on the level of mRNA and protein, block the cell circle, inhibit cell proliferation and induce apoptosis in Hela cells in vitro.     

转染血管内皮生长因子C反义寡核苷酸对子宫颈癌Hela细胞增生和凋亡的影响

Objective To explore effect on the proliferation and apoptosis of Hela cells in vitro by using vascular endothelial growth factor-C(VEGF-C) antisense oligonucleotides (ASODN). Methods VEGF-C ASODN was transfected into Hela cells by liposome-mediated; the cells transfected with the oligodeoxynuclecotide (SODN) and saline were used as control groups. The efficiency of transfection was detected by fluorescence microscope. The inhibitive rate of cell growth was detected with MTT methods. Apoptosis and cell cycle were evaluated using FCM. The mRNA expression of VEGF-C was determined by RT-PCR, and the expression of VEGF-C was determined by western blotting. Results VEGF-C ASODN had been transfected into Hela cells by liposome-mediated. The index of apoptosis after transfection 48 h was (19.39±1.81)%. G2/M phase cell increased after transfection, meanwhile the expression of VEGF-C degraded on the level of mRNA and protein (P<0.05). Conclusion Transfeeted with VEGF-C ASODN could down-regulate the expression of VEGF on the level of mRNA and protein, block the cell circle, inhibit cell proliferation and induce apoptosis in Hela cells in vitro.     

转染血管内皮生长因子C反义寡核苷酸对子宫颈癌Hela细胞增生和凋亡的影响

Objective To explore effect on the proliferation and apoptosis of Hela cells in vitro by using vascular endothelial growth factor-C(VEGF-C) antisense oligonucleotides (ASODN). Methods VEGF-C ASODN was transfected into Hela cells by liposome-mediated; the cells transfected with the oligodeoxynuclecotide (SODN) and saline were used as control groups. The efficiency of transfection was detected by fluorescence microscope. The inhibitive rate of cell growth was detected with MTT methods. Apoptosis and cell cycle were evaluated using FCM. The mRNA expression of VEGF-C was determined by RT-PCR, and the expression of VEGF-C was determined by western blotting. Results VEGF-C ASODN had been transfected into Hela cells by liposome-mediated. The index of apoptosis after transfection 48 h was (19.39±1.81)%. G2/M phase cell increased after transfection, meanwhile the expression of VEGF-C degraded on the level of mRNA and protein (P<0.05). Conclusion Transfeeted with VEGF-C ASODN could down-regulate the expression of VEGF on the level of mRNA and protein, block the cell circle, inhibit cell proliferation and induce apoptosis in Hela cells in vitro.     

转染血管内皮生长因子C反义寡核苷酸对子宫颈癌Hela细胞增生和凋亡的影响

Objective To explore effect on the proliferation and apoptosis of Hela cells in vitro by using vascular endothelial growth factor-C(VEGF-C) antisense oligonucleotides (ASODN). Methods VEGF-C ASODN was transfected into Hela cells by liposome-mediated; the cells transfected with the oligodeoxynuclecotide (SODN) and saline were used as control groups. The efficiency of transfection was detected by fluorescence microscope. The inhibitive rate of cell growth was detected with MTT methods. Apoptosis and cell cycle were evaluated using FCM. The mRNA expression of VEGF-C was determined by RT-PCR, and the expression of VEGF-C was determined by western blotting. Results VEGF-C ASODN had been transfected into Hela cells by liposome-mediated. The index of apoptosis after transfection 48 h was (19.39±1.81)%. G2/M phase cell increased after transfection, meanwhile the expression of VEGF-C degraded on the level of mRNA and protein (P<0.05). Conclusion Transfeeted with VEGF-C ASODN could down-regulate the expression of VEGF on the level of mRNA and protein, block the cell circle, inhibit cell proliferation and induce apoptosis in Hela cells in vitro.     

