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Marchesini MI, Spera JM, Comerci DJ. The 'ins and outs' of Brucella intracellular journey. Curr Opin Microbiol 2024; 78:102427. [PMID: 38309247 DOI: 10.1016/j.mib.2024.102427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/27/2023] [Accepted: 01/04/2024] [Indexed: 02/05/2024]
Abstract
Members of the genus Brucella are the causative agents of brucellosis, a worldwide zoonosis affecting wild and domestic animals and humans. These facultative intracellular pathogens cause long-lasting chronic infections by evolving sophisticated strategies to counteract, evade, or subvert host bactericidal mechanisms in order to establish a secure replicative niche necessary for their survival. In this review, we present recent findings on selected Brucella effectors to illustrate how this pathogen modulates host cell signaling pathways to gain control of the vacuole, promote the formation of a safe intracellular replication niche, alter host cell metabolism to its advantage, and exploit various cellular pathways to ensure egress from the infected cell.
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Affiliation(s)
- María I Marchesini
- Instituto de Investigaciones Biotecnológicas, Universidad Nacional de San Martín (UNSAM)-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Escuela de Bio y Nanotecnologías (EByN), Universidad Nacional de San Martín, San Martín, Buenos Aires, Argentina
| | - Juan M Spera
- Instituto de Investigaciones Biotecnológicas, Universidad Nacional de San Martín (UNSAM)-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Escuela de Bio y Nanotecnologías (EByN), Universidad Nacional de San Martín, San Martín, Buenos Aires, Argentina
| | - Diego J Comerci
- Instituto de Investigaciones Biotecnológicas, Universidad Nacional de San Martín (UNSAM)-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Escuela de Bio y Nanotecnologías (EByN), Universidad Nacional de San Martín, San Martín, Buenos Aires, Argentina; Comisión Nacional de Energía Atómica, Grupo Pecuario, Centro Atómico Ezeiza, Buenos Aires, Argentina.
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Valguarnera E, Spera JM, Czibener C, Fulgenzi FR, Casabuono AC, Altabe SG, Pasquevich KA, Guaimas F, Cassataro J, Couto AS, Ugalde JE. RomA, A Periplasmic Protein Involved in the Synthesis of the Lipopolysaccharide, Tunes Down the Inflammatory Response Triggered by Brucella. J Infect Dis 2018; 217:1257-1266. [DOI: 10.1093/infdis/jiy002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Accepted: 01/05/2018] [Indexed: 12/25/2022] Open
Affiliation(s)
- Ezequiel Valguarnera
- Instituto de Investigaciones Biotecnológicas “Dr. Rodolfo A. Ugalde,” IIB-INTECH, CONICET, Universidad Nacional de San Martín, San Martín, Buenos Aires
| | - Juan M Spera
- Instituto de Investigaciones Biotecnológicas “Dr. Rodolfo A. Ugalde,” IIB-INTECH, CONICET, Universidad Nacional de San Martín, San Martín, Buenos Aires
| | - Cecilia Czibener
- Instituto de Investigaciones Biotecnológicas “Dr. Rodolfo A. Ugalde,” IIB-INTECH, CONICET, Universidad Nacional de San Martín, San Martín, Buenos Aires
| | - Fabiana R Fulgenzi
- Instituto de Investigaciones Biotecnológicas “Dr. Rodolfo A. Ugalde,” IIB-INTECH, CONICET, Universidad Nacional de San Martín, San Martín, Buenos Aires
| | - Adriana C Casabuono
- Facultad de Ciencias Exactas y Naturales. Departamento de Química Orgánica–Consejo Nacional de lnvestigaciones Científicas y Técnicas, Centro de Investigación en Hidratos de Carbono (CIHIDECAR), Universidad de Buenos Aires, Buenos Aires
| | - Silvia G Altabe
- Instituto de Biología Molecular y Celular de Rosario (IBR) and Departamento de Microbiología, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Santa Fe, Argentina
| | - Karina A Pasquevich
- Instituto de Investigaciones Biotecnológicas “Dr. Rodolfo A. Ugalde,” IIB-INTECH, CONICET, Universidad Nacional de San Martín, San Martín, Buenos Aires
| | - Francisco Guaimas
- Instituto de Investigaciones Biotecnológicas “Dr. Rodolfo A. Ugalde,” IIB-INTECH, CONICET, Universidad Nacional de San Martín, San Martín, Buenos Aires
| | - Juliana Cassataro
- Instituto de Investigaciones Biotecnológicas “Dr. Rodolfo A. Ugalde,” IIB-INTECH, CONICET, Universidad Nacional de San Martín, San Martín, Buenos Aires
| | - Alicia S Couto
- Facultad de Ciencias Exactas y Naturales. Departamento de Química Orgánica–Consejo Nacional de lnvestigaciones Científicas y Técnicas, Centro de Investigación en Hidratos de Carbono (CIHIDECAR), Universidad de Buenos Aires, Buenos Aires
| | - Juan E Ugalde
- Instituto de Investigaciones Biotecnológicas “Dr. Rodolfo A. Ugalde,” IIB-INTECH, CONICET, Universidad Nacional de San Martín, San Martín, Buenos Aires
