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Ramírez-Rico G, Martinez-Castillo M, Ruiz-Mazón L, Meneses-Romero EP, Palacios JAF, Díaz-Aparicio E, Abascal EN, de la Garza M. Identification, Biochemical Characterization, and In Vivo Detection of a Zn-Metalloprotease with Collagenase Activity from Mannheimia haemolytica A2. Int J Mol Sci 2024; 25:1289. [PMID: 38279292 PMCID: PMC10816954 DOI: 10.3390/ijms25021289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 01/14/2024] [Accepted: 01/18/2024] [Indexed: 01/28/2024] Open
Abstract
Respiratory diseases in ruminants are a main cause of economic losses to farmers worldwide. Approximately 25% of ruminants experience at least one episode of respiratory disease during the first year of life. Mannheimia haemolytica is the main etiological bacterial agent in the ruminant respiratory disease complex. M. haemolytica can secrete several virulence factors, such as leukotoxin, lipopolysaccharide, and proteases, that can be targeted to treat infections. At present, little information has been reported on the secretion of M. haemolytica A2 proteases and their host protein targets. Here, we obtained evidence that M. haemolytica A2 proteases promote the degradation of hemoglobin, holo-lactoferrin, albumin, and fibrinogen. Additionally, we performed biochemical characterization for a specific 110 kDa Zn-dependent metalloprotease (110-Mh metalloprotease). This metalloprotease was purified through ion exchange chromatography and characterized using denaturing and chaotropic agents and through zymography assays. Furthermore, mass spectrometry identification and 3D modeling were performed. Then, antibodies against the 110 kDa-Mh metalloprotease were produced, which achieved great inhibition of proteolytic activity. Finally, the antibodies were used to perform immunohistochemical tests on postmortem lung samples from sheep with suggestive histology data of pneumonic mannheimiosis. Taken together, our results strongly suggest that the 110-Mh metalloprotease participates as a virulence mechanism that promotes damage to host tissues.
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Affiliation(s)
- Gerardo Ramírez-Rico
- Faculty of Professional Studies Cuautitlan, Autonomous National University of Mexico (UNAM), Mexico City 54714, Mexico;
- Department of Cell Biology, Center for Research and Advanced Studies, Mexico City 07360, Mexico;
| | - Moises Martinez-Castillo
- Liver, Pancreas and Motility Laboratory, Unit of Research in Experimental Medicine, School of Medicine, Autonomous National University of Mexico (UNAM), Mexico City 06726, Mexico;
| | - Lucero Ruiz-Mazón
- Department of Cell Biology, Center for Research and Advanced Studies, Mexico City 07360, Mexico;
| | | | | | - Efrén Díaz-Aparicio
- National Center for Disciplinary Research in Animal Health and Safety, National Institute of Forestry, Agricultural and Livestock Research (INIFAP), Mexico City 05110, Mexico
| | - Erasmo Negrete Abascal
- Faculty of Professional Studies Iztacala, Autonomous National University of Mexico (UNAM), Mexico City 54090, Mexico;
| | - Mireya de la Garza
- Department of Cell Biology, Center for Research and Advanced Studies, Mexico City 07360, Mexico;
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2
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Loera-Muro A, Ramírez-Castillo FY, Moreno-Flores AC, Martin EM, Avelar-González FJ, Guerrero-Barrera AL. Actinobacillus pleuropneumoniae Surviving on Environmental Multi-Species Biofilms in Swine Farms. Front Vet Sci 2021; 8:722683. [PMID: 34660763 PMCID: PMC8515031 DOI: 10.3389/fvets.2021.722683] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 08/30/2021] [Indexed: 11/17/2022] Open
Abstract
Actinobacillus pleuropneumoniae is the etiologic agent of porcine contagious pleuropneumonia, an important respiratory disease for the pig industry. A. pleuropneumoniae has traditionally been considered an obligate pig pathogen. However, its presence in the environment is starting to be known. Here, we report the A. pleuropneumoniae surviving in biofilms in samples of drinking water of swine farms from Mexico. Fourteen farms were studied. Twenty drinking water samples were positive to A. pleuropneumoniae distributed on three different farms. The bacteria in the drinking water samples showed the ability to form biofilms in vitro. Likewise, A. pleuropneumoniae biofilm formation in situ was observed on farm drinkers, where the biofilm formation was in the presence of other bacteria such as Escherichia coli, Stenotrophomonas maltophilia, and Acinetobacter schindleri. Our data suggest that A. pleuropneumoniae can inhabit aquatic environments using multi-species biofilms as a strategy to survive outside of their host.
