1
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Hota S, Hussain MS, Kumar M. ErpY-like Lipoprotein of Leptospira Outsmarts Host Complement Regulation by Acquiring Complement Regulators, Activating Alternative Pathways, and Intervening in the Membrane Attack Complex. ACS Infect Dis 2022; 8:982-997. [PMID: 35422118 DOI: 10.1021/acsinfecdis.1c00602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The survival of pathogenic Leptospira in the host depends on its proficiency to circumvent the immune response. These pathogens evade the complement system in serum by enticing and amassing the serum complement regulators onto their surface. ErpY-like lipoprotein, a surface-exposed protein of Leptospira spp., is conserved in the pathogenic Leptospira serovars. The recombinant form of this protein interacts with multiple extracellular matrix (ECM) components and serum proteins such as soluble complement regulators factor H (FH) and factor I (FI). Here, we document that the supplementation of rErpY-like protein (10 μg/mL) in human serum inhibits complement-mediated bacterial cell lysis and augments the viability of Escherichia coli and saprophytic Leptospira biflexa by more than two-fold. Complement regulators FH and FI, when bound to rErpY-like protein, preserve their respective cofactor and protease activity and cleave the complement component C3b. The supplementation of rErpY-like protein (40 μg/mL) in serum ensued in an ∼90% reduction of membrane attack complex (C5b-9/MAC) deposition through the alternative pathway (AP) of complement activation. However, rErpY-like protein could moderately reduce (∼16%) MAC deposition in serum through the classical pathway (CP). In addition, the rErpY-like protein solely initiated the AP, suggesting its role in the rapid consumption and depletion of the complement components. Blocking the pathogenic Leptospira interrogans surface with anti-rErpY-like antibodies resulted in an increase in MAC formation on the bacterial surface, indicating a specific role of the ErpY-like lipoprotein in complement-mediated immune evasion. This study underscores the role of the ErpY-like lipoprotein of Leptospira in complement evasion.
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Affiliation(s)
- Saswat Hota
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Md Saddam Hussain
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Manish Kumar
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
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2
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Daroz BB, Fernandes LGV, Cavenague MF, Kochi LT, Passalia FJ, Takahashi MB, Nascimento Filho EG, Teixeira AF, Nascimento ALTO. A Review on Host- Leptospira Interactions: What We Know and Future Expectations. Front Cell Infect Microbiol 2021; 11:777709. [PMID: 34900757 PMCID: PMC8657130 DOI: 10.3389/fcimb.2021.777709] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 11/04/2021] [Indexed: 01/01/2023] Open
Abstract
Leptospirosis is a widespread zoonosis caused by pathogenic Leptospira spp. It is considered a neglected infectious disease of human and veterinary concern. Our group has been investigating proteins annotated as hypothetical, predicted to be located on the leptospiral surface. Because of their location, these proteins may have the ability to interact with various host components, which could allow establishment of the infection. These proteins act as adherence factors by binding to host receptor molecules, such as the extracellular matrix (ECM) components laminin and glycosaminoglycans to help bacterial colonization. Leptospira also interacts with the host fibrinolytic system, which has been demonstrated to be a powerful tool for invasion mechanisms. The interaction with fibrinogen and thrombin has been shown to reduce fibrin clot formation. Additionally, the degradation of coagulation cascade components by secreted proteases or by acquired surface plasmin could also play a role in reducing clot formation, hence facilitating dissemination during infection. Interaction with host complement system regulators also plays a role in helping bacteria to evade the immune system, facilitating invasion. Interaction of Leptospira to cell receptors, such as cadherins, can contribute to investigate molecules that participate in virulence. To achieve a better understanding of the host-pathogen interaction, leptospiral mutagenesis tools have been developed and explored. This work presents several proteins that mediate binding to components of the ECM, plasma, components of the complement system and cells, to gather research achievements that can be helpful in better understanding the mechanisms of leptospiral-host interactions and discuss genetic manipulation for Leptospira spp. aimed at protein function validation.
