1
|
Tracheal colonization factor A (TcfA) is a biomarker for rapid and specific detection of Bordetella pertussis. Sci Rep 2020; 10:15002. [PMID: 32929160 PMCID: PMC7490692 DOI: 10.1038/s41598-020-72092-6] [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: 06/01/2020] [Accepted: 08/24/2020] [Indexed: 11/23/2022] Open
Abstract
Pertussis is a highly contagious disease for which prompt, point-of-care diagnosis remains an unmet clinical need. Results from conventional test modalities (nucleic acid detection, serology, and culture) take hours to days. To overcome this challenge, we identified a new biomarker (tracheal colonization factor A, TcfA) for detection of Bordetella pertussis infection by lateral flow immunoassay (LFIA). We developed a library of 28 epitope-mapped monoclonal antibodies against TcfA and incorporated three antibodies into a LFIA. The LFIA did not cross-react with common bacterial or fungal organisms, but did react with nine distinct B. pertussis strains. The minimal linear epitope sequences targeted by the LFIA were conserved in 98% of 954 B. pertussis isolates collected across 12 countries from 1949–2017. The LFIA’s limit of detection was 3.0 × 105 CFU/mL with B. pertussis cells in buffer, 6.2 × 105 CFU/mL with nasopharyngeal washes from a non-human primate model, and 2.3 ng/mL with recombinant TcfA. The LFIA reacted with patient nasopharyngeal swab specimens containing as few as 1.8 × 106B. pertussis genomes/mL and showed no false-positives. Rapid (< 20 min) LFIA detection of TcfA as a biomarker for B. pertussis infection is feasible and may facilitate early detection of pertussis.
Collapse
|
2
|
Luu LDW, Octavia S, Aitken C, Zhong L, Raftery MJ, Sintchenko V, Lan R. Surfaceome analysis of Australian epidemic Bordetella pertussis reveals potential vaccine antigens. Vaccine 2019; 38:539-548. [PMID: 31703933 DOI: 10.1016/j.vaccine.2019.10.062] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 10/18/2019] [Accepted: 10/22/2019] [Indexed: 12/22/2022]
Abstract
Since acellular vaccines (ACV) were introduced in Australia, epidemic Bordetella pertussis strains changed from single nucleotide polymorphism (SNP) cluster II to SNP cluster I. Our previous proteomic analysis identified potential proteomic adaptations in the whole cell and secretome of SNP cluster I. Additionally, current ACVs were shown to be less efficacious against cluster I in mice models and there is a pressing need to discover new antigens to improve the ACV. One important source of novel antigens is the surfaceome. Therefore, in this study we established surface shaving in B. pertussis to compare the surfaceome of SNP cluster I (L1423) and II (L1191), and identify novel surface antigens for vaccine development. Surface shaving using 1 μg of trypsin for 5 min identified 126 proteins with the most abundant being virulence-associated and known outer membrane proteins. Cell viability counts showed minimal lysis from shaving. The proportion of immunogenic proteins was higher in the surfaceome than in the whole cell and secretome. Key differences in the surfaceome were identified between SNP cluster I and II, consistent with those identified in the whole cell proteome and secretome. These differences include unique transport proteins and decreased immunogenic proteins in L1423, and provides further evidence of proteomic adaptation in SNP cluster I. Finally, a comparison of proteins in each sub-proteome identified 22 common proteins. These included 11 virulence proteins (Prn, PtxA, FhaB, CyaA, TcfA, SphB1, Vag8, BrkA, BopD, Bsp22 and BipA) and 11 housekeeping proteins (TuF, CtpA, TsF, OmpH, GltA, SucC, SucD, FusA, GroEL, BP3330 and BP3561) which were immunogenic, essential and consistently expressed thus demonstrating their potential as future targets. This study established surface shaving in B. pertussis, confirmed key expression differences and identified unknown surface proteins which may be potential vaccine antigens.
