{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,24]],"date-time":"2026-01-24T12:08:20Z","timestamp":1769256500783,"version":"3.49.0"},"reference-count":83,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2026,1,17]],"date-time":"2026-01-17T00:00:00Z","timestamp":1768608000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100007865","name":"UTMB","doi-asserted-by":"publisher","award":["N\/A"],"award-info":[{"award-number":["N\/A"]}],"id":[{"id":"10.13039\/100007865","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000060","name":"National Institute of Allergy and Infectious Diseases","doi-asserted-by":"publisher","award":["T32AI060549"],"award-info":[{"award-number":["T32AI060549"]}],"id":[{"id":"10.13039\/100000060","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000060","name":"National Institute of Allergy and Infectious Diseases","doi-asserted-by":"publisher","award":["1F31AI191684"],"award-info":[{"award-number":["1F31AI191684"]}],"id":[{"id":"10.13039\/100000060","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Microorganisms"],"abstract":"<jats:p>Burkholderia pseudomallei complex and B. cepacia complex are two evolutionary distinct clades of pathogens causing human disease. Most vaccine efforts have focused on the former group largely due to their biothreat status and global disease burden. It has been proposed that a vaccine could be developed that simultaneously protects against both groups of Burkholderia by specifically targeting conserved antigens. Only a few studies have set out to identify which antigens may be optimal targets for such a vaccine. We have previously assessed the ability of three highly conserved B. pseudomallei antigens, namely OmpA1, OmpA2, and Pal, coupled to gold nanoparticle vaccines, to protect mice against a homotypic B. pseudomallei challenge. Here, we have expanded our study by demonstrating that antibodies to each of these proteins show varying levels of reactivity to homologues in B. cepacia complex, with OmpA2 antibodies exhibiting the highest cross-reactivity. Remarkably, some nanovaccine immunized mice, particularly those that received OmpA2, produced antibodies that bind Pseudomonas aeruginosa, which harbors distantly related homologous proteins. T cells elicited to Pal and OmpA2 responded to stimulation with B. cepacia complex-derived homologues. Our study supports incorporation of these antigens, particularly OmpA2, for the development of a pan-Burkholderia vaccine.<\/jats:p>","DOI":"10.3390\/microorganisms14010221","type":"journal-article","created":{"date-parts":[[2026,1,19]],"date-time":"2026-01-19T08:23:56Z","timestamp":1768811036000},"page":"221","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Antibodies to Burkholderia pseudomallei Outer Membrane Proteins Coupled to Nanovaccines Exhibit Cross-Reactivity to B. cepacia Complex and Pseudomonas aeruginosa Homologues"],"prefix":"10.3390","volume":"14","author":[{"given":"Alexander J.","family":"Badten","sequence":"first","affiliation":[{"name":"Department of Microbiology & Immunology, University of Texas Medical Branch, Galveston, TX 77555, USA"},{"name":"Institute for Translational Sciences, University of Texas Medical Branch, Galveston, TX 77555, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Susana","family":"Oaxaca-Torres","sequence":"additional","affiliation":[{"name":"Department of Microbiology & Immunology, University of Texas Medical Branch, Galveston, TX 77555, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6450-0643","authenticated-orcid":false,"given":"Alfredo G.","family":"Torres","sequence":"additional","affiliation":[{"name":"Department of Microbiology & Immunology, University of Texas Medical Branch, Galveston, TX 77555, USA"},{"name":"Office of Faculty Affairs and Development, Meharry Medical College, Nashville, TN 37208, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2026,1,17]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2790","DOI":"10.1128\/AEM.67.6.2790-2798.2001","article-title":"Burkholderia, a Genus Rich in Plant-Associated Nitrogen Fixers with Wide Environmental and Geographic Distribution","volume":"67","year":"2001","journal-title":"Appl. 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