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Affiliation(s)
- Brenda B Daroz
- Laboratorio de Desenvolvimento de Vacinas, Instituto Butantan, Avenida Vital Brazil, Sao Paulo, Brazil.,Programa de Pos-Graduacao Interunidades em Biotecnologia, Instituto de Ciencias Biomedicas, Universidade de São Paulo, Sao Paulo, Brazil
| | - Luis G V Fernandes
- Laboratorio de Desenvolvimento de Vacinas, Instituto Butantan, Avenida Vital Brazil, Sao Paulo, Brazil
| | - Maria F Cavenague
- Laboratorio de Desenvolvimento de Vacinas, Instituto Butantan, Avenida Vital Brazil, Sao Paulo, Brazil.,Programa de Pos-Graduacao Interunidades em Biotecnologia, Instituto de Ciencias Biomedicas, Universidade de São Paulo, Sao Paulo, Brazil
| | - Leandro T Kochi
- Laboratorio de Desenvolvimento de Vacinas, Instituto Butantan, Avenida Vital Brazil, Sao Paulo, Brazil.,Programa de Pos-Graduacao Interunidades em Biotecnologia, Instituto de Ciencias Biomedicas, Universidade de São Paulo, Sao Paulo, Brazil
| | - Felipe J Passalia
- Laboratorio de Desenvolvimento de Vacinas, Instituto Butantan, Avenida Vital Brazil, Sao Paulo, Brazil.,Programa de Pos-Graduacao Interunidades em Biotecnologia, Instituto de Ciencias Biomedicas, Universidade de São Paulo, Sao Paulo, Brazil
| | - Maria B Takahashi
- Laboratorio de Desenvolvimento de Vacinas, Instituto Butantan, Avenida Vital Brazil, Sao Paulo, Brazil.,Programa de Pos-Graduacao Interunidades em Biotecnologia, Instituto de Ciencias Biomedicas, Universidade de São Paulo, Sao Paulo, Brazil
| | - Edson G Nascimento Filho
- Laboratorio de Desenvolvimento de Vacinas, Instituto Butantan, Avenida Vital Brazil, Sao Paulo, Brazil.,Programa de Pos-Graduacao Interunidades em Biotecnologia, Instituto de Ciencias Biomedicas, Universidade de São Paulo, Sao Paulo, Brazil
| | - Aline F Teixeira
- Laboratorio de Desenvolvimento de Vacinas, Instituto Butantan, Avenida Vital Brazil, Sao Paulo, Brazil
| | - Ana L T O Nascimento
- Laboratorio de Desenvolvimento de Vacinas, Instituto Butantan, Avenida Vital Brazil, Sao Paulo, Brazil.,Programa de Pos-Graduacao Interunidades em Biotecnologia, Instituto de Ciencias Biomedicas, Universidade de São Paulo, Sao Paulo, Brazil
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3
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MB T, AF T, ALTO N. The leptospiral LipL21 and LipL41 proteins exhibit a broad spectrum of interactions with host cell components. Virulence 2021; 12:2798-2813. [PMID: 34719356 PMCID: PMC8632080 DOI: 10.1080/21505594.2021.1993427] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 09/08/2021] [Accepted: 10/08/2021] [Indexed: 01/09/2023] Open
Abstract
Leptospirosis is a globally prevalent zoonotic disease, and is caused by pathogenic spirochetes from the genus Leptospira. LipL21 and LipL41 are lipoproteins expressed strongly on the outer membrane of pathogenic Leptospira spp. Many studies have shown that both proteins are interesting targets for vaccines and diagnosis. However, their role in host-pathogen interactions remains underexplored. Therefore, we evaluated the capacity of LipL21 and LipL41 to bind with glycosaminoglycans (GAGs), the cell receptors and extracellular matrix, and plasma components by ELISA. Both proteins interacted with collagen IV, laminin, E-cadherin, and elastin dose-dependently. A broad-spectrum binding to plasma components was also observed. Only LipL21 interacted with all the GAG components tested, whereas LipL41 presented a concentration-dependent binding only for chondroitin 4 sulfate. Although, both proteins have the ability to interact with fibrinogen, only LipL21 inhibited fibrin clot formation partially. Both proteins exhibited a decrease in plasminogen binding in the presence of amino caproic acid (ACA), a competitive inhibitor of lysine residues, suggesting that their binding occurs via the kringle domains of plasminogen. LipL41, but not LipL21, was able to convert plasminogen to plasmin, and recruit plasminogen from normal human serum, suggesting that the interaction of this protein with plasminogen may occur in physiological conditions. This work provides the first report demonstrating the capacity of LipL21 and LipL41 to interact with a broad range of host components, highlighting their importance in host-Leptospira interactions.