Collapse
Affiliation(s)
- Laurence Don Wai Luu
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, New South Wales, Australia
| | - Sophie Octavia
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, New South Wales, Australia
| | - Chelsea Aitken
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, New South Wales, Australia
| | - Ling Zhong
- Bioanalytical Mass Spectrometry Facility, University of New South Wales, Sydney, New South Wales, Australia
| | - Mark J Raftery
- Bioanalytical Mass Spectrometry Facility, University of New South Wales, Sydney, New South Wales, Australia
| | - Vitali Sintchenko
- Centre for Infectious Diseases and Microbiology-Public Health, Institute of Clinical Pathology and Medical Research - Pathology West, Westmead Hospital, New South Wales, Australia; Marie Bashir Institute for Infectious Diseases and Biosecurity, Sydney Medical School, University of Sydney, New South Wales, Australia
| | - Ruiting Lan
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, New South Wales, Australia.
| |
Collapse
|
3
|
Luu LDW, Octavia S, Zhong L, Raftery MJ, Sintchenko V, Lan R. Proteomic Adaptation of Australian Epidemic Bordetella pertussis. Proteomics 2018; 18:e1700237. [PMID: 29464899 DOI: 10.1002/pmic.201700237] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 02/08/2018] [Indexed: 12/20/2022]
Abstract
Bordetella pertussis causes whooping cough. The predominant strains in Australia changed to single nucleotide polymorphism (SNP) cluster I (pertussis toxin promoter allele ptxP3/pertactin gene allele prn2) from cluster II (non-ptxP3/non-prn2). Cluster I was mostly responsible for the 2008-2012 Australian epidemic and was found to have higher fitness compared to cluster II using an in vivo mouse competition assay, regardless of host's immunization status. This study aimed to identify proteomic differences that explain higher fitness in cluster I using isobaric tags for relative and absolute quantification (iTRAQ), and high-resolution multiple reaction monitoring (MRM-hr). A few key differences in the whole cell and secretome were identified between the cluster I and II strains tested. In the whole cell, nine proteins were upregulated (>1.2 fold change, q < 0.05) and three were downregulated (<0.8 fold change, q < 0.05) in cluster I. One downregulated protein was BP1569, a TLR2 agonist for Th1 immunity. In the secretome, 12 proteins were upregulated and 1 was downregulated which was Bsp22, a type III secretion system (T3SS) protein. Furthermore, there was a trend of downregulation in three T3SS effectors and other virulence factors. Three proteins were upregulated in both whole cell and supernatant: BP0200, molybdate ABC transporter (ModB), and tracheal colonization factor A (TcfA). Important expression differences in lipoprotein, T3SS, and transport proteins between the cluster I and II strains were identified. These differences may affect immune evasion, virulence and metabolism, and play a role in increased fitness of cluster I.
Collapse
Affiliation(s)
- Laurence Don Wai Luu
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, New South Wales, Australia
| | - Sophie Octavia
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, New South Wales, Australia
| | - Ling Zhong
- Mark Wainwright Analytical Centre, University of New South Wales, Sydney, New South Wales, Australia
| | - Mark J Raftery
- Mark Wainwright Analytical Centre, University of New South Wales, Sydney, New South Wales, Australia
| | - Vitali Sintchenko
- Centre for Infectious Diseases and Microbiology-Public Health, Institute of Clinical Pathology and Medical Research-Pathology West, Westmead Hospital, New South Wales, Australia
- Marie Bashir Institute for Infectious Diseases and Biosecurity, Sydney Medical School, University of Sydney, New South Wales, Australia
| | - Ruiting Lan
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, New South Wales, Australia
| |
Collapse
|
4
|
Rivera-Millot A, Lesne E, Solans L, Coutte L, Bertrand-Michel J, Froguel P, Dhennin V, Hot D, Locht C, Antoine R, Jacob-Dubuisson F. Characterization of a Bvg-regulated fatty acid methyl-transferase in Bordetella pertussis. PLoS One 2017; 12:e0176396. [PMID: 28493897 PMCID: PMC5426589 DOI: 10.1371/journal.pone.0176396] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 04/10/2017] [Indexed: 12/22/2022] Open
Abstract
The whooping cough agent Bordetella pertussis controls the expression of its large virulence regulon in a coordinated manner through the two-component signal transduction system BvgAS. In addition to the genes coding for bona fide virulence factors, the Bvg regulon comprises genes of unknown function. In this work, we characterized a new Bvg-activated gene called BP2936. Homologs of BP2936 are found in other pathogenic Bordetellae and in several other species, including plant pathogens and environmental bacteria. We showed that the gene product of BP2936 is a membrane-associated methyl-transferase of free fatty acids. We thus propose to name it FmtB, for fatty acid methyl-transferase of Bordetella. The role of this protein was tested in cellular and animal models of infection, but the loss of BP2936 did not appear to affect host-pathogen interactions in those assays. The high level of conservation of BP2936 among B. pertussis isolates nevertheless argues that it probably plays a role in the life cycle of this pathogen.