转染血管内皮生长因子C反义寡核苷酸对子宫颈癌Hela细胞增生和凋亡的影响

Objective To explore effect on the proliferation and apoptosis of Hela cells in vitro by using vascular endothelial growth factor-C(VEGF-C) antisense oligonucleotides (ASODN). Methods VEGF-C ASODN was transfected into Hela cells by liposome-mediated; the cells transfected with the oligodeoxynuclecotide (SODN) and saline were used as control groups. The efficiency of transfection was detected by fluorescence microscope. The inhibitive rate of cell growth was detected with MTT methods. Apoptosis and cell cycle were evaluated using FCM. The mRNA expression of VEGF-C was determined by RT-PCR, and the expression of VEGF-C was determined by western blotting. Results VEGF-C ASODN had been transfected into Hela cells by liposome-mediated. The index of apoptosis after transfection 48 h was (19.39±1.81)%. G2/M phase cell increased after transfection, meanwhile the expression of VEGF-C degraded on the level of mRNA and protein (P<0.05). Conclusion Transfeeted with VEGF-C ASODN could down-regulate the expression of VEGF on the level of mRNA and protein, block the cell circle, inhibit cell proliferation and induce apoptosis in Hela cells in vitro.     

RNA干扰沉默VEGF及其受体抗大肠癌血管生成研究进展

研究表明血管内皮生长因子(VEGF)及其受体在大肠癌血管生成中扮演重要角色.因此通过RNA干扰技术阻断大肠癌VEGF及其受体在大肠癌抗血管生成治疗中显示出良好的应用前景.     

VEGF、COX-2 mRNA在食管癌中的表达及其意义

目的 探讨血管内皮生长因子(VEGF)剪接变异体、环氧合酶-2(COX-2)与食管癌发生的关系.方法 应用RT-PCR方法对40例食管癌组织及其相应癌旁组织中VEGF、COX-2 mRNA的表达进行了研究.结果 VEGF121mRNA在癌组织中及相应癌旁组织中均有表达,两组差异无统计学意义.40例癌组织中,VEGF165高表达25例,占62.5%;COX-2高表达28例,占70%;40例癌旁组织中,VEGF165高表达6例(15.0%);COX2高表达5例(12.5%).结论 VEGF165、COX-2与食管癌的发生密切相关.     

全反式维甲酸对EC9706荷瘤裸鼠抑瘤作用的实验研究

目的：观察全反式维甲酸的体内抗肿瘤作用，探讨其体内抑瘤的作用机制。方法：采用裸鼠EC9706人食管癌细胞实体瘤模型进行体内抑瘤实验研究，应用全反式维甲酸10d后处死裸鼠，观察荷瘤裸鼠的肿瘤生长情况，测定肿瘤生长抑制率；HE染色对肿瘤组织进行细胞形态学观察，TUNEL法检测肿瘤组织中细胞凋亡，免疫组织化学法检测凋亡相关基因bax及bcl-2蛋白的表达情况。结果：全反式维甲酸对裸鼠EC9706人食管癌细胞实体瘤生长具有明显的抑制作用，抑瘤率达60％以上。组织学观察及TUNEL检测结果显示，肿瘤组织中散在凋亡细胞和凋亡小体。免疫组织化学检测结果显示，凋亡相关基因bax蛋白表达增加，bcl-2蛋白表达下降。结论：全反式维甲酸具有较强的体内抗肿瘤作用，作用机制与诱导肿瘤细胞凋亡有关。     

VEGF反义RNA 抑制裸鼠体内食管癌细胞生长的实验研究

 目的 探讨VEGF反义RNA对食管癌细胞在裸鼠体内生长的影响。方法 观察转染VEGF反义RNA的食管癌细胞TE-1在裸鼠体内成瘤性；应用免疫组化法、RT—PCR法检测移植瘤组织中VEGF蛋白及mRNA表达和MVD；用流式细胞仪和透射电镜检测细胞凋亡情况。结果 转染VEGF反义RNA的TE-1细胞在裸鼠体内肿瘤形成的潜伏期明显延长，所形成肿瘤的重量和体积小于对照组及空载体组。肿瘤组织中VEGF蛋白和mRNA的表达降低，MVD降低；肿瘤细胞发生明显的凋亡形态学改变；G0／G1期细胞明显增多，S期细胞明显减少，细胞增殖能力降低。结论 VEGF反义RNA能抑制裸鼠体内TE-1细胞的生长，减少肿瘤内血管的生成，增加细胞凋亡；为食管癌的基因治疗提供了一定的实验依据。     