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Affiliation(s)
- Takahashi MB
- Laboratório de Desenvolvimento de Vacinas, Instituto Butantan, São Paulo, Brazil
- Programa de Pós-Graduação Interunidades Em Biotecnologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Teixeira AF
- Laboratório de Desenvolvimento de Vacinas, Instituto Butantan, São Paulo, Brazil
| | - Nascimento ALTO
- Laboratório de Desenvolvimento de Vacinas, Instituto Butantan, São Paulo, Brazil
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4
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Passalia FJ, Heinemann MB, Vieira ML, Nascimento ALTO. A Novel Leptospira interrogans Protein LIC13086 Inhibits Fibrin Clot Formation and Interacts With Host Components. Front Cell Infect Microbiol 2021; 11:708739. [PMID: 34277477 PMCID: PMC8280789 DOI: 10.3389/fcimb.2021.708739] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 06/08/2021] [Indexed: 11/13/2022] Open
Abstract
Leptospirosis is a neglected zoonosis, caused by pathogenic spirochetes bacteria of the genus Leptospira. The molecular mechanisms of leptospirosis infection are complex, and it is becoming clear that leptospires express several functionally redundant proteins to invade, disseminate, and escape the host’s immune response. Here, we describe a novel leptospiral protein encoded by the gene LIC13086 as an outer membrane protein. The recombinant protein LIC13086 can interact with the extracellular matrix component laminin and bind plasminogen, thus possibly participating during the adhesion process and dissemination. Also, by interacting with fibrinogen and plasma fibronectin, the protein LIC13086 probably has an inhibitory effect in the fibrin clot formation during the infection process. The newly characterized protein can also bind molecules of the complement system and the regulator C4BP and, thus, might have a role in the evasion mechanism of Leptospira. Taken together, our results suggest that the protein LIC13086 may have a multifunctional role in leptospiral pathogenesis, participating in host invasion, dissemination, and immune evasion processes.
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Affiliation(s)
- Felipe José Passalia
- Laboratório de Desenvolvimento de Vacinas, Instituto Butantan, São Paulo, Brazil.,Programa de Pós-Graduação Interunidades em Biotecnologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Marcos Bryan Heinemann
- Laboratório de Zoonoses Bacterianas, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, Brazil
| | - Mônica Larucci Vieira
- Departamento de Microbiologia, Instituto de Ciências Biológicas (ICB), Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
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5
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Kochi LT, Fernandes LGV, Souza GO, Vasconcellos SA, Heinemann MB, Romero EC, Kirchgatter K, Nascimento ALTO. The interaction of two novel putative proteins of Leptospira interrogans with E-cadherin, plasminogen and complement components with potential role in bacterial infection. Virulence 2020; 10:734-753. [PMID: 31422744 PMCID: PMC6735628 DOI: 10.1080/21505594.2019.1650613] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Leptospirosis is a worldwide zoonosis caused by pathogenic species of Leptospira. Leptospires are able to adhere to exposed extracellular matrix in injured tissues and, once in the bloodstream, can survive the attack of the immune system and spread to colonize target organs. In this work, we report that two novel putative proteins, coded by the genes LIC11711 and LIC12587 of L. interrogans serovar Copenhageni are conserved among pathogenic strains, and probably exposed in the bacterial surface. Soluble recombinant proteins were expressed in Escherichia coli, purified and characterized. Both recombinant proteins bound to laminin and E-cadherin, suggesting an initial adhesion function in host epithelial cells. The recombinant protein LIC11711 (rLIC11711) was able to capture plasminogen (PLG) from normal human serum and convert to enzymatically active plasmin (PLA), in the presence of PLG activator. rLIC12587 (recombinant protein LIC12587) displayed a dose dependent and saturable interaction with components C7, C8, and C9 of the complement system, reducing the bactericidal effect of the complement. Binding to C9 may have consequences such as C9 polymerization inhibition, interfering with the membrane attack complex formation. Blocking LIC11711 and LIC12587 on bacterial cells by the respective antiserum reduced leptospiral cell viability when exposed to normal human serum (NHS). Both recombinant proteins could be recognized by serum samples of confirmed leptospirosis, but not of unrelated diseases, suggesting that the native proteins are immunogenic and expressed during leptospirosis. Taken together, our data suggest that these proteins may have a role in leptospiral pathogenesis, participating in immune evasion strategies.