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Roset MS, Ibañez AE, de Souza Filho JA, Spera JM, Minatel L, Oliveira SC, Giambartolomei GH, Cassataro J, Briones G. Brucella cyclic β-1,2-glucan plays a critical role in the induction of splenomegaly in mice. PLoS One 2014; 9:e101279. [PMID: 24983999 PMCID: PMC4077732 DOI: 10.1371/journal.pone.0101279] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Accepted: 06/05/2014] [Indexed: 01/28/2023] Open
Abstract
Brucella, the etiological agent of animal and human brucellosis, is a bacterium with the capacity to modulate the inflammatory response. Cyclic β-1,2-glucan (CβG) is a virulence factor key for the pathogenesis of Brucella as it is involved in the intracellular life cycle of the bacteria. Using comparative studies with different CβG mutants of Brucella, cgs (CβG synthase), cgt (CβG transporter) and cgm (CβG modifier), we have identified different roles for this polysaccharide in Brucella. While anionic CβG is required for bacterial growth in low osmolarity conditions, the sole requirement for a successful Brucella interaction with mammalian host is its transport to periplasmic space. Our results uncover a new role for CβG in promoting splenomegaly in mice. We showed that CβG-dependent spleen inflammation is the consequence of massive cell recruitment (monocytes, dendritics cells and neutrophils) due to the induction of pro-inflammatory cytokines such as IL-12 and TNF-α and also that the reduced splenomegaly response observed with the cgs mutant is not the consequence of changes in expression levels of the characterized Brucella PAMPs LPS, flagellin or OMP16/19. Complementation of cgs mutant with purified CβG increased significantly spleen inflammation response suggesting a direct role for this polysaccharide.
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Affiliation(s)
- Mara S. Roset
- Instituto de Investigaciones Biotecnológicas “Rodolfo Ugalde” - Instituto Tecnológico de Chascomús (IIB-INTECH), Universidad Nacional de San Martín (UNSAM), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- * E-mail: (GB); (MSR)
| | - Andrés E. Ibañez
- Laboratorio de Inmunogenética, INIGEM-CONICET, Hospital de Clínicas “José de San Martín,” Facultad de Medicina, Universidad de Buenos Aires (UBA), Buenos Aires, Argentina
| | - Job Alves de Souza Filho
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Juan M. Spera
- Instituto de Investigaciones Biotecnológicas “Rodolfo Ugalde” - Instituto Tecnológico de Chascomús (IIB-INTECH), Universidad Nacional de San Martín (UNSAM), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Leonardo Minatel
- Instituto de Investigaciones Biotecnológicas “Rodolfo Ugalde” - Instituto Tecnológico de Chascomús (IIB-INTECH), Universidad Nacional de San Martín (UNSAM), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Sergio C. Oliveira
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Guillermo H. Giambartolomei
- Laboratorio de Inmunogenética, INIGEM-CONICET, Hospital de Clínicas “José de San Martín,” Facultad de Medicina, Universidad de Buenos Aires (UBA), Buenos Aires, Argentina
| | - Juliana Cassataro
- Instituto de Investigaciones Biotecnológicas “Rodolfo Ugalde” - Instituto Tecnológico de Chascomús (IIB-INTECH), Universidad Nacional de San Martín (UNSAM), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Gabriel Briones
- Instituto de Investigaciones Biotecnológicas “Rodolfo Ugalde” - Instituto Tecnológico de Chascomús (IIB-INTECH), Universidad Nacional de San Martín (UNSAM), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- * E-mail: (GB); (MSR)
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Spera JM, Comerci DJ, Ugalde JE. Brucella alters the immune response in a prpA-dependent manner. Microb Pathog 2014; 67-68:8-13. [PMID: 24508400 DOI: 10.1016/j.micpath.2014.01.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Revised: 01/15/2014] [Accepted: 01/27/2014] [Indexed: 01/18/2023]
Abstract
Brucellosis, a disease caused by the gram-negative bacterium Brucella spp., is a widespread zoonosis that inflicts important animal and human health problems, especially in developing countries. One of the hallmarks of Brucella infection is its capacity to establish a chronic infection, characteristic that depends on a wide repertoire of virulence factors among which are immunomodulatory proteins such as PrpA (encoding the proline racemase protein A or hydroxyproline-2-epimerase), involved in the establishment of the chronic phase of the infectious process that we have previously identified and characterized. We report here that, in vivo, Brucella abortus prpA is responsible for an increment in the B-cell number and in the specific antibody response and that these antibodies promote cell infection. We additionally found that Brucella alters the cytokine levels of IFN-γ, IL-10, TGFβ1 and TNFα during the acute phase of the infectious process in a prpA dependent manner.
