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Elgarini M, Mennane Z, Sobh M, Hammoumi A. Bordetella holmesii: Causative agent of pertussis. Arch Pediatr 2024; 31:172-175. [PMID: 38490892 DOI: 10.1016/j.arcped.2023.10.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 07/25/2023] [Accepted: 10/29/2023] [Indexed: 03/17/2024]
Abstract
Bordetella holmesii is a bacterium recently recognized in 1995. It is a gram-negative coccobacillus that can cause pertussis-like symptoms in humans as well as invasive infections. It is often confused with Bordetella pertussis because routine diagnostic tests for whooping cough are not species-specific. The prevalence of B. holmesii as a cause of pertussis has increased in several countries. Therefore, B. holmesii assays are important for determining the epidemiology of pertussis, for the choice of an effective treatment, and for detecting vaccination failures.
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Affiliation(s)
- Meryem Elgarini
- Department of Biology, Faculty of Sciences Ain Chock, University Hassan II, Casablanca, Morocco.
| | - Zakaria Mennane
- Department of Biology, Faculty of Sciences, University Abdalmalek Saadi, Tetouan, Morocco
| | - Mohammed Sobh
- Department of Biology, Faculty of Sciences Ain Chock, University Hassan II, Casablanca, Morocco
| | - Abdearrahmane Hammoumi
- Department of Biology, Faculty of Sciences Ain Chock, University Hassan II, Casablanca, Morocco
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2
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Missed pertussis diagnosis during co-infection with Bordetella holmesii. Eur J Clin Microbiol Infect Dis 2022; 41:1227-1235. [PMID: 36050561 DOI: 10.1007/s10096-022-04488-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 08/26/2022] [Indexed: 11/03/2022]
Abstract
The purpose of this study is to identify predictive factors associated with missed diagnosis of B. pertussis-B. holmesii co-infection by assessing the analytical performance of a commercially available multiplexed PCR assay and by building a prediction model based on clinical signs and symptoms for detecting co-infections. This is a retrospective study on the electronic health records of all clinical samples that tested positive to either B. pertussis or B. holmesii from January 2015 to January 2018 at Geneva University Hospitals. Multivariate logistic regression was used to build a model for co-infection prediction based on the electronic health record chart review. Limit of detection was determined for all targets of the commercial multiplexed PCR assay used on respiratory samples. A regression model, developed from clinical symptoms and signs, predicted B. pertussis and B. holmesii co-infection with an accuracy of 82.9% (95% CI 67.9-92.8%, p value = .012), for respiratory samples positive with any of the two tested Bordetella species. We found that the LOD of the PCR reaction targeting ptxS1 is higher than that reported by the manufacturer by a factor 10. The current testing strategy misses B. pertussis and B. holmesii co-infections by reporting only B. holmesii infections. Thus, we advocate to perform serological testing for detecting a response against pertussis toxin whenever a sample is found positive for B. holmesii. These findings are important, both from a clinical and epidemiological point of view, as the former impacts the choice of antimicrobial drugs and the latter biases surveillance data, by underestimating B. pertussis infections during co-infections.
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Bridel S, Bouchez V, Brancotte B, Hauck S, Armatys N, Landier A, Mühle E, Guillot S, Toubiana J, Maiden MCJ, Jolley KA, Brisse S. A comprehensive resource for Bordetella genomic epidemiology and biodiversity studies. Nat Commun 2022; 13:3807. [PMID: 35778384 PMCID: PMC9249784 DOI: 10.1038/s41467-022-31517-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 06/21/2022] [Indexed: 11/09/2022] Open
Abstract
The genus Bordetella includes bacteria that are found in the environment and/or associated with humans and other animals. A few closely related species, including Bordetella pertussis, are human pathogens that cause diseases such as whooping cough. Here, we present a large database of Bordetella isolates and genomes and develop genotyping systems for the genus and for the B. pertussis clade. To generate the database, we merge previously existing databases from Oxford University and Institut Pasteur, import genomes from public repositories, and add 83 newly sequenced B. bronchiseptica genomes. The public database currently includes 2582 Bordetella isolates and their provenance data, and 2085 genomes ( https://bigsdb.pasteur.fr/bordetella/ ). We use core-genome multilocus sequence typing (cgMLST) to develop genotyping systems for the whole genus and for B. pertussis, as well as specific schemes to define antigenic, virulence and macrolide resistance profiles. Phylogenetic analyses allow us to redefine evolutionary relationships among known Bordetella species, and to propose potential new species. Our database provides an expandable resource for genotyping of environmental and clinical Bordetella isolates, thus facilitating evolutionary and epidemiological research on whooping cough and other Bordetella infections.