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Affiliation(s)
- Leandro T Kochi
- a Laboratório Especial de Desenvolvimento de Vacinas, Instituto Butantan , São Paulo , Brazil.,b Programa de Pós-Graduação Interunidades em Biotecnologia, Instituto de Ciências Biomédicas , São Paulo , Brazil
| | - Luis G V Fernandes
- a Laboratório Especial de Desenvolvimento de Vacinas, Instituto Butantan , São Paulo , Brazil
| | - Gisele O Souza
- c Laboratório de Zoonoses Bacterianas, Faculdade de Medicina Veterinária e Zootecnia , São Paulo , Brazil
| | - Silvio A Vasconcellos
- c Laboratório de Zoonoses Bacterianas, Faculdade de Medicina Veterinária e Zootecnia , São Paulo , Brazil
| | - Marcos B Heinemann
- c Laboratório de Zoonoses Bacterianas, Faculdade de Medicina Veterinária e Zootecnia , São Paulo , Brazil
| | - Eliete C Romero
- d Centro de Bacteriologia, Instituto Adolfo Lutz , Sao Paulo , Brazil
| | - Karin Kirchgatter
- e Núcleo de Estudos em Malária, Superintendência de Controle de Endemias -SUCEN/IMT-SP, USP , Sao Paulo , Brazil
| | - Ana L T O Nascimento
- a Laboratório Especial de Desenvolvimento de Vacinas, Instituto Butantan , São Paulo , Brazil
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6
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Heterologous Expression of the Pathogen-Specific LIC11711 Gene in the Saprophyte L. biflexa Increases Bacterial Binding to Laminin and Plasminogen. Pathogens 2020; 9:pathogens9080599. [PMID: 32707797 PMCID: PMC7460275 DOI: 10.3390/pathogens9080599] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 07/13/2020] [Accepted: 07/17/2020] [Indexed: 12/13/2022] Open
Abstract
Leptospirosis is a febrile disease and the etiological agents are pathogenic bacteria of the genus Leptospira. The leptospiral virulence mechanisms are not fully understood and the application of genetic tools is still limited, despite advances in molecular biology techniques. The leptospiral recombinant protein LIC11711 has shown interaction with several host components, indicating a potential function in virulence. This study describes a system for heterologous expression of the L. interrogans gene lic11711 using the saprophyte L. biflexa serovar Patoc as a surrogate, aiming to investigate its possible activity in bacterial virulence. Heterologous expression of LIC11711 was performed using the pMaOri vector under regulation of the lipL32 promoter. The protein was found mainly on the leptospiral outer surface, confirming its location. The lipL32 promoter enhanced the expression of LIC11711 in L. biflexa compared to the pathogenic strain, indicating that this strategy may be used to overexpress low-copy proteins. The presence of LIC11711 enhanced the capacity of L. biflexa to adhere to laminin (Lam) and plasminogen (Plg)/plasmin (Pla) in vitro, suggesting the involvement of this protein in bacterial pathogenesis. We show for the first time that the expression of LIC11711 protein of L. interrogans confers a virulence-associated phenotype on L. biflexa, pointing out possible mechanisms used by pathogenic leptospires.
