【作者】 梁宏；

【导师】 武玉东；

【作者基本信息】 郑州大学 ， 外科学， 2012， 硕士

【摘要】 目的观察靶向干扰前列腺癌抗原-1(PCA-1)表达对前列腺癌裸鼠移植瘤的影响。方法培养人前列腺癌LNCaP细胞并将其注射到裸鼠皮下建立前列腺癌裸鼠移植瘤模型。将裸鼠随机分为实验组和对照组,实验组：将靶向干扰PCA-1表达的重组质粒PSMAe/p-PCA-1-pA-Sliencer注射到裸鼠移植瘤局部和周围,对照组：将PBS注射到移植瘤局部和周围；观察移植瘤生长情况和实验结束时肿瘤的大小。应用免疫组织化学方法和常规病理技术观察肿瘤组织中PCA-1表达情况以及裸鼠主要器官的病理变化。结果实验组裸鼠移植瘤生长速度明显慢于对照组,差异具有统计学意义(P<0.05)；实验结束时实验组和对照组的移植瘤体积(cm3)分别为1.142±0.157和3.086±0.265,差异有统计学意义(P<0.05)。实验组裸鼠的主要器官未出现明显病理变化。实验组裸鼠移植瘤组织PCA-1蛋白染色平均总积分(3.8±1.48)高于对照组(6.2±2.48),差异具有统计学意义(P<0.05)。结论成功建立前列腺癌裸鼠移植瘤模型,靶向干扰PCA-1表达可以抑制移植瘤的生长,对裸鼠主要器官未产生明显影响。更多还原

【Abstract】 ObjectiveTo observe role of targeting inhibition of prostate cancer antigen-1expression for prostate cancer xenografts in nude mice.MethodsWe inject human prostate cancer LNCaP cells into subcutaneous tissue of nude mice to establish prostate cancer xenografts in nude mice. The mice were randomly divided into experimental and control groups. Experimental group:the recombinant plasmid PSMAe/p-PCA-1-pA-Sliencer was injected into xenografts of nude mice to target to interfere with the PCA-1expression. Control group:PBS injected into the local and around xenografts of nude mice. We observed the growth speed of xenografts and the size of xenografts at the end of the experiment. We applied immunohistochemical methods and conventional pathology to observe the PCA-1expression in xenografts of nude mice and pathological changes in major organs of nude mice.ResultsThe growth speed of xenografts in experimental group was significantly slower than that in control group (P<0.05). At the end of the experiment, the volume of xenografts in experimental group and control group (cm3) were respectively1.142±0.157and3.086±0.265, the difference was statistically significant (P<0.05). The main organs of nude mice in the experimental group does not appear significant pathological changes. The average total score of PCA-1protein staining in experimental group (3.8±1.48) is higher than that in control group (6.2±2.48)(P＜O.05).ConclusionWe have successfully established prostate cancer xenografts in nude mice, targeted interference with the PCA-1expression can inhibit tumor growth and did not significantly affect the major organs of nude mice.更多还原