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Affiliation(s)
- Sébastien Bridel
- Institut Pasteur, Université Paris Cité, Biodiversity and Epidemiology of Bacterial Pathogens, Paris, France
| | - Valérie Bouchez
- Institut Pasteur, Université Paris Cité, Biodiversity and Epidemiology of Bacterial Pathogens, Paris, France.,National Reference Center for Whooping Cough and other Bordetella Infections, Institut Pasteur, Paris, France
| | - Bryan Brancotte
- Institut Pasteur, Université Paris Cité, Bioinformatics and Biostatistics Hub, F-75015, Paris, France
| | - Sofia Hauck
- Department of Zoology, University of Oxford, 11a Mansfield Road, Oxford, OX1 3SZ, UK
| | - Nathalie Armatys
- Institut Pasteur, Université Paris Cité, Biodiversity and Epidemiology of Bacterial Pathogens, Paris, France.,National Reference Center for Whooping Cough and other Bordetella Infections, Institut Pasteur, Paris, France
| | - Annie Landier
- Institut Pasteur, Université Paris Cité, Biodiversity and Epidemiology of Bacterial Pathogens, Paris, France.,National Reference Center for Whooping Cough and other Bordetella Infections, Institut Pasteur, Paris, France
| | - Estelle Mühle
- Collection de l´Institut Pasteur, Institut Pasteur, Université Paris Cité, Paris, France
| | - Sophie Guillot
- Institut Pasteur, Université Paris Cité, Biodiversity and Epidemiology of Bacterial Pathogens, Paris, France.,National Reference Center for Whooping Cough and other Bordetella Infections, Institut Pasteur, Paris, France
| | - Julie Toubiana
- Institut Pasteur, Université Paris Cité, Biodiversity and Epidemiology of Bacterial Pathogens, Paris, France.,National Reference Center for Whooping Cough and other Bordetella Infections, Institut Pasteur, Paris, France.,Department of General Pediatrics and Pediatric Infectious Diseases, Université Paris Cité, Hôpital Necker-Enfants Malades, APHP, Paris, France
| | - Martin C J Maiden
- Department of Zoology, University of Oxford, 11a Mansfield Road, Oxford, OX1 3SZ, UK
| | - Keith A Jolley
- Department of Zoology, University of Oxford, 11a Mansfield Road, Oxford, OX1 3SZ, UK
| | - Sylvain Brisse
- Institut Pasteur, Université Paris Cité, Biodiversity and Epidemiology of Bacterial Pathogens, Paris, France. .,National Reference Center for Whooping Cough and other Bordetella Infections, Institut Pasteur, Paris, France.