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Affiliation(s)
- Juan M Spera
- Instituto de Investigaciones Biotecnológicas "Dr. Rodolfo A. Ugalde", Instituto Tecnológico de Chascomús, IIB-INTECH, CONICET, Universidad Nacional de San Martín, San Martín, Buenos Aires, Argentina
| | - Diego J Comerci
- Instituto de Investigaciones Biotecnológicas "Dr. Rodolfo A. Ugalde", Instituto Tecnológico de Chascomús, IIB-INTECH, CONICET, Universidad Nacional de San Martín, San Martín, Buenos Aires, Argentina
| | - Juan E Ugalde
- Instituto de Investigaciones Biotecnológicas "Dr. Rodolfo A. Ugalde", Instituto Tecnológico de Chascomús, IIB-INTECH, CONICET, Universidad Nacional de San Martín, San Martín, Buenos Aires, Argentina.
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Spera JM, Herrmann CK, Roset MS, Comerci DJ, Ugalde JE. A Brucella virulence factor targets macrophages to trigger B-cell proliferation. J Biol Chem 2013; 288:20208-16. [PMID: 23720774 DOI: 10.1074/jbc.m113.453282] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Brucella spp. and Trypanosoma cruzi are two intracellular pathogens that have no evolutionary common origins but share a similar lifestyle as they establish chronic infections for which they have to circumvent the host immune response. Both pathogens have a virulence factor (prpA in Brucella and tcPrac in T. cruzi) that induces B-cell proliferation and promotes the establishment of the chronic phase of the infectious process. We show here that, even though PrpA promotes B-cell proliferation, it targets macrophages in vitro and is translocated to the cytoplasm during the intracellular replication phase. We observed that PrpA-treated macrophages induce the secretion of a soluble factor responsible for B-cell proliferation and identified nonmuscular myosin IIA (NMM-IIA) as a receptor required for binding and function of this virulence factor. Finally, we show that the Trypanosoma cruzi homologue of PrpA also targets macrophages to induce B-cell proliferation through the same receptor, indicating that this virulence strategy is conserved between a bacterial and a protozoan pathogen.
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Affiliation(s)
- Juan M Spera
- Instituto de Investigaciones Biotecnológicas Dr. Rodolfo A. Ugalde, IIB-INTECH, National Research Council of Argentina (CONICET), Universidad Nacional de San Martín, San Martín 1650, Buenos Aires, Argentina
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Posadas DM, Martín FA, Sabio y García JV, Spera JM, Delpino MV, Baldi P, Campos E, Cravero SL, Zorreguieta A. The TolC homologue of Brucella suis is involved in resistance to antimicrobial compounds and virulence. Infect Immun 2006; 75:379-89. [PMID: 17088356 PMCID: PMC1828412 DOI: 10.1128/iai.01349-06] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Brucella spp., like other pathogens, must cope with the environment of diverse host niches during the infection process. In doing this, pathogens evolved different type of transport systems to help them survive and disseminate within the host. Members of the TolC family have been shown to be involved in the export of chemically diverse molecules ranging from large protein toxins to small toxic compounds. The role of proteins from the TolC family in Brucella and other alpha-2-proteobacteria has been explored little. The gene encoding the unique member of the TolC family from Brucella suis (BepC) was cloned and expressed in an Escherichia coli mutant disrupted in the gene encoding TolC, which has the peculiarity of being involved in diverse transport functions. BepC fully complemented the resistance to drugs such as chloramphenicol and acriflavine but was incapable of restoring hemolysin secretion in the tolC mutant of E. coli. An insertional mutation in the bepC gene strongly affected the resistance phenotype of B. suis to bile salts and toxic chemicals such as ethidium bromide and rhodamine and significantly decreased the resistance to antibiotics such as erythromycin, ampicillin, tetracycline, and norfloxacin. Moreover, the B. suis bepC mutant was attenuated in the mouse model of infection. Taken together, these results suggest that BepC-dependent efflux processes of toxic compounds contribute to B. suis survival inside the host.
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Affiliation(s)
- Diana M Posadas
- Fundación Instituto Leloir, Patricias Argentinas 435, C1405BWE Buenos Aires, Argentina
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