Her2/ECD -sf162/TM嵌合 VLPs 的制备及抗肿瘤免疫效果研究 |
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引用本文: | 龙敏,董柯,王希,林芳,刘冲,张惠中.Her2/ECD -sf162/TM嵌合 VLPs 的制备及抗肿瘤免疫效果研究[J].现代肿瘤医学,2016(21):3355-3359. |
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作者姓名: | 龙敏 董柯 王希 林芳 刘冲 张惠中 |
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作者单位: | 第四军医大学唐都医院临床实验与检验科,陕西 西安,710038 |
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基金项目: | 国家自然科学基金资助项目(编号81172148) |
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摘 要: | 目的:成功制备 Her2胞外段基因与猴免疫缺陷病毒(simian immunodeficiency virus,SIV)包膜蛋白sf162跨膜区基因融合的 Her2/ECD -sf162/TM病毒样颗粒(VLPs),并在小鼠体内进行初步的抗肿瘤免疫效果研究。方法:利用前期构建好的 Her2/neu 与 SIV -gag 嵌合的表达载体 Her2/ECD -sf162/TM,制备 Her2/neu 与 SIV -gag 嵌合型 VLPs 疫苗,并用该疫苗免疫小鼠。结果:VLPs 可成功激发小鼠体内免疫应答反应,产生血清抗 VLPs 的抗体;VLP 免疫后接种 Her2/neu +小鼠乳腺癌细胞 EMT6,结果显示该疫苗可有效抑制肿瘤生长;同时,VLP 对荷瘤鼠治疗结果也显示,该疫苗可在一定程度上抑制肿瘤生长。结论:VLPs 疫苗具有良好的免疫原性,且免疫后对肿瘤攻击具有保护作用。
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关 键 词: | Her2 /neu 肿瘤疫苗 VLPs 免疫 |
Expression and development of anti -tumor immunity of Her2/ECD -sf162/TMVLPs |
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Abstract: | Objective:To gain Her2 /ECD -sf162 /TMVLPs vaccine and study the effect of anti -tumor immunity in BALB/c mice.Methods:Her2 /ECD -sf162 /TM VLPs which laiding a foundation for further study of Her2 virus like particles vaccine that based on SIV -gag protein was successfully constructed,and the effect of anti -tumor im-munity has been studied in vivo.Results:BALB/c mice after immunization challenged with Her2 /neu + cancer cells, the VLPs could inhibit the growth of the tumor.Besides,the effects of VLPs to tumor -bearing was also observed, which the result showed the VLPs could suppress the tumor growth to some extent.Conclusion:This VLP vaccine can not only induce strong tumor -specific immune response,but also can protect the mice from attack with tumor cells af-ter immunized. |
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Keywords: | Her2 /neu tumor vaccine VLPs immunize |
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