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Ucieklak K, Koj S, Niedziela T. Bordetella holmesii Lipopolysaccharide Hide and Seek Game with Pertussis: Structural Analysis of the O-Specific Polysaccharide and the Core Oligosaccharide of the Type Strain ATCC 51541. Int J Mol Sci 2020; 21:E6433. [PMID: 32899371 PMCID: PMC7504554 DOI: 10.3390/ijms21176433] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 08/26/2020] [Accepted: 08/28/2020] [Indexed: 11/16/2022] Open
Abstract
Whooping cough is a highly contagious disease caused predominantly by Bordetella pertussis, but it also comprises of a pertussis-like illness caused by B. holmesii. The virulence factors of B. holmesii and their role in the pathogenesis remain unknown. Lipopolysaccharide is the main surface antigen of all Bordetellae. Data on the structural features of the lipopolysaccharide (LPS) of B. holmesii are scarce. The poly- and oligosaccharide components released by mild acidic hydrolysis of the LPS were separated and investigated by 1H and 13C NMR spectroscopy, mass spectrometry, and chemical methods. The structures of the O-specific polysaccharide and the core oligosaccharide of B. holmesii ATCC 51541 have been identified for the first time. The novel pentasaccharide repeating unit of the B. holmesii O-specific polysaccharide has the following structure: {→2)-α-l-Rhap-(1→6)-α-d-Glcp-(1→4)-[β-d-GlcpNAc-(1→3]-α-d-Galp-(1→3)-α-d-GlcpNAc-(1→}n. The SDS-PAGE and serological cross-reactivities of the B. holmesii LPS suggested the similarity between the core oligosaccharides of B. holmesii ATCC 51541 and B. pertussis strain 606. The main oligosaccharide fraction contained a nonasaccharide. The comparative analysis of the NMR spectra of B. holmesii core oligosaccharide fraction with this of the B. pertussis strain 606 indicated that the investigated core oligosaccharides were identical.
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Affiliation(s)
| | | | - Tomasz Niedziela
- Hirszfeld Institute of Immunology and Experimental Therapy, 53-114 Wroclaw, Poland; (K.U.); (S.K.)
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Genotypic and phenotypic adaptation of pathogens: lesson from the genus Bordetella. Curr Opin Infect Dis 2020; 32:223-230. [PMID: 30921085 DOI: 10.1097/qco.0000000000000549] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
PURPOSE OF REVIEW To relate genomic changes to phenotypic adaptation and evolution from environmental bacteria to obligate human pathogens, focusing on the examples within Bordetella species. RECENT FINDINGS Recent studies showed that animal-pathogenic and human-pathogenic Bordetella species evolved from environmental ancestors in soil. The animal-pathogenic Bordetella bronchiseptica can hijack the life cycle of the soil-living amoeba Dictyostelium discoideum, surviving inside single-celled trophozoites, translocating to the fruiting bodies and disseminating along with amoeba spores. The association with amoeba may have been a 'training ground' for bacteria during the evolution to pathogens. Adaptation to an animal-associated life style was characterized by decreasing metabolic versatility and genome size and by acquisition of 'virulence factors' mediating the interaction with the new animal hosts. Subsequent emergence of human-specific pathogens, such as Bordetella pertussis from zoonoses of broader host range progenitors, was accompanied by a dramatic reduction in genome size, marked by the loss of hundreds of genes. SUMMARY The evolution of Bordetella from environmental microbes to animal-adapted and obligate human pathogens was accompanied by significant genome reduction with large-scale gene loss during divergence.
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Toubiana J, Azarnoush S, Bouchez V, Landier A, Guillot S, Matczak S, Bonacorsi S, Brisse S. Bordetella parapertussis Bacteremia: Clinical Expression and Bacterial Genomics. Open Forum Infect Dis 2019; 6:ofz122. [PMID: 30976607 PMCID: PMC6453521 DOI: 10.1093/ofid/ofz122] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Accepted: 03/04/2019] [Indexed: 11/13/2022] Open
Abstract
Whooping cough's primary etiological agent is Bordetella pertussis. The closely related Bordetella parapertussis rarely causes severe disease. Here we report an unusual case of bacteremia caused by B. parapertussis, review the literature, and characterize the genomic sequence of the bacterial isolate in comparison with B. parapertussis isolates from respiratory infections.
