Abstract:
:Maltoporin (LamB) is a family of outer membrane proteins. There has been no report of immunological characteristics of LamB in the Vibrio species so far. In this study, lamB genes from eight Vibrio strains were cloned and sequenced. The bioinformatics analysis indicated that sequence similarities of LamB proteins were ranged from 46.7% to 81.1%. Further, the result showed that their antigenic epitopes were highly conserved implying that LamB might be a shared antigen among Vibrios. The Western blot of rabbit sera against recombinant LamB from V. alginolyticus ATCC 33787 with cell lysate of 18 Vibrio strains showed cross-recognition. Bands observed on cell lysate of Vibrio strains immunoblotted with the anti-LamB sera ranged between 40 and 49 kDa. The Whole-cell ELISA assay further confirmed that the antisera of recombinant LamB recognized the tested Vibrio strains indicating the surface-exposed of LamB. Finally, the cross-protective property of recombinant LamB was evaluated through vaccination and subsequent challenge with heterogeneous virulent Vibrio strains in zebrafish. Recorded relative percent survival (RPS) of the vaccinated group varied from 54.1% to 77.8%, showing that zebrafish were protected from Vibrio infection after immunization with LamB protein. The cumulative evidences in this study suggested that LamB was a conserved antigen among tested Vibrio species and might be a potentially versatile vaccine candidate for the prevention of Vibriosis.
journal_name
Vaccinejournal_title
Vaccineauthors
Lun J,Xia C,Yuan C,Zhang Y,Zhong M,Huang T,Hu Zdoi
10.1016/j.vaccine.2013.12.035subject
Has Abstractpub_date
2014-02-07 00:00:00pages
809-15issue
7eissn
0264-410Xissn
1873-2518pii
S0264-410X(13)01766-0journal_volume
32pub_type
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