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Identification of immunoreactive proteins of Brucella melitensis by immunoproteomics

Science China(Life Sciences) 2011年第9期54卷 880-887页

作者： ZHAO ZhongPeng YAN Fang JI WenHui LUO DeYan LIU Xin XING Li DUAN YueQiang YANG PengHui SHI XiuMin LI Zhong WANG XiLiang State Key Laboratory of Pathogen and Biosecurity Beijing Institute of Microbiology and Epidemiology Beijing 100071 China College of Animal Science and Veterinary Medicine Shanxi Agricultural University Taigu 030801 China

Infection with Brucella causes brucellosis, a chronic disease in humans, which induces abortion and sterility in livestock. Among the different Brucella species, Brucella melitensis is considered the most virulent and is the predominant species associated with outbreaks in China. To date, no safe human vaccine is available against Brucella infection. The currently used live vaccines against Brucella in livestock induce antibodies that interfere with the diagnosis of field infection in vaccinated ani- mals, which is harmful to eradication programs. However, there is as yet no complete profile of immunogenic proteins of B. melitensis. Towards the development of a safer, equally efficacious, and field infection-distinguishable vaccine, we used immunoproteomics to identify novel candidate immunogenic proteins from B. melitensis M5. Eighty-eight immunoreactive protein spots from B. melitensis M5 were identified by Western blotting and were assigned to sixty-one proteins by mass spectrometry, including many new immunoreactive proteins such as elongation factor G, FOFI ATP synthase subunit beta, and OMPI. These provide many candidate immunoreactive proteins for vaccine development.

关键词： Brucella immunoproteomics immunoreactive protein

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