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Affiliation(s)
- Julie Toubiana
- Institut Pasteur, Biodiversity and Epidemiology of Bacterial Pathogens, Paris, France.,National Reference Center for Whooping Cough and Other Bordetella Infections, Paris, France.,Department of General Pediatrics and Pediatric Infectious Diseases, Necker-Enfants Malades Hospital, APHP, Paris, France
| | - Saba Azarnoush
- Department of Hematology, Robert Debré Hospital, APHP, Paris, France
| | - Valérie Bouchez
- Institut Pasteur, Biodiversity and Epidemiology of Bacterial Pathogens, Paris, France
| | - Annie Landier
- Institut Pasteur, Biodiversity and Epidemiology of Bacterial Pathogens, Paris, France
| | - Sophie Guillot
- Institut Pasteur, Biodiversity and Epidemiology of Bacterial Pathogens, Paris, France
| | - Soraya Matczak
- Department of General Pediatrics and Pediatric Infectious Diseases, Necker-Enfants Malades Hospital, APHP, Paris, France
| | | | - Sylvain Brisse
- Institut Pasteur, Biodiversity and Epidemiology of Bacterial Pathogens, Paris, France.,National Reference Center for Whooping Cough and Other Bordetella Infections, Paris, France
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Validation and Implementation of a Diagnostic Algorithm for DNA Detection of Bordetella pertussis, B. parapertussis, and B. holmesii in a Pediatric Referral Hospital in Barcelona, Spain. J Clin Microbiol 2019; 57:JCM.01231-18. [PMID: 30404946 PMCID: PMC6322476 DOI: 10.1128/jcm.01231-18] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 10/24/2018] [Indexed: 01/04/2023] Open
Abstract
This study aimed to validate a comprehensive diagnostic protocol based on real-time PCR for the rapid detection and identification of Bordetella pertussis, Bordetella parapertussis, and Bordetella holmesii, as well as its implementation in the diagnostic routine of a reference children's hospital. The new algorithm included a triplex quantitative PCR (qPCR) targeting IS481 gene (in B. pertussis, B. holmesii, and some Bordetella bronchiseptica strains), pIS1001 (B. parapertussis-specific) and rnase P as the human internal control. Two confirmatory singleplex tests for B. pertussis (ptxA-Pr) and B. holmesii (hIS1001) were performed if IS481 was positive. Analytical validation included determination of linear range, linearity, efficiency, precision, sensitivity, and a reference panel with clinical samples. Once validated, the new algorithm was prospectively implemented in children with clinical suspicion of whooping cough presenting to Hospital Sant Joan de Deu (Barcelona, Spain) over 12 months. Lower limits of detection obtained were 4.4, 13.9, and 27.3 genomic equivalents/ml of sample for IS481 (on B. pertussis), pIS1001 and hIS1001, and 777.9 for ptxA-Pr. qPCR efficiencies ranged from 86.0% to 96.9%. Intra- and interassay variabilities were <3% and <5%, respectively. Among 566 samples analyzed, B. pertussis, B. holmesii, and B. parapertussis were detected in 11.1%, 0.9% (only in females >4 years old), and 0.2% of samples, respectively. The new algorithm proved to be a useful microbiological diagnostic tool for whooping cough, demonstrating a low rate of other non-pertussis Bordetella species in our surveilled area.
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8
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Whole-Genome Sequences of Bacteremia Isolates of Bordetella holmesii. GENOME ANNOUNCEMENTS 2017; 5:5/39/e01023-17. [PMID: 28963213 PMCID: PMC5624759 DOI: 10.1128/genomea.01023-17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Bordetella holmesii causes respiratory and invasive diseases in humans, but its pathogenesis remains poorly understood. We report here the genome sequences of seven bacteremia isolates of B. holmesii, including the type strain. Comparative analysis of these sequences may aid studies of B. holmesii biology and assist in the development of species-specific diagnostic strategies.
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Abstract
Since the first description of Bordetella holmesii in 1995, almost 100 publications have contributed to the increasing knowledge of this emerging bacterium. Although first reported to induce bacteremia mainly in immunocompromised patients, it has also been isolated in healthy persons and has shown the capacity to induce pertussis-like symptoms and other clinical entities, such as meningitis, arthritis, or endocarditis. Respiratory diseases are generally less severe than those induced by Bordetella pertussis. However, B. holmesii was found to have a higher capacity of invasiveness given the various infection sites in which it was isolated. The diagnosis is difficult, particularly as it is a slow-growing organism but also because respiratory infections are systematically misdiagnosed as B. pertussis. Treatment is delicate, as its susceptibility to macrolides (prescribed in respiratory infections) and ceftriaxone (used in invasive disease) is challenged. Regarding prevention, there is no consensus on prophylactic treatment following index cases and no vaccine is available. Epidemiological data are also sparse, with few prevalence studies available. In this chapter, we provide an overview of the current state of knowledge on B. holmesii.
