Document Detail

Comparison of the immune responses induced by oral immunization of mice with Lactobacillus casei-expressing porcine parvovirus VP2 and VP2 fused to Escherichia coli heat-labile enterotoxin B subunit protein.
MedLine Citation:
PMID:  20226529     Owner:  NLM     Status:  In-Data-Review    
The major structural protein VP2 of porcine parvovirus (PPV) was used as the model parvovirus antigen, which has been expressed in Lactobacillus casei fusing with Escherichia coli heat-labile enterotoxin B subunit (LTB) as mucosal adjuvant. The VP2-LTB DNA fragment was cloned into vector pPG611 or pPG612 to generated inducible surface-displayed and secretion expression systems based on xylose promoter, designated as rLc:pPG611-VP2-LTB (recombinant L. casei) and rLc:pPG612-VP2-LTB, respectively. Expression of the fusion protein was verified by SDS-PAGE, Western blot immunofluorescence and electron microscopy. It was observed that the level of IgG or sIgA from mice orally immunized with VP2-LTB was higher than that from mice received VP2 and negative control, which demonstrated significantly statistically different. Especially, the titer of IgG or sIgA in mice immunized with rLc:pPG612-VP2-LTB is the highest in this study. In summary, LTB as mucosal adjuvant was able to effectively facilitate induction of mucosal and systemic immunity by L. casei-expressing VP2 fusion protein.
Diqiu Liu; Xiangqing Wang; Junwei Ge; Songmei Liu; Yijing Li
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Publication Detail:
Type:  Journal Article     Date:  2010-03-11
Journal Detail:
Title:  Comparative immunology, microbiology and infectious diseases     Volume:  34     ISSN:  1878-1667     ISO Abbreviation:  Comp. Immunol. Microbiol. Infect. Dis.     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2011-02-11     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7808924     Medline TA:  Comp Immunol Microbiol Infect Dis     Country:  England    
Other Details:
Languages:  eng     Pagination:  73-81     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier Ltd. All rights reserved.
Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, 59 Mucai Street, Harbin 150030, PR China.
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