二氢二醇脱氢酶和血管内皮生长因子在食管癌中的表达

 目的　探讨二氢二醇脱氢酶（DDH）以及血管内皮生长因子（VEGF）在食管癌中的表达情况及两者间的相关性,并判断二者对食管癌预后的影响。方法　应用免疫组织化学方法检测61例食管癌组织及其癌旁组织中DDH和VEGF的表达情况。结果　DDH及VEGF在食管癌中的表达率[65.57 %（40／61）、75.04（46／61）]均高于癌旁组织的表达率[19.67 %（12／61）、39.30 %（24／61）]（均P＝0.000）,两者的表达与患者的年龄、性别均无相关性（均P＞0.05）,而与肿瘤淋巴结转移密切相关（P＝0.029,P＝0.025）,二者在淋巴结转移者的表达高于无淋巴结转移者,二者无论阳性表达的患者预后差。DDH与VEGF间表达呈正相关。结论　DDH和VEGF在食管癌的发生、发展过程中有一定的相关性。     

食管鳞癌组织中诱导型一氧化氮合酶和血管内皮生长因子的表达及意义

 目的 研究食管鳞癌组织中诱导型一氧化氮合酶（iNOS）与血管内皮生长因子(VEGF)的表达及其临床意义,探讨iNOS与VEGF的相关性。方法  用免疫组化SABC法检测52例食管鳞癌组织和20例癌旁正常食管组织中iNOS与VEGF的表达,并统计分析两者的相关性及其与食管癌临床病理学特征的关系。结果 iNOS与VEGF在食管鳞癌组织中的阳性率分别是63.46％(33/52)和67.31％(35/52),在癌旁正常组织中的阳性率分别是10%（2/20）和20%（4/20）,在食管鳞癌组织中的表达水平明显高于癌旁组织中的表达水平（P﹤0.01）。 iNOS与VEGF的表达与食管鳞癌的组织学分级（P﹤0.01）、临床TNM分期和淋巴结转移有关（P﹤0.05）,与患者性别无关（P＞0.05）,iNOS的表达与VEGF的表达呈正相关（ｒ＝0.748 2,P﹤0.01）。结论 iNOS与VEGF蛋白在食管鳞癌组织中均有较高的阳性表达,且表达有相关性,两者可能存在共同的激活机制,iNOS和VEGF蛋白表达与食管癌的恶性进程有关。     

血管内皮生长因子反义寡核苷酸对体外及裸鼠体内前列腺癌细胞PC3生物学特性影响的研究

 目的　探讨血管内皮生长因子（VEGF）反义寡核苷酸对前列腺癌细胞PC3在体外和裸鼠体内生长特性的影响,以及局部注射反义寡核苷酸治疗裸鼠皮下移植肿瘤的疗效。方法　采用Oligofectamine携带VEGF反义寡核苷酸转染前列腺癌细胞PC3,实验分为反义寡核苷酸组、正义寡核苷酸组和对照组。软琼脂糖凝胶实验和细胞侵袭实验检测转染反义寡核苷酸的肿瘤细胞成瘤性和侵袭性。裸鼠成瘤实验观察VEGF反义寡核苷酸对体内PC3细胞增殖的影响。建立裸鼠前列腺癌种植瘤模型,局部注射VEGF反义核酸治疗,测定体内抑瘤率。结果　对照组、正义寡核苷酸组和反义寡核苷酸组的PC3细胞每组阳性克隆数分别为53.67±5.86、52.33±6.43和26±4.58（F＝13.73,P＜0.01）,反义组体外形成克隆数显著减少;三组细胞侵袭至下室的细胞数分别为45.60±5.53、42.35±6.21和18.37±3.52（F＝14.18,P＜0.01）;转染VEGF反义核酸的细胞移植瘤生长较慢,接种28 d后三组的肿瘤体积分别为（1330.32±81.38）、（1267.64±120.26）和（641.83±58.34）mm3（F＝17.26,P＜0.01）;局部注射治疗4周后,三组肿瘤质量分别为（1.25±0.08）g、（1.17±0.06）g和（0.41±0.05）g,与对照组比较,正义组和反义组肿瘤抑制率分别为6.4 %和67.2 %,差异有统计学意义（χ2＝17.72,P＜0.005）。结论　VEGF反义寡核苷酸可以抑制前列腺癌细胞PC3 VEGF的表达,进而促进细胞凋亡,降低其成瘤性,抑制侵袭能力。转染VEGF反义寡核苷酸的前列腺癌细胞PC3移植瘤在裸鼠体内生长受抑制,局部注射反义核酸可显著抑制移植瘤的生长。     

