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Hadjineophytou C, Loh E, Koomey M, Scott NE. Combining FAIMS based glycoproteomics and DIA proteomics reveals widespread proteome alterations in response to glycosylation occupancy changes in Neisseria gonorrhoeae. Proteomics 2024; 24:e2300496. [PMID: 38361220 DOI: 10.1002/pmic.202300496] [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: 11/05/2023] [Revised: 02/01/2024] [Accepted: 02/06/2024] [Indexed: 02/17/2024]
Abstract
Protein glycosylation is increasingly recognized as a common protein modification across bacterial species. Within the Neisseria genus O-linked protein glycosylation is conserved yet closely related Neisseria species express O-oligosaccharyltransferases (PglOs) with distinct targeting activities. Within this work, we explore the targeting capacity of different PglOs using Field Asymmetric Waveform Ion Mobility Spectrometry (FAIMS) fractionation and Data-Independent Acquisition (DIA) to allow the characterization of the impact of changes in glycosylation on the proteome of Neisseria gonorrhoeae. We demonstrate FAIMS expands the known glycoproteome of wild type N. gonorrhoeae MS11 and enables differences in glycosylation to be assessed across strains expressing different pglO allelic chimeras with unique substrate targeting activities. Combining glycoproteomic insights with DIA proteomics, we demonstrate that alterations within pglO alleles have widespread impacts on the proteome of N. gonorrhoeae. Examination of peptides known to be targeted by glycosylation using DIA analysis supports alterations in glycosylation occupancy occurs independently of changes in protein levels and that the occupancy of glycosylation is generally low on most glycoproteins. This work thus expands our understanding of the N. gonorrhoeae glycoproteome and the roles that pglO allelic variation may play in governing genus-level protein glycosylation.
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Affiliation(s)
- Chris Hadjineophytou
- Department of Biosciences, Section for Genetics and Evolutionary Biology, University of Oslo, Oslo, Norway
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Solna, Sweden
- Clinical Microbiology, BioClinicum, Karolinska University Hospital, Solna, Sweden
| | - Edmund Loh
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Solna, Sweden
- Clinical Microbiology, BioClinicum, Karolinska University Hospital, Solna, Sweden
| | - Michael Koomey
- Department of Biosciences, Section for Genetics and Evolutionary Biology, University of Oslo, Oslo, Norway
- Department of Biosciences, Centre for Ecological and Evolutionary Synthesis, University of Oslo, Oslo, Norway
| | - Nichollas E Scott
- Department of Microbiology and Immunology, University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, Australia
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Suniga PAP, Mantovani C, dos Santos MG, do Egito AA, Verbisck NV, dos Santos LR, Dávila AMR, Zimpel CK, Zerpa MCS, Chiebao DP, de Sá Guimarães AM, de Castro Nassar AF, de Araújo FR. Glanders Diagnosis in an Asymptomatic Mare from Brazil: Insights from Serology, Microbiological Culture, Mass Spectrometry, and Genome Sequencing. Pathogens 2023; 12:1250. [PMID: 37887766 PMCID: PMC10609850 DOI: 10.3390/pathogens12101250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 09/21/2023] [Accepted: 10/06/2023] [Indexed: 10/28/2023] Open
Abstract
This manuscript elucidates the occurrence of glanders in an asymptomatic mare from Brazil presenting positive Burkholderia mallei antibody titers. The diagnosis was established through a multi-pronged approach encompassing microbiological culture, mass spectrometry, and genome sequencing. The outbreak occurred in 2019 in Tatuí, São Paulo, Brazil, and the infected mare, despite displaying no clinical symptoms, had multiple miliary lesions in the liver, as well as intense catarrhal discharge in the trachea. Samples were collected from various organs and subjected to bacterial isolation, molecular detection, and identification. The strain was identified as B. mallei using PCR and confirmed by MALDI-TOF mass spectrometry. Whole-genome sequencing revealed a genome size of 5.51 Mb with a GC content of 65.8%, 5871 genes (including 4 rRNA and 53 tRNA genes), and 5583 coding DNA sequences (CDSs). Additionally, 227 predicted pseudogenes were detected. In silico analysis of different genomic loci that allow for differentiation with Burkholderia pseudomallei confirmed the identity of the isolate as B. mallei, in addition to the characteristic genome size. The BAC 86/19 strain was identified as lineage 3, sublineage 2, which includes other strains from Brazil, India, and Iran. The genome sequencing of this strain provides valuable information that can be used to better understand the pathogen and its epidemiology, as well as to develop diagnostic tools for glanders.