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7
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Barbosa AS, Isaac L. Strategies used by Leptospira spirochetes to evade the host complement system. FEBS Lett 2020; 594:2633-2644. [PMID: 32153015 DOI: 10.1002/1873-3468.13768] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 02/27/2020] [Accepted: 02/28/2020] [Indexed: 12/19/2022]
Abstract
Leptospires are highly invasive spirochetes equipped with efficient strategies for dissemination in the host. The Leptospira genus currently comprises 64 species divided into two major clades: the saprophytes composed of nonpathogenic, free-living organisms, and the pathogens encompassing all the species that cause mild or severe infections in humans and animals. While saprophytes are highly susceptible to the lytic action of the complement system, pathogenic (virulent) strains have evolved virulence strategies that allow efficient colonization of a variety of hosts and target organs, including mechanisms to circumvent hosts' innate and acquired immune responses. Pathogenic Leptospira avoid complement-mediated killing by recruiting host complement regulatory proteins and by targeting complement proteins using own and host-expressed proteases. This review outlines the role of complement in eradicating saprophytic Leptospira and the stratagems adopted by pathogenic Leptospira to maneuver the host complement system for their benefit.
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Affiliation(s)
| | - Lourdes Isaac
- Laboratory of Complement, Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, Brazil
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8
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Passalia FJ, Carvalho E, Heinemann MB, Vieira ML, Nascimento ALTO. The Leptospira interrogans LIC10774 is a multifunctional surface protein that binds calcium and interacts with host components. Microbiol Res 2020; 235:126470. [PMID: 32247916 DOI: 10.1016/j.micres.2020.126470] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 03/13/2020] [Accepted: 03/15/2020] [Indexed: 02/06/2023]
Abstract
Leptospirosis is a global re-emerging zoonosis, caused by pathogenic bacteria of the genus Leptospira. Humans are infected mainly through contact with contaminated water or soil. The understanding of the molecular mechanisms of leptospirosis through the characterization of unknown outer membrane proteins may contribute to the development of new treatments, diagnostic methods and vaccines. We have identified using bioinformatics analysis a protein that is encoded by the gene LIC10774, predicted to be localized at the leptospiral outer membrane and exhibit beta-roll folding. Surface exposure was confirmed by flow cytometry, ELISA and immunofluorescence-based confocal microscopy. Through circular dichroism spectroscopy and hydrophobic dye binding we have shown that rLIC10774 binds calcium ions, which imposes changes to secondary and tertiary structures. The recombinant protein was capable of binding to several host extracellular matrix and serum components. Therefore, we describe LIC10774 as a calcium-binding protein exposed in the outer surface of pathogenic leptospires with possible multifunctional roles in adhesion to host tissues, evasion of the immune system and participation in dissemination processes during leptospirosis. In addition, we hypothesize that the calcium binding is important for temperature-dependent functional roles during leptospirosis.
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Affiliation(s)
- Felipe José Passalia
- Laboratório de Desenvolvimento de Vacinas, Instituto Butantan, 05503-900, São Paulo, Brazil; Programa de Pós-Graduação Interunidades em Biotecnologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, 05508-900, São Paulo, Brazil
| | - Eneas Carvalho
- Laboratório de Bacteriologia, Instituto Butantan, 05503-900, São Paulo, Brazil
| | - Marcos Bryan Heinemann
- Laboratório de Zoonoses Bacterianas, Faculdade de Medicina Veterinária e Zootecnia, Universidade de Sao Paulo, Brazil
| | - Mônica Larucci Vieira
- Departamento de Microbiologia, Instituto de Ciências Biológicas (ICB), Universidade Federal de Minas Gerais (UFMG), Minas Gerais, Brazil.
| | - Ana Lucia T O Nascimento
- Laboratório de Desenvolvimento de Vacinas, Instituto Butantan, 05503-900, São Paulo, Brazil; Programa de Pós-Graduação Interunidades em Biotecnologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, 05508-900, São Paulo, Brazil.
