Abstract:
본 발명은 lon 유전자 및/또는 cpxR 유전자가 결실된 살모넬라 변이균주, 그 제조방법 및 상기 변이균주를 함유하는 약독화된 살모넬라 백신조성물에 관한 것이다. 본 발명에 따른 약독화된 살모넬라 생백신은 생산 및 보관이 용이하여 경제적이며, 가축에 투여 시, 안전하고 효율적으로 살모넬라 감염을 예방할 수 있다. 살모넬라, 생백신, 약독화, 변이균주
Abstract:
An attenuated Salmonella live vaccine is provided to be easily and economically produced and stored and prevent Salmonella infection safely and efficiently when administered to a domestic animal. A method for preparing a Salmonella live vaccine comprises a step of deleting a lon or a cpxR gene from a chromosome DNA of a Salmonella strain such as Salmonella typhimurium, S. typhi, S. paratyphi, S. sendai, S. gallinarium and S. enteritidis. A vector includes a DNA where a DNA fragment linked to a 5'-terminal of the lon gene derived from the Salmonella strain and a DNA fragment linked to a 3'-terminal of the lon gene are bonded. An attenuated Salmonella vaccine composition comprises a Salmonella mutant where the lon gene and the cpxR gene are deleted from the chromosome DNA of the Salmonella and a pharmaceutically acceptable carrier.