Collapse
Affiliation(s)
- Alex Rivera-Millot
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019- UMR 8204-CIIL-Centre d’Infection et d’Immunité de Lille, Lille, France
| | - Elodie Lesne
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019- UMR 8204-CIIL-Centre d’Infection et d’Immunité de Lille, Lille, France
| | - Luis Solans
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019- UMR 8204-CIIL-Centre d’Infection et d’Immunité de Lille, Lille, France
| | - Loic Coutte
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019- UMR 8204-CIIL-Centre d’Infection et d’Immunité de Lille, Lille, France
| | | | - Philippe Froguel
- University of Lille, CNRS, Institut Pasteur de Lille, UMR 8199, European Genomic Institute for Diabetes, Lille, France
- Department of Genomics of Common Diseases, School of Public Health, Imperial College London, Hammersmith Hospital, London, United Kingdom
| | - Véronique Dhennin
- University of Lille, CNRS, Institut Pasteur de Lille, UMR 8199, European Genomic Institute for Diabetes, Lille, France
| | - David Hot
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019- UMR 8204-CIIL-Centre d’Infection et d’Immunité de Lille, Lille, France
| | - Camille Locht
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019- UMR 8204-CIIL-Centre d’Infection et d’Immunité de Lille, Lille, France
| | - Rudy Antoine
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019- UMR 8204-CIIL-Centre d’Infection et d’Immunité de Lille, Lille, France
| | - Françoise Jacob-Dubuisson
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019- UMR 8204-CIIL-Centre d’Infection et d’Immunité de Lille, Lille, France
| |
Collapse
|
5
|
Luu LDW, Octavia S, Zhong L, Raftery M, Sintchenko V, Lan R. Characterisation of the Bordetella pertussis secretome under different media. J Proteomics 2017; 158:43-51. [PMID: 28242451 DOI: 10.1016/j.jprot.2017.02.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 02/13/2017] [Accepted: 02/14/2017] [Indexed: 01/07/2023]
Abstract
Our understanding of the Bordetella pertussis secretome remains limited including the role of different growth conditions in the secretome. In this study the secretome of L1423, a clinical isolate from the 2008-2012 Australian epidemic, cultured on Stainer-Scholte (SS) and Thalen-IJssel (THIJS) media for 12h was characterised using liquid chromatography-mass spectrometry (LC-MS/MS). In the supernatant, LC-MS/MS identified 260 proteins with 143 bioinformatically predicted to be secreted. Eighty percent of proteins were identified in both media. Proteins secreted were functionally associated with cell surface (41%), pathogenicity (16%) and transport (17%). The most abundant proteins identified were pathogenic proteins including toxins (PtxA and CyaA), adhesins (TcfA) and type III secretion (T3SS) proteins. There were 46 proteins found uniquely in THIJS including 8 virulence associated proteins. These included T3SS proteins, adhesins (FhaL and FhaS) and a putative toxin (BP1251). Nine proteins were found uniquely in SS and these were metabolic and transport-related proteins. None of the unique proteins detected in SS were known to be virulence associated. This study found that THIJS promotes secretion of virulence factors based on the number of unique virulence proteins found and may be a growth media of choice for the study of B. pertussis virulence and vaccine development. BIOLOGICAL SIGNIFICANCE Over the past two decades, the number of B. pertussis notifications has risen despite vaccination. There is a greater need to understand the biology behind B. pertussis infections. The secretome of B. pertussis in two different media was characterised using LC-MS/MS. The results showed that THIJS promotes secretion of importance virulence factors which may be important for the development of vaccines.