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Affiliation(s)
- Abraham Loera-Muro
- CONACYT-Centro de Investigaciones Biológicas del Noreste, La Paz, Mexico
| | - Flor Y Ramírez-Castillo
- Laboratorio de Biología Celular y Tisular, Departamento de Morfología, Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Aguascalientes, Mexico
| | - Adriana C Moreno-Flores
- Laboratorio de Biología Celular y Tisular, Departamento de Morfología, Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Aguascalientes, Mexico
| | - Eduardo M Martin
- Laboratorio de Biología Celular y Tisular, Departamento de Morfología, Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Aguascalientes, Mexico
| | - Francisco J Avelar-González
- Laboratorio de Estudios Ambientales, Departamento Fisiología y Farmacología, Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Aguascalientes, Mexico
| | - Alma L Guerrero-Barrera
- Laboratorio de Biología Celular y Tisular, Departamento de Morfología, Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Aguascalientes, Mexico
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3
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Bercier P, Gottschalk M, Grenier D. Effects of Actinobacillus pleuropneumoniae on barrier function and inflammatory response of pig tracheal epithelial cells. Pathog Dis 2019; 77:5159464. [PMID: 30395241 DOI: 10.1093/femspd/fty079] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 11/01/2018] [Indexed: 12/11/2022] Open
Abstract
Actinobacillus pleuropneumoniae is a respiratory pathogen that causes porcine pleuropneumonia, a fatal respiratory disease responsible for high economic losses in the swine industry worldwide. With the objective to better understand the interactions between A. pleuropneumoniae and the porcine respiratory epithelium, we investigated the capacity of this pathogen to damage the epithelial barrier and induce an inflammatory response. We showed that A. pleuropneumoniae, even at a multiplicity of infection of 10, is able to break the tracheal epithelial barrier integrity as determined by monitoring the transepithelial electrical resistance and fluorescein-isothiocyanate-dextran transport. Immunofluorescence staining analysis suggested that A. pleuropneumoniae is affecting two important tight junction proteins (occludin, zonula occludens-1). As a consequence of the breakdown of the epithelial barrier integrity, A. pleuropneumoniae can translocate across a cell monolayer. We also showed that tracheal epithelial cells secrete pro-inflammatory cytokines (IL-8, IL-6, TNF-α) in response to a stimulation with this pathogen. In summary, A. pleuropneumoniae is able to induce damage to the porcine respiratory epithelial barrier. Challenging the epithelial cells with A. pleuropneumoniae was also associated with the secretion of pro-inflammatory cytokines. This better knowledge of the interactions between A. pleuropneumoniae and the epithelial cells may help to design novel strategies to prevent epithelium invasion by this bacterium along with other swine respiratory pathogens.