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Saito M, Odanaka K, Otsuka N, Kamachi K, Watanabe M. Development of vaccines against pertussis caused by Bordetella holmesii using a mouse intranasal challenge model. Microbiol Immunol 2017; 60:599-608. [PMID: 27515393 DOI: 10.1111/1348-0421.12409] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 08/02/2016] [Accepted: 08/10/2016] [Indexed: 11/28/2022]
Abstract
Bordetella holmesii is recognized as the third causative agent of pertussis (whooping cough) in addition to Bordetella pertussis and Bordetella parapertussis. Pertussis caused by B. holmesii is not rare around the world. However, to date, there is no effective vaccine against B. holmesii. We examined the protective potency of pertussis vaccines available in Japan and vaccines prepared from B. holmesii. A murine model of respiratory infection was exploited to evaluate protective potency. No Japanese commercial pertussis vaccines were effective against B. holmesii. In contrast, a wBH vaccine and an aBH vaccine prepared from B. holmesii were both protective. Passive immunization with sera from mice immunized with aBH vaccine established protection against B. holmesii, indicating that B. holmesii-specific serum antibodies might play an important role in protection. Immuno-proteomic analysis with sera from mice immunized with aBH vaccine revealed that the sera recognized a BipA-like protein of B. holmesii. An aBH vaccine prepared from a BipA-like protein-deficient mutant strain did not have a protective effect against B. holmesii. Taken together, our results suggest that the BipA-like protein plays an important role in the protective efficacy of aBH vaccine.
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Affiliation(s)
- Momoko Saito
- Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Keita Odanaka
- Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Nao Otsuka
- Department of Bacteriology II, National Institute of Infectious Diseases, 4-7-1 Gakuen, Musashimurayama, Tokyo 208-0011, Japan
| | - Kazunari Kamachi
- Department of Bacteriology II, National Institute of Infectious Diseases, 4-7-1 Gakuen, Musashimurayama, Tokyo 208-0011, Japan
| | - Mineo Watanabe
- Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan. .,Laboratory of Medical Microbiology, Kitasato Institute for Life Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan.
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Linz B, Ivanov YV, Preston A, Brinkac L, Parkhill J, Kim M, Harris SR, Goodfield LL, Fry NK, Gorringe AR, Nicholson TL, Register KB, Losada L, Harvill ET. Acquisition and loss of virulence-associated factors during genome evolution and speciation in three clades of Bordetella species. BMC Genomics 2016; 17:767. [PMID: 27716057 PMCID: PMC5045587 DOI: 10.1186/s12864-016-3112-5] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Accepted: 09/23/2016] [Indexed: 11/10/2022] Open
Abstract
Background The genus Bordetella consists of nine species that include important respiratory pathogens such as the ‘classical’ species B. bronchiseptica, B. pertussis and B. parapertussis and six more distantly related and less extensively studied species. Here we analyze sequence diversity and gene content of 128 genome sequences from all nine species with focus on the evolution of virulence-associated factors. Results Both genome-wide sequence-based and gene content-based phylogenetic trees divide the genus into three species clades. The phylogenies are congruent between species suggesting genus-wide co-evolution of sequence diversity and gene content, but less correlated within species, mainly because of strain-specific presence of many different prophages. We compared the genomes with focus on virulence-associated genes and identified multiple clade-specific, species-specific and strain-specific events of gene acquisition and gene loss, including genes encoding O-antigens, protein secretion systems and bacterial toxins. Gene loss was more frequent than gene gain throughout the evolution, and loss of hundreds of genes was associated with the origin of several species, including the recently evolved human-restricted B. pertussis and B. holmesii, B. parapertussis and the avian pathogen B. avium. Conclusions Acquisition and loss of multiple genes drive the evolution and speciation in the genus Bordetella, including large scale gene loss associated with the origin of several species. Recent loss and functional inactivation of genes, including those encoding pertussis vaccine components and bacterial toxins, in individual strains emphasize ongoing evolution. Electronic supplementary material The online version of this article (doi:10.1186/s12864-016-3112-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Bodo Linz
- Department of Veterinary and Biomedical Sciences, Pennsylvania State University, University Park, PA 16802, USA.