Collapse
Affiliation(s)
- Laurence Don Wai Luu
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, New South Wales, Australia
| | - Sophie Octavia
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, New South Wales, Australia
| | - Ling Zhong
- Mark Wainwright Analytical Centre, University of New South Wales, Sydney, New South Wales, Australia
| | - Mark Raftery
- Mark Wainwright Analytical Centre, University of New South Wales, Sydney, New South Wales, Australia
| | - Vitali Sintchenko
- Centre for Infectious Diseases and Microbiology-Public Health, Institute of Clinical Pathology and Medical Research - Pathology West, Westmead Hospital, New South Wales, Australia; Marie Bashir Institute for Infectious Diseases and Biosecurity, Sydney Medical School, University of Sydney, New South Wales, Australia
| | - Ruiting Lan
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, New South Wales, Australia.
| |
Collapse
|
6
|
Cattelan N, Villalba MI, Parisi G, Arnal L, Serra DO, Aguilar M, Yantorno O. Outer membrane protein OmpQ of Bordetella bronchiseptica is required for mature biofilm formation. MICROBIOLOGY-SGM 2015; 162:351-363. [PMID: 26673448 DOI: 10.1099/mic.0.000224] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Bordetella bronchiseptica, an aerobic Gram-negative bacterium, is capable of colonizing the respiratory tract of diverse animals and chronically persists inside the hosts by forming biofilm. Most known virulence factors in Bordetella species are regulated by the BvgAS two-component transduction system. The Bvg-activated proteins play a critical role during host infection. OmpQ is an outer membrane porin protein which is expressed under BvgAS control. Here, we studied the contribution of OmpQ to the biofilm formation process by B. bronchiseptica. We found that the lack of expression of OmpQ did not affect the growth kinetics and final biomass of B. bronchiseptica under planktonic growth conditions. The ΔompQ mutant strain displayed no differences in attachment level and in early steps of biofilm formation. However, deletion of the ompQ gene attenuated the ability of B. bronchiseptica to form a mature biofilm. Analysis of ompQ gene expression during the biofilm formation process by B. bronchiseptica showed a dynamic expression pattern, with an increase of biofilm culture at 48 h. Moreover, we demonstrated that the addition of serum anti-OmpQ had the potential to reduce the biofilm biomass formation in a dose-dependent manner. In conclusion, we showed for the first time, to the best of our knowledge, evidence of the contribution of OmpQ to a process of importance for B. bronchiseptica pathobiology. Our results indicate that OmpQ plays a role during the biofilm development process, particularly at later stages of development, and that this porin could be a potential target for strategies of biofilm formation inhibition.