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Affiliation(s)
- Philippe Bercier
- Groupe de Recherche en Écologie Buccale (GREB), Faculté de médecine dentaire, Université Laval, Quebec City, Quebec, GIV 0A6, Canada
| | - Marcelo Gottschalk
- Groupe de Recherche sur les Maladies Infectieuses en Production Animale (GREMIP), Faculté de médecine vétérinaire, Université de Montréal, Saint-Hyacinthe, Quebec, J2S 2M2, Canada.,Centre de Recherche en Infectiologie Porcine et Avicole (CRIPA), Fonds de Recherche du Québec - Nature et Technologies (FRQNT), Saint-Hyacinthe, Quebec, J2S 2M2, Canada
| | - Daniel Grenier
- Groupe de Recherche en Écologie Buccale (GREB), Faculté de médecine dentaire, Université Laval, Quebec City, Quebec, GIV 0A6, Canada.,Centre de Recherche en Infectiologie Porcine et Avicole (CRIPA), Fonds de Recherche du Québec - Nature et Technologies (FRQNT), Saint-Hyacinthe, Quebec, J2S 2M2, Canada
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Antenucci F, Fougeroux C, Deeney A, Ørskov C, Rycroft A, Holst PJ, Bojesen AM. In vivo testing of novel vaccine prototypes against Actinobacillus pleuropneumoniae. Vet Res 2018; 49:4. [PMID: 29316978 PMCID: PMC5761136 DOI: 10.1186/s13567-017-0502-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 12/18/2017] [Indexed: 02/05/2023] Open
Abstract
Actinobacillus pleuropneumoniae (A. pleuropneumoniae) is a Gram-negative bacterium that represents the main cause of porcine pleuropneumonia in pigs, causing significant economic losses to the livestock industry worldwide. A. pleuropneumoniae, as the majority of Gram-negative bacteria, excrete vesicles from its outer membrane (OM), accordingly defined as outer membrane vesicles (OMVs). Thanks to their antigenic similarity to the OM, OMVs have emerged as a promising tool in vaccinology. In this study we describe the in vivo testing of several vaccine prototypes for the prevention of infection by all known A. pleuropneumoniae serotypes. Previously identified vaccine candidates, the recombinant proteins ApfA and VacJ, administered individually or in various combinations with the OMVs, were employed as vaccination strategies. Our data show that the addition of the OMVs in the vaccine formulations significantly increased the specific IgG titer against both ApfA and VacJ in the immunized animals, confirming the previously postulated potential of the OMVs as adjuvant. Unfortunately, the antibody response raised did not translate into an effective protection against A. pleuropneumoniae infection, as none of the immunized groups following challenge showed a significantly lower degree of lesions than the controls. Interestingly, quite the opposite was true, as the animals with the highest IgG titers were also the ones bearing the most extensive lesions in their lungs. These results shed new light on A. pleuropneumoniae pathogenicity, suggesting that antibody-mediated cytotoxicity from the host immune response may play a central role in the development of the lesions typically associated with A. pleuropneumoniae infections.
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Affiliation(s)
- Fabio Antenucci
- Department of Veterinary and Animal Sciences, University of Copenhagen, Stigbøjlen 4, 1870 Frb. C., 1-20, Building: 301, Copenhagen, Denmark
| | - Cyrielle Fougeroux
- Department of International Health, Immunology and Microbiology ISIM, University of Copenhagen, Øster Farigmagsgade 5, Bldg 22/23, 1014 København K, Copenhagen, Denmark
| | - Alannah Deeney
- Department of Pathology and Pathogen Biology, Royal Veterinary College, Hawkshead Lane, North Mymms, Hertfordshire, AL9 7TA, UK
| | - Cathrine Ørskov
- Department of Biomedical Sciences, University of Copenhagen, Blegdamsvej 3, 2200 København N, 12.3, Building: 32, Copenhagen, Denmark
| | - Andrew Rycroft
- Department of Pathology and Pathogen Biology, Royal Veterinary College, Hawkshead Lane, North Mymms, Hertfordshire, AL9 7TA, UK
| | - Peter Johannes Holst
- Department of International Health, Immunology and Microbiology ISIM, University of Copenhagen, Øster Farigmagsgade 5, Bldg 22/23, 1014 København K, Copenhagen, Denmark
| | - Anders Miki Bojesen
- Department of Veterinary and Animal Sciences, University of Copenhagen, Stigbøjlen 4, 1870 Frb. C., 1-20, Building: 301, Copenhagen, Denmark.