| | - Yury V Ivanov
- Department of Veterinary and Biomedical Sciences, Pennsylvania State University, University Park, PA 16802, USA
| | - Andrew Preston
- The Millner Centre for Evolution and Department of Biology and Biochemistry, University of Bath, Bath, UK
| | | | - Julian Parkhill
- Pathogen Genomics, The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge, UK
| | - Maria Kim
- J. Craig Venter Institute, Rockville, MD, USA
| | - Simon R Harris
- Pathogen Genomics, The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge, UK
| | - Laura L Goodfield
- Department of Veterinary and Biomedical Sciences, Pennsylvania State University, University Park, PA 16802, USA
| | - Norman K Fry
- Public Health England, Respiratory and Vaccine Preventable Bacteria Reference Unit, London, UK
| | | | - Tracy L Nicholson
- USDA, Agricultural Research Service, National Animal Disease Center, Ames, IA, USA
| | - Karen B Register
- USDA, Agricultural Research Service, National Animal Disease Center, Ames, IA, USA
| | | | - Eric T Harvill
- Department of Veterinary and Biomedical Sciences, Pennsylvania State University, University Park, PA 16802, USA. .,Singapore Centre on Environmental Life Sciences Engineering, Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 637551, Singapore. .,Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA.
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Hiramatsu Y, Saito M, Otsuka N, Suzuki E, Watanabe M, Shibayama K, Kamachi K. BipA Is Associated with Preventing Autoagglutination and Promoting Biofilm Formation in Bordetella holmesii. PLoS One 2016; 11:e0159999. [PMID: 27448237 PMCID: PMC4957798 DOI: 10.1371/journal.pone.0159999] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 07/12/2016] [Indexed: 11/18/2022] Open
Abstract
Bordetella holmesii causes both invasive and respiratory diseases in humans. Although the number of cases of pertussis-like respiratory illnesses due to B. holmesii infection has increased in the last decade worldwide, little is known about the virulence factors of the organism. Here, we analyzed a B. holmesii isolate that forms large aggregates and precipitates in suspension, and subsequently demonstrated that the autoagglutinating isolate is deficient in Bordetella intermediate protein A (BipA) and that this deletion is caused by a frame-shift mutation in the bipA gene. A BipA-deficient mutant generated by homologous recombination also exhibited the autoagglutination phenotype. Moreover, the BipA mutant adhered poorly to an abiotic surface and failed to form biofilms, as did two other B. holmesii autoagglutinating strains, ATCC 51541 and ATCC 700053, which exhibit transcriptional down-regulation of bipA gene expression, indicating that autoagglutination indirectly inhibits biofilm formation. In a mouse intranasal infection model, the BipA mutant showed significantly lower levels of initial lung colonization than did the parental strain (P < 0.01), suggesting that BipA might be a critical virulence factor in B. holmesii respiratory infection. Together, our findings suggest that BipA production plays an essential role in preventing autoagglutination and indirectly promoting biofilm formation by B. holmesii.
