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Jin Y, Zhou W, Ge Q, Shen P, Xiao Y. Epidemiology and clinical features of Skin and Soft Tissue Infections Caused by PVL-Positive and PVL-Negative Methicillin-Resistant Staphylococcus aureus Isolates in inpatients in China: a single-center retrospective 7-year study. Emerg Microbes Infect 2024; 13:2316809. [PMID: 38323591 PMCID: PMC10883109 DOI: 10.1080/22221751.2024.2316809] [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: 11/12/2023] [Accepted: 02/06/2024] [Indexed: 02/08/2024]
Abstract
Previous studies have mainly focused on outpatient cases of skin and soft tissue infections (SSTIs), with limited attention to inpatient occurrences. Thus, we aimed to compare the clinical parameters of inpatients with SSTIs, performed genomic characterization, and determined the subtypes of Panton-Valentine leucocidin (PVL) bacteriophages of methicillin-resistant Staphylococcus aureus (MRSA) strains isolated from these patients. We found that PVL-positive patients had shorter hospital stays (mean, 9 vs. 24 days; p < 0.001) and abscess resolution durations (mean, 8 vs. 13 days; p < 0.01). PVL-positive MRSA-induced SSTIs were more frequently associated with abscesses [36/55 (65.5%) vs. 15/124 (12.1%), p < 0.001], with 52.7% undergoing incision and drainage; over 80% of PVL-negative patients received incision, drainage, and antibiotics. In PVL-positive patients receiving empirical antibiotics, anti-staphylococcal agents such as vancomycin and linezolid were administered less frequently (32.7%, 18/55) than in PVL-negative patients (74.2%, 92/124), indicating that patients with PVL-positive SSTIs are more likely to require surgical drainage rather than antimicrobial treatment. We also found that the ST59 lineage was predominant, regardless of PVL status (41.3%, 74/179). Additionally, we investigated the linear structure of the lukSF-PV gene, revealing that major clusters were associated with specific STs, suggesting independent acquisition of PVL by different strain types and indicating that significant diversity was observed even within PVL-positive strains detected in the same facility. Overall, our study provides comprehensive insights into the clinical, genetic, and phage-related aspects of MRSA-induced SSTIs in hospitalized patients and contributes to a more profound understanding of the epidemiology and evolution of these pathogens in the Chinese population.
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Affiliation(s)
- Ye Jin
- Department of General Intensive Care Unit, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, People's Republic of China
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, People's Republic of China
- Key Laboratory of Early Warning and Intervention of Multiple Organ Failure, China National Ministry of Education, Hangzhou, Zhejiang, People's Republic of China
| | - Wangxiao Zhou
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, People's Republic of China
| | - Qi Ge
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, People's Republic of China
| | - Ping Shen
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, People's Republic of China
| | - Yonghong Xiao
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, People's Republic of China
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2
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Fu B, Xu J, Yin D, Sun C, Liu D, Zhai W, Bai R, Cao Y, Zhang Q, Ma S, Walsh TR, Hu F, Wang Y, Wu C, Shen J. Transmission of blaNDM in Enterobacteriaceae among animals, food and human. Emerg Microbes Infect 2024; 13:2337678. [PMID: 38629492 PMCID: PMC11034458 DOI: 10.1080/22221751.2024.2337678] [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: 01/24/2024] [Accepted: 03/27/2024] [Indexed: 04/22/2024]
Abstract
Despite carbapenems not being used in animals, carbapenem-resistant Enterobacterales (CRE), particularly New Delhi metallo-β-lactamase-producing CRE (NDM-CRE), are prevalent in livestock. Concurrently, the incidence of human infections caused by NDM-CRE is rising, particularly in children. Although a positive association between livestock production and human NDM-CRE infections at the national level was identified, the evidence of direct transmission of NDM originating from livestock to humans remains largely unknown. Here, we conducted a cross-sectional study in Chengdu, Sichuan Province, to examine the prevalence of NDM-CRE in chickens and pigs along the breeding-slaughtering-retail chains, in pork in cafeterias of schools, and in colonizations and infections from children's hospital and examined the correlation of NDM-CRE among animals, foods and humans. Overall, the blaNDM increases gradually along the chicken and pig breeding (4.70%/2.0%) -slaughtering (7.60%/22.40%) -retail (65.56%/34.26%) chains. The slaughterhouse has become a hotspot for cross-contamination and amplifier of blaNDM. Notably, 63.11% of pork from the school cafeteria was positive for blaNDM. The prevalence of blaNDM in intestinal and infection samples from children's hospitals was 21.68% and 19.80%, respectively. whole genome sequencing (WGS) analysis revealed the sporadic, not large-scale, clonal spread of NDM-CRE along the chicken and pig breeding-slaughtering-retail chain, with further spreading via IncX3-blaNDM plasmid within each stage of whole chains. Clonal transmission of NDM-CRE is predominant in children's hospitals. The IncX3-blaNDM plasmid was highly prevalent among animals and humans and accounted for 57.7% of Escherichia coli and 91.3% of Klebsiella pneumoniae. Attention should be directed towards the IncX3 plasmid to control the transmission of blaNDM between animals and humans.
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Affiliation(s)
- Bo Fu
- National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, People’s Republic of China
| | - Jian Xu
- Chengdu Women’s and Children’s Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, People’s Republic of China
| | - Dandan Yin
- Institute of Antibiotics, Huashan Hospital, Fudan University, Shanghai, People’s Republic of China
- Key Laboratory of Clinical Pharmacology of Antibiotics (MoH), Shanghai, People’s Republic of China
| | - Chengtao Sun
- National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, People’s Republic of China
| | - Dejun Liu
- National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, People’s Republic of China
| | - Weishuai Zhai
- National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, People’s Republic of China
| | - Rina Bai
- National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, People’s Republic of China
| | - Yue Cao
- National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, People’s Republic of China
| | - Qin Zhang
- Chengdu Women’s and Children’s Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, People’s Republic of China
| | - Shizhen Ma
- National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, People’s Republic of China
| | - Timothy R. Walsh
- National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, People’s Republic of China
- Department of Zoology, Ineos-Oxford Institute of Antimicrobial Research, University of Oxford, Oxford, UK
| | - Fupin Hu
- Institute of Antibiotics, Huashan Hospital, Fudan University, Shanghai, People’s Republic of China
- Key Laboratory of Clinical Pharmacology of Antibiotics (MoH), Shanghai, People’s Republic of China
| | - Yang Wang
- National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, People’s Republic of China
| | - Congming Wu
- National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, People’s Republic of China
| | - Jianzhong Shen
- National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, People’s Republic of China
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Wang Y, Hu H, Shi Q, Zhang P, Zhao D, Jiang Y, Yu Y. Prevalence and characteristics of ertapenem-mono-resistant isolates among carbapenem-resistant Enterobacterales in China. Emerg Microbes Infect 2024; 13:2332658. [PMID: 38517707 PMCID: PMC10993752 DOI: 10.1080/22221751.2024.2332658] [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: 01/02/2024] [Accepted: 03/14/2024] [Indexed: 03/24/2024]
Abstract
Carbapenem-resistant Enterobacterales (CRE), specifically those resistant to only ertapenem among carbapenems (ETP-mono-resistant), are increasingly reported, while the optimal therapy options remain uncertain. To investigate the prevalence and characteristics of ETP-mono-resistant CRE, CRE strains were systematically collected from 102 hospitals across China between 2018 and 2021. A 1:1 randomized matching study was conducted with ETP-mono-resistant strains to meropenem- and/or imipenem-resistant (MEM/IPM-resistant) strains. Antimicrobial susceptibility testing, whole-genome sequencing, carbapenem-hydrolysing activity and the expression of carbapenemase genes were determined. In total, 18.8% of CRE strains were ETP-mono-resistant, with relatively low ertapenem MIC values. ETP-mono-resistant strains exhibited enhanced susceptibility to β-lactams, β-lactam/β-lactamase inhibitor combinations, levofloxacin, fosfomycin, amikacin and polymyxin than MEM/IPM-resistant strains (P < 0.05). Phylogenetic analysis revealed high genetic diversity among ETP-mono-resistant strains. Extended-spectrum β-lactamases (ESBLs) and/or AmpC, as well as porin mutations, were identified as potential major mechanisms mediating ETP-mono-resistance, while the presence of carbapenemases was found to be the key factor distinguishing the carbapenem-resistant phenotypes between the two groups (P < 0.001). Compared with the MEM/IPM-resistant group, limited carbapenemase-producing CRE (CP-CRE) strains in the ETP-mono-resistant group showed a significantly lower prevalence of ESBLs and porin mutations, along with reduced expression of carbapenemase. Remarkably, spot assays combined with modified carbapenem inactivation method indicated that ETP-mono-resistant CP-CRE isolates grew at meropenem concentrations eightfold above their corresponding MIC values, accompanied by rapidly enhanced carbapenem-hydrolysing ability. These findings illustrate that ETP-mono-resistant CRE strains are relatively prevalent and that caution should be exercised when using meropenem alone for treatment. The detection of carbapenemase should be prioritized.
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Affiliation(s)
- Yinping Wang
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, People’s Republic of China
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, People’s Republic of China
- Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, People’s Republic of China
| | - Huangdu Hu
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, People’s Republic of China
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, People’s Republic of China
- Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, People’s Republic of China
| | - Qiucheng Shi
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, People’s Republic of China
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, People’s Republic of China
- Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, People’s Republic of China
| | - Ping Zhang
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, People’s Republic of China
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, People’s Republic of China
- Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, People’s Republic of China
| | - Dongdong Zhao
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, People’s Republic of China
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, People’s Republic of China
- Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, People’s Republic of China
| | - Yan Jiang
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, People’s Republic of China
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, People’s Republic of China
- Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, People’s Republic of China
| | - Yunsong Yu
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, People’s Republic of China
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, People’s Republic of China
- Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, People’s Republic of China
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Wang N, Zheng X, Leptihn S, Li Y, Cai H, Zhang P, Wu W, Yu Y, Hua X. Characteristics and phylogenetic distribution of megaplasmids and prediction of a putative chromid in Pseudomonas aeruginosa. Comput Struct Biotechnol J 2024; 23:1418-1428. [PMID: 38616963 PMCID: PMC11015739 DOI: 10.1016/j.csbj.2024.04.002] [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: 10/08/2023] [Revised: 04/01/2024] [Accepted: 04/01/2024] [Indexed: 04/16/2024] Open
Abstract
Research on megaplasmids that contribute to the spread of antimicrobial resistance (AMR) in Pseudomonas aeruginosa strains has grown in recent years due to the now widely used technologies allowing long-read sequencing. Here, we systematically analyzed distinct and consistent genetic characteristics of megaplasmids found in P. aeruginosa. Our data provide information on their phylogenetic distribution and hypotheses tracing the potential evolutionary paths of megaplasmids. Most of the megaplasmids we found belong to the IncP-2-type, with conserved and syntenic genetic backbones carrying modules of genes associated with chemotaxis apparatus, tellurite resistance and plasmid replication, segregation, and transmission. Extensively variable regions harbor abundant AMR genes, especially those encoding β-lactamases such as VIM-2, IMP-45, and KPC variants, which are high-risk elements in nosocomial infection. IncP-2 megaplasmids act as effective vehicles transmitting AMR genes to diverse regions. One evolutionary model of the origin of megaplasmids claims that chromids can develop from megaplasmids. These chromids have been characterized as an intermediate between a megaplasmid and a chromosome, also containing core genes that can be found on the chromosome but not on the megaplasmid. Using in silico prediction, we identified the "PABCH45 unnamed replicon" as a putative chromid in P. aeruginosa, which shows a much higher similarity and closer phylogenetic relationship to chromosomes than to megaplasmids while also encoding plasmid-like partition genes. We propose that such a chromid could facilitate genome expansion, allowing for more rapid adaptations to novel ecological niches or selective conditions, in comparison to megaplasmids.
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Affiliation(s)
- Nanfei Wang
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, China
- Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xuan Zheng
- Department of Nephrology, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Sebastian Leptihn
- HMU Health and Medical University, Am Anger 64/73 – 99084, Erfurt, Germany
- Deutsches Zentrum für Infektionsforschung (DZIF) Translational Phage-Network, Inhoffenstraße 7 – 38124, Braunschweig, Germany
- University of Southern Denmark,Department of Biochemistry and Molecular Biology, Campusvej 55 – 5230, Odense, Denmark
| | - Yue Li
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, China
- Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Heng Cai
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, China
- Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Piaopiao Zhang
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, China
- Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Wenhao Wu
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, China
- Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yunsong Yu
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, China
- Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xiaoting Hua
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, China
- Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
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5
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Ramos B, Cunha MV. Genomic epidemiology of Staphylococcus aureus from the Iberian Peninsula highlights the expansion of livestock associated-CC398 towards wildlife. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 933:173027. [PMID: 38729368 DOI: 10.1016/j.scitotenv.2024.173027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 05/04/2024] [Accepted: 05/04/2024] [Indexed: 05/12/2024]
Abstract
Staphylococcus aureus is a versatile pathobiont, exhibiting a broad host range, including humans, other mammals, and avian species. Host specificity determinants, virulence, and antimicrobial resistance genes are often shared by strains circulating at the animal-human interface. While transmission dynamics studies have shown strain exchange between humans and livestock, knowledge of the source, genetic diversification, and transmission drivers of S. aureus in wildlife lag behind. In this work, we explore a wide array of S. aureus genomes from different sources in the Iberian Peninsula to understand population structure, gene content and niche adaptation at the human-livestock-wildlife nexus. Through Bayesian inference, we address the hypothesis that S. aureus strains in wildlife originate from humanized landscapes, either from contact with humans or through interactions with livestock. Phylogenetic reconstruction applied to whole genome sequence data was completed with a dataset of 450 isolates featuring multiple clones from the 1990-2022 period and a subset of CC398 strains representing the 2008-2022 period. Phylodynamic signatures of S. aureus from the Iberian Peninsula suggest widespread circulation of most clones among humans before jumping to other hosts. The number of transitions of CC398 strains within each host category (human, livestock, wildlife) was high (88.26 %), while the posterior probability of transitions from livestock to wildlife was remarkably high (0.99). Microbial genome-wide association analysis did not evidence genome rearrangements nor biomarkers suggesting S. aureus niche adaptation to wildlife, thus supporting recent spill overs. Altogether, our findings indicate that S. aureus isolates collected in the past years from wildlife most likely represent multiple introduction events from livestock. The clonal origin of CC398 and its potential to disseminate and evolve through different animal host species are highlighted, calling for management practices at the livestock-wildlife axis to improve biosecurity and thus restrict S. aureus transmission and niche expansion along gradients of human influence.
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Affiliation(s)
- Beatriz Ramos
- Centre for Ecology, Evolution and Environmental Changes (cE3c) & CHANGE - Global Change and Sustainability Institute, Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisboa, Portugal; Biosystems and Integrative Sciences Institute (BioISI), Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisboa, Portugal
| | - Mónica V Cunha
- Centre for Ecology, Evolution and Environmental Changes (cE3c) & CHANGE - Global Change and Sustainability Institute, Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisboa, Portugal; Biosystems and Integrative Sciences Institute (BioISI), Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisboa, Portugal.