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5
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Antenucci F, Fougeroux C, Bossé JT, Magnowska Z, Roesch C, Langford P, Holst PJ, Bojesen AM. Identification and characterization of serovar-independent immunogens in Actinobacillus pleuropneumoniae. Vet Res 2017; 48:74. [PMID: 29122004 PMCID: PMC5679336 DOI: 10.1186/s13567-017-0479-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Accepted: 10/20/2017] [Indexed: 11/17/2022] Open
Abstract
Despite numerous actions to prevent disease, Actinobacillus pleuropneumoniae (A. pleuropneumoniae) remains a major cause of porcine pleuropneumonia, resulting in economic losses to the swine industry worldwide. In this paper, we describe the utilization of a reverse vaccinology approach for the selection and in vitro testing of serovar-independent A. pleuropneumoniae immunogens. Potential immunogens were identified in the complete genomes of three A. pleuropneumoniae strains belonging to different serovars using the following parameters: predicted outer-membrane subcellular localization; ≤ 1 trans-membrane helices; presence of a signal peptide in the protein sequence; presence in all known A. pleuropneumoniae genomes; homology with other well characterized factors with relevant data regarding immunogenicity/protective potential. Using this approach, we selected the proteins ApfA and VacJ to be expressed and further characterized, both in silico and in vitro. Additionally, we analysed outer membrane vesicles (OMVs) of A. pleuropneumoniae MIDG2331 as potential immunogens, and compared deletions in degS and nlpI for increasing yields of OMVs compared to the parental strain. Our results indicated that ApfA and VacJ are highly conserved proteins, naturally expressed during infection by all A. pleuropneumoniae serovars tested. Furthermore, OMVs, ApfA and VacJ were shown to possess a high immunogenic potential in vitro. These findings favour the immunogen selection protocol used, and suggest that OMVs, along with ApfA and VacJ, could represent effective immunogens for the prevention of A. pleuropneumoniae infections in a serovar-independent manner. This hypothesis is nonetheless predictive in nature, and in vivo testing in a relevant animal model will be necessary to verify its validity.
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Affiliation(s)
- Fabio Antenucci
- Department of Veterinary and Animal Sciences, University of Copenhagen, Stigbøjlen 4, 1870 Frb. C., 1-20, Building: 301, Copenhagen, Denmark
| | - Cyrielle Fougeroux
- Department of International Health, Immunology and Microbiology ISIM, University of Copenhagen, Øster Farigmagsgade 5, Bldg 22/23, København K, 1014, Copenhagen, Denmark
| | - Janine T Bossé
- Department of Medicine, St Mary's Campus, Imperial College London, 236 Wright Fleming Wing, London, UK
| | - Zofia Magnowska
- Department of Veterinary and Animal Sciences, University of Copenhagen, Stigbøjlen 4, 1870 Frb. C., 1-20, Building: 301, Copenhagen, Denmark
| | - Camille Roesch
- Izon Science Ltd, Bâtiment Laennec, 60 Avenue Rockefeller, 69008, Lyon, France
| | - Paul Langford
- Department of Medicine, St Mary's Campus, Imperial College London, 236 Wright Fleming Wing, London, UK
| | - Peter Johannes Holst
- Department of International Health, Immunology and Microbiology ISIM, University of Copenhagen, Øster Farigmagsgade 5, Bldg 22/23, København K, 1014, Copenhagen, Denmark
| | - Anders Miki Bojesen
- Department of Veterinary and Animal Sciences, University of Copenhagen, Stigbøjlen 4, 1870 Frb. C., 1-20, Building: 301, Copenhagen, Denmark.
