{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,30]],"date-time":"2026-08-30T02:48:36Z","timestamp":1788058116622,"version":"build-2784847793"},"reference-count":39,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2024,5,15]],"date-time":"2024-05-15T00:00:00Z","timestamp":1715731200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Key Research and Development Program of China","award":["2018YFE0101300"],"award-info":[{"award-number":["2018YFE0101300"]}]},{"name":"National Key Research and Development Program of China","award":["IUK 104985"],"award-info":[{"award-number":["IUK 104985"]}]},{"name":"Department of Health and Social Care, UK","award":["2018YFE0101300"],"award-info":[{"award-number":["2018YFE0101300"]}]},{"name":"Department of Health and Social Care, UK","award":["IUK 104985"],"award-info":[{"award-number":["IUK 104985"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Vaccines"],"abstract":"<jats:p>Background:\u00a0Streptococcus suis (S. suis) is a Gram-positive bacterium that causes substantial disease in pigs. S. suis is also an emerging zoonoses in humans, primarily in Asia, through the consumption of undercooked pork and the handling of infected pig meat as well as carcasses. The complexity of S. suis epidemiology, characterized by the presence of multiple bacterial serotypes and strains with diverse sequence types, identifies a critical need for a universal vaccine with the ability to confer cross-protective immunity. Highly conserved immunogenic proteins are generally considered good candidate antigens for subunit universal vaccines. Methods: In this study, the cross-protection of the sugar ABC transporter substrate-binding protein (S-ABC), a surface-associated immunogenic protein of S. suis, was examined in mice for evaluation as a universal vaccine candidate. Results: S-ABC was shown to be highly conserved, with 97% amino acid sequence identity across 31 S. suis strains deposited in GenBank. Recombinantly expressed S-ABC (rS-ABC) was recognized via rabbit sera specific to S. suis serotype 2. The immunization of mice with rS-ABC induced antigen-specific antibody responses, as well as IFN-\u03b3 and IL-4, in multiple organs, including the lungs. rS-ABC immunization conferred high (87.5% and 100%) protection against challenges with S. suis serotypes 2 and 9, demonstrating high cross-protection against these serotypes. Protection, albeit lower (50%), was also observed in mice challenged with S. suis serotype 7. Conclusions: These data identify S-ABC as a promising antigenic target within a universal subunit vaccine against S. suis.<\/jats:p>","DOI":"10.3390\/vaccines12050544","type":"journal-article","created":{"date-parts":[[2024,5,16]],"date-time":"2024-05-16T03:24:48Z","timestamp":1715829888000},"page":"544","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Immunogenicity and Protective Capacity of Sugar ABC Transporter Substrate-Binding Protein against Streptococcus suis Serotype 2, 7 and 9 Infection in Mice"],"prefix":"10.3390","volume":"12","author":[{"given":"Zujie","family":"Yan","sequence":"first","affiliation":[{"name":"Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai 200241, China"},{"name":"College of Veterinary Medicine, Hebei Agricultural University, Baoding 071000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ruyi","family":"Pan","sequence":"additional","affiliation":[{"name":"Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai 200241, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Junjie","family":"Zhang","sequence":"additional","affiliation":[{"name":"Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai 200241, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jianhe","family":"Sun","sequence":"additional","affiliation":[{"name":"Shanghai Key Laboratory of Veterinary Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2477-4874","authenticated-orcid":false,"given":"Xiaochun","family":"Ma","sequence":"additional","affiliation":[{"name":"Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai 200241, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nihua","family":"Dong","sequence":"additional","affiliation":[{"name":"Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai 200241, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaohui","family":"Yao","sequence":"additional","affiliation":[{"name":"Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai 200241, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3246-6273","authenticated-orcid":false,"given":"Jianchao","family":"Wei","sequence":"additional","affiliation":[{"name":"Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai 200241, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ke","family":"Liu","sequence":"additional","affiliation":[{"name":"Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai 200241, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4211-0817","authenticated-orcid":false,"given":"Yafeng","family":"Qiu","sequence":"additional","affiliation":[{"name":"Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai 200241, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Katie","family":"Sealey","sequence":"additional","affiliation":[{"name":"School of Cellular and Molecular Medicine, University of Bristol, University Walk, Bristol BS8 1TD, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6814-4364","authenticated-orcid":false,"given":"Hester","family":"Nichols","sequence":"additional","affiliation":[{"name":"The Vaccine Group Ltd., Plymouth PL6 8BU, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael A.","family":"Jarvis","sequence":"additional","affiliation":[{"name":"The Vaccine Group Ltd., Plymouth PL6 8BU, UK"},{"name":"School of Biomedical Sciences, University of Plymouth, Plymouth PL4 8AA, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4287-6396","authenticated-orcid":false,"given":"Mathew","family":"Upton","sequence":"additional","affiliation":[{"name":"School of Biomedical Sciences, University of Plymouth, Plymouth PL4 8AA, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4635-1602","authenticated-orcid":false,"given":"Xiangdong","family":"Li","sequence":"additional","affiliation":[{"name":"School of Biomedical Sciences, University of Plymouth, Plymouth PL4 8AA, UK"},{"name":"College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhiyong","family":"Ma","sequence":"additional","affiliation":[{"name":"Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai 200241, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9065-1514","authenticated-orcid":false,"given":"Juxiang","family":"Liu","sequence":"additional","affiliation":[{"name":"College of Veterinary Medicine, Hebei Agricultural University, Baoding 071000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4134-4024","authenticated-orcid":false,"given":"Beibei","family":"Li","sequence":"additional","affiliation":[{"name":"Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai 200241, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,5,15]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"381","DOI":"10.1023\/A:1005870317757","article-title":"Streptococcus Suis: Past and Present","volume":"21","author":"Staats","year":"1997","journal-title":"Vet. 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