摘要
目的:探讨Survivin、Survivin-ΔEx3及VEGF在食管癌细胞诱导血管形成中作用的相关性。方法:用食管鳞癌肿瘤条件培养基培养人脐静脉内皮细胞,用ELISA法检测肿瘤条件培养基中VEGF蛋白的表达情况。用RT-PCR法检测内皮细胞中Survivin、Survivin-ΔEx3及VEGF的表达情况。结果:肿瘤条件培养基中VEGF蛋白表达随培养时间呈上升趋势。实验组人脐静脉内皮细胞中Survivin在更换肿瘤条件培养基后4及10h时表达明显增加,与对照组比较差异有统计学意义(CMvs RPMI:4h:1.019 7±0.058 8 vs 0.658 8±0.043 7,P=0.000 5;10 h:0.797 1±0.074 4 vs0.444 9±0.041 2,P=0.001 0),而Survivin-ΔEx3在实验组和对照组间的表达差异无统计学意义(CMvs RP-MI:4h:0.423 7±0.087 0 vs 0.294 0±0.043 1,P=0.109 1;10h:0.372 7±0.084 8 vs 0.226 4±0.009 2,P=0.078 1),VEGF在4及10h时表达明显下降,与对照组比较差异有统计学意义(CM vs RPMI:4h:0.276 7±0.065 8 vs 0.977 8±0.044 5,P=0.0000;10h:0.173 9±0.024 1 vs 0.917 8±0.124 7,P=0.004 8)。结论:食管癌肿瘤条件培养基可通过VEGF作用于人脐静脉内皮细胞表面的受体,进而增加人脐静脉内皮细胞中Survivin的表达,促进肿瘤新生血管形成,同时抑制血管内皮细胞中VEGF的表达,这为食管癌肿瘤血管形成的发生机制及防治提供一定的实验依据。
OBJECTIVE:To investigate the roles of Survivin,Survivin-ΔEx3 and VEGF in angiogenesis induced by esophageal squamous cell carcinoma(ESCC).METHODS:VEGF expression in conditioned medium(CM) was examined by ELISA.Expression levels of the Survivin and Survivin-ΔEx3 in Human umbilical vein endothelial cells(HUVEC) which were cultured with CM from ESCC cell line(TE-5) were examined by RT-PCR.RESULTS:VEGF protein concentration in ESCC-derived CM was increased in time-dependent manner by ELISA.The expression level of Survivin in HUVEC increased significantly at 4 and 10 h(CM vs RPMI:4 h:1.019 7±0.058 8 vs 0.658 8±0.043 7,P=0.000 5;10 h:0.797 1±0.074 4 vs 0.444 9±0.041 2,P=0.001).But Survivin-ΔEx3 had no significant change in each group(CM vs RPMI:4 h:0.423 7±0.087 0 vs 0.294 0±0.043 1,P=0.109 1;10 h:0.372 7±0.084 8 vs 0.226 4±0.009 2,P=0.078 1).The expression level of VEGF decreased significantly at 4 h and 10 h,which has a very significant difference compared with the control group(CM vs RPMI:4 h:0.276 7±0.065 8 vs 0.977 8±0.044 5,P=0.000 0;10 h:0.173 9±0.024 1 vs 0.917 8±0.124 7,P=0.004 8).CONCLUSION:The wild type Survivin but not Survivin-ΔEx3 is related to angiogenesis in ESCC.
出处
《中华肿瘤防治杂志》
CAS
2011年第23期1835-1838,共4页
Chinese Journal of Cancer Prevention and Treatment
基金
黑龙江省卫生厅资助项目(2009-115)