期刊
RESEARCH IN VETERINARY SCIENCE
卷 98, 期 -, 页码 1-6出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.rvsc.2014.11.013
关键词
Immunogenicity; Pasteurella multocida; Mouse model; Recombinant transferrin binding protein A (rTbpA); Protective efficacy
资金
- Department of Biotechnology (DBT), Ministry of Science and Technology, Government of India, New Delhi (DBT) [BT/PR15174/GBD/27/357/2011]
Transferrin binding protein A (TbpA), an iron acquisition surface protein that also acts as virulence factor, is widely distributed among strains of Pasteurella multocida. In the present study, a total of seven clones of TbpA fragments (D-39 to F-777; D-39 to Q(697); V-188 to F-777; V-188 to Q(697); D-39 to P-377; V-188 to P-377 and D-39 to F-187) belonging to Pasteurella multocida B:2 were constructed, over-expressed and purified as recombinant fusion proteins from Escherichia coli using affinity chromatography. Immunization of mice with rTbpA fragments resulted in a significant (p < 0.05) rise in antigen specific serum total IgG and subtypes (IgG1 and IgG2a) tires. All immunized mice challenged with 8 LD50 of Pasteurella multocida B:2 resulted in a variable protective efficacy up to 50%. The study indicated the potential possibilities to incorporate full length TbpA in subunit vaccine formulation composed of synergistic subunit antigens against haemorrhagic septicaemia (HS) in cattle and buffalo. (C) 2014 Elsevier Ltd. All rights reserved.
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