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Tkalec KI, Hayes AJ, Lim KS, Lewis JM, Davies MR, Scott NE. Glycan-Tailored Glycoproteomic Analysis Reveals Serine is the Sole Residue Subjected to O-Linked Glycosylation in Acinetobacter baumannii. J Proteome Res 2024; 23:2474-2494. [PMID: 38850255 DOI: 10.1021/acs.jproteome.4c00148] [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] [Indexed: 06/10/2024]
Abstract
Protein glycosylation is a ubiquitous process observed across all domains of life. Within the human pathogen Acinetobacter baumannii, O-linked glycosylation is required for virulence; however, the targets and conservation of glycosylation events remain poorly defined. In this work, we expand our understanding of the breadth and site specificity of glycosylation within A. baumannii by demonstrating the value of strain specific glycan electron-transfer/higher-energy collision dissociation (EThcD) triggering for bacterial glycoproteomics. By coupling tailored EThcD-triggering regimes to complementary glycopeptide enrichment approaches, we assessed the observable glycoproteome of three A. baumannii strains (ATCC19606, BAL062, and D1279779). Combining glycopeptide enrichment techniques including ion mobility (FAIMS), metal oxide affinity chromatography (titanium dioxide), and hydrophilic interaction liquid chromatography (ZIC-HILIC), as well as the use of multiple proteases (trypsin, GluC, pepsin, and thermolysis), we expand the known A. baumannii glycoproteome to 33 unique glycoproteins containing 42 glycosylation sites. We demonstrate that serine is the sole residue subjected to glycosylation with the substitution of serine for threonine abolishing glycosylation in model glycoproteins. An A. baumannii pan-genome built from 576 reference genomes identified that serine glycosylation sites are highly conserved. Combined this work expands our knowledge of the conservation and site specificity of A. baumannii O-linked glycosylation.
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Affiliation(s)
- Kristian I Tkalec
- Department of Microbiology and Immunology, University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne 3000, Australia
| | - Andrew J Hayes
- Department of Microbiology and Immunology, University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne 3000, Australia
| | - Kataleen S Lim
- Department of Microbiology and Immunology, University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne 3000, Australia
| | - Jessica M Lewis
- Department of Microbiology and Immunology, University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne 3000, Australia
| | - Mark R Davies
- Department of Microbiology and Immunology, University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne 3000, Australia
| | - Nichollas E Scott
- Department of Microbiology and Immunology, University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne 3000, Australia
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Weimann A, Dinan AM, Ruis C, Bernut A, Pont S, Brown K, Ryan J, Santos L, Ellison L, Ukor E, Pandurangan AP, Krokowski S, Blundell TL, Welch M, Blane B, Judge K, Bousfield R, Brown N, Bryant JM, Kukavica-Ibrulj I, Rampioni G, Leoni L, Harrison PT, Peacock SJ, Thomson NR, Gauthier J, Fothergill JL, Levesque RC, Parkhill J, Floto RA. Evolution and host-specific adaptation of Pseudomonas aeruginosa. Science 2024; 385:eadi0908. [PMID: 38963857 DOI: 10.1126/science.adi0908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 05/02/2024] [Indexed: 07/06/2024]
Abstract
The major human bacterial pathogen Pseudomonas aeruginosa causes multidrug-resistant infections in people with underlying immunodeficiencies or structural lung diseases such as cystic fibrosis (CF). We show that a few environmental isolates, driven by horizontal gene acquisition, have become dominant epidemic clones that have sequentially emerged and spread through global transmission networks over the past 200 years. These clones demonstrate varying intrinsic propensities for infecting CF or non-CF individuals (linked to specific transcriptional changes enabling survival within macrophages); have undergone multiple rounds of convergent, host-specific adaptation; and have eventually lost their ability to transmit between different patient groups. Our findings thus explain the pathogenic evolution of P. aeruginosa and highlight the importance of global surveillance and cross-infection prevention in averting the emergence of future epidemic clones.
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Affiliation(s)
- Aaron Weimann
- Victor Phillip Dahdaleh Heart & Lung Research Institute, University of Cambridge, Cambridge, UK
- University of Cambridge Molecular Immunity Unit, MRC Laboratory of Molecular Biology, Cambridge, UK
- Cambridge Centre for AI in Medicine, University of Cambridge, Cambridge, UK
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - Adam M Dinan
- Victor Phillip Dahdaleh Heart & Lung Research Institute, University of Cambridge, Cambridge, UK
- University of Cambridge Molecular Immunity Unit, MRC Laboratory of Molecular Biology, Cambridge, UK
- Cambridge Centre for AI in Medicine, University of Cambridge, Cambridge, UK
| | - Christopher Ruis
- Victor Phillip Dahdaleh Heart & Lung Research Institute, University of Cambridge, Cambridge, UK
- University of Cambridge Molecular Immunity Unit, MRC Laboratory of Molecular Biology, Cambridge, UK
- Cambridge Centre for AI in Medicine, University of Cambridge, Cambridge, UK
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - Audrey Bernut
- Laboratory of Pathogens and Host Immunity (LPHI), UMR5235, CNRS/Université de Montpellier, Montpellier, France
| | - Stéphane Pont
- Laboratory of Pathogens and Host Immunity (LPHI), UMR5235, CNRS/Université de Montpellier, Montpellier, France
| | - Karen Brown
- Victor Phillip Dahdaleh Heart & Lung Research Institute, University of Cambridge, Cambridge, UK
- University of Cambridge Molecular Immunity Unit, MRC Laboratory of Molecular Biology, Cambridge, UK
- Cambridge Centre for Lung Infection, Royal Papworth Hospital, Cambridge, UK
| | - Judy Ryan
- Victor Phillip Dahdaleh Heart & Lung Research Institute, University of Cambridge, Cambridge, UK
- University of Cambridge Molecular Immunity Unit, MRC Laboratory of Molecular Biology, Cambridge, UK
| | - Lúcia Santos
- Department of Physiology, Bioscience Institute, University College Cork, Cork, Ireland
| | - Louise Ellison
- University of Cambridge Molecular Immunity Unit, MRC Laboratory of Molecular Biology, Cambridge, UK
| | - Emem Ukor
- University of Cambridge Molecular Immunity Unit, MRC Laboratory of Molecular Biology, Cambridge, UK
- Cambridge Centre for Lung Infection, Royal Papworth Hospital, Cambridge, UK
| | - Arun P Pandurangan
- Victor Phillip Dahdaleh Heart & Lung Research Institute, University of Cambridge, Cambridge, UK
- Department of Biochemistry, University of Cambridge, Cambridge, UK
- Department of Medicine, University of Cambridge, Cambridge, UK
| | - Sina Krokowski
- Victor Phillip Dahdaleh Heart & Lung Research Institute, University of Cambridge, Cambridge, UK
- University of Cambridge Molecular Immunity Unit, MRC Laboratory of Molecular Biology, Cambridge, UK
| | - Tom L Blundell
- Victor Phillip Dahdaleh Heart & Lung Research Institute, University of Cambridge, Cambridge, UK
- Department of Biochemistry, University of Cambridge, Cambridge, UK
- Department of Medicine, University of Cambridge, Cambridge, UK
| | - Martin Welch
- Department of Biochemistry, University of Cambridge, Cambridge, UK
| | - Beth Blane
- Department of Medicine, University of Cambridge, Cambridge, UK
| | - Kim Judge
- Wellcome Sanger Institute, Hinxton, UK
| | - Rachel Bousfield
- Department of Medicine, University of Cambridge, Cambridge, UK
- Cambridge University Hospitals Trust, Cambridge, UK
| | | | | | - Irena Kukavica-Ibrulj
- Institut de Biologie Intégrative et des Systèmes (IBIS), Université Laval, Québec City, Québec, Canada
| | - Giordano Rampioni
- Department of Science, University Roma Tre, Rome, Italy
- IRCCS Fondazione Santa Lucia, Rome, Italy
| | - Livia Leoni
- Department of Science, University Roma Tre, Rome, Italy
| | - Patrick T Harrison
- Department of Physiology, Bioscience Institute, University College Cork, Cork, Ireland
| | - Sharon J Peacock
- Department of Medicine, University of Cambridge, Cambridge, UK
- Cambridge University Hospitals Trust, Cambridge, UK
| | - Nicholas R Thomson
- Wellcome Sanger Institute, Hinxton, UK
- London School of Hygiene and Tropical Medicine, London, UK
| | - Jeff Gauthier
- Institut de Biologie Intégrative et des Systèmes (IBIS), Université Laval, Québec City, Québec, Canada
| | - Jo L Fothergill
- Department of Clinical Infection, Microbiology and Immunology, University of Liverpool, Liverpool, UK
| | - Roger C Levesque
- Institut de Biologie Intégrative et des Systèmes (IBIS), Université Laval, Québec City, Québec, Canada
| | - Julian Parkhill
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - R Andres Floto
- Victor Phillip Dahdaleh Heart & Lung Research Institute, University of Cambridge, Cambridge, UK
- University of Cambridge Molecular Immunity Unit, MRC Laboratory of Molecular Biology, Cambridge, UK
- Cambridge Centre for AI in Medicine, University of Cambridge, Cambridge, UK
- Cambridge Centre for Lung Infection, Royal Papworth Hospital, Cambridge, UK
- Department of Medicine, University of Cambridge, Cambridge, UK
- Cambridge University Hospitals Trust, Cambridge, UK
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8
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Osugi A, Tamaru A, Yoshiyama T, Iwamoto T, Mitarai S, Murase Y. Mycobacterium tuberculosis is less likely to acquire pathogenic mutations during latent infection than during active disease. Microbiol Spectr 2024; 12:e0428923. [PMID: 38786200 DOI: 10.1128/spectrum.04289-23] [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: 01/19/2024] [Accepted: 04/28/2024] [Indexed: 05/25/2024] Open
Abstract
Most people infected with Mycobacterium tuberculosis (Mtb) are believed to be in a state of latent tuberculosis (TB) infection (LTBI). Although LTBI is asymptomatic and not infectious, there is a risk of developing active disease even decades after infection. Here, to characterize mutations acquired during LTBI, we collected and analyzed Mtb genomes from seven Japanese patient pairs, each pair consisting of two active TB patients whose starting dates of developing active disease were >3 years apart; one had a high suspicion of LTBI before developing active disease, whereas the other did not. Thereafter, we compared these genomes with those of longitudinal sample pairs within a host of chronic active TB infections combined with public data. The bacterial populations in patients with LTBI were genetically more homogeneous and accumulated single nucleotide polymorphisms (SNPs) slower than those from active disease. Moreover, the lower proportion of nonsynonymous SNPs indicated weaker selective pressures during LTBI than active disease. Finally, the different mutation spectrums indicated different mutators between LTBI and active disease. These results suggest that the likelihood of the acquisition of mutations responsible for antibiotic resistance and increased virulence was lower in the Mtb population from LTBI than active disease.IMPORTANCEControlling latent tuberculosis (TB) infection (LTBI) activation is an effective strategy for TB elimination, where understanding Mycobacterium tuberculosis (Mtb) dynamics within the host plays an important role. Previous studies on chronic active disease reported that Mtb accumulated genomic mutations within the host, possibly resulting in acquired drug resistance and increased virulence. However, several reports suggest that fewer mutations accumulate during LTBI than during the active disease, but the associated risk is largely unknown. Here, we analyzed the genomic dynamics of Mtb within the host during LTBI. Our results statistically suggest that Mtb accumulates mutations during LTBI, but most mutations are under low selective pressures, which induce mutations responsible for drug resistance and virulence. Thus, we propose that LTBI acts as a source for new TB disease rather than as a period for in-host genome evolution.
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Affiliation(s)
- Asami Osugi
- Department of Mycobacterium Reference and Research, Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Kiyose, Tokyo, Japan
| | - Aki Tamaru
- Department of Infectious Diseases, Osaka Prefectural Institute of Public Health, Osaka, Japan
| | - Takashi Yoshiyama
- Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Kiyose, Tokyo, Japan
- Department of Respiratory Medicine, Fukujuji Hospital, Japan Anti-Tuberculosis Association, Kiyose, Tokyo, Japan
| | | | - Satoshi Mitarai
- Department of Mycobacterium Reference and Research, Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Kiyose, Tokyo, Japan
- Basic Mycobacteriology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Yoshiro Murase
- Department of Mycobacterium Reference and Research, Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Kiyose, Tokyo, Japan
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9
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Kim N, Ma J, Kim W, Kim J, Belenky P, Lee I. Genome-resolved metagenomics: a game changer for microbiome medicine. Exp Mol Med 2024:10.1038/s12276-024-01262-7. [PMID: 38945961 DOI: 10.1038/s12276-024-01262-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 03/06/2024] [Accepted: 03/25/2024] [Indexed: 07/02/2024] Open
Abstract
Recent substantial evidence implicating commensal bacteria in human diseases has given rise to a new domain in biomedical research: microbiome medicine. This emerging field aims to understand and leverage the human microbiota and derivative molecules for disease prevention and treatment. Despite the complex and hierarchical organization of this ecosystem, most research over the years has relied on 16S amplicon sequencing, a legacy of bacterial phylogeny and taxonomy. Although advanced sequencing technologies have enabled cost-effective analysis of entire microbiota, translating the relatively short nucleotide information into the functional and taxonomic organization of the microbiome has posed challenges until recently. In the last decade, genome-resolved metagenomics, which aims to reconstruct microbial genomes directly from whole-metagenome sequencing data, has made significant strides and continues to unveil the mysteries of various human-associated microbial communities. There has been a rapid increase in the volume of whole metagenome sequencing data and in the compilation of novel metagenome-assembled genomes and protein sequences in public depositories. This review provides an overview of the capabilities and methods of genome-resolved metagenomics for studying the human microbiome, with a focus on investigating the prokaryotic microbiota of the human gut. Just as decoding the human genome and its variations marked the beginning of the genomic medicine era, unraveling the genomes of commensal microbes and their sequence variations is ushering us into the era of microbiome medicine. Genome-resolved metagenomics stands as a pivotal tool in this transition and can accelerate our journey toward achieving these scientific and medical milestones.
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Affiliation(s)
- Nayeon Kim
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Republic of Korea
| | - Junyeong Ma
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Republic of Korea
| | - Wonjong Kim
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Republic of Korea
| | - Jungyeon Kim
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Republic of Korea
| | - Peter Belenky
- Department of Molecular Microbiology and Immunology, Brown University, Providence, RI, 02912, USA.
| | - Insuk Lee
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Republic of Korea.
- POSTECH Biotech Center, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea.
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10
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Fernandez JE, Egli A, Overesch G, Perreten V. Time-calibrated phylogenetic and chromosomal mobilome analyses of Staphylococcus aureus CC398 reveal geographical and host-related evolution. Nat Commun 2024; 15:5526. [PMID: 38951499 PMCID: PMC11217367 DOI: 10.1038/s41467-024-49644-9] [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: 02/13/2024] [Accepted: 06/13/2024] [Indexed: 07/03/2024] Open
Abstract
An international collection of Staphylococcus aureus of clonal complex (CC) 398 from diverse hosts spanning all continents and a 30 year-period is studied based on whole-genome sequencing (WGS) data. The collection consists of publicly available genomic data from 2994 strains and 134 recently sequenced Swiss methicillin-resistant S. aureus (MRSA) CC398 strains. A time-calibrated phylogeny reveals the presence of distinct phylogroups present in Asia, North and South America and Europe. European MRSA diverged from methicillin-susceptible S. aureus (MSSA) at the beginning of the 1950s. Two major European phylogroups (EP4 and EP5), which diverged approximately 1974, are the main drivers of MRSA CC398 spread in Europe. Within EP5, an emergent MRSA lineage spreading among the European horse population (EP5-Leq) diverged approximately 1996 from the pig lineage (EP5-Lpg), and also contains human-related strains. EP5-Leq is characterized by staphylococcal cassette chromosome mec (SCCmec) IVa and spa type t011 (CC398-IVa-t011), and EP5-Lpg by CC398-SCCmecVc-t011. The lineage-specific antibiotic resistance and virulence gene patterns are mostly mediated by the acquisition of mobile genetic elements like SCCmec, S. aureus Genomic Islands (SaGIs), prophages and transposons. Different combinations of virulence factors are present on S. aureus pathogenicity islands (SaPIs), and novel antimicrobial resistance gene containing elements are associated with certain lineages expanding in Europe. This WGS-based analysis reveals the actual evolutionary trajectory and epidemiological trend of the international MRSA CC398 population considering host, temporal, geographical and molecular factors. It provides a baseline for global WGS-based One-Health studies of adaptive evolution of MRSA CC398 as well as for local outbreak investigations.
