| 摘要: |
| 目的:构建前列腺特异性膜抗原(PSMA)、粒细胞-巨噬细胞集落刺激因子(GM-CSF)核酸疫苗并测定其免疫活性.方法:应用DNA疫苗载体pIRES构建pIRES-PSMA-mGM-CSF、pIRES-PSMA、pIRES-mGM-CSF重组质粒,酶切鉴定正确后与pIRES空质粒分别免疫C56BL/6小鼠(每组15只),LDH释放试验测定各自免疫后小鼠的特异性细胞毒性T细胞(CTL)杀伤活性.结果:成功构建上述重组质粒;pIRES-PSMA-mGM-CSF免疫后小鼠特异杀伤率最高,pIRES-PSMA、pIRES-mGM-CSF次之,pIRES空质粒最差(P＜0.05),各组杀伤效果以效靶比为101时最高.结论:PSMA及mGM-CSF双顺反子DNA疫苗有望在前列腺癌的基因治疗中发挥积极的作用. |
| 关键词: 前列腺特异性膜抗原、粒细胞-巨噬细胞集落刺激因子、疫苗,DNA |
| DOI：10.3724/SP.J.1008.2006.00837 |
| 投稿时间：2006-07-04修订日期：2006-07-21 |
| 基金项目: |
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| Construction of bicistronic DNA vaccine expressing prostate-specific membrane antigen and granulocyte-macrophage colony-stimulating factor and determination of its activity |
| HUANG Yun-teng,YE Chuan-zhong,CHEN Fang,QI Juan |
| (上海交通大学医学院附属新华医院泌尿外科,上海,200092) |
| Abstract: |
| Objective： To construct DNA vaccines expressing prostate-specific membrane antigen （PSMA） and/or granulocytemacrophage colony-stimulating factor （GM-CSF） and to determine their immunoactivity. Methods： Recombinant plasmids pIRES-PSMA-mGM-CSF , pIRES-PSMA, and pIRES-mGM-CSF were constructed with DNA vaccine vector plRES. Alter identified by endonuclease digestion, the above 3 plasmids and blank pIRES vector were used to immunize C56BL/6 mice （n= 15）. LDH release assay was used to exam the cytotoxicity of cytolytic T lyrnphocytes in each group. Results： We successfully constructed the above mentioned recombinant plasmids. Mice in pIRES-PSMA-mGM-CSF immunized group had the highest specific cytotoxicity, followed by pIRES-PSMA and pIRES-mGM-CSF immunized groups. The blank pIRES group had the lowest cytotoxicity （P〈0.05）. The cytotoxicity was the highest in all 4 groups at an effector/target ratio of 10/1. Condusion： The bicistronic DNA vaccine expressing PSMA and mGM-CSF may have a promising therapeutic value in gene therapy of prostate cancer. |
| Key words: prostate specific membrane antigen granulocyte-macrophage colony-stimulating factor vaccine,DNA |