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6
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Mannheimia haemolytica A2 secretes different proteases into the culture medium and in outer membrane vesicles. Microb Pathog 2017; 113:276-281. [PMID: 29051057 DOI: 10.1016/j.micpath.2017.10.027] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Revised: 10/09/2017] [Accepted: 10/16/2017] [Indexed: 02/05/2023]
Abstract
Respiratory diseases in ruminants have a significantly negative impact on the worldwide economy. The bacterium Mannheimia haemolytica is involved in pneumonic infections in bovine and ovine. In gram-negative bacteria, six secretion systems related to the colonization process and host tissue damage have been reported. In addition, in the last two decades, the production of outer membrane vesicles has been studied as a different bacterial strategy to release virulence factors, such as exotoxins, lipopolysaccharides, and proteases. However, in M. haemolytica serotype A2, protease secretion and release in vesicles have not been reported as virulence mechanisms. The aim of this work was to identify proteases released into the culture supernatant and in vesicles of M. haemolytica A2. Our results showed evident differences in the molecular mass and activity of proteases present in culture supernatants and outer membrane vesicles based on zymography assays. The biochemical characterization of M. haemolytica proteases revealed that the main types were cysteine and metalloproteases. A specific metalloprotease of 100 kDa was active in the culture supernatants, but it was not active and was found in low quantities in vesicles. Proteases could be an important virulence factor during the infectious pneumonic process led by M. haemolytica.
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7
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Luna-Castro S, Aguilar-Romero F, Samaniego-Barrón L, Godínez-Vargas D, de la Garza M. Effect of bovine apo-lactoferrin on the growth and virulence of Actinobacillus pleuropneumoniae. Biometals 2014; 27:891-903. [DOI: 10.1007/s10534-014-9752-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2014] [Accepted: 05/15/2014] [Indexed: 01/01/2023]
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8
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Loera-Muro A, Avelar-González FJ, Loera-Muro VM, Jacques M, Guerrero-Barrera AL. Presence of <i>Actinobacillus pleuropneumoniae, Streptococcus suis, Pasteurella multocida, Bordetella bronchiseptica, Haemophilus parasuis and Mycoplasma hyopneumoniae</i> in upper respiratory tract of swine in farms from Aguascalientes, Mexico. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/ojas.2013.32020] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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9
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Serrano-Rubio LE, Tenorio-Gutiérrez V, Suárez-Güemes F, Reyes-Cortés R, Rodríguez-Mendiola M, Arias-Castro C, Godínez-Vargas D, de la Garza M. Identification of Actinobacillus pleuropneumoniae biovars 1 and 2 in pigs using a PCR assay. Mol Cell Probes 2008; 22:305-12. [DOI: 10.1016/j.mcp.2008.09.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2008] [Revised: 08/14/2008] [Accepted: 09/17/2008] [Indexed: 10/21/2022]
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10
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Identification and characterization of novel antigenic vaccine candidates of Actinobacillus pleuropneumoniae. Vaccine 2008; 26:1942-54. [DOI: 10.1016/j.vaccine.2008.02.022] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2007] [Revised: 01/28/2008] [Accepted: 02/07/2008] [Indexed: 11/18/2022]
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11
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Xu Z, Zhou Y, Li L, Zhou R, Xiao S, Wan Y, Zhang S, Wang K, Li W, Li L, Jin H, Kang M, Dalai B, Li T, Liu L, Cheng Y, Zhang L, Xu T, Zheng H, Pu S, Wang B, Gu W, Zhang XL, Zhu GF, Wang S, Zhao GP, Chen H. Genome biology of Actinobacillus pleuropneumoniae JL03, an isolate of serotype 3 prevalent in China. PLoS One 2008; 3:e1450. [PMID: 18197260 PMCID: PMC2175527 DOI: 10.1371/journal.pone.0001450] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2007] [Accepted: 12/19/2007] [Indexed: 11/19/2022] Open
Abstract