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Affiliation(s)
- Javier Eduardo Fernandez
- Division of Molecular Bacterial Epidemiology and Infectious Diseases, Institute of Veterinary Bacteriology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Adrian Egli
- Institute of Medical Microbiology, University of Zurich, Zurich, Switzerland
| | - Gudrun Overesch
- Center for Zoonoses, Animal Bacterial Diseases and Antimicrobial Resistance, Institute of Veterinary Bacteriology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Vincent Perreten
- Division of Molecular Bacterial Epidemiology and Infectious Diseases, Institute of Veterinary Bacteriology, Vetsuisse Faculty, University of Bern, Bern, Switzerland.
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11
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Lamkiewicz K, Barf LM, Sachse K, Hölzer M. RIBAP: a comprehensive bacterial core genome annotation pipeline for pangenome calculation beyond the species level. Genome Biol 2024; 25:170. [PMID: 38951884 PMCID: PMC11218241 DOI: 10.1186/s13059-024-03312-9] [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: 05/10/2023] [Accepted: 06/14/2024] [Indexed: 07/03/2024] Open
Abstract
Microbial pangenome analysis identifies present or absent genes in prokaryotic genomes. However, current tools are limited when analyzing species with higher sequence diversity or higher taxonomic orders such as genera or families. The Roary ILP Bacterial core Annotation Pipeline (RIBAP) uses an integer linear programming approach to refine gene clusters predicted by Roary for identifying core genes. RIBAP successfully handles the complexity and diversity of Chlamydia, Klebsiella, Brucella, and Enterococcus genomes, outperforming other established and recent pangenome tools for identifying all-encompassing core genes at the genus level. RIBAP is a freely available Nextflow pipeline at github.com/hoelzer-lab/ribap and zenodo.org/doi/10.5281/zenodo.10890871.
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Affiliation(s)
- Kevin Lamkiewicz
- RNA Bioinformatics and High-Throughput Analysis, Friedrich Schiller University Jena, Leutragraben 1, Jena, 07743, Germany
| | - Lisa-Marie Barf
- RNA Bioinformatics and High-Throughput Analysis, Friedrich Schiller University Jena, Leutragraben 1, Jena, 07743, Germany
| | - Konrad Sachse
- RNA Bioinformatics and High-Throughput Analysis, Friedrich Schiller University Jena, Leutragraben 1, Jena, 07743, Germany
| | - Martin Hölzer
- Genome Competence Center (MF1), Robert Koch Institute, Berlin, 13353, Germany.
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12
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Bhalla N, Nanda RK. Pangenome-wide association study reveals the selective absence of CRISPR genes (Rv2816c-19c) in drug-resistant Mycobacterium tuberculosis. Microbiol Spectr 2024:e0052724. [PMID: 38916315 DOI: 10.1128/spectrum.00527-24] [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: 02/27/2024] [Accepted: 05/31/2024] [Indexed: 06/26/2024] Open
Abstract
The presence of intermittently dispersed insertion sequences and transposases in the Mycobacterium tuberculosis (Mtb) genome makes intra-genome recombination events inevitable. Understanding their effect on the gene repertoires (GR), which may contribute to the development of drug-resistant Mtb, is critical. In this study, publicly available WGS data of clinical Mtb isolates (endemic region n = 2,601; non-endemic region n = 1,130) were de novo assembled, filtered, scaffolded into assemblies, and functionally annotated. Out of 2,601 Mtb WGS data sets from endemic regions, 2,184 (drug resistant/sensitive: 1,386/798) qualified as high quality. We identified 3,784 core genes, 123 softcore genes, 224 shell genes, and 762 cloud genes in the pangenome of Mtb clinical isolates from endemic regions. Sets of 33 and 39 genes showed positive and negative associations (P < 0.01) with drug resistance status, respectively. Gene ontology clustering showed compromised immunity to phages and impaired DNA repair in drug-resistant Mtb clinical isolates compared to the sensitive ones. Multidrug efflux pump repressor genes (Rv3830c and Rv3855c) and CRISPR genes (Rv2816c-19c) were absent in the drug-resistant Mtb. A separate WGS data analysis of drug-resistant Mtb clinical isolates from the Netherlands (n = 1130) also showed the absence of CRISPR genes (Rv2816c-17c). This study highlights the role of CRISPR genes in drug resistance development in Mtb clinical isolates and helps in understanding its evolutionary trajectory and as useful targets for diagnostics development.IMPORTANCEThe results from the present Pan-GWAS study comparing gene sets in drug-resistant and drug-sensitive Mtb clinical isolates revealed intricate presence-absence patterns of genes encoding DNA-binding proteins having gene regulatory as well as DNA modification and DNA repair roles. Apart from the genes with known functions, some uncharacterized and hypothetical genes that seem to have a potential role in drug resistance development in Mtb were identified. We have been able to extrapolate many findings of the present study with the existing literature on the molecular aspects of drug-resistant Mtb, further strengthening the relevance of the results presented in this study.
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Affiliation(s)
- Nikhil Bhalla
- Translational Health Group, International Center of Genetic Engineering and Biotechnology, New Delhi, India
| | - Ranjan Kumar Nanda
- Translational Health Group, International Center of Genetic Engineering and Biotechnology, New Delhi, India
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13
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Lypaczewski P, Chac D, Dunmire CN, Tandoc KM, Chowdhury F, Khan AI, Bhuiyan TR, Harris JB, LaRocque RC, Calderwood SB, Ryan ET, Qadri F, Shapiro BJ, Weil AA. Vibrio cholerae O1 experiences mild bottlenecks through the gastrointestinal tract in some but not all cholera patients. Microbiol Spectr 2024:e0078524. [PMID: 38916318 DOI: 10.1128/spectrum.00785-24] [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: 04/04/2024] [Accepted: 05/13/2024] [Indexed: 06/26/2024] Open
Abstract
Vibrio cholerae O1 causes the diarrheal disease cholera, and the small intestine is the site of active infection. During cholera, cholera toxin is secreted from V. cholerae and induces a massive fluid influx into the small intestine, which causes vomiting and diarrhea. Typically, V. cholerae genomes are sequenced from bacteria passed in stool, but rarely from vomit, a fluid that may more closely represents the site of active infection. We hypothesized that V. cholerae O1 population bottlenecks along the gastrointestinal tract would result in reduced genetic variation in stool compared to vomit. To test this, we sequenced V. cholerae genomes from 10 cholera patients with paired vomit and stool samples. Genetic diversity was low in both vomit and stool, consistent with a single infecting population rather than coinfection with divergent V. cholerae O1 lineages. The amount of single-nucleotide variation decreased from vomit to stool in four patients, increased in two, and remained unchanged in four. The variation in gene presence/absence decreased between vomit and stool in eight patients and increased in two. Pangenome analysis of assembled short-read sequencing demonstrated that the toxin-coregulated pilus operon more frequently contained deletions in genomes from vomit compared to stool. However, these deletions were not detected by PCR or long-read sequencing, indicating that interpreting gene presence or absence patterns from short-read data alone may be incomplete. Overall, we found that V. cholerae O1 isolated from stool is genetically similar to V. cholerae recovered from the upper intestinal tract. IMPORTANCE Vibrio cholerae O1, the bacterium that causes cholera, is ingested in contaminated food or water and then colonizes the upper small intestine and is excreted in stool. Shed V. cholerae genomes from stool are usually studied, but V. cholerae isolated from vomit may be more representative of where V. cholerae colonizes in the upper intestinal epithelium. V. cholerae may experience bottlenecks, or large reductions in bacterial population sizes and genetic diversity, as it passes through the gut. Passage through the gut may select for distinct V. cholerae mutants that are adapted for survival and gut colonization. We did not find strong evidence for such adaptive mutations, and instead observed that passage through the gut results in modest reductions in V. cholerae genetic diversity, and only in some patients. These results fill a gap in our understanding of the V. cholerae life cycle, transmission, and evolution.
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Affiliation(s)
- Patrick Lypaczewski
- Department of Microbiology and Immunology, McGill University, Montreal, Quebec, Canada
| | - Denise Chac
- Department of Medicine, University of Washington, Seattle, Washington, USA
| | - Chelsea N Dunmire
- Department of Medicine, University of Washington, Seattle, Washington, USA
| | - Kristine M Tandoc
- Department of Medicine, University of Washington, Seattle, Washington, USA
| | - Fahima Chowdhury
- Infectious Diseases Division, International Center for Diarrheal Disease Research, Bangladesh, Dhaka
| | - Ashraful I Khan
- Infectious Diseases Division, International Center for Diarrheal Disease Research, Bangladesh, Dhaka
| | - Taufiqur R Bhuiyan
- Infectious Diseases Division, International Center for Diarrheal Disease Research, Bangladesh, Dhaka
| | - Jason B Harris
- Department of Pediatrics, Massachusetts General Hospital, Boston, Massachusetts, USA
- Division of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts, USA
- Division of Global Health, Massachusetts General Hospital for Children, Boston, Massachusetts, USA
| | - Regina C LaRocque
- Division of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
| | - Stephen B Calderwood
- Division of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
| | - Edward T Ryan
- Division of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
- Department of Immunology and Infectious Diseases, Harvard School of Public Health, Boston, Massachusetts, USA
| | - Firdausi Qadri
- Infectious Diseases Division, International Center for Diarrheal Disease Research, Bangladesh, Dhaka
| | - B Jesse Shapiro
- Department of Microbiology and Immunology, McGill University, Montreal, Quebec, Canada
| | - Ana A Weil
- Department of Medicine, University of Washington, Seattle, Washington, USA
- Department of Global Health, University of Washington, Seattle, Washington, USA
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14
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Heng H, Yang L, Zheng Z, Yang C, Yang X, Zhao W, Sun R, Chen K, Ye L, Li J, Chan EWC, Chen S. Characterization of Acinetobacter baumannii at a tertiary hospital in Guangzhou: a genomic and clinical study. Microbes Infect 2024:105380. [PMID: 38909679 DOI: 10.1016/j.micinf.2024.105380] [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: 04/02/2024] [Revised: 06/13/2024] [Accepted: 06/14/2024] [Indexed: 06/25/2024]
Abstract
Acinetobacter baumannii (AB) infections have become a global public health concern due to the continued increase in the incidence of infection and the rate of resistance to carbapenems. This study aimed to investigate the genomic features of AB strains recovered from a tertiary hospital and assess the clinical implications of the findings. A total of 217 AB strains were collected between 2016 and 2018 at a tertiary hospital in Guangzhou, with 183 (84.33%) being carbapenem-resistant AB (CRAB), with the main mechanism being the carriage of the blaOXA-23 gene. The overall mortality rate of patients caused by such strains was 15.21% (n = 33). Artificial lung ventilation and the use of meropenem were mortality risk factors in AB-infected patients, while KL2 AB infection was negatively associated. Core genome multilocus sequence typing and clustering analysis were performed on the integrated AB genome collection from the NCBI database and this study to illustrate the population structure among China. The results revealed diverse core genome profiles (n = 17) among AB strains from China, and strains from this single hospital exhibited most of the core genome profiles (n = 13), suggesting genetic variability within the hospital and transmission across the country. These findings show that the high transmission potential of the CRAB strains and meropenem usage that confers a selective advantage of CRAB clinically are two major factors that pose significant challenges to the effective clinical management of AB infections. Understanding the genetic features and transmission patterns of clinical AB strains is crucial for the effective control of infections caused by this pathogen.
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Affiliation(s)
- Heng Heng
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong SAR, China; State Key Lab of Chemical Biology and Drug Discovery and the Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, China; Shenzhen Key Laboratory of Food Biological Safety Control, The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
| | - Ling Yang
- Department of Laboratory Medicine, First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Zhiwei Zheng
- State Key Lab of Chemical Biology and Drug Discovery and the Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, China; Shenzhen Key Laboratory of Food Biological Safety Control, The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
| | - Chen Yang
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong SAR, China; State Key Lab of Chemical Biology and Drug Discovery and the Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, China
| | - Xuemei Yang
- State Key Lab of Chemical Biology and Drug Discovery and the Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, China; Shenzhen Key Laboratory of Food Biological Safety Control, The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
| | - Wenxing Zhao
- State Key Lab of Chemical Biology and Drug Discovery and the Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, China; Shenzhen Key Laboratory of Food Biological Safety Control, The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
| | - Ruanyang Sun
- State Key Lab of Chemical Biology and Drug Discovery and the Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, China; Shenzhen Key Laboratory of Food Biological Safety Control, The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
| | - Kaichao Chen
- State Key Lab of Chemical Biology and Drug Discovery and the Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, China; Shenzhen Key Laboratory of Food Biological Safety Control, The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
| | - Lianwei Ye
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong SAR, China; State Key Lab of Chemical Biology and Drug Discovery and the Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, China; Shenzhen Key Laboratory of Food Biological Safety Control, The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
| | - Jun Li
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong SAR, China
| | - Edward Wai-Chi Chan
- State Key Lab of Chemical Biology and Drug Discovery and the Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, China
| | - Sheng Chen
- State Key Lab of Chemical Biology and Drug Discovery and the Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, China; Shenzhen Key Laboratory of Food Biological Safety Control, The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China.
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15
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Oles RE, Terrazas MC, Loomis LR, Neal MJ, Paulchakrabarti M, Zuffa S, Hsu CY, Vasquez Ayala A, Lee MH, Tribelhorn C, Belda-Ferre P, Bryant M, Zemlin J, Young J, Dulai P, Sandborn WJ, Sivagnanam M, Raffatellu M, Pride D, Dorrestein PC, Zengler K, Choudhury B, Knight R, Chu H. Pathogenic Bacteroides fragilis strains can emerge from gut-resident commensals. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.19.599758. [PMID: 38948766 PMCID: PMC11213024 DOI: 10.1101/2024.06.19.599758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/02/2024]
Abstract
Bacteroides fragilis is a prominent member of the human gut microbiota, playing crucial roles in maintaining gut homeostasis and host health. Although it primarily functions as a beneficial commensal, B. fragilis can become pathogenic. To determine the genetic basis of its duality, we conducted a comparative genomic analysis of 813 B. fragilis strains, representing both commensal and pathogenic origins. Our findings reveal that pathogenic strains emerge across diverse phylogenetic lineages, due in part to rapid gene exchange and the adaptability of the accessory genome. We identified 16 phylogenetic groups, differentiated by genes associated with capsule composition, interspecies competition, and host interactions. A microbial genome-wide association study identified 44 genes linked to extra-intestinal survival and pathogenicity. These findings reveal how genomic diversity within commensal species can lead to the emergence of pathogenic traits, broadening our understanding of microbial evolution in the gut.