食管癌血管生成的研究进展

食管癌的高侵袭性与血管生成密切相关,并伴随微血管密度、血管内皮生长因子、血管生成相关因子及其受体表达水平的改变.研究发现,血清中高水平的血管生成相关因子与食管癌患者疗效不佳及预后不良密切相关,提示其可作为食管癌治疗的新靶点,值得进一步深入探索.     

VEGF反义RNA对人食管癌细胞生长转移的抑制作用

目的:探讨研究血管内皮生长因子(vascularendothelialgrowthfactor,VEGF)反义RNA在抑制恶性肿瘤生长和转移及抗肿瘤血管生成治疗中的意义。方法:采用脂质体法将反义VEGFcDNA质粒转染入食管癌细胞TE1;MTT法检测细胞增殖情况;原位杂交和RTPCR技术检测VEGF的表达水平,FCM分析细胞周期,并对转染前后细胞进行裸鼠体内生长转移等生物学行为实验。结果:转染反义VEGFcDNA质粒的TE1细胞中VEGF表达水平降低,与对照组比较,裸鼠体内成瘤时间延长,肿瘤生长速度减慢,质量和体积差异有显著性意义(P<0.05)。结论:VEGF反义RNA能抑制食管癌TE1细胞VEGF表达,对裸鼠体内TE1细胞的生长有抑制作用,有望成为食管癌基因治疗的优选基因之一。     

VEGF反义寡核苷酸对Lewis肺癌细胞的抑制作用

目的:〖HT5"SS〗 探讨血管内皮生长因子（vascular endothelial growth factor, VEGF）反义寡核苷酸对C57BL/6小鼠肺癌细胞的抑制作用。〖HT5W〗方法:〖HT5"SS〗 制作C57BL/6小鼠皮下肺癌模型40只,分为VEGF反义寡核苷酸（ASODN）治疗组、VEGF正义寡核苷酸(SODN)治疗组、VEGF错义寡核苷酸（MODN）治疗组及对照组。接种Lewis肺癌细胞后24 h内,用ASODN、SODN及MODN皮下注射进行治疗,对照组只注射生理盐水,观察小鼠肿瘤的生长情况以及组织形态学改变,标本常规石蜡切片,HE染色,用免疫组化方法检测VEGF蛋白表达。〖HT5W〗结果:〖HT5"SS〗 对照组、ASODN组、SODN组、MODN组平均瘤重分别为（7.33±0.71）g、（4.56±0.38）g、(7.59±0.32)g和（7.62±0.39）g,ASODN组、SODN组、MODN组抑瘤率分别为43.8%、5.5%、3.1%。光镜下观察, VEGFASODN 能明显抑制肿瘤细胞生长,降低增殖活性。 免疫组化结果表明,ASODN组VEGF的表达水平明显低于SODN组、MODN组及对照组（P<0.05）。CD34免疫组化结果表明,ASODN组MVD为8.25±2.12,与对照组(14.78±3.51)、SODN组(13.71±3.62)及MODN组(12.81±2.56)比较,ASODN组MVD明显减少（P<0.01）。〖HT5W〗结论: 〖HT5"SS〗原位注射VEGF反义寡核苷酸能抑制小鼠肺癌生长。