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9
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Chin VK, Basir R, Nordin SA, Abdullah M, Sekawi Z. Pathology and Host Immune Evasion During Human Leptospirosis: a Review. Int Microbiol 2019; 23:127-136. [DOI: 10.1007/s10123-019-00067-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 02/08/2019] [Accepted: 02/19/2019] [Indexed: 12/21/2022]
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10
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Cavenague MF, Teixeira AF, Filho AS, Souza GO, Vasconcellos SA, Heinemann MB, Nascimento ALTO. Characterization of a novel protein of Leptospira interrogans exhibiting plasminogen, vitronectin and complement binding properties. Int J Med Microbiol 2019; 309:116-129. [PMID: 30638770 DOI: 10.1016/j.ijmm.2018.12.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 10/16/2018] [Accepted: 12/28/2018] [Indexed: 01/21/2023] Open
Abstract
Leptospirosis is a severe zoonosis caused by pathogenic species of the genus Leptospira. This work focuses on a hypothetical protein of unknown function, encoded by the gene LIC13259, and predicted to be a surface protein, widely distributed among pathogenic leptospiral strain. The gene was amplified from L. interrogans serovar Copenhageni, strain Fiocruz L1-130, cloned and the protein expressed using Escherichia coli as a host system. Immunofluorescence assay showed that the protein is surface-exposed. The recombinant protein LIC13259 (rLIC13259) has the ability to interact with the extracellular matrix (ECM) laminin, in a dose-dependent manner but saturation was not reach. The rLIC13259 protein is a plasminogen (PLG)-binding protein, generating plasmin, in the presence of urokinase PLG-activator uPA. The recombinant protein is able to mediate the binding to human purified terminal complement route vitronectin, C7, C8 and C9, and to recruit and interact with these components from normal human serum (NHS). These interactions are dose-dependent on NHS increased concentration. The binding of rLIC13259 to C8 and vitronectin was slight and pronounced inhibited in the presence of increasing heparin concentration, respectively, suggesting that the interaction with vitronectin occurs via heparin domain. Most interesting, the interaction of rLIC13259 with C9 protein was capable of preventing C9 polymerization, suggesting that the membrane attack complex (MAC) formation was inhibited. Thus, we tentatively assign the coding sequence (CDS) LIC13259, previously annotated as unknown function, as a novel protein that may play an important role in the host's invasion and immune evasion processes, contributing to the establishment of the leptospiral infection.
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Affiliation(s)
- Maria F Cavenague
- Laboratorio Especial de Desenvolvimento de Vacinas - Centro de Biotecnologia, Instituto Butantan, Sao Paulo, SP, Brazil; Programa de Pós-Graduação Interunidades em Biotecnologia, Instituto de Ciencias Biomedicas, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - Aline F Teixeira
- Laboratorio Especial de Desenvolvimento de Vacinas - Centro de Biotecnologia, Instituto Butantan, Sao Paulo, SP, Brazil
| | - Antonio S Filho
- Laboratório de Zoonoses Bacterianas, Faculdade de Medicina Veterinária e Zootecnia, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - Gisele O Souza
- Laboratório de Zoonoses Bacterianas, Faculdade de Medicina Veterinária e Zootecnia, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - Silvio A Vasconcellos
- Laboratório de Zoonoses Bacterianas, Faculdade de Medicina Veterinária e Zootecnia, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - Marcos B Heinemann
- Laboratório de Zoonoses Bacterianas, Faculdade de Medicina Veterinária e Zootecnia, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - Ana L T O Nascimento
- Laboratorio Especial de Desenvolvimento de Vacinas - Centro de Biotecnologia, Instituto Butantan, Sao Paulo, SP, Brazil; Programa de Pós-Graduação Interunidades em Biotecnologia, Instituto de Ciencias Biomedicas, Universidade de Sao Paulo, Sao Paulo, SP, Brazil.