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Affiliation(s)
- Renee E. Oles
- Department of Pathology, University of California, San Diego, La Jolla, CA
- Division of Host-Microbe Systems and Therapeutics, Department of Pediatrics, University of California, San Diego, La Jolla, CA
| | | | - Luke R. Loomis
- Department of Pathology, University of California, San Diego, La Jolla, CA
| | - Maxwell J. Neal
- Department of Bioengineering, University of California, San Diego, La Jolla, CA
| | | | - Simone Zuffa
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, CA
| | - Chia-Yun Hsu
- Department of Pathology, University of California, San Diego, La Jolla, CA
| | | | - Michael H. Lee
- Division of Host-Microbe Systems and Therapeutics, Department of Pediatrics, University of California, San Diego, La Jolla, CA
| | - Caitlin Tribelhorn
- Division of Host-Microbe Systems and Therapeutics, Department of Pediatrics, University of California, San Diego, La Jolla, CA
| | - Pedro Belda-Ferre
- Division of Host-Microbe Systems and Therapeutics, Department of Pediatrics, University of California, San Diego, La Jolla, CA
| | - MacKenzie Bryant
- Division of Host-Microbe Systems and Therapeutics, Department of Pediatrics, University of California, San Diego, La Jolla, CA
| | - Jasmine Zemlin
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, CA
| | - Jocelyn Young
- Division of Gastroenterology, Hepatology and Nutrition, University of California, San Diego and Rady Children’s Hospital, San Diego, CA
| | - Parambir Dulai
- Division of Gastroenterology, University of California, San Diego, La Jolla, CA
- Division of Gastroenterology, Northwestern University, Chicago, Illinois
| | - William J. Sandborn
- Division of Gastroenterology, University of California, San Diego, La Jolla, CA
- Center for Microbiome Innovation, University of California, San Diego, La Jolla, CA
| | - Mamata Sivagnanam
- Division of Gastroenterology, Hepatology and Nutrition, University of California, San Diego and Rady Children’s Hospital, San Diego, CA
| | - Manuela Raffatellu
- Division of Host-Microbe Systems and Therapeutics, Department of Pediatrics, University of California, San Diego, La Jolla, CA
- Center for Microbiome Innovation, University of California, San Diego, La Jolla, CA
- Chiba University-UC San Diego Center for Mucosal Immunology, Allergy and Vaccines (cMAV), University of California, San Diego, La Jolla, CA
| | - David Pride
- Department of Pathology, University of California, San Diego, La Jolla, CA
- Center for Microbiome Innovation, University of California, San Diego, La Jolla, CA
- Center for Innovative Phage Applications and Therapeutics (IPATH), University of California, San Diego, La Jolla, CA
- Center of Advanced Laboratory Medicine (CALM), University of California, San Diego, La Jolla, CA
| | - Pieter C. Dorrestein
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, CA
| | - Karsten Zengler
- Division of Host-Microbe Systems and Therapeutics, Department of Pediatrics, University of California, San Diego, La Jolla, CA
- Department of Bioengineering, University of California, San Diego, La Jolla, CA
- Center for Microbiome Innovation, University of California, San Diego, La Jolla, CA
- Program in Materials Science and Engineering, University of California, San Diego, La Jolla, CA
| | - Biswa Choudhury
- GlycoAnalytics Core, University of California San Diego, San Diego, CA
| | - Rob Knight
- Division of Host-Microbe Systems and Therapeutics, Department of Pediatrics, University of California, San Diego, La Jolla, CA
- Center for Microbiome Innovation, University of California, San Diego, La Jolla, CA
- Shu Chien-Gene Lay Department of Bioengineering, University of California San Diego, La Jolla, CA
- Department of Computer Science & Engineering, University of California, San Diego, La Jolla, CA
- Halıcıoğlu Data Science Institute, University of California, San Diego, La Jolla, CA
| | - Hiutung Chu
- Department of Pathology, University of California, San Diego, La Jolla, CA
- Center for Microbiome Innovation, University of California, San Diego, La Jolla, CA
- Chiba University-UC San Diego Center for Mucosal Immunology, Allergy and Vaccines (cMAV), University of California, San Diego, La Jolla, CA
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16
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Unemo M, Sánchez-Busó L, Golparian D, Jacobsson S, Shimuta K, Lan PT, Eyre DW, Cole M, Maatouk I, Wi T, Lahra MM. The novel 2024 WHO Neisseria gonorrhoeae reference strains for global quality assurance of laboratory investigations and superseded WHO N. gonorrhoeae reference strains-phenotypic, genetic and reference genome characterization. J Antimicrob Chemother 2024:dkae176. [PMID: 38889110 DOI: 10.1093/jac/dkae176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Accepted: 05/15/2024] [Indexed: 06/20/2024] Open
Abstract
OBJECTIVES MDR and XDR Neisseria gonorrhoeae strains remain major public health concerns internationally, and quality-assured global gonococcal antimicrobial resistance (AMR) surveillance is imperative. The WHO global Gonococcal Antimicrobial Surveillance Programme (GASP) and WHO Enhanced GASP (EGASP), including metadata and WGS, are expanding internationally. We present the phenotypic, genetic and reference genome characteristics of the 2024 WHO gonococcal reference strains (n = 15) for quality assurance worldwide. All superseded WHO gonococcal reference strains (n = 14) were identically characterized. MATERIAL AND METHODS The 2024 WHO reference strains include 11 of the 2016 WHO reference strains, which were further characterized, and four novel strains. The superseded WHO reference strains include 11 WHO reference strains previously unpublished. All strains were characterized phenotypically and genomically (single-molecule PacBio or Oxford Nanopore and Illumina sequencing). RESULTS The 2024 WHO reference strains represent all available susceptible and resistant phenotypes and genotypes for antimicrobials currently and previously used (n = 22), or considered for future use (n = 3) in gonorrhoea treatment. The novel WHO strains include internationally spreading ceftriaxone resistance, ceftriaxone resistance due to new penA mutations, ceftriaxone plus high-level azithromycin resistance and azithromycin resistance due to mosaic MtrRCDE efflux pump. AMR, serogroup, prolyliminopeptidase, genetic AMR determinants, plasmid types, molecular epidemiological types and reference genome characteristics are presented for all strains. CONCLUSIONS The 2024 WHO gonococcal reference strains are recommended for internal and external quality assurance in laboratory examinations, especially in the WHO GASP, EGASP and other GASPs, but also in phenotypic and molecular diagnostics, AMR prediction, pharmacodynamics, epidemiology, research and as complete reference genomes in WGS analysis.
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Affiliation(s)
- Magnus Unemo
- Department of Laboratory Medicine, Faculty of Medicine and Health, WHO Collaborating Centre for Gonorrhoea and Other STIs, National Reference Laboratory for STIs, Microbiology, Örebro University, Örebro, Sweden
- Institute for Global Health, University College London (UCL), London, UK
| | - Leonor Sánchez-Busó
- Joint Research Unit 'Infection and Public Health', FISABIO-University of Valencia, Institute for Integrative Systems Biology (I2SysBio), Valencia, Spain
- CIBERESP, ISCIII, Madrid, Spain
| | - Daniel Golparian
- Department of Laboratory Medicine, Faculty of Medicine and Health, WHO Collaborating Centre for Gonorrhoea and Other STIs, National Reference Laboratory for STIs, Microbiology, Örebro University, Örebro, Sweden
| | - Susanne Jacobsson
- Department of Laboratory Medicine, Faculty of Medicine and Health, WHO Collaborating Centre for Gonorrhoea and Other STIs, National Reference Laboratory for STIs, Microbiology, Örebro University, Örebro, Sweden
| | - Ken Shimuta
- Department of Bacteriology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Pham Thi Lan
- Hanoi Medical University, National Hospital of Dermatology and Venereology, Hanoi, Vietnam
| | - David W Eyre
- Big Data Institute, University of Oxford, Oxford, UK
- Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | | | - Ismael Maatouk
- Department of the Global HIV, Hepatitis and STI Programmes, WHO, Geneva, Switzerland
| | - Teodora Wi
- Department of the Global HIV, Hepatitis and STI Programmes, WHO, Geneva, Switzerland
| | - Monica M Lahra
- WHO Collaborating Centre for Sexually Transmitted Infections and Antimicrobial Resistance, New South Wales Health Pathology, Microbiology, Randwick, NSW, Australia
- Faculty of Medicine, The University of New South Wales, Sydney, Australia
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17
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Sidorczuk K, Burdukiewicz M, Cerk K, Fritscher J, Kingsley RA, Schierack P, Hildebrand F, Kolenda R. adhesiomeR: a tool for Escherichia coli adhesin classification and analysis. BMC Genomics 2024; 25:609. [PMID: 38886681 PMCID: PMC11184843 DOI: 10.1186/s12864-024-10525-6] [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: 03/10/2024] [Accepted: 06/14/2024] [Indexed: 06/20/2024] Open
Abstract
Adhesins are crucial factors in the virulence of bacterial pathogens such as Escherichia coli. However, to date no resources have been dedicated to the detailed analysis of E. coli adhesins. Here, we provide adhesiomeR software that enables characterization of the complete adhesin repertoire, termed the adhesiome. AdhesiomeR incorporates the most comprehensive database of E. coli adhesins and facilitates an extensive analysis of adhesiome. We demonstrate that adhesiomeR achieves 98% accuracy when compared with experimental analyses. Based on analysis of 15,000 E. coli genomes, we define novel adhesiome profiles and clusters, providing a nomenclature for a unified comparison of E. coli adhesiomes.
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Affiliation(s)
- Katarzyna Sidorczuk
- Quadram Institute Bioscience, Norwich Research Park, Norwich, UK
- Earlham Institute, Norwich Research Park, Norwich, UK
- Department of Bioinformatics and Genomics, Faculty of Biotechnology, University of Wrocław, Wrocław, Poland
- Institute for Biotechnology, Brandenburg University of Technology (BTU) Cottbus-Senftenberg, Senftenberg, Germany
| | - Michał Burdukiewicz
- Clinical Research Centre, Medical University of Białystok, Białystok, Poland
- Institute of Biotechnology and Biomedicine, Autonomous University of Barcelona, Cerdanyola del Vallès, Spain
| | - Klara Cerk
- Quadram Institute Bioscience, Norwich Research Park, Norwich, UK
- Earlham Institute, Norwich Research Park, Norwich, UK
| | - Joachim Fritscher
- Quadram Institute Bioscience, Norwich Research Park, Norwich, UK
- Earlham Institute, Norwich Research Park, Norwich, UK
| | - Robert A Kingsley
- Quadram Institute Bioscience, Norwich Research Park, Norwich, UK
- Depertment of Biological Sciences, University of East Anglia, Norwich, UK
| | - Peter Schierack
- Institute for Biotechnology, Brandenburg University of Technology (BTU) Cottbus-Senftenberg, Senftenberg, Germany
| | - Falk Hildebrand
- Quadram Institute Bioscience, Norwich Research Park, Norwich, UK.
- Earlham Institute, Norwich Research Park, Norwich, UK.
| | - Rafał Kolenda
- Quadram Institute Bioscience, Norwich Research Park, Norwich, UK.
- Department of Biochemistry and Molecular Biology, Faculty of Veterinary Medicine, Wrocław University of Environmental and Life Sciences, Wrocław, Poland.
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18
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Baker AW, Nick SE, Jia F, Graves AM, Warren BG, Zavala S, Stout JE, Lee MJ, Alexander BD, Davidson RM, Anderson DJ. Mycobacterium immunogenum acquisition from hospital tap water: a genomic and epidemiologic analysis. J Clin Microbiol 2024; 62:e0014924. [PMID: 38690881 DOI: 10.1128/jcm.00149-24] [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: 01/26/2024] [Accepted: 04/06/2024] [Indexed: 05/03/2024] Open
Abstract
We identified 23 cases of Mycobacterium immunogenum respiratory acquisition linked to a colonized plumbing system at a new hospital addition. We conducted a genomic and epidemiologic investigation to assess for clonal acquisition of M. immunogenum from hospital water sources and improve understanding of genetic distances between M. immunogenum isolates. We performed whole-genome sequencing on 28 M. immunogenum isolates obtained from August 2013 to July 2021 from patients and water sources on four intensive care and intermediate units at an academic hospital. Study hospital isolates were recovered from 23 patients who experienced de novo respiratory isolation of M. immunogenum and from biofilms obtained from five tap water outlets. We also analyzed 10 M. immunogenum genomes from previously sequenced clinical (n = 7) and environmental (n = 3) external control isolates. The 38-isolate cohort clustered into three clades with pairwise single-nucleotide polymorphism (SNP) distances ranging from 0 to 106,697 SNPs. We identified two clusters of study hospital isolates in Clade 1 and one cluster in Clade 2 for which clinical and environmental isolates differed by fewer than 10 SNPs and had less than 0.5% accessory genome variation. A less restrictive combined threshold of 40 SNPs and 5% accessory genes reliably captured additional isolates that met clinical criteria for hospital acquisition, but 12 (4%) of 310 epidemiologically unrelated isolate pairs also met this threshold. Core and accessory genome analyses confirmed respiratory acquisition of multiple clones of M. immunogenum from hospital water sources to patients. When combined with epidemiologic investigation, genomic thresholds accurately distinguished hospital acquisition.
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Affiliation(s)
- Arthur W Baker
- Division of Infectious Diseases, Duke University School of Medicine, Durham, North Carolina, USA
- Duke Center for Antimicrobial Stewardship and Infection Prevention, Durham, North Carolina, USA
| | - Sophie E Nick
- Duke University School of Medicine, Durham, North Carolina, USA
| | - Fan Jia
- Center for Genes, Environment and Health, National Jewish Health, Denver, Colorado, USA
| | - Amanda M Graves
- Division of Infectious Diseases, Duke University School of Medicine, Durham, North Carolina, USA
- Duke Center for Antimicrobial Stewardship and Infection Prevention, Durham, North Carolina, USA
| | - Bobby G Warren
- Division of Infectious Diseases, Duke University School of Medicine, Durham, North Carolina, USA
- Duke Center for Antimicrobial Stewardship and Infection Prevention, Durham, North Carolina, USA
| | - Sofia Zavala
- Division of Infectious Diseases, Duke University School of Medicine, Durham, North Carolina, USA
| | - Jason E Stout
- Division of Infectious Diseases, Duke University School of Medicine, Durham, North Carolina, USA
| | - Mark J Lee
- Department of Pathology and Clinical Microbiology Laboratory, Duke University School of Medicine, Durham, North Carolina, USA
| | - Barbara D Alexander
- Division of Infectious Diseases, Duke University School of Medicine, Durham, North Carolina, USA
- Department of Pathology and Clinical Microbiology Laboratory, Duke University School of Medicine, Durham, North Carolina, USA
| | - Rebecca M Davidson
- Center for Genes, Environment and Health, National Jewish Health, Denver, Colorado, USA
| | - Deverick J Anderson
- Division of Infectious Diseases, Duke University School of Medicine, Durham, North Carolina, USA
- Duke Center for Antimicrobial Stewardship and Infection Prevention, Durham, North Carolina, USA
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19
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Sahni RD, V A, Suji T, V AS, Jayanth ST. Complete genome sequence of Yokenella regensburgei isolated from a patient with urinary tract infection in India. Microbiol Resour Announc 2024; 13:e0116223. [PMID: 38682779 DOI: 10.1128/mra.01162-23] [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: 12/04/2023] [Accepted: 04/14/2024] [Indexed: 05/01/2024] Open
Abstract
Yokenella regensburgei, an environmental organism, is an emerging pathogen in patients chiefly with immune suppression. We report the draft genome of Y. regensburgei, strain UU2206353, isolated from the urinary tract of an immunocompetent individual. The assembled genome consisted of 4,669,536 bp distributed over 20 contigs with 4,283 protein-coding genes.
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Affiliation(s)
- Rani Diana Sahni
- Department of Clinical Microbiology, Christian Medical College, Vellore, Tamil Nadu, India
| | - Aravind V
- Department of Clinical Microbiology, Christian Medical College, Vellore, Tamil Nadu, India
| | - Thangamani Suji
- Department of Clinical Microbiology, Christian Medical College, Vellore, Tamil Nadu, India
| | - Annie Sheeba V
- Department of Clinical Microbiology, Christian Medical College, Vellore, Tamil Nadu, India
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20
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Hong Y, Chen Y, Zhang J, Zhang H, Wang Z, Zhao F, Sun L, Chen M, Zhu F, Zhuang H, Jiang S, Yu Y, Chen Y. Identification of the novel fosfomycin resistance gene fosSC in Staphylococcus capitis. Int J Antimicrob Agents 2024; 63:107162. [PMID: 38561093 DOI: 10.1016/j.ijantimicag.2024.107162] [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: 01/02/2024] [Revised: 03/20/2024] [Accepted: 03/23/2024] [Indexed: 04/04/2024]
Abstract
OBJECTIVES Fosfomycin has regained attention for treating infections caused by methicillin-resistant Staphylococcus aureus and multidrug-resistant coagulase-negative staphylococci. In this research, our objective was to investigate the mechanisms underlying fosfomycin resistance in Staphylococcus capitis. METHODS The minimum inhibitory concentrations (MICs) of fosfomycin were assessed in 109 clinical S. capitis isolates by the agar dilution method. By cloning the fos-like genes into the shuttle vector, pTSSCm-Pcap, and observing the change in fosfomycin MICs, the gene function was verified. Core genome multilocus sequence typing and comparative genomics analysis were conducted to determine the population characteristics of S. capitis isolates and analyse the genetic environment of the fos-like genes. RESULTS We identified a novel fosfomycin resistance gene, fosSC, on the chromosome in 58 out of 109 (53.2%) S. capitis isolates. The deduced products of the fosSC genes shared 67.15-67.88% amino acid sequence identity with FosB. The RN-pT-fosSC transformants carrying fosSC showed a 512-fold increase in the fosfomycin MICs. The fosSC gene was embedded in a conserved genetic context, but IS431mec was located to the left of the fosSC gene in cluster L due to the insertion of staphylococcal cassette chromosome mec. CONCLUSIONS The chromosomal fosSC genes in some lineages of S. capitis explained their high-level fosfomycin resistance. Ongoing surveillance is crucial for monitoring the potential threat of horizontal transfer, which could be facilitated by the presence of mobile genetic elements surrounding the fosSC gene.
