ArticleInfection and immunity2001
Major outer membrane protein Omp25 of Brucella suis is involved in inhibition of tumor necrosis factor alpha production during infection of human macrophages.
Article in Infection and immunity, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.
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Who cites it
47 citing papers in PubMed, 105 citations in OpenAlex.
- Brucella Omp25 activates the unfolded protein response to promote intracellular proliferation and inflammation.The Journal of biological chemistry · 2026Article
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- Brucellosis: Bacteriology, pathogenesis, epidemiology and role of the metallophores in virulence: a review.Frontiers in cellular and infection microbiology · 2025Review
- Beyond survival to domination:Frontiers in microbiology · 2025Review
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- A Germin-Like Protein GLP1 of Legumes Mediates Symbiotic Nodulation by Interacting with an Outer Membrane Protein of Rhizobia.Microbiology spectrum · 2023Article
- Design of a multi-epitope vaccine against brucellosis fused to IgG-fc by an immunoinformatics approach.Frontiers in veterinary science · 2023Article
- The outer membrane proteins based seroprevalence strategy forFrontiers in cellular and infection microbiology · 2023Article
- Immunization with a combination of recombinant Brucella abortus proteins induces T helper immune response and confers protection against wild-type challenge in BALB/c mice.Microbial biotechnology · 2022Article
- Host F-Box Protein 22 Enhances the Uptake of Brucella by Macrophages and Drives a Sustained Release of Proinflammatory Cytokines through Degradation of the Anti-Inflammatory Effector Proteins of Brucella.Infection and immunity · 2022Article
- Tumor Necrosis Factor Alpha Contributes to Inflammatory Pathology in the Placenta during Brucella abortus Infection.Infection and immunity · 2022Article
- Case Report: Suspected Case ofFrontiers in immunology · 2022Article
- A gene expression map of host immune response in human brucellosis.Frontiers in immunology · 2022Article
- Uncovering the Hidden Credentials ofMicrobiology and molecular biology reviews : MMBR · 2021Review
- Article
- Dendritic cells and Brucella spp. interaction: the sentinel host and the stealthy pathogen.Folia microbiologica · 2020Review
- Alterations of microRNAs and their predicted targeting mRNAs expression in RAW264.7 macrophages infected with Omp25 mutant Brucella melitensis.Innate immunity · 2018Article
- Diagnostic potential ofCentral-European journal of immunology · 2018Article
- Outer Membrane Protein 25 ofFrontiers in veterinary science · 2017Article
Corrections and comments
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Authors and funding
11 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Brucella spp. can establish themselves and cause disease in humans and animals. The mechanisms by which Brucella spp. evade the antibacterial defenses of their host, however, remain largely unknown. We have previously reported that live brucellae failed to induce tumor necrosis factor alpha (TNF-alpha) production upon human macrophage infection. This inhibition is associated with a nonidentified protein that is released into culture medium. Outer membrane proteins (OMPs) of gram-negative bacteria have been shown to modulate macrophage functions, including cytokine production. Thus, we have analyzed the effects of two major OMPs (Omp25 and Omp31) of Brucella suis 1330 (wild-type [WT] B. suis) on TNF-alpha production. For this purpose, omp25 and omp31 null mutants of B. suis (Deltaomp25 B. suis and Deltaomp31 B. suis, respectively) were constructed and analyzed for the ability to activate human macrophages to secrete TNF-alpha. We showed that, in contrast to WT B. suis or Deltaomp31 B. suis, Deltaomp25 B. suis induced TNF-alpha production when phagocytosed by human macrophages. The complementation of Deltaomp25 B. suis with WT omp25 (Deltaomp25-omp25 B. suis mutant) significantly reversed this effect: Deltaomp25-omp25 B. suis-infected macrophages secreted significantly less TNF-alpha than did macrophages infected with the Deltaomp25 B. suis mutant. Furthermore, pretreatment of WT B. suis with an anti-Omp25 monoclonal antibody directed against an epitope exposed at the surface of the bacteria resulted in substancial TNF-alpha production during macrophage infection. These observations demonstrated that Omp25 of B. suis is involved in the negative regulation of TNF-alpha production upon infection of human macrophages.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.