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11
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Nascimento Filho EG, Vieira ML, Teixeira AF, Santos JC, Fernandes LGV, Passalia FJ, Daroz BB, Rossini A, Kochi LT, Cavenague MF, Pimenta DC, Nascimento ALTO. Proteomics as a tool to understand Leptospira physiology and virulence: Recent advances, challenges and clinical implications. J Proteomics 2018; 180:80-87. [PMID: 29501847 DOI: 10.1016/j.jprot.2018.02.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 02/14/2018] [Accepted: 02/22/2018] [Indexed: 01/24/2023]
Affiliation(s)
- Edson G Nascimento Filho
- Laboratório Especial de Desenvolvimento de Vacinas, Instituto Butantan, Avenida Vital Brazil, 1500, 05503-900 Sao Paulo, SP, Brazil
| | - Monica L Vieira
- Laboratório Especial de Desenvolvimento de Vacinas, Instituto Butantan, Avenida Vital Brazil, 1500, 05503-900 Sao Paulo, SP, Brazil
| | - Aline F Teixeira
- Laboratório Especial de Desenvolvimento de Vacinas, Instituto Butantan, Avenida Vital Brazil, 1500, 05503-900 Sao Paulo, SP, Brazil
| | - Jademilson C Santos
- Laboratório Especial de Desenvolvimento de Vacinas, Instituto Butantan, Avenida Vital Brazil, 1500, 05503-900 Sao Paulo, SP, Brazil
| | - Luis G V Fernandes
- Laboratório Especial de Desenvolvimento de Vacinas, Instituto Butantan, Avenida Vital Brazil, 1500, 05503-900 Sao Paulo, SP, Brazil
| | - Felipe J Passalia
- Laboratório Especial de Desenvolvimento de Vacinas, Instituto Butantan, Avenida Vital Brazil, 1500, 05503-900 Sao Paulo, SP, Brazil; Programa de Pos-Graduação Interunidades em Biotecnologia, Instituto de Ciências Biomédicas, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Brenda B Daroz
- Laboratório Especial de Desenvolvimento de Vacinas, Instituto Butantan, Avenida Vital Brazil, 1500, 05503-900 Sao Paulo, SP, Brazil; Programa de Pos-Graduação Interunidades em Biotecnologia, Instituto de Ciências Biomédicas, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Amanda Rossini
- Laboratório Especial de Desenvolvimento de Vacinas, Instituto Butantan, Avenida Vital Brazil, 1500, 05503-900 Sao Paulo, SP, Brazil; Programa de Pos-Graduação Interunidades em Biotecnologia, Instituto de Ciências Biomédicas, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Leandro T Kochi
- Laboratório Especial de Desenvolvimento de Vacinas, Instituto Butantan, Avenida Vital Brazil, 1500, 05503-900 Sao Paulo, SP, Brazil; Programa de Pos-Graduação Interunidades em Biotecnologia, Instituto de Ciências Biomédicas, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Maria F Cavenague
- Laboratório Especial de Desenvolvimento de Vacinas, Instituto Butantan, Avenida Vital Brazil, 1500, 05503-900 Sao Paulo, SP, Brazil; Programa de Pos-Graduação Interunidades em Biotecnologia, Instituto de Ciências Biomédicas, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Daniel C Pimenta
- Laboratório de Bioquímica e Biofísica, Instituto Butantan, Avenida Vital Brazil, 1500, 05503-900 Sao Paulo, SP, Brazil
| | - Ana L T O Nascimento
- Laboratório Especial de Desenvolvimento de Vacinas, Instituto Butantan, Avenida Vital Brazil, 1500, 05503-900 Sao Paulo, SP, Brazil.
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