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Affiliation(s)
- Yueqin Hong
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, China; Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yiyi Chen
- Center for General Practice Medicine, Department of Infectious Diseases, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Junxiong Zhang
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, China; Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Xihu District Center for Disease Control and Prevention of Hangzhou, Hangzhou, China
| | - Hao Zhang
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, China; Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Zhengan Wang
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, China; Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Feng Zhao
- Department of Clinical Laboratory, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, China; Key Laboratory of Precision Medicine in Diagnosis and Monitoring Research of Zhejiang Province, Hangzhou, Zhejiang Province, China
| | - Lu Sun
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, China; Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Mengzhen Chen
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, China; Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Feiteng Zhu
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, China; Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Hemu Zhuang
- Department of Respiratory Medicine, Sir Run Run Shaw Hospital and Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Shengnan Jiang
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, China; Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yunsong Yu
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, China; Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China.
| | - Yan Chen
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, China; Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China.
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21
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Lerminiaux N, Mitchell R, Katz K, Fakharuddin K, McGill E, Mataseje L. Plasmid genomic epidemiology of carbapenem-hydrolysing class D β-lactamase (CDHL)-producing Enterobacterales in Canada, 2010-2021. Microb Genom 2024; 10. [PMID: 38896471 DOI: 10.1099/mgen.0.001257] [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] [Indexed: 06/21/2024] Open
Abstract
Carbapenems are last-resort antibiotics for treatment of infections caused by multidrug-resistant Enterobacterales, but carbapenem resistance is a rising global threat due to the acquisition of carbapenemase genes. Oxacillinase-48 (bla OXA-48)-type carbapenemases are increasing in abundance in Canada and elsewhere; these genes are frequently found on mobile genetic elements and are associated with specific transposons. This means that alongside clonal dissemination, bla OXA-48-type genes can spread through plasmid-mediated horizontal gene transfer. We applied whole genome sequencing to characterize 249 bla OXA-48-type-producing Enterobacterales isolates collected by the Canadian Nosocomial Infection Surveillance Program from 2010 to 2021. Using a combination of short- and long-read sequencing, we obtained 70 complete and circular bla OXA-48-type-encoding plasmids. Using MOB-suite, four major plasmids clustered were identified, and we further estimated a plasmid cluster for 91.9 % (147/160) of incomplete bla OXA-48-type-encoding contigs. We identified different patterns of carbapenemase mobilization across Canada, including horizontal transmission of bla OXA-181/IncX3 plasmids (75/249, 30.1 %) and bla OXA-48/IncL/M plasmids (47/249, 18.9 %), and both horizontal transmission and clonal transmission of bla OXA-232 for Klebsiella pneumoniae ST231 on ColE2-type/ColKP3 plasmids (25/249, 10.0 %). Our findings highlight the diversity of OXA-48-type plasmids and indicate that multiple plasmid clusters and clonal transmission have contributed to bla OXA-48-type spread and persistence in Canada.
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Affiliation(s)
- Nicole Lerminiaux
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Manitoba, Canada
| | | | - Kevin Katz
- North York General Hospital, Toronto, Ontario, Canada
| | - Ken Fakharuddin
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Manitoba, Canada
| | - Erin McGill
- Public Health Agency of Canada, Ottawa, Ontario, Canada
| | - Laura Mataseje
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Manitoba, Canada
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22
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Katayama Y, Morita M, Chang B, Katagiri D, Ishikane M, Yamada G, Mezaki K, Kurokawa M, Takano H, Akeda Y. Identification and characterization of a novel α-haemolytic streptococci, Streptococcus parapneumoniae sp. nov., which caused bacteremia with pyelonephritis. Int J Med Microbiol 2024; 315:151625. [PMID: 38824713 DOI: 10.1016/j.ijmm.2024.151625] [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: 01/30/2024] [Revised: 05/23/2024] [Accepted: 05/23/2024] [Indexed: 06/04/2024] Open
Abstract
OBJECTIVES We report a case of bacteremia with pyelonephritis in an adult male with an underlying disease caused by α-hemolytic streptococci. α-Hemolytic streptococci were isolated from blood, but it was challenging to identify its species. This study aimed to characterize the causative bacterium SP4011 and to elucidate its species. METHODS The whole-genome sequence and biochemical characteristics of SP4011 were determined. Based on the genome sequence, phylogenetic analysis was performed with standard strains of each species of α-hemolytic streptococci. Digital DNA-DNA hybridization (dDDH) and average nucleotide identity (ANI) values were calculated. RESULTS SP4011 showed optochin susceptibility and bile solubility, but did not react with pneumococcal omni antiserum. Phylogenetic analysis of the whole-genome sequence showed that SP4011 clustered with S. pneumoniae and S. pseodopneumoniae and was most closely related to S. pseodopneumoniae. Genomic analysis revealed that ANI and dDDH values between SP4011 and S. pseodopneumoniae were 94.0 % and 56.0 %, respectively, and between SP4011 and S. pneumoniae were 93.3 % and 52.2 %, respectively. Biochemical characteristics also showed differences between SP4011 and S. pseodopneumoniae and between SP4011 and S. pneumoniae. These results indicate that SP4011 is a novel species. CONCLUSION Our findings indicate that SP4011 is a novel species of the genus Streptococcus. SP4011 has biochemical characteristics similar to S. pneumoniae, making it challenging to differentiate and requiring careful clinical diagnosis. This isolate was proposed to be a novel species, Streptococcus parapneumoniae sp. nov. The strain type is SP4011T (= JCM 36068T = KCTC 21228T).
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Affiliation(s)
- Yuri Katayama
- Department of Nephrology, National Center for Global Health and Medicine, Tokyo, Japan
| | - Masatomo Morita
- Department of Bacteriology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Bin Chang
- Department of Bacteriology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Daisuke Katagiri
- Department of Nephrology, National Center for Global Health and Medicine, Tokyo, Japan.
| | - Masahiro Ishikane
- Disease Control and Prevention Center, National Center for Global Health and Medicine, Tokyo, Japan.
| | - Gen Yamada
- Disease Control and Prevention Center, National Center for Global Health and Medicine, Tokyo, Japan
| | - Kazuhisa Mezaki
- Department of Clinical Laboratory, National Center for Global Health and Medicine, Tokyo, Japan
| | - Masami Kurokawa
- Department of Clinical Laboratory, National Center for Global Health and Medicine, Tokyo, Japan
| | - Hideki Takano
- Department of Nephrology, National Center for Global Health and Medicine, Tokyo, Japan
| | - Yukihiro Akeda
- Department of Bacteriology I, National Institute of Infectious Diseases, Tokyo, Japan
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23
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Mallawaarachchi S, Tonkin-Hill G, Pöntinen A, Calland J, Gladstone R, Arredondo-Alonso S, MacAlasdair N, Thorpe H, Top J, Sheppard S, Balding D, Croucher N, Corander J. Detecting co-selection through excess linkage disequilibrium in bacterial genomes. NAR Genom Bioinform 2024; 6:lqae061. [PMID: 38846349 PMCID: PMC11155488 DOI: 10.1093/nargab/lqae061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2024] [Revised: 04/15/2024] [Accepted: 05/14/2024] [Indexed: 06/09/2024] Open
Abstract
Population genomics has revolutionized our ability to study bacterial evolution by enabling data-driven discovery of the genetic architecture of trait variation. Genome-wide association studies (GWAS) have more recently become accompanied by genome-wide epistasis and co-selection (GWES) analysis, which offers a phenotype-free approach to generating hypotheses about selective processes that simultaneously impact multiple loci across the genome. However, existing GWES methods only consider associations between distant pairs of loci within the genome due to the strong impact of linkage-disequilibrium (LD) over short distances. Based on the general functional organisation of genomes it is nevertheless expected that majority of co-selection and epistasis will act within relatively short genomic proximity, on co-variation occurring within genes and their promoter regions, and within operons. Here, we introduce LDWeaver, which enables an exhaustive GWES across both short- and long-range LD, to disentangle likely neutral co-variation from selection. We demonstrate the ability of LDWeaver to efficiently generate hypotheses about co-selection using large genomic surveys of multiple major human bacterial pathogen species and validate several findings using functional annotation and phenotypic measurements. Our approach will facilitate the study of bacterial evolution in the light of rapidly expanding population genomic data.
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Affiliation(s)
| | | | - Anna K Pöntinen
- Department of Biostatistics, University of Oslo, Oslo, Norway
- Norwegian National Advisory Unit on Detection of Antimicrobial Resistance, Department of Microbiology and Infection Control, University Hospital of North Norway, Tromsø, Norway
| | - Jessica K Calland
- Oslo Centre for Biostatistics and Epidemiology, Oslo University Hospital, Oslo, Norway
| | | | | | | | - Harry A Thorpe
- Department of Biostatistics, University of Oslo, Oslo, Norway
| | - Janetta Top
- Department of Medical Microbiology, UMC Utrecht, Utrecht, The Netherlands
| | - Samuel K Sheppard
- Ineos Oxford Institute of Antimicrobial Research, Department of Biology, University of Oxford, Oxford, United Kingdom
| | - David Balding
- Melbourne Integrative Genomics, School of BioSciences and School of Mathematics & Statistics, University of Melbourne, Parkville, Victoria, Australia
| | - Nicholas J Croucher
- Department of Infectious Disease Epidemiology, School of Public Health, Imperial College London, United Kingdom
- MRC Centre for Global Infectious Disease Analysis, School of Public Health, Imperial College London, United Kingdom
| | - Jukka Corander
- Department of Biostatistics, University of Oslo, Oslo, Norway
- Parasites and Microbes, Wellcome Sanger Institute, Cambridge, UK
- Helsinki Institute of Information Technology, Department of Mathematics and Statistics, University of Helsinki, Helsinki, Finland
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24
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Cave R, Kalizang'oma A, Chaguza C, Mwalukomo TS, Kamng'ona A, Brown C, Msefula J, Bonomali F, Nyirenda R, Swarthout TD, Kwambana-Adams B, French N, Heyderman RS. Expansion of pneumococcal serotype 23F and 14 lineages with genotypic changes in capsule polysaccharide locus and virulence gene profiles post introduction of pneumococcal conjugate vaccine in Blantyre, Malawi. Microb Genom 2024; 10. [PMID: 38896467 DOI: 10.1099/mgen.0.001264] [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] [Indexed: 06/21/2024] Open
Abstract
Since the introduction of the 13-valent pneumococcal conjugate vaccine (PCV13) in Malawi in 2011, there has been persistent carriage of vaccine serotype (VT) Streptococcus pneumoniae, despite high vaccine coverage. To determine if there has been a genetic change within the VT capsule polysaccharide (cps) loci since the vaccine's introduction, we compared 1022 whole-genome-sequenced VT isolates from 1998 to 2019. We identified the clonal expansion of a multidrug-resistant, penicillin non-susceptible serotype 23F GPSC14-ST2059 lineage, a serotype 14 GPSC9-ST782 lineage and a novel serotype 14 sequence type GPSC9-ST18728 lineage. Serotype 23F GPSC14-ST2059 had an I253T mutation within the capsule oligosaccharide repeat unit polymerase Wzy protein, which is predicted in silico to alter the protein pocket cavity. Moreover, serotype 23F GPSC14-ST2059 had SNPs in the DNA binding sites for the cps transcriptional repressors CspR and SpxR. Serotype 14 GPSC9-ST782 harbours a non-truncated version of the large repetitive protein (Lrp), containing a Cna protein B-type domain which is also present in proteins associated with infection and colonisation. These emergent lineages also harboured genes associated with antibiotic resistance, and the promotion of colonisation and infection which were absent in other lineages of the same serotype. Together these data suggest that in addition to serotype replacement, modifications of the capsule locus associated with changes in virulence factor expression and antibiotic resistance may promote vaccine escape. In summary, the study highlights that the persistence of vaccine serotype carriage despite high vaccine coverage in Malawi may be partly caused by expansion of VT lineages post-PCV13 rollout.
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Affiliation(s)
- Rory Cave
- Mucosal Pathogens Research Group, Research Department of Infection, Division of Infection & Immunity, University College London, London, UK
| | - Akuzike Kalizang'oma
- Mucosal Pathogens Research Group, Research Department of Infection, Division of Infection & Immunity, University College London, London, UK
- Malawi Liverpool Wellcome Programme, Blantyre, Malawi
| | - Chrispin Chaguza
- Parasites and Microbes, Wellcome Sanger Institute, Cambridge, UK
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, Yale University, New Haven, CT, USA
| | | | | | - Comfort Brown
- Malawi Liverpool Wellcome Programme, Blantyre, Malawi
| | | | | | | | - Todd D Swarthout
- Mucosal Pathogens Research Group, Research Department of Infection, Division of Infection & Immunity, University College London, London, UK
- Malawi Liverpool Wellcome Programme, Blantyre, Malawi
- Julius Center for Health Sciences and Primary Care, University Medical Centre Utrecht, Utrecht, Netherlands
| | - Brenda Kwambana-Adams
- Mucosal Pathogens Research Group, Research Department of Infection, Division of Infection & Immunity, University College London, London, UK
- Malawi Liverpool Wellcome Programme, Blantyre, Malawi
| | - Neil French
- Clinical Infection, Microbiology and Immunology, Institute of Infection Veterinary & Ecological Science, University of Liverpool, Liverpool, UK
| | - Robert S Heyderman
- Mucosal Pathogens Research Group, Research Department of Infection, Division of Infection & Immunity, University College London, London, UK
- Malawi Liverpool Wellcome Programme, Blantyre, Malawi
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25
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Ramos B, Cunha MV. The mobilome of Staphylococcus aureus from wild ungulates reveals epidemiological links at the animal-human interface. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 356:124241. [PMID: 38825220 DOI: 10.1016/j.envpol.2024.124241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 04/28/2024] [Accepted: 05/26/2024] [Indexed: 06/04/2024]
Abstract
Staphylococcus aureus thrives at animal-human-environment interfaces. A large-scale work from our group indicated that antimicrobial resistance (AMR) in commensal S. aureus strains from wild ungulates is associated with agricultural land cover and livestock farming, raising the hypothesis that AMR genes in wildlife strains may originate from different hosts, namely via exchange of mobile genetic elements (MGE). In this work, we generate the largest available dataset of S. aureus draft genomes from wild ungulates in Portugal and explore their mobilome, which can determine important traits such as AMR, virulence, and host specificity, to understand MGE exchange. Core genome multi-locus sequence typing based on 98 newly generated draft genomes and 101 publicly available genomes from Portugal demonstrated that the genomic relatedness of S. aureus from wild ungulates assigned to livestock-associated sequence types (ST) is greater compared to wild ungulate isolates assigned to human-associated STs. Screening of host specificity determinants disclosed the unexpected presence in wildlife of the immune evasion cluster encoded in φSa3 prophage, described as a human-specific virulence determinant. Additionally, two plasmids, pAVX and pETB, previously associated with avian species and humans, respectively, and the Tn553 transposon were detected. Both pETB and Tn553 encode penicillin resistance through blaZ. Pangenome analysis of wild ungulate isolates shows a core genome fraction of 2133 genes, with isolates assigned to ST72 and ST3224 being distinguished from the remaining by MGEs, although there is no reported role of these in adaptation to wildlife. AMR related gene clusters found in the shell genome are directly linked to resistance against penicillin, macrolides, fosfomycin, and aminoglycosides, and they represent mobile ARGs. Altogether, our findings support epidemiological interactions of human and non-human hosts at interfaces, with MGE exchange, including AMR determinants, associated with putative indirect movements of S. aureus among human and wildlife hosts that might be bridged by livestock.