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Affiliation(s)
- Yukihiro Hiramatsu
- Department of Bacteriology II, National Institute of Infectious Diseases, Tokyo, Japan
- * E-mail: (YH); (KK)
| | - Momoko Saito
- Graduate School of Infection Control Sciences, Kitasato University, Tokyo, Japan
| | - Nao Otsuka
- Department of Bacteriology II, National Institute of Infectious Diseases, Tokyo, Japan
| | - Eri Suzuki
- Graduate School of Infection Control Sciences, Kitasato University, Tokyo, Japan
| | - Mineo Watanabe
- Graduate School of Infection Control Sciences, Kitasato University, Tokyo, Japan
| | - Keigo Shibayama
- Department of Bacteriology II, National Institute of Infectious Diseases, Tokyo, Japan
| | - Kazunari Kamachi
- Department of Bacteriology II, National Institute of Infectious Diseases, Tokyo, Japan
- * E-mail: (YH); (KK)
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13
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Ivanov YV, Shariat N, Register KB, Linz B, Rivera I, Hu K, Dudley EG, Harvill ET. A newly discovered Bordetella species carries a transcriptionally active CRISPR-Cas with a small Cas9 endonuclease. BMC Genomics 2015; 16:863. [PMID: 26502932 PMCID: PMC4624362 DOI: 10.1186/s12864-015-2028-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Accepted: 10/06/2015] [Indexed: 12/21/2022] Open
Abstract
Background Clustered regularly interspaced short palindromic repeats (CRISPR) and CRISPR-associated genes (cas) are widely distributed among bacteria. These systems provide adaptive immunity against mobile genetic elements specified by the spacer sequences stored within the CRISPR. Methods The CRISPR-Cas system has been identified using Basic Local Alignment Search Tool (BLAST) against other sequenced and annotated genomes and confirmed via CRISPRfinder program. Using Polymerase Chain Reactions (PCR) and Sanger DNA sequencing, we discovered CRISPRs in additional bacterial isolates of the same species of Bordetella. Transcriptional activity and processing of the CRISPR have been assessed via RT-PCR. Results Here we describe a novel Type II-C CRISPR and its associated genes—cas1, cas2, and cas9—in several isolates of a newly discovered Bordetella species. The CRISPR-cas locus, which is absent in all other Bordetella species, has a significantly lower GC-content than the genome-wide average, suggesting acquisition of this locus via horizontal gene transfer from a currently unknown source. The CRISPR array is transcribed and processed into mature CRISPR RNAs (crRNA), some of which have homology to prophages found in closely related species B. hinzii. Conclusions Expression of the CRISPR-Cas system and processing of crRNAs with perfect homology to prophages present in closely related species, but absent in that containing this CRISPR-Cas system, suggest it provides protection against phage predation. The 3,117-bp cas9 endonuclease gene from this novel CRISPR-Cas system is 990 bp smaller than that of Streptococcus pyogenes, the 4,017-bp allele currently used for genome editing, and which may make it a useful tool in various CRISPR-Cas technologies. Electronic supplementary material The online version of this article (doi:10.1186/s12864-015-2028-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yury V Ivanov
- Department of Veterinary and Biomedical Sciences, Center for Infectious Disease Dynamics, Center for Molecular Immunology and Infectious Diseases, Pennsylvania State University, University Park, W213 Millennium Science Complex, University Park, PA, 16802, USA.
| | - Nikki Shariat
- Department of Food Science, Center for Infectious Disease Dynamics, Center for Molecular Immunology and Infectious Diseases, Pennsylvania State University, University Park, PA, 16802, USA. .,Present address: Department of Biology, Gettysburg College, Gettysburg, PA, 17325, USA.
| | - Karen B Register
- USDA, Agricultural Research Service, National Animal Disease Center, Ames, IA, 50010, USA.
| | - Bodo Linz
- Department of Veterinary and Biomedical Sciences, Center for Infectious Disease Dynamics, Center for Molecular Immunology and Infectious Diseases, Pennsylvania State University, University Park, W213 Millennium Science Complex, University Park, PA, 16802, USA.
| | - Israel Rivera
- Department of Veterinary and Biomedical Sciences, Center for Infectious Disease Dynamics, Center for Molecular Immunology and Infectious Diseases, Pennsylvania State University, University Park, W213 Millennium Science Complex, University Park, PA, 16802, USA.
| | - Kai Hu
- Department of Veterinary and Biomedical Sciences, Center for Infectious Disease Dynamics, Center for Molecular Immunology and Infectious Diseases, Pennsylvania State University, University Park, W213 Millennium Science Complex, University Park, PA, 16802, USA.