Actinobacillus pleuropneumoniae is the etiologic agent of porcine contagious pleuropneumonia, a cause of considerable world wide economic losses in the swine industry. We sequenced the complete genome of A. pleuropneumoniae, JL03, an isolate of serotype 3 prevalent in China. Its genome is a single chromosome of 2,242,062 base pairs containing 2,097 predicted protein-coding sequences, six ribosomal rRNA operons, and 63 tRNA genes. Preliminary analysis of the genomic sequence and the functions of the encoded proteins not only confirmed the present physiological and pathological knowledge but also offered new insights into the metabolic and virulence characteristics of this important pathogen. We identified a full spectrum of genes related to its characteristic chemoheterotrophic catabolism of fermentation and respiration with an incomplete TCA system for anabolism. In addition to confirming the lack of ApxI toxin, identification of a nonsense mutation in apxIVA and a 5'-proximal truncation of the flp operon deleting both its promoter and the flp1flp2tadV genes have provided convincing scenarios for the low virulence property of JL03. Comparative genomic analysis using the available sequences of other serotypes, probable strain (serotype)-specific genomic islands related to capsular polysaccharides and lipopolysaccharide O-antigen biosyntheses were identified in JL03, which provides a foundation for future research into the mechanisms of serotypic diversity of A. pleuropneumoniae.
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Affiliation(s)
- Zhuofei Xu
- Division of Animal Infectious Disease, State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Yan Zhou
- Shanghai - MOST Key Laboratory of Health and Disease Genomics, Chinese National Human Genome Center at Shanghai, Shanghai, China
- State Key Laboratory of Genetic Engineering, Department of Microbiology, School of Life Science, Fudan University, Shanghai, China
| | - Liangjun Li
- Division of Animal Infectious Disease, State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Rui Zhou
- Division of Animal Infectious Disease, State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Shaobo Xiao
- Division of Animal Infectious Disease, State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Yun Wan
- Division of Animal Infectious Disease, State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Sihua Zhang
- Division of Animal Infectious Disease, State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Kai Wang
- Shanghai - MOST Key Laboratory of Health and Disease Genomics, Chinese National Human Genome Center at Shanghai, Shanghai, China
| | - Wei Li
- Division of Animal Infectious Disease, State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Lu Li
- Division of Animal Infectious Disease, State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Hui Jin
- Division of Animal Infectious Disease, State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Mingsong Kang
- Division of Animal Infectious Disease, State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Baolige Dalai
- Division of Animal Infectious Disease, State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Tingting Li
- Division of Animal Infectious Disease, State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Lei Liu
- Division of Animal Infectious Disease, State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Yangyi Cheng
- Shanghai - MOST Key Laboratory of Health and Disease Genomics, Chinese National Human Genome Center at Shanghai, Shanghai, China
| | - Lei Zhang
- Shanghai - MOST Key Laboratory of Health and Disease Genomics, Chinese National Human Genome Center at Shanghai, Shanghai, China
| | - Tao Xu
- Shanghai - MOST Key Laboratory of Health and Disease Genomics, Chinese National Human Genome Center at Shanghai, Shanghai, China
| | - Huajun Zheng
- Shanghai - MOST Key Laboratory of Health and Disease Genomics, Chinese National Human Genome Center at Shanghai, Shanghai, China
| | - Shiying Pu
- Shanghai - MOST Key Laboratory of Health and Disease Genomics, Chinese National Human Genome Center at Shanghai, Shanghai, China
| | - Bofei Wang
- Shanghai - MOST Key Laboratory of Health and Disease Genomics, Chinese National Human Genome Center at Shanghai, Shanghai, China
| | - Wenyi Gu
- Shanghai - MOST Key Laboratory of Health and Disease Genomics, Chinese National Human Genome Center at Shanghai, Shanghai, China
