{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,3]],"date-time":"2026-08-03T19:06:18Z","timestamp":1785783978690,"version":"3.56.0"},"reference-count":53,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2023,12,12]],"date-time":"2023-12-12T00:00:00Z","timestamp":1702339200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Purdue Veterinary Medicine (P.V.M.) Research Funds (College of Veterinary Medicine)","award":["IND00148943"],"award-info":[{"award-number":["IND00148943"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Microorganisms"],"abstract":"<jats:p>Fusobacterium necrophorum, an anaerobic Gram-negative pathogen, causes necrotic cattle infections, impacting livestock health and the US feedlot industry. Antibiotic administration is the mainstay for treating F. necrophorum infections, although resistance hampers their effectiveness. Vaccination, especially targeting outer membrane proteins (OMPs) due to their antigenic properties and host specificity, offers an alternative to antibiotics. This study identified high-binding-affinity adhesion proteins from F. necrophorum using binding and pull-down assays with bovine adrenal gland endothelial cells (EJG). Four OMP candidates (17.5 kDa\/OmpH, 22.7 kDa\/OmpA, 66.3 kDa\/cell surface protein (CSP), and a previously characterized 43 kDa OMP) were expressed as recombinant proteins and purified. Rabbit polyclonal antibodies to recombinant OMPs were generated, and their ability to inhibit bacterial binding in vitro was assessed. The results show that treatment with individual polyclonal antibodies against 43 kDa significantly inhibited bacterial adhesion, while other antibodies were less potent. However, combinations of two or more antibodies showed a more prominent inhibitory effect on host-cell adhesion. Thus, our findings suggest that the identified OMPs are involved in fusobacterial attachment to host cells and may have the potential to be leveraged in combination for vaccine development. Future in vivo studies are needed to validate their roles and test the feasibility of an OMP-based subunit vaccine against fusobacterial infections.<\/jats:p>","DOI":"10.3390\/microorganisms11122968","type":"journal-article","created":{"date-parts":[[2023,12,12]],"date-time":"2023-12-12T04:28:31Z","timestamp":1702355311000},"page":"2968","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Characterization of Three New Outer Membrane Adhesion Proteins in Fusobacterium necrophorum"],"prefix":"10.3390","volume":"11","author":[{"given":"Prabha K.","family":"Bista","sequence":"first","affiliation":[{"name":"Department of Comparative Pathobiology, Purdue University, West Lafayette, IN 47907, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Deepti","family":"Pillai","sequence":"additional","affiliation":[{"name":"Department of Comparative Pathobiology, Purdue University, West Lafayette, IN 47907, USA"},{"name":"Indiana Animal Disease and Diagnostic Laboratory, Purdue University, West Lafayette, IN 47907, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sanjeev K.","family":"Narayanan","sequence":"additional","affiliation":[{"name":"Department of Comparative Pathobiology, Purdue University, West Lafayette, IN 47907, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,12,12]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"239","DOI":"10.1016\/j.anaerobe.2005.01.007","article-title":"Fusobacterium Necrophorum Infections in Animals: Pathogenesis and Pathogenic Mechanisms","volume":"11","author":"Nagaraja","year":"2005","journal-title":"Anaerobe"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"36","DOI":"10.1016\/j.anaerobe.2008.05.005","article-title":"Fusobacterium Necrophorum: A Ruminal Bacterium That Invades Liver to Cause Abscesses in Cattle","volume":"15","author":"Tadepalli","year":"2009","journal-title":"Anaerobe"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"14429","DOI":"10.1038\/s41598-019-50822-9","article-title":"Sites of Persistence of Fusobacterium Necrophorum and Dichelobacter Nodosus: A Paradigm Shift in Understanding the Epidemiology of Footrot in Sheep","volume":"9","author":"Clifton","year":"2019","journal-title":"Sci. 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