使用减弱的S. typhimurium进行口服体内转基因疫苗接种
A Darji1, C A Guzmán, B Gerstel
1Division of Cell Biology and Immunology, Gesellschaft für Biotechnologische Forschung, National Research Centre for Biotechnology, Braunschweig, Germany.
Cell
|December 31, 1997
概括
口服遗传免疫使用减弱的沙门氏菌型转化与Listeria monocytogenes病毒性基因诱导了强烈的免疫反应和保护. 这种多功能系统证明了有效的抗原传递和疫苗开发潜力.
科学领域:
- * 微生物学和免疫学
- * 基因工程和疫苗开发
背景情况:
- *开发新的口服遗传免疫策略对于有效的疫苗接种至关重要.
- *减弱的细菌菌株有潜力作为传递外来抗原的载体.
研究的目的:
- * 评估一种减弱的沙门氏菌 (S. typhimurium) 菌株作为口腔遗传免疫的载体.
- * 评估表达Listeria monocytogenes毒性因子 (ActA和listeriolysin) 的转变剂的免疫性和保护性疗效.
主要方法:
- * 用截断的ActA和listeriolysin基因构建真核体表达载体.
- * S. typhimurium aroA 通过这些载体的转化.
- *用转变的S. typhimurium对动物进行口服免疫,并评估细胞和幽默免疫反应.
- *体外研究以证明等离子体DNA转移到宿主细胞 (初级腹膜巨细胞).
主要成果:
- *用转变剂口服免疫诱导了强大的细胞和幽默性免疫反应.
- * 利斯特里奥林素转换剂赋予了保护性免疫力.
- *观察到有证据表明塑体DNA从细菌载体转移到宿主细胞.
- * 该系统被证明对抗原输送和抗体生成具有多样性.
结论:
- *减弱型S. typhimurium是一种非常有效的口腔遗传免疫载体.
- *这种方法可以识别保护性抗原,并有效地产生针对各种DNA段的抗体.
- *经过证明的等离子体转移机制支持了这种免疫系统的有效性.
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