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Affiliation(s)
- Beatriz Ramos
- Centre for Ecology, Evolution and Environmental Changes (cE3c) & CHANGE - Global Change and Sustainability Institute, Faculdade de Ciências da Universidade de Lisboa, 1749-016, Lisboa, Portugal; Biosystems and Integrative Sciences Institute (BioISI), Faculdade de Ciências da Universidade de Lisboa, 1749-016, Lisboa, Portugal
| | - Mónica V Cunha
- Centre for Ecology, Evolution and Environmental Changes (cE3c) & CHANGE - Global Change and Sustainability Institute, Faculdade de Ciências da Universidade de Lisboa, 1749-016, Lisboa, Portugal; Biosystems and Integrative Sciences Institute (BioISI), Faculdade de Ciências da Universidade de Lisboa, 1749-016, Lisboa, Portugal.
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26
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Li H, Marin M, Farhat MR. Exploring gene content with pangene graphs. ARXIV 2024:arXiv:2402.16185v3. [PMID: 38463499 PMCID: PMC10925376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
Motivation The gene content regulates the biology of an organism. It varies between species and between individuals of the same species. Although tools have been developed to identify gene content changes in bacterial genomes, none is applicable to collections of large eukaryotic genomes such as the human pangenome. Results We developed pangene, a computational tool to identify gene orientation, gene order and gene copy-number changes in a collection of genomes. Pangene aligns a set of input protein sequences to the genomes, resolves redundancies between protein sequences and constructs a gene graph with each genome represented as a walk in the graph. It additionally finds subgraphs, which we call bibubbles, that capture gene content changes. Applied to the human pangenome, pangene identifies known gene-level variations and reveals complex haplotypes that are not well studied before. Pangene also works with high-quality bacterial pangenome and reports similar numbers of core and accessory genes in comparison to existing tools. Availability and implementation Source code at https://github.com/lh3/pangene; pre-built pangene graphs can be downloaded from https://zenodo.org/records/8118576 and visualized at https://pangene.bioinweb.org.
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Affiliation(s)
- Heng Li
- Dana-Farber Cancer Institute, 450 Brookline Ave, Boston, MA 02215, USA
- Harvard Medical School, 10 Shattuck St, Boston, MA 02215, USA
- Broad Insitute of Harvard and MIT, 415 Main St, Cambridge, MA 02142, USA
| | | | - Maha Reda Farhat
- Harvard Medical School, 10 Shattuck St, Boston, MA 02215, USA
- Pulmonary and Critical Care Medicine, Massachusetts General Hospital, Boston, USA
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27
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Wang T, Shi Y, Zheng M, Zheng J. Comparative Genomics Unveils Functional Diversity, Pangenome Openness, and Underlying Biological Drivers among Bacillus subtilis Group. Microorganisms 2024; 12:986. [PMID: 38792815 PMCID: PMC11124052 DOI: 10.3390/microorganisms12050986] [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: 04/14/2024] [Revised: 05/04/2024] [Accepted: 05/10/2024] [Indexed: 05/26/2024] Open
Abstract
The Bacillus subtilis group (Bs group), with Bacillus subtilis as its core species, holds significant research and economic value in various fields, including science, industrial production, food, and pharmaceuticals. However, most studies have been confined to comparative genomics analyses and exploration within individual genomes at the level of species, with few conducted within groups across different species. This study focused on Bacillus subtilis, the model of Gram-positive bacteria, and 14 other species with significant research value, employing comparative pangenomics as well as population enrichment analysis to ascertain the functional enrichment and diversity. Through the quantification of pangenome openness, this work revealed the underlying biological drivers and significant correlation between pangenome openness and various factors, including the distribution of toxin-antitoxin- and integrase-related genes, as well as the number of endonucleases, recombinases, repair system-related genes, prophages, integrases, and transfer mobile elements. Furthermore, the functional enrichment results indicated the potential for secondary metabolite, probiotic, and antibiotic exploration in Bacillus licheniformis, Bacillus paralicheniformis, and Bacillus spizizenii, respectively. In general, this work systematically exposed the quantification of pangenome openness, biological drivers, the pivotal role of genomic instability factors, and mobile elements, providing targeted exploration guidance for the Bs group.
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Affiliation(s)
- Taiquan Wang
- National Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (T.W.); (Y.S.); (M.Z.)
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan 430070, China
| | - Yiling Shi
- National Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (T.W.); (Y.S.); (M.Z.)
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan 430070, China
| | - Mengzhuo Zheng
- National Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (T.W.); (Y.S.); (M.Z.)
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan 430070, China
| | - Jinshui Zheng
- National Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (T.W.); (Y.S.); (M.Z.)
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan 430070, China
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28
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Vieira A, Wan Y, Ryan Y, Li HK, Guy RL, Papangeli M, Huse KK, Reeves LC, Soo VWC, Daniel R, Harley A, Broughton K, Dhami C, Ganner M, Ganner MA, Mumin Z, Razaei M, Rundberg E, Mammadov R, Mills EA, Sgro V, Mok KY, Didelot X, Croucher NJ, Jauneikaite E, Lamagni T, Brown CS, Coelho J, Sriskandan S. Rapid expansion and international spread of M1 UK in the post-pandemic UK upsurge of Streptococcus pyogenes. Nat Commun 2024; 15:3916. [PMID: 38729927 PMCID: PMC11087535 DOI: 10.1038/s41467-024-47929-7] [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: 01/12/2024] [Accepted: 04/15/2024] [Indexed: 05/12/2024] Open
Abstract
The UK observed a marked increase in scarlet fever and invasive group A streptococcal infection in 2022 with severe outcomes in children and similar trends worldwide. Here we report lineage M1UK to be the dominant source of invasive infections in this upsurge. Compared with ancestral M1global strains, invasive M1UK strains exhibit reduced genomic diversity and fewer mutations in two-component regulator genes covRS. The emergence of M1UK is dated to 2008. Following a bottleneck coinciding with the COVID-19 pandemic, three emergent M1UK clades underwent rapid nationwide expansion, despite lack of detection in previous years. All M1UK isolates thus-far sequenced globally have a phylogenetic origin in the UK, with dispersal of the new clades in Europe. While waning immunity may promote streptococcal epidemics, the genetic features of M1UK point to a fitness advantage in pathogenicity, and a striking ability to persist through population bottlenecks.
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Affiliation(s)
- Ana Vieira
- Department of Infectious Disease, Imperial College London, London, UK
- Centre for Bacterial Resistance Biology, Imperial College London, London, UK
- NIHR Health Protection Research Unit in Healthcare-associated Infections and AMR, Imperial College London, London, UK
| | - Yu Wan
- Department of Infectious Disease, Imperial College London, London, UK
- NIHR Health Protection Research Unit in Healthcare-associated Infections and AMR, Imperial College London, London, UK
- Healthcare-Associated Infections, Fungal, AMR, AMU, and Sepsis Division, UK Health Security Agency, London, UK
| | - Yan Ryan
- Reference Services Division, UK Health Security Agency, London, UK
| | - Ho Kwong Li
- Department of Infectious Disease, Imperial College London, London, UK
- Centre for Bacterial Resistance Biology, Imperial College London, London, UK
| | - Rebecca L Guy
- Healthcare-Associated Infections, Fungal, AMR, AMU, and Sepsis Division, UK Health Security Agency, London, UK
| | - Maria Papangeli
- Department of Infectious Disease, Imperial College London, London, UK
- Centre for Bacterial Resistance Biology, Imperial College London, London, UK
| | - Kristin K Huse
- Department of Infectious Disease, Imperial College London, London, UK
- Centre for Bacterial Resistance Biology, Imperial College London, London, UK
| | - Lucy C Reeves
- Department of Infectious Disease, Imperial College London, London, UK
- Centre for Bacterial Resistance Biology, Imperial College London, London, UK
| | - Valerie W C Soo
- Department of Infectious Disease, Imperial College London, London, UK
- Centre for Bacterial Resistance Biology, Imperial College London, London, UK
| | - Roger Daniel
- Reference Services Division, UK Health Security Agency, London, UK
| | | | - Karen Broughton
- Reference Services Division, UK Health Security Agency, London, UK
| | - Chenchal Dhami
- Reference Services Division, UK Health Security Agency, London, UK
| | - Mark Ganner
- Reference Services Division, UK Health Security Agency, London, UK
| | | | - Zaynab Mumin
- Reference Services Division, UK Health Security Agency, London, UK
| | - Maryam Razaei
- Reference Services Division, UK Health Security Agency, London, UK
| | - Emma Rundberg
- Reference Services Division, UK Health Security Agency, London, UK
| | - Rufat Mammadov
- Reference Services Division, UK Health Security Agency, London, UK
| | - Ewurabena A Mills
- Department of Infectious Disease, Imperial College London, London, UK
- Centre for Bacterial Resistance Biology, Imperial College London, London, UK
| | - Vincenzo Sgro
- Department of Infectious Disease, Imperial College London, London, UK
| | - Kai Yi Mok
- Department of Infectious Disease, Imperial College London, London, UK
| | - Xavier Didelot
- School of Life Sciences and Department of Statistics, University of Warwick, Coventry, UK
| | - Nicholas J Croucher
- School of Public Health, Imperial College London, London, UK
- MRC Centre for Global Infectious Disease Analysis, Imperial College London, London, UK
| | - Elita Jauneikaite
- NIHR Health Protection Research Unit in Healthcare-associated Infections and AMR, Imperial College London, London, UK
- School of Public Health, Imperial College London, London, UK
- MRC Centre for Global Infectious Disease Analysis, Imperial College London, London, UK
| | - Theresa Lamagni
- NIHR Health Protection Research Unit in Healthcare-associated Infections and AMR, Imperial College London, London, UK
- Healthcare-Associated Infections, Fungal, AMR, AMU, and Sepsis Division, UK Health Security Agency, London, UK
| | - Colin S Brown
- NIHR Health Protection Research Unit in Healthcare-associated Infections and AMR, Imperial College London, London, UK
- Healthcare-Associated Infections, Fungal, AMR, AMU, and Sepsis Division, UK Health Security Agency, London, UK
| | - Juliana Coelho
- NIHR Health Protection Research Unit in Healthcare-associated Infections and AMR, Imperial College London, London, UK.
- Healthcare-Associated Infections, Fungal, AMR, AMU, and Sepsis Division, UK Health Security Agency, London, UK.
- Reference Services Division, UK Health Security Agency, London, UK.
| | - Shiranee Sriskandan
- Department of Infectious Disease, Imperial College London, London, UK.
- Centre for Bacterial Resistance Biology, Imperial College London, London, UK.
- NIHR Health Protection Research Unit in Healthcare-associated Infections and AMR, Imperial College London, London, UK.
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29
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Zhou C, Schwee C, Matovu RE, Wiley JD, Wiley MR, Berning BJ, Iwen PC, Fey PD. Eubacterium callanderi bacteremia: A case report. IDCases 2024; 36:e01989. [PMID: 38774153 PMCID: PMC11107343 DOI: 10.1016/j.idcr.2024.e01989] [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: 04/30/2024] [Revised: 05/06/2024] [Accepted: 05/07/2024] [Indexed: 05/24/2024] Open
Abstract
Eubacterium species are a group of obligated anaerobic gram-positive bacilli that are recognized as commensals of the gastrointestinal tract flora. Cases of bacteremia mediated by Eubacterium are rare. This report describes a case of bacteremia caused by Eubacterium callanderi in an 82-year-old female with a history of a cecal perforation secondary to an obstructing sigmoid stricture. The results showed the utility of using whole genome sequencing to identify the causative agent and underlined the significance to identify anaerobic organisms in diagnostic microbiology practice and to perform antimicrobial susceptibility testing to guide therapy and enhance patient outcomes.
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Affiliation(s)
- Chunyi Zhou
- Department of Pathology, Microbiology, and Immunology, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Casey Schwee
- Department of Pathology, Microbiology, and Immunology, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Ronald E. Matovu
- Clinical Microbiology Laboratory, Nebraska Medicine, Omaha, NE 68105, USA
| | | | - Michael R. Wiley
- Department of Pathology, Microbiology, and Immunology, University of Nebraska Medical Center, Omaha, NE 68198, USA
- PraesensBio, LLC, Omaha, NE 68124, USA
- Nebraska Public Health Laboratory, Omaha, NE 68198, USA
| | - Bennett J. Berning
- Division of Acute Care Surgery, Department of Surgery, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Peter C. Iwen
- Department of Pathology, Microbiology, and Immunology, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Nebraska Public Health Laboratory, Omaha, NE 68198, USA
| | - Paul D. Fey
- Department of Pathology, Microbiology, and Immunology, University of Nebraska Medical Center, Omaha, NE 68198, USA
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30
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Feng Y, Arsenault D, Louyakis AS, Altman-Price N, Gophna U, Papke RT, Gogarten JP. Using the pan-genomic framework for the discovery of genomic islands in the haloarchaeon Halorubrum ezzemoulense. mBio 2024; 15:e0040824. [PMID: 38619241 PMCID: PMC11078007 DOI: 10.1128/mbio.00408-24] [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: 03/04/2024] [Accepted: 03/19/2024] [Indexed: 04/16/2024] Open
Abstract
In this study, we use pan-genomics to characterize the genomic variability of the widely dispersed halophilic archaeal species Halorubrum ezzemoulense (Hez). We include a multi-regional sampling of newly sequenced, high-quality draft genomes. The pan-genome graph of the species reveals 50 genomic islands that represent rare accessory genetic capabilities available to members. Most notably, we observe rearrangements that have led to the insertion/recombination/replacement of mutually exclusive genomic islands in equivalent genome positions ("homeocassettes"). These conflicting islands encode for similar functions, but homologs from islands located between the same core genes exhibit high divergence on the amino acid level, while the neighboring core genes are nearly identical. Both islands of a homeocassette often coexist in the same geographic location, suggesting that either island may be beyond the reach of selective sweeps and that these loci of divergence between Hez members are maintained and persist long term. This implies that subsections of the population have different niche preferences and rare metabolic capabilities. After an evaluation of the gene content in the homeocassettes, we speculate that these islands may play a role in the speciation, niche adaptability, and group selection dynamics in Hez. Though homeocassettes are first described in this study, similar replacements and divergence of genes on genomic islands have been previously reported in other Haloarchaea and distantly related Archaea, suggesting that homeocassettes may be a feature in a wide range of organisms outside of Hez.IMPORTANCEThis study catalogs the rare genes discovered in strains of the species Halorubrum ezzemoulense (Hez), an obligate halophilic archaeon, through the perspective of its pan-genome. These rare genes are often found to be arranged on islands that confer metabolic and transport functions and contain genes that have eluded previous studies. The discovery of divergent, but homologous islands occupying equivalent genome positions ("homeocassettes") in different genomes, reveals significant new information on genome evolution in Hez. Homeocassette pairs encode for similar functions, but their dissimilarity and distribution imply high rates of recombination, different specializations, and niche preferences in Hez. The coexistence of both islands of a homeocassette pair in multiple environments demonstrates that both islands are beyond the reach of selective sweeps and that these genome content differences between strains persist long term. The switch between islands through recombination under different environmental conditions may lead to a greater range of niche adaptability in Hez.