| | - Xiang-Lin Zhang
- Shanghai - MOST Key Laboratory of Health and Disease Genomics, Chinese National Human Genome Center at Shanghai, Shanghai, China
| | - Geng-Feng Zhu
- Shanghai - MOST Key Laboratory of Health and Disease Genomics, Chinese National Human Genome Center at Shanghai, Shanghai, China
| | - Shengyue Wang
- Shanghai - MOST Key Laboratory of Health and Disease Genomics, Chinese National Human Genome Center at Shanghai, Shanghai, China
- State Key Laboratory of Genetic Engineering, Department of Microbiology, School of Life Science, Fudan University, Shanghai, China
| | - Guo-Ping Zhao
- Shanghai - MOST Key Laboratory of Health and Disease Genomics, Chinese National Human Genome Center at Shanghai, Shanghai, China
- State Key Laboratory of Genetic Engineering, Department of Microbiology, School of Life Science, Fudan University, Shanghai, China
- National Engineering Center for Biochip Research at Shanghai, Shanghai, China
- Laboratory of Molecular Microbiology, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Huanchun Chen
- Division of Animal Infectious Disease, State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
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12
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García-Gómez E, Vaca S, Pérez-Méndez A, Ibarra-Caballero J, Pérez-Márquez V, Tenorio VR, Negrete-Abascal E. Gallibacterium anatis-secreted metalloproteases degrade chicken IgG. Avian Pathol 2006; 34:426-9. [PMID: 16236577 DOI: 10.1080/03079450500267866] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Gallibacterium anatis (previously named Pasteurella haemolytica-like) is considered a normal inhabitant of genital and upper respiratory tracts of healthy chickens, but it is also associated with different pathological conditions. Secreted metalloproteases from field and reference G. anatis cultures were obtained by methanol precipitation and were characterized. Proteins of molecular mass higher than 100 kDa showing proteolytic activity were observed in 10% polyacrylamide gels copolymerized with 1% bovine casein. They were active at alkaline pH, and inhibited by ethylenediamine tetraacetic acid. Their activity was stable at 50 degrees C, but partially inhibited at 60 degrees C, and totally inhibited at higher temperatures. Secreted proteins were able to degrade chicken IgG after 24 h of incubation, and cross-reacted with a polyclonal antibody against purified protease from Actinobacillus pleuropneumoniae. Secreted metalloproteases could play a role in infections caused by G. anatis.
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Affiliation(s)
- E García-Gómez
- Carrera de Biología, Facultad de Estudios Superiores Iztacala, UNAM, Av. de los Barrios # 1, Los Reyes Iztacala, Tlalnepantla, Estado de México 54090, México
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13
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Rivero-García PC, Cruz CV, Alonso PS, Vaca S, Negrete-Abascal E. Haemophilus paragallinarumsecretes metalloproteases. Can J Microbiol 2005; 51:893-6. [PMID: 16333350 DOI: 10.1139/w05-067] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Haemophilus paragallinarum secretes metalloproteases into different culture media lacking serum. Secreted proteins, concentrated by precipitation with 70% ammonium sulphate ((NH4)2SO4) or methanol, displayed proteolytic activity at >100 kDa molecular mass in 10% polyacrylamide gels co-polymerized with porcine gelatin (0.1%). They were active in a broad pH range (4–9); pH 7.5 being the optimum. Protease activity was inhibited by 20 mmol EDTA/L and reactivated by calcium. The proteolytic activity was heat-stable at 40, 50, and 60 °C, but its activity diminished at 70 °C or higher. Secreted proteins partially degraded chicken immunoglobulin G (IgG) and cross-reacted with a polyclonal serum against a high molecular mass protease secreted by Actinobacillus pleuropneumoniae. Extracellular proteases could play a role in infectious coryza caused by H. paragallinarum.Key words: pathogenicity, secreted protein, infectious coryza.
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Affiliation(s)
- P C Rivero-García
- Carrera de Biología, Facultad de Estudios Superiores Iztacala, UNAM, Los Reyes Iztacala, Tlalnepantla, Mexico
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