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      Vaccine Design 

      Immunoproteomic Approach for Screening Vaccine Candidates from Bacterial Outer Membrane Proteins

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      Springer New York

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          The structural biology of β-barrel membrane proteins: a summary of recent reports.

          The outer membranes of Gram-negative bacteria, mitochondria, and chloroplasts all contain transmembrane β-barrel proteins. These β-barrel proteins serve essential functions in cargo transport and signaling and are also vital for membrane biogenesis. They have also been adapted to perform a diverse set of important cellular functions including acting as porins, transporters, enzymes, virulence factors and receptors. Recent structures of transmembrane β-barrels include that of a full length autotransporter (EstA), a bacterial heme transporter complex (HasR), a bacterial porin in complex with several ligands (PorB), and the mitochondrial voltage-dependent anion channel (VDAC) from both mouse and human. These represent only a few of the interesting structures of β-barrel membrane proteins recently elucidated. However, they demonstrate many of the advancements made within the field of transmembrane protein structure in the past few years. Published by Elsevier Ltd.
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            The versatile β-barrel membrane protein

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              Immunoproteomic identification of polyvalent vaccine candidates from Vibrio parahaemolyticus outer membrane proteins.

              Bacterium is still a major cause of many infectious diseases and a global threat to human health, aquaculture, and animal feeding. Prevention by vaccination is the most efficient and economical way of fighting bacterial diseases, but one of the persistent challenges to prevent bacterial infections and disease transmissions is the existence of multiple bacterial species, families, and genera and the lack of efficient polyvalent vaccines against them. The information on candidate immunogens for polyvalent vaccine development is elusive, as well. For the development of broad cross-protective vaccines, we have employed heterogeneous antiserum-based immunoproteomics approaches to identify antigenically similar outer membrane (OM) proteins that could be used as potential polyvalent vaccine candidates against Vibrio parahaemolyticus , V. alginolyticus , V. fluvialis , Aeromonas hydrophila , and A. sobria infections. VPA1435, VP0764, VPA1186, VP1061, and VP2850 could be recognized by at least three antisera and demonstrated significantly passive and active immune protection against V. parahaemolyticus infection in a crucian carp model. VP1061 and VP2850 induced higher immune and protective abilities than the other three OM proteins. Furthermore, the abilities of VP1061 and VP2850 in the generation of broad cross-protective immune reaction against the infections of V. alginolyticus , A. hydrophila , and Pseudomonas fluorescens were also investigated in fish and mouse models. Our results suggested that VP1061 and VP2850 could potentially be used as polyvalent vaccine candidates for the development of novel polyvalent vaccines against V. parahaemolyticus and other Gram-negative pathogens. On the basis of these results, characteristics of OM proteins as polyvalent vaccine candidates have been addressed.
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                Author and book information

                Book
                978-1-4939-3388-4
                978-1-4939-3389-1
                2016
                10.1007/978-1-4939-3389-1
                Book Chapter
                2016
                April 14 2016
                : 519-528
                10.1007/978-1-4939-3389-1_34

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