Collapse
Affiliation(s)
- Natalia Cattelan
- Facultad de Ciencias Exactas, Centro de Investigación y Desarrollo en Fermentaciones Industriales (CINDEFI, CONICET-CCT-La Plata),Universidad Nacional de La Plata, La Plata,Argentina
| | - María Inés Villalba
- Facultad de Ciencias Exactas, Centro de Investigación y Desarrollo en Fermentaciones Industriales (CINDEFI, CONICET-CCT-La Plata),Universidad Nacional de La Plata, La Plata,Argentina
| | - Gustavo Parisi
- Departamento de Ciencia y Tecnología,Universidad Nacional de Quilmes, Buenos Aires,Argentina
| | - Laura Arnal
- Facultad de Ciencias Exactas, Centro de Investigación y Desarrollo en Fermentaciones Industriales (CINDEFI, CONICET-CCT-La Plata),Universidad Nacional de La Plata, La Plata,Argentina
| | - Diego Omar Serra
- Facultad de Ciencias Exactas, Centro de Investigación y Desarrollo en Fermentaciones Industriales (CINDEFI, CONICET-CCT-La Plata),Universidad Nacional de La Plata, La Plata,Argentina
| | - Mario Aguilar
- Facultad de Ciencias Exactas,Instituto de Biotecnología y Biología Molecular (IBBM, CONICET-CCT-La Plata), Universidad Nacional de La Plata, La Plata,Argentina
| | - Osvaldo Yantorno
- Facultad de Ciencias Exactas, Centro de Investigación y Desarrollo en Fermentaciones Industriales (CINDEFI, CONICET-CCT-La Plata),Universidad Nacional de La Plata, La Plata,Argentina
| |
Collapse
|
7
|
A Proteomic Characterization of Bordetella pertussis Clinical Isolates Associated with a California State Pertussis Outbreak. INTERNATIONAL JOURNAL OF PROTEOMICS 2015; 2015:536537. [PMID: 26090226 PMCID: PMC4458276 DOI: 10.1155/2015/536537] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Accepted: 05/01/2015] [Indexed: 01/25/2023]
Abstract
Bordetella pertussis (Bp) is the etiologic agent of pertussis (whooping cough), a highly communicable infection. Although pertussis is vaccine preventable, in recent years there has been increased incidence, despite high vaccine coverage. Possible reasons for the rise in cases include the following: Bp strain adaptation, waning vaccine immunity, increased surveillance, and improved clinical diagnostics. A pertussis outbreak impacted California (USA) in 2010; children and preadolescents were the most affected but the burden of disease fell mainly on infants. To identify protein biomarkers associated with this pertussis outbreak, we report a whole cellular protein characterization of six Bp isolates plus the pertussis acellular vaccine strain Bp Tohama I (T), utilizing gel-free proteomics-based mass spectrometry (MS). MS/MS tryptic peptide detection and protein database searching combined with western blot analysis revealed three Bp isolates in this study had markedly reduced detection of pertactin (Prn), a subunit of pertussis acellular vaccines. Additionally, antibody affinity capture technologies were implemented using anti-Bp T rabbit polyclonal antisera and whole cellular proteins to identify putative immunogens. Proteome profiling could shed light on pathogenesis and potentially lay the foundation for reduced infection transmission strategies and improved clinical diagnostics.
Collapse
|
8
|
Moura H, Izquierdo F, Woolfitt AR, Wagner G, Pinto T, del Aguila C, Barr JR. Detection of biomarkers of pathogenic Naegleria fowleri through mass spectrometry and proteomics. J Eukaryot Microbiol 2014; 62:12-20. [PMID: 25231600 DOI: 10.1111/jeu.12178] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Revised: 07/21/2014] [Accepted: 08/14/2014] [Indexed: 11/28/2022]
Abstract
Emerging methods based on mass spectrometry (MS) can be used in the rapid identification of microorganisms. Thus far, these practical and rapidly evolving methods have mainly been applied to characterize prokaryotes. We applied matrix-assisted laser-desorption-ionization-time-of-flight mass spectrometry MALDI-TOF MS in the analysis of whole cells of 18 N. fowleri isolates belonging to three genotypes. Fourteen originated from the cerebrospinal fluid or brain tissue of primary amoebic meningoencephalitis patients and four originated from water samples of hot springs, rivers, lakes or municipal water supplies. Whole Naegleria trophozoites grown in axenic cultures were washed and mixed with MALDI matrix. Mass spectra were acquired with a 4700 TOF-TOF instrument. MALDI-TOF MS yielded consistent patterns for all isolates examined. Using a combination of novel data processing methods for visual peak comparison, statistical analysis and proteomics database searching we were able to detect several biomarkers that can differentiate all species and isolates studied, along with common biomarkers for all N. fowleri isolates. Naegleria fowleri could be easily separated from other species within the genus Naegleria. A number of peaks detected were tentatively identified. MALDI-TOF MS fingerprinting is a rapid, reproducible, high-throughput alternative method for identifying Naegleria isolates. This method has potential for studying eukaryotic agents.
Collapse
Affiliation(s)
- Hercules Moura
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, M.S. F-50, 4770 Buford Hwy NE, Atlanta, Georgia, 30341, USA
| | | | | | | | | | | | | |
Collapse
|