摘要
本研究观察TCR独特型DNA疫苗诱导BALB c小鼠抗肿瘤免疫反应的情况。用CEM淋巴瘤细胞系和BALB c小鼠作模型 ,RT PCR扩增CEM细胞系特异性重排的TCRVβ基因 ,克隆到真核表达载体pcDNA3中作为DNA疫苗。用肌内注射法免疫小鼠 ,间接免疫荧光法检测小鼠抗体生成和用MTT法测定CTL活性以检测抗独特型的细胞免疫。结果发现 ,接种DNA疫苗后第 4周开始小鼠血清中即可检测到特异性抗独特型抗体 ,抗体滴度在第 6周达高峰 ,应用IL 6为免疫佐剂可使抗体滴度明显增高。上述结果表明 ,TCR独特型DNA疫苗可以诱导小鼠产生抗淋巴瘤细胞的独特型特异性抗体 ,应用IL
This study was undertaken to investigate the anti-lymphocytic malignacy immunologic effects induced by TCR idiotypic DNA vaccine on BALB/c mice. CEM lymphoma cell line and BALB/c mice were used as models. The rearrangement gene fragment coding TCR Vβ region of CEM cell line was obtained by RT-PCR technique. The PCR product was cloned into the eukaryocytic expression vector pcDNA3 to be used as DNA vaccine. The experimental animals were immunized by intramuscular injection with DNA vaccine. The specific anti-idiotypic antibody was detected by indirect immunofluorescence assay. The specific anti-idiotypic cellular immunity was detected by CTL activity assay using MTT method. The results showed that specific anti-idiotypic antibody in the immunized mice sera could be found since four weeks after immunization and came to the peak of titer on the sixth week. Using IL-6 as immunological adjuvant could significantly increase the antibody titers. It was concluded that the TCR idiotypic DNA vaccine could induce effectively the specific anti-lymphoma idiotypic antibody in BALB/c mice. Using IL-6 as immunological adjuvant could significantly increase the antibody titers induced by idiotipic DNA vaccine.
出处
《中国实验血液学杂志》
CAS
CSCD
2000年第3期199-204,共6页
Journal of Experimental Hematology
基金
国家自然科学基金资助 编号 3 9870 3 5 4
3 9970 3 13
关键词
TCR独特型
DNA疫苗
淋巴系统肿瘤
TCR idiotypic DNA vaccinelymphocytic malignancylymphoma cell lineantitumor immue response