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Affiliation(s)
- Paula Adas Pereira Suniga
- Postgraduate Program in Animal Science, Faculty of Veterinary Medicine and Animal Science-FAMEZ/UFMS, Federal University of Mato Grosso Do Sul, Av. Senador Filinto Muller, 2443, Campo Grande 79074-460, MS, Brazil; (P.A.P.S.); (A.A.d.E.)
- MAI/DAI Scholarship, Federal University of Mato Grosso Do Sul, Cidade Universitária, Av. Costa E Silva, Campo Grande 79070-900, MS, Brazil
| | - Cynthia Mantovani
- Embrapa Beef Cattle/Ministry of Agriculture and Livestock Scholarship, Embrapa Beef Cattle, Av. Rádio Maia, 830, Campo Grande 79106-550, MS, Brazil;
| | | | - Andréa Alves do Egito
- Postgraduate Program in Animal Science, Faculty of Veterinary Medicine and Animal Science-FAMEZ/UFMS, Federal University of Mato Grosso Do Sul, Av. Senador Filinto Muller, 2443, Campo Grande 79074-460, MS, Brazil; (P.A.P.S.); (A.A.d.E.)
- Embrapa Beef Cattle, Campo Grande 79106-550, MS, Brazil; (M.G.d.S.); (N.V.V.); (F.R.d.A.)
| | | | | | - Alberto Martín Rivera Dávila
- Computational and Systems Biology Laboratory, Graduate Program in Biodiversity and Health, Oswaldo Cruz Institute, Fiocruz, Rio de Janeiro 21040-900, RJ, Brazil;
| | - Cristina Kraemer Zimpel
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, MI 48824, USA;
| | - Maria Carolina Sisco Zerpa
- Laboratory of Applied Research in Mycobacteria, Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508-000, SP, Brazil; (M.C.S.Z.); (A.M.d.S.G.)
| | - Daniela Pontes Chiebao
- Animal Health Research Center, Biological Institute, Av. Conselheiro Rodrigues Alves, 1252, São Paulo 04014-002, SP, Brazil; (D.P.C.); (A.F.d.C.N.)
| | - Ana Márcia de Sá Guimarães
- Laboratory of Applied Research in Mycobacteria, Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508-000, SP, Brazil; (M.C.S.Z.); (A.M.d.S.G.)
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Protein Microarray-Guided Development of a Highly Sensitive and Specific Dipstick Assay for Glanders Serodiagnostics. J Clin Microbiol 2023; 61:e0123422. [PMID: 36541753 PMCID: PMC9879090 DOI: 10.1128/jcm.01234-22] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Burkholderia mallei, the causative agent of glanders, is a clonal descendant of Burkholderia pseudomallei, the causative agent of melioidosis, which has lost its environmental reservoir and has a restricted host range. Despite limitations in terms of sensitivity and specificity, complement fixation is still the official diagnostic test for glanders. Therefore, new tools are needed for diagnostics and to study the B. mallei epidemiology. We recently developed a highly sensitive serodiagnostic microarray test for human melioidosis based on the multiplex detection of B. pseudomallei proteins. In this study, we modified our array tests by using anti-horse IgG conjugate and tested sera from B. mallei-infected horses (n = 30), negative controls (n = 39), and horses infected with other pathogens (n = 14). Our array results show a sensitivity of 96.7% (confidence interval [CI] 85.5 to 99.6%) and a specificity of 100.0% (CI, 95.4 to 100.0%). The reactivity pattern of the positive sera on our array test allowed us to identify a set of 12 highly reactive proteins of interest for glanders diagnosis. The B. mallei variants of the three best protein candidates were selected for the development of a novel dipstick assay. Our point-of-care test detected glanders cases in less than 15 min with a sensitivity of 90.0% (CI, 75.7 to 97.1%) and a specificity of 100.0% (CI, 95.4 to 100.0%). The microarray and dipstick can easily be adopted for the diagnosis of both B. mallei and B. pseudomallei infections in different animals. Future studies will show whether multiplex serological testing has the potential to differentiate between these pathogens.
