中文摘要：

目的构建人视网膜母细胞瘤（retinoblastoma 1,RB-1）基因真核表达载体,并在前列腺癌细胞株PC-3中表达,为进一步研究其在前列腺癌发病中的作用和机制打下基础。方法采用PCR方法扩增RB-1基因编码区的全长序列,并加上FLAG标签,利用分子克隆技术将其重组于CMV载体中。利用酶切、序列分析鉴定克隆正确性。转染PC-3细胞,用Western Blot检测其表达,用免疫荧光检测其在细胞中的定位。结果克隆的RB-1真核表达载体完全正确,Western Blot检测到RB-1有表达,免疫荧光检测其主要定位于细胞核内。结论成功地构建了RB-1真核表达载体,其能够在PC-3中高效表达,并主要定位于细胞核内。

英文摘要：

Objective To construct an eukaryotic recombinant expression vector for retinoblastoma 1 gene （RB-1） and investigate the role of RB-1 in prostate cancer. Methods The coding sequence of RB-1 gene tagged with FLAG was amplified from the plasmid CMV-RB by PCR method. The fragment was cloned into CMV expression vector and identified by restriction enzyme digestion and sequence analysis. Western Blotting was used to detect RB-1 expression and immunofluorescence was used to observe RB-1 distribution in PC-3 cells transfected with the recombinant. Results The expression vector CMV-FLAG-RB was successfully constructed as confirmed by PCR, endonuclease digestion and DNA sequence analysis. RB-1 protein was highly expressed and showed a nuclear distribution in PC-3 cells transfected with the recombinant. Conclutions The eukaryotic expression vector for RB-1 has been successfully constructed and can be efficiently expressed in PC-3 cells. The expression of RB-1 is located in the cell nuclei.