| | - Edward G Dudley
- Department of Food Science, Center for Infectious Disease Dynamics, Center for Molecular Immunology and Infectious Diseases, Pennsylvania State University, University Park, PA, 16802, USA.
| | - Eric T Harvill
- Department of Veterinary and Biomedical Sciences, Center for Infectious Disease Dynamics, Center for Molecular Immunology and Infectious Diseases, Pennsylvania State University, University Park, W213 Millennium Science Complex, University Park, PA, 16802, USA. .,Lee Kong Chian School of Medicine and Singapore Centre on Environmental Life Sciences Engineering, Nanyang Technological University, Singapore, 637551, Singapore.
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14
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Belcher T, Preston A. Bordetella pertussis evolution in the (functional) genomics era. Pathog Dis 2015; 73:ftv064. [PMID: 26297914 DOI: 10.1093/femspd/ftv064] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/20/2015] [Indexed: 11/12/2022] Open
Abstract
The incidence of whooping cough caused by Bordetella pertussis in many developed countries has risen dramatically in recent years. This has been linked to the use of an acellular pertussis vaccine. In addition, it is thought that B. pertussis is adapting under acellular vaccine mediated immune selection pressure, towards vaccine escape. Genomics-based approaches have revolutionized the ability to resolve the fine structure of the global B. pertussis population and its evolution during the era of vaccination. Here, we discuss the current picture of B. pertussis evolution and diversity in the light of the current resurgence, highlight import questions raised by recent studies in this area and discuss the role that functional genomics can play in addressing current knowledge gaps.
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Affiliation(s)
- Thomas Belcher
- Department of Biology and Biochemistry, University of Bath, Bath BA2 7AY, UK
| | - Andrew Preston
- Department of Biology and Biochemistry, University of Bath, Bath BA2 7AY, UK
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15
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Pittet LF, Posfay-Barbe KM. Bordetella holmesiiinfection: current knowledge and a vision for future research. Expert Rev Anti Infect Ther 2015; 13:965-71. [DOI: 10.1586/14787210.2015.1056161] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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16
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Harmonization of Bordetella pertussis real-time PCR diagnostics in the United States in 2012. J Clin Microbiol 2014; 53:118-23. [PMID: 25355770 DOI: 10.1128/jcm.02368-14] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Real-time PCR (rt-PCR) is an important diagnostic tool for the identification of Bordetella pertussis, Bordetella holmesii, and Bordetella parapertussis. Most U.S. public health laboratories (USPHLs) target IS481, present in 218 to 238 copies in the B. pertussis genome and 32 to 65 copies in B. holmesii. The CDC developed a multitarget PCR assay to differentiate B. pertussis, B. holmesii, and B. parapertussis and provided protocols and training to 19 USPHLs. The 2012 performance exercise (PE) assessed the capability of USPHLs to detect these three Bordetella species in clinical samples. Laboratories were recruited by the Wisconsin State Proficiency Testing program through the Association of Public Health Laboratories, in partnership with the CDC. Spring and fall PE panels contained 12 samples each of viable Bordetella and non-Bordetella species in saline. Fifty and 53 USPHLs participated in the spring and fall PEs, respectively, using a variety of nucleic acid extraction methods, PCR platforms, and assays. Ninety-six percent and 94% of laboratories targeted IS481 in spring and fall, respectively, in either singleplex or multiplex assays. In spring and fall, respectively, 72% and 79% of USPHLs differentiated B. pertussis and B. holmesii and 68% and 72% identified B. parapertussis. IS481 cycle threshold (CT) values for B. pertussis samples had coefficients of variation (CV) ranging from 10% to 28%. Of the USPHLs that differentiated B. pertussis and B. holmesii, sensitivity was 96% and specificity was 95% for the combined panels. The 2012 PE demonstrated increased harmonization of rt-PCR Bordetella diagnostic protocols in USPHLs compared to that of the previous survey.
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