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Ye L, Ji X, Song Z, Guan L, Zhao L, Wang W, Du W. Clinical Value of Glycan Changes in Cerebrospinal Fluid for Evaluation of Post-Neurosurgical Bacterial Meningitis with Hemorrhagic Stroke Patients. Diagnostics (Basel) 2023; 13:diagnostics13020187. [PMID: 36672998 PMCID: PMC9858593 DOI: 10.3390/diagnostics13020187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 12/26/2022] [Accepted: 12/29/2022] [Indexed: 01/06/2023] Open
Abstract
Post-neurosurgical bacterial meningitis (PNBM) is one of the severe complications in patients receiving neurosurgical procedures. Recent studies have found microbe-related glycans play important roles in adhesion, invasion, and toxicity toward innate immunological reactions. In this study, we aimed to investigate the glycomic profile and its potential diagnostic efficacy in post-neurosurgical bacterial meningitis (PNBM) patients with hemorrhagic stroke. A total of 136 cerebrospinal fluid (CSF) samples were recruited and divided into a PNBM group and a non-PNBM group based on the clinical diagnostic criteria. A lectin biochip-based method was established for the detection of glycans in CSF. The clinicopathological data and biochemical parameters in CSF from all patients were analyzed. Two models for multivariate analysis investigating glycan changes in the CSF were conducted, aiming at determining the specific expression and diagnostic efficacy of lectin-probing glycans (LPGs) for PNBM. In univariate analysis, we found that 8 out of 11 LPGs were significantly correlated with PNBM. Model 1 multivariate analysis revealed that PNA (p = 0.034), Jacalin (p = 0.034) and LTL (p = 0.001) were differentially expressed in the CSF of PNBM patients compared with those of non-PNBM patients. Model 2 multivariate analysis further disclosed that LTL (p = 0.021) and CSF glucose (p < 0.001) had independent diagnostic efficacies in PNBM, with areas under the curve (AUC) of 0.703 and 0.922, respectively. In summary, this study provided a new insight into the subject of CSF glycomics concerning bacterial infection in patients with hemorrhagic stroke.
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Affiliation(s)
- Lei Ye
- Department of Neurosurgery, The First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei 230022, China
- Correspondence: (L.Y.); (W.D.); Tel.: +86-551-6292-2114 (L.Y.); +86-551-6516-1011 (W.D.); Fax: +86-551-6363-3742 (L.Y.); +86-551-6516-5628 (W.D.)
| | - Xuefei Ji
- Department of Neurosurgery, The First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei 230022, China
| | - Zijian Song
- Department of Orthopaedics, Xuzhou Municipal First People’s Hospital, Daxue Road 269, Xuzhou 221116, China
| | - Liao Guan
- Department of Neurosurgery, The First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei 230022, China
| | - Liang Zhao
- Department of Neurosurgery, The First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei 230022, China
| | - Wenwen Wang
- Department of Pathology, Anhui Medical University, Meishan Road 81, Hefei 230032, China
- School of Clinical Medicine, Anhui Medical University, Meishan Road 81, Hefei 230032, China
| | - Weidong Du
- Department of Pathology, Anhui Medical University, Meishan Road 81, Hefei 230032, China
- Correspondence: (L.Y.); (W.D.); Tel.: +86-551-6292-2114 (L.Y.); +86-551-6516-1011 (W.D.); Fax: +86-551-6363-3742 (L.Y.); +86-551-6516-5628 (W.D.)
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P K, M M, S M, Kr P, T D, G W, Ma V, K L. First glanders cases detected in Nepal underscore the need for surveillance and border controls. BMC Vet Res 2022; 18:132. [PMID: 35387664 PMCID: PMC8985341 DOI: 10.1186/s12917-022-03233-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 03/29/2022] [Indexed: 11/25/2022] Open
Abstract
Background Glanders is a transmissible zoonotic disease caused by Burkholderia mallei that infects equids and humans. No glanders cases in equids were reported so far in Nepal. Case presentation Following suspected glanders in animals with clinical signs in different regions in Nepal, serum samples were tested by CFT, ELISA and Luminex® tests. Two horses and a mule tested positive for glanders by all tests, while two other equids only tested positive by ELISA and Luminex®. Analysis of swabs and pus samples by a PCR system targeting B. mallei confirmed the presence of the bacterium in the samples collected from the 3 equids that yielded positive results in all serological tests. Genotyping of the three PCR positive samples with a SNP-based method identified a genotype closely related to the B. mallei strains circulating in India. Conclusion Confirmation of glanders cases underscores the need of implementing a surveillance program in Nepal and a strict control of the animal movement across the borders.
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Affiliation(s)
- Koirala P
- Central Veterinary Laboratory, Kathmandu, Nepal.
| | - Maharjan M
- Central Veterinary Laboratory, Kathmandu, Nepal
| | - Manandhar S
- Central Veterinary Laboratory, Kathmandu, Nepal
| | - Pandey Kr
- Veterinary Laboratory, Surkhet, Nepal
| | - Deshayes T
- ANSES, Laboratory for Animal Health, Bacterial Zoonosis Unit, European and OIE Reference Laboratory for Glanders, Paris-Est University, Maisons-Alfort, France
| | - Wang G
- Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast, UK
| | - Valvano Ma
- Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast, UK
| | - Laroucau K
- ANSES, Laboratory for Animal Health, Bacterial Zoonosis Unit, European and OIE Reference Laboratory for Glanders, Paris-Est University, Maisons-Alfort, France.
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