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Affiliation(s)
- Yutian Feng
- Department of Molecular and Cell Biology, University of Connecticut, Storrs, Connecticut, USA
| | - Danielle Arsenault
- Department of Molecular and Cell Biology, University of Connecticut, Storrs, Connecticut, USA
| | - Artemis S. Louyakis
- Department of Molecular and Cell Biology, University of Connecticut, Storrs, Connecticut, USA
| | - Neta Altman-Price
- The Shmunis School of Biomedicine and Cancer Research, Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
- Avinoam Adam Department of Natural Sciences, The Open University of Israel, Raanana, Israel
| | - Uri Gophna
- The Shmunis School of Biomedicine and Cancer Research, Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
| | - R. Thane Papke
- Department of Molecular and Cell Biology, University of Connecticut, Storrs, Connecticut, USA
| | - Johann Peter Gogarten
- Department of Molecular and Cell Biology, University of Connecticut, Storrs, Connecticut, USA
- Institute for Systems Genomics, University of Connecticut, Storrs, Connecticut, USA
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31
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Aracil-Gisbert S, Fernández-De-Bobadilla MD, Guerra-Pinto N, Serrano-Calleja S, Pérez-Cobas AE, Soriano C, de Pablo R, Lanza VF, Pérez-Viso B, Reuters S, Hasman H, Cantón R, Baquero F, Coque TM. The ICU environment contributes to the endemicity of the " Serratia marcescens complex" in the hospital setting. mBio 2024; 15:e0305423. [PMID: 38564701 PMCID: PMC11077947 DOI: 10.1128/mbio.03054-23] [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: 11/18/2023] [Accepted: 03/04/2024] [Indexed: 04/04/2024] Open
Abstract
Serratia marcescens is an opportunistic pathogen historically associated with sudden outbreaks in intensive care units (ICUs) and the spread of carbapenem-resistant genes. However, the ecology of S. marcescens populations in the hospital ecosystem remains largely unknown. We combined epidemiological information of 1,432 Serratia spp. isolates collected from sinks of a large ICU that underwent demographic and operational changes (2019-2021) and 99 non-redundant outbreak/non-outbreak isolates from the same hospital (2003-2019) with 165 genomic data. These genomes were grouped into clades (1-4) and subclades (A and B) associated with distinct species: Serratia nematodiphila (1A), S. marcescens (1B), Serratia bockelmannii (2A), Serratia ureilytica (2B), S. marcescens/Serratia nevei (3), and S. nevei (4A and 4B). They may be classified into an S. marcescens complex (SMC) due to the similarity between/within subclades (average nucleotide identity >95%-98%), with clades 3 and 4 predominating in our study and publicly available databases. Chromosomal AmpC β-lactamase with unusual basal-like expression and prodigiosin-lacking species contrasted classical features of Serratia. We found persistent and coexisting clones in sinks of subclades 4A (ST92 and ST490) and 4B (ST424), clonally related to outbreak isolates carrying blaVIM-1 or blaOXA-48 on prevalent IncL/pB77-CPsm plasmids from our hospital since 2017. The distribution of SMC populations in ICU sinks and patients reflects how Serratia species acquire, maintain, and enable plasmid evolution in both "source" (permanent, sinks) and "sink" (transient, patients) hospital patches. The results contribute to understanding how water sinks serve as reservoirs of Enterobacterales clones and plasmids that enable the persistence of carbapenemase genes in healthcare settings, potentially leading to outbreaks and/or hospital-acquired infections.IMPORTANCEThe "hospital environment," including sinks and surfaces, is increasingly recognized as a reservoir for bacterial species, clones, and plasmids of high epidemiological concern. Available studies on Serratia epidemiology have focused mainly on outbreaks of multidrug-resistant species, overlooking local longitudinal analyses necessary for understanding the dynamics of opportunistic pathogens and antibiotic-resistant genes within the hospital setting. This long-term genomic comparative analysis of Serratia isolated from the ICU environment with isolates causing nosocomial infections and/or outbreaks within the same hospital revealed the coexistence and persistence of Serratia populations in water reservoirs. Moreover, predominant sink strains may acquire highly conserved and widely distributed plasmids carrying carbapenemase genes, such as the prevalent IncL-pB77-CPsm (pOXA48), persisting in ICU sinks for years. The work highlights the relevance of ICU environmental reservoirs in the endemicity of certain opportunistic pathogens and resistance mechanisms mainly confined to hospitals.
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Affiliation(s)
- Sonia Aracil-Gisbert
- Microbiology, Ramón y Cajal University Hospital and Ramón y Cajal Health Research Institute (IRYCIS), Madrid, Spain
- Member of the ESCMID Study Group for Epidemiological Markers (ESGEM), Basel, Switzerland
- Member of the ESCMID Food- and Water-borne Infections Study Group (EFWISG), Basel, Switzerland
| | - Miguel D. Fernández-De-Bobadilla
- Microbiology, Ramón y Cajal University Hospital and Ramón y Cajal Health Research Institute (IRYCIS), Madrid, Spain
- Member of the ESCMID Study Group for Epidemiological Markers (ESGEM), Basel, Switzerland
- Member of the ESCMID Food- and Water-borne Infections Study Group (EFWISG), Basel, Switzerland
| | - Natalia Guerra-Pinto
- Microbiology, Ramón y Cajal University Hospital and Ramón y Cajal Health Research Institute (IRYCIS), Madrid, Spain
- Member of the ESCMID Study Group for Epidemiological Markers (ESGEM), Basel, Switzerland
- Member of the ESCMID Food- and Water-borne Infections Study Group (EFWISG), Basel, Switzerland
| | - Silvia Serrano-Calleja
- Microbiology, Ramón y Cajal University Hospital and Ramón y Cajal Health Research Institute (IRYCIS), Madrid, Spain
| | - Ana Elena Pérez-Cobas
- Microbiology, Ramón y Cajal University Hospital and Ramón y Cajal Health Research Institute (IRYCIS), Madrid, Spain
- Member of the ESCMID Study Group for Epidemiological Markers (ESGEM), Basel, Switzerland
- Member of the ESCMID Food- and Water-borne Infections Study Group (EFWISG), Basel, Switzerland
- Biomedical Research Center Network of Infectious Diseases (CIBERINFEC), Madrid, Spain
| | - Cruz Soriano
- Intensive Medicine, Ramón y Cajal University Hospital and Ramón y Cajal Health Research Institute (IRYCIS), Madrid, Spain
- University of Alcalá (UAH), Madrid, Spain
| | - Raúl de Pablo
- Intensive Medicine, Ramón y Cajal University Hospital and Ramón y Cajal Health Research Institute (IRYCIS), Madrid, Spain
- University of Alcalá (UAH), Madrid, Spain
| | - Val F. Lanza
- Biomedical Research Center Network of Infectious Diseases (CIBERINFEC), Madrid, Spain
- Bioinformatics Unit, Ramón y Cajal University Hospital and Ramón y Cajal Health Research Institute (IRYCIS), Madrid, Spain
| | - Blanca Pérez-Viso
- Microbiology, Ramón y Cajal University Hospital and Ramón y Cajal Health Research Institute (IRYCIS), Madrid, Spain
| | - Sandra Reuters
- Member of the ESCMID Study Group for Epidemiological Markers (ESGEM), Basel, Switzerland
- Institute for Infection Prevention and Control, Medical Center–University of Freiburg, Freiburg, Germany
| | - Henrik Hasman
- Member of the ESCMID Study Group for Epidemiological Markers (ESGEM), Basel, Switzerland
- Member of the ESCMID Food- and Water-borne Infections Study Group (EFWISG), Basel, Switzerland
- Statens Serum Institut, Copenhagen, Denmark
| | - Rafael Cantón
- Microbiology, Ramón y Cajal University Hospital and Ramón y Cajal Health Research Institute (IRYCIS), Madrid, Spain
- Biomedical Research Center Network of Infectious Diseases (CIBERINFEC), Madrid, Spain
| | - Fernando Baquero
- Microbiology, Ramón y Cajal University Hospital and Ramón y Cajal Health Research Institute (IRYCIS), Madrid, Spain
- Biomedical Research Center Network of Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Teresa M. Coque
- Microbiology, Ramón y Cajal University Hospital and Ramón y Cajal Health Research Institute (IRYCIS), Madrid, Spain
- Member of the ESCMID Study Group for Epidemiological Markers (ESGEM), Basel, Switzerland
- Member of the ESCMID Food- and Water-borne Infections Study Group (EFWISG), Basel, Switzerland
- Biomedical Research Center Network of Infectious Diseases (CIBERINFEC), Madrid, Spain
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Souza SSR, Smith JT, Marcovici MM, Eckhardt EM, Hansel NB, Martin IW, Andam CP. Demographic fluctuations in bloodstream Staphylococcus aureus lineages configure the mobile gene pool and antimicrobial resistance. NPJ ANTIMICROBIALS AND RESISTANCE 2024; 2:14. [PMID: 38725655 PMCID: PMC11076216 DOI: 10.1038/s44259-024-00032-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 03/08/2024] [Indexed: 05/12/2024]
Abstract
Staphylococcus aureus in the bloodstream causes high morbidity and mortality, exacerbated by the spread of multidrug-resistant and methicillin-resistant S. aureus (MRSA). We aimed to characterize the circulating lineages of S. aureus from bloodstream infections and the contribution of individual lineages to resistance over time. Here, we generated 852 high-quality short-read draft genome sequences of S. aureus isolates from patient blood cultures in a single hospital from 2010 to 2022. A total of 80 previously recognized sequence types (ST) and five major clonal complexes are present in the population. Two frequently detected lineages, ST5 and ST8 exhibited fluctuating demographic structures throughout their histories. The rise and fall in their population growth coincided with the acquisition of antimicrobial resistance, mobile genetic elements, and superantigen genes, thus shaping the accessory genome structure across the entire population. These results reflect undetected selective events and changing ecology of multidrug-resistant S. aureus in the bloodstream.
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Affiliation(s)
- Stephanie S. R. Souza
- Department of Biological Sciences, University at Albany, State University of New York, Albany, New York, NY USA
| | - Joshua T. Smith
- Department of Molecular, Cellular and Biomedical Sciences, University of New Hampshire, Durham, NH USA
- Infectious Disease and Microbiome Program, Broad Institute of MIT and Harvard, Cambridge, MA USA
| | - Michael M. Marcovici
- Department of Biological Sciences, University at Albany, State University of New York, Albany, New York, NY USA
| | - Elissa M. Eckhardt
- Dartmouth-Hitchcock Medical Center and Dartmouth College Geisel School of Medicine, Lebanon, NH USA
| | - Nicole B. Hansel
- Dartmouth-Hitchcock Medical Center and Dartmouth College Geisel School of Medicine, Lebanon, NH USA
| | - Isabella W. Martin
- Dartmouth-Hitchcock Medical Center and Dartmouth College Geisel School of Medicine, Lebanon, NH USA
| | - Cheryl P. Andam
- Department of Biological Sciences, University at Albany, State University of New York, Albany, New York, NY USA
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Heinz E, Pearse O, Zuza A, Bilima S, Msefula C, Musicha P, Siyabu P, Tewesa E, Graf FE, Lester R, Lissauer S, Cornick J, Lewis JM, Kawaza K, Thomson NR, Feasey NA. Longitudinal analysis within one hospital in sub-Saharan Africa over 20 years reveals repeated replacements of dominant clones of Klebsiella pneumoniae and stresses the importance to include temporal patterns for vaccine design considerations. Genome Med 2024; 16:67. [PMID: 38711148 DOI: 10.1186/s13073-024-01342-3] [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: 10/10/2023] [Accepted: 04/30/2024] [Indexed: 05/08/2024] Open
Abstract
BACKGROUND Infections caused by multidrug-resistant gram-negative bacteria present a severe threat to global public health. The WHO defines drug-resistant Klebsiella pneumoniae as a priority pathogen for which alternative treatments are needed given the limited treatment options and the rapid acquisition of novel resistance mechanisms by this species. Longitudinal descriptions of genomic epidemiology of Klebsiella pneumoniae can inform management strategies but data from sub-Saharan Africa are lacking. METHODS We present a longitudinal analysis of all invasive K. pneumoniae isolates from a single hospital in Blantyre, Malawi, southern Africa, from 1998 to 2020, combining clinical data with genome sequence analysis of the isolates. RESULTS We show that after a dramatic increase in the number of infections from 2016 K. pneumoniae becomes hyperendemic, driven by an increase in neonatal infections. Genomic data show repeated waves of clonal expansion of different, often ward-restricted, lineages, suggestive of hospital-associated transmission. We describe temporal trends in resistance and surface antigens, of relevance for vaccine development. CONCLUSIONS Our data highlight a clear need for new interventions to prevent rather than treat K. pneumoniae infections in our setting. Whilst one option may be a vaccine, the majority of cases could be avoided by an increased focus on and investment in infection prevention and control measures, which would reduce all healthcare-associated infections and not just one.
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Affiliation(s)
- Eva Heinz
- Department of Vector Biology, Liverpool School of Tropical Medicine, Pembroke PlaceLiverpool, L3 5QA, UK.
- Department of Clinical Sciences, Liverpool School of Tropical Medicine, Pembroke PlaceLiverpool, L3 5QA, UK.
| | - Oliver Pearse
- Department of Clinical Sciences, Liverpool School of Tropical Medicine, Pembroke PlaceLiverpool, L3 5QA, UK
- Malawi Liverpool Wellcome Programme, Kamuzu University of Health Sciences, Blantyre, Malawi
| | - Allan Zuza
- Malawi Liverpool Wellcome Programme, Kamuzu University of Health Sciences, Blantyre, Malawi
| | - Sithembile Bilima
- Malawi Liverpool Wellcome Programme, Kamuzu University of Health Sciences, Blantyre, Malawi
| | | | - Patrick Musicha
- Department of Clinical Sciences, Liverpool School of Tropical Medicine, Pembroke PlaceLiverpool, L3 5QA, UK
- Malawi Liverpool Wellcome Programme, Kamuzu University of Health Sciences, Blantyre, Malawi
| | | | - Edith Tewesa
- Queen Elizabeth Central Hospital, Blantyre, Malawi
| | - Fabrice E Graf
- Department of Clinical Sciences, Liverpool School of Tropical Medicine, Pembroke PlaceLiverpool, L3 5QA, UK
| | - Rebecca Lester
- Malawi Liverpool Wellcome Programme, Kamuzu University of Health Sciences, Blantyre, Malawi
- Division of Infection & Immunity, University College London, London, UK
| | - Samantha Lissauer
- Malawi Liverpool Wellcome Programme, Kamuzu University of Health Sciences, Blantyre, Malawi
- Department of Clinical Infection, Microbiology and Immunology, University of Liverpool, Liverpool, UK
| | - Jennifer Cornick
- Malawi Liverpool Wellcome Programme, Kamuzu University of Health Sciences, Blantyre, Malawi
- Department of Clinical Infection, Microbiology and Immunology, University of Liverpool, Liverpool, UK
| | - Joseph M Lewis
- Department of Clinical Sciences, Liverpool School of Tropical Medicine, Pembroke PlaceLiverpool, L3 5QA, UK
- Malawi Liverpool Wellcome Programme, Kamuzu University of Health Sciences, Blantyre, Malawi
- Department of Clinical Infection, Microbiology and Immunology, University of Liverpool, Liverpool, UK
| | - Kondwani Kawaza
- Malawi Liverpool Wellcome Programme, Kamuzu University of Health Sciences, Blantyre, Malawi
- Kamuzu University of Health Sciences, Blantyre, Malawi
| | - Nicholas R Thomson
- Parasites and Microbes Program, Wellcome Sanger Institute, Hinxton, UK
- London School of Hygiene and Tropical Medicine, London, UK
| | - Nicholas A Feasey
- Department of Clinical Sciences, Liverpool School of Tropical Medicine, Pembroke PlaceLiverpool, L3 5QA, UK.
- Malawi Liverpool Wellcome Programme, Kamuzu University of Health Sciences, Blantyre, Malawi.
- School of Medicine, St Andrews University, St Andrews, UK.
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Marin MG, Wippel C, Quinones-Olvera N, Behruznia M, Jeffrey BM, Harris M, Mann BC, Rosenthal A, Jacobson KR, Warren RM, Li H, Meehan CJ, Farhat MR. Analysis of the limited M. tuberculosis accessory genome reveals potential pitfalls of pan-genome analysis approaches. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.03.21.586149. [PMID: 38585972 PMCID: PMC10996470 DOI: 10.1101/2024.03.21.586149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Pan-genome analysis is a fundamental tool for studying bacterial genome evolution; however, the variety of methods used to define and measure the pan-genome poses challenges to the interpretation and reliability of results. To quantify sources of bias and error related to common pan-genome analysis approaches, we evaluated different approaches applied to curated collection of 151 Mycobacterium tuberculosis ( Mtb ) isolates. Mtb is characterized by its clonal evolution, absence of horizontal gene transfer, and limited accessory genome, making it an ideal test case for this study. Using a state-of-the-art graph-genome approach, we found that a majority of the structural variation observed in Mtb originates from rearrangement, deletion, and duplication of redundant nucleotide sequences. In contrast, we found that pan-genome analyses that focus on comparison of coding sequences (at the amino acid level) can yield surprisingly variable results, driven by differences in assembly quality and the softwares used. Upon closer inspection, we found that coding sequence annotation discrepancies were a major contributor to inflated Mtb accessory genome estimates. To address this, we developed panqc, a software that detects annotation discrepancies and collapses nucleotide redundancy in pan-genome estimates. When applied to Mtb and E. coli pan-genomes, panqc exposed distinct biases influenced by the genomic diversity of the population studied. Our findings underscore the need for careful methodological selection and quality control to accurately map the evolutionary dynamics of a bacterial species.
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35
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Urbanowicz P, Izdebski R, Biedrzycka M, Gniadkowski M. VIM-type metallo-β-lactamase (MBL)-encoding genomic islands in Pseudomonas spp. in Poland: predominance of clc-like integrative and conjugative elements (ICEs). J Antimicrob Chemother 2024; 79:1030-1037. [PMID: 38488311 DOI: 10.1093/jac/dkae068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 02/23/2024] [Indexed: 05/03/2024] Open
Abstract
OBJECTIVES To characterize VIM-type metallo-β-lactamase (MBL)-encoding genomic islands (GIs) in Pseudomonas aeruginosa and P. putida group isolates from Polish hospitals from 2001-2015/16. METHODS Twelve P. aeruginosa and 20 P. putida group isolates producing VIM-like MBLs were selected from a large collection of these based on epidemiological and typing data. The organisms represented all major epidemic genotypes of these species spread in Poland with chromosomally located blaVIM gene-carrying integrons. The previously determined short-read sequences were complemented by long-read sequencing in this study. The comparative structural analysis of the GIs used a variety of bioinformatic tools. RESULTS Thirty different GIs with blaVIM integrons were identified in the 32 isolates, of which 24 GIs from 26 isolates were integrative and conjugative elements (ICEs) of the clc family. These in turn were dominated by 21 variants of the GI2/ICE6441 subfamily with a total of 19 VIM integrons, each inserted in the same position within the ICE's Tn21-like transposon Tn4380. The three other ICEs formed a novel ICE6705 subfamily, lacking Tn4380 and having different VIM integrons located in another site of the elements. The remaining six non-ICE GIs represented miscellaneous structures. The presence of various integrons in the same ICE sublineage, and of the same integron in different GIs, indicated circulation and recombination of the integron-carrying genetic platforms across Pseudomonas species/genotypes. CONCLUSIONS Despite the general diversity of the blaVIM-carrying GIs in Pseudomonas spp. in Poland, a clear predominance of broadly spread and rapidly evolving clc-type ICEs was documented, confirming their significant role in antimicrobial resistance epidemiology.
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Affiliation(s)
- P Urbanowicz
- Department of Molecular Microbiology, National Medicines Institute, Chełmska 30/34, Warsaw 00-725, Poland
| | - R Izdebski
- Department of Molecular Microbiology, National Medicines Institute, Chełmska 30/34, Warsaw 00-725, Poland
| | - M Biedrzycka
- Department of Molecular Microbiology, National Medicines Institute, Chełmska 30/34, Warsaw 00-725, Poland
| | - M Gniadkowski
- Department of Molecular Microbiology, National Medicines Institute, Chełmska 30/34, Warsaw 00-725, Poland
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36
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Cook R, Crisci MA, Pye HV, Telatin A, Adriaenssens EM, Santini JM. Decoding huge phage diversity: a taxonomic classification of Lak megaphages. J Gen Virol 2024; 105:001997. [PMID: 38814706 PMCID: PMC11165621 DOI: 10.1099/jgv.0.001997] [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: 02/01/2024] [Accepted: 05/21/2024] [Indexed: 05/31/2024] Open
Abstract
High-throughput sequencing for uncultivated viruses has accelerated the understanding of global viral diversity and uncovered viral genomes substantially larger than any that have so far been cultured. Notably, the Lak phages are an enigmatic group of viruses that present some of the largest known phage genomes identified in human and animal microbiomes, and are dissimilar to any cultivated viruses. Despite the wealth of viral diversity that exists within sequencing datasets, uncultivated viruses have rarely been used for taxonomic classification. We investigated the evolutionary relationships of 23 Lak phages and propose a taxonomy for their classification. Predicted protein analysis revealed the Lak phages formed a deeply branching monophyletic clade within the class Caudoviricetes which contained no other phage genomes. One of the interesting features of this clade is that all current members are characterised by an alternative genetic code. We propose the Lak phages belong to a new order, the 'Grandevirales'. Protein and nucleotide-based analyses support the creation of two families, three sub-families, and four genera within the order 'Grandevirales'. We anticipate that the proposed taxonomy of Lak megaphages will simplify the future classification of related viral genomes as they are uncovered. Continued efforts to classify divergent viruses are crucial to aid common analyses of viral genomes and metagenomes.
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Affiliation(s)
- Ryan Cook
- Quadram Institute Bioscience, Norwich Research Park, Norwich, UK
| | - Marco A. Crisci
- Department of Structural and Molecular Biology, Division of Biosciences, UCL, London, UK
| | - Hannah V. Pye
- Quadram Institute Bioscience, Norwich Research Park, Norwich, UK
| | - Andrea Telatin
- Quadram Institute Bioscience, Norwich Research Park, Norwich, UK
| | | | - Joanne M. Santini
- Department of Structural and Molecular Biology, Division of Biosciences, UCL, London, UK
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37
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Heng H, Yang X, Zhang H, Sun R, Ye L, Li J, Chan EWC, Zhang R, Chen S. Early detection of OXA-232-producing Klebsiella pneumoniae in China predating its global emergence. Microbiol Res 2024; 282:127672. [PMID: 38447456 DOI: 10.1016/j.micres.2024.127672] [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: 01/11/2024] [Revised: 02/29/2024] [Accepted: 02/29/2024] [Indexed: 03/08/2024]
Abstract
Antibiotic resistance is a global health issue, with Klebsiella pneumoniae (KP) posing a particular threat due to its ability to acquire resistance to multiple drug classes rapidly. OXA-232 is a carbapenemase that confers resistance to carbapenems, a class of antibiotics often used as a last resort for treating severe bacterial infections. The study reports the earliest known identification of six OXA-232-producing KP strains that were isolated in Zhejiang, China, in 2008 and 2009 within a hospital, two years prior to the first reported identification of OXA-232 in France. The four KP strains carry the OXA-232 gene and exhibit hypervirulent loci, suggesting a broader temporal and geographical spread and integration of this resistance and virulence than previously recognized with implications for public health. Global analysis of all OXA-232-bearing KP strains revealed that OXA-232-encoding plasmids are conservative, while the strains were very diverse suggesting the plasmid mediated transmission of this carbapenemase genes. Importantly, a large proportion of the OXA-232-bearing KP strains also carried virulence plasmids, in particular the recent emergence of ST15 type of KP that carried both OXA-232-encoding plasmids and hypervirulent (hv) plasmids in China since 2019, highlighting the importance of the emergence of this type of KP strains in clinical setting. The early detection and investigations of OXA-232 in these strains warrants the retrospective studies to uncover the true timeline of antibiotic resistance spread, which could provide valuable insights for shaping future strategies to tackle the global health crisis.
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Affiliation(s)
- Heng Heng
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong Special Administrative Region; State Key Lab of Chemical Biology and Drug Discovery and the Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Kowloon, Hong Kong Special Administrative Region
| | - Xuemei Yang
- State Key Lab of Chemical Biology and Drug Discovery and the Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Kowloon, Hong Kong Special Administrative Region; Shenzhen Key Laboratory of Food Biological Safety Control, The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
| | - Haoshuai Zhang
- State Key Lab of Chemical Biology and Drug Discovery and the Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Kowloon, Hong Kong Special Administrative Region; Shenzhen Key Laboratory of Food Biological Safety Control, The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
| | - Ruanyang Sun
- State Key Lab of Chemical Biology and Drug Discovery and the Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Kowloon, Hong Kong Special Administrative Region; Shenzhen Key Laboratory of Food Biological Safety Control, The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
| | - Lianwei Ye
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong Special Administrative Region; State Key Lab of Chemical Biology and Drug Discovery and the Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Kowloon, Hong Kong Special Administrative Region
| | - Jun Li
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong Special Administrative Region
| | - Edward Wai-Chi Chan
- State Key Lab of Chemical Biology and Drug Discovery and the Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Kowloon, Hong Kong Special Administrative Region
| | - Rong Zhang
- Department of Clinical Laboratory, Second Affiliated Hospital of Zhejiang University, School of Medicine, Hangzhou, Zhejiang, China
| | - Sheng Chen
- State Key Lab of Chemical Biology and Drug Discovery and the Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Kowloon, Hong Kong Special Administrative Region; Shenzhen Key Laboratory of Food Biological Safety Control, The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China.
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38
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Nair S, Barker CR, Bird M, Greig DR, Collins C, Painset A, Chattaway M, Pickard D, Larkin L, Gharbia S, Didelot X, Ribeca P. Presence of phage-plasmids in multiple serovars of Salmonella enterica. Microb Genom 2024; 10:001247. [PMID: 38717818 PMCID: PMC11165635 DOI: 10.1099/mgen.0.001247] [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: 01/05/2024] [Accepted: 04/17/2024] [Indexed: 06/13/2024] Open
Abstract
Evidence is accumulating in the literature that the horizontal spread of antimicrobial resistance (AMR) genes mediated by bacteriophages and bacteriophage-like plasmid (phage-plasmid) elements is much more common than previously envisioned. For instance, we recently identified and characterized a circular P1-like phage-plasmid harbouring a bla CTX-M-15 gene conferring extended-spectrum beta-lactamase (ESBL) resistance in Salmonella enterica serovar Typhi. As the prevalence and epidemiological relevance of such mechanisms has never been systematically assessed in Enterobacterales, in this study we carried out a follow-up retrospective analysis of UK Salmonella isolates previously sequenced as part of routine surveillance protocols between 2016 and 2021. Using a high-throughput bioinformatics pipeline we screened 47 784 isolates for the presence of the P1 lytic replication gene repL, identifying 226 positive isolates from 25 serovars and demonstrating that phage-plasmid elements are more frequent than previously thought. The affinity for phage-plasmids appears highly serovar-dependent, with several serovars being more likely hosts than others; most of the positive isolates (170/226) belonged to S. Typhimurium ST34 and ST19. The phage-plasmids ranged between 85.8 and 98.2 kb in size, with an average length of 92.1 kb; detailed analysis indicated a high amount of diversity in gene content and genomic architecture. In total, 132 phage-plasmids had the p0111 plasmid replication type, and 94 the IncY type; phylogenetic analysis indicated that both horizontal and vertical gene transmission mechanisms are likely to be involved in phage-plasmid propagation. Finally, phage-plasmids were present in isolates that were resistant and non-resistant to antimicrobials. In addition to providing a first comprehensive view of the presence of phage-plasmids in Salmonella, our work highlights the need for a better surveillance and understanding of phage-plasmids as AMR carriers, especially through their characterization with long-read sequencing.
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Affiliation(s)
| | - Clare R. Barker
- UK Health Security Agency, London, UK
- NIHR Health Protection Research Unit in Genomics and Enabling Data, University of Warwick, Warwick, UK
| | - Matthew Bird
- UK Health Security Agency, London, UK
- NIHR Health Protection Research Unit in Healthcare Associated Infections and Antimicrobial Resistance, University of Oxford, Oxford, UK
| | - David R. Greig
- UK Health Security Agency, London, UK
- NIHR Health Protection Research Unit in Gastrointestinal Infections, University of Liverpool, Liverpool, UK
- Division of Infection and Immunity, The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, UK
| | - Caitlin Collins
- UK Health Security Agency, London, UK
- NIHR Health Protection Research Unit in Genomics and Enabling Data, University of Warwick, Warwick, UK
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | | | - Marie Chattaway
- UK Health Security Agency, London, UK
- NIHR Health Protection Research Unit in Genomics and Enabling Data, University of Warwick, Warwick, UK
| | - Derek Pickard
- The Cambridge Institute for Therapeutic Immunology and Infectious Disease (CITIID), University of Cambridge, Cambridge, UK
| | | | - Saheer Gharbia
- UK Health Security Agency, London, UK
- NIHR Health Protection Research Unit in Genomics and Enabling Data, University of Warwick, Warwick, UK
- NIHR Health Protection Research Unit in Healthcare Associated Infections and Antimicrobial Resistance, University of Oxford, Oxford, UK
| | - Xavier Didelot
- NIHR Health Protection Research Unit in Genomics and Enabling Data, University of Warwick, Warwick, UK
- NIHR Health Protection Research Unit in Gastrointestinal Infections, University of Liverpool, Liverpool, UK
- School of Public Health and Department of Statistics, University of Warwick, Warwick, UK
| | - Paolo Ribeca
- UK Health Security Agency, London, UK
- NIHR Health Protection Research Unit in Genomics and Enabling Data, University of Warwick, Warwick, UK
- NIHR Health Protection Research Unit in Gastrointestinal Infections, University of Liverpool, Liverpool, UK
- Biomathematics and Statistics Scotland, The James Hutton Institute, Edinburgh, UK
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Oyelade AA, Ikhimiukor OO, Nwadike BI, Fagade OE, Adelowo OO. Assessing the risk of exposure to antimicrobial resistance at public beaches: Genome-based insights into the resistomes, mobilomes and virulomes of beta-lactams resistant Enterobacteriaceae from recreational beaches in Lagos, Nigeria. Int J Hyg Environ Health 2024; 258:114347. [PMID: 38492327 DOI: 10.1016/j.ijheh.2024.114347] [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: 12/13/2023] [Revised: 02/18/2024] [Accepted: 03/02/2024] [Indexed: 03/18/2024]
Abstract
The role of recreational water use in the acquisition and transmission of antimicrobial resistance (AMR) is under-explored in low- and middle-income countries (LMICs). We used whole genome sequence analysis to provide insights into the resistomes, mobilomes and virulomes of 14 beta-lactams resistant Enterobacterales isolated from water and wet-sand at four recreational beaches in Lagos, Nigeria. Carriage of multiple beta-lactamase genes was detected in all isolates except two, including six isolates carrying blaNDM-1. Most detected antibiotic resistance genes (ARGs) were located within a diverse landscape of plasmids, insertion sequences and transposons including the presence of ISKpn14 upstream of blaNDM-1 in a first report in Africa. Virulence genes involved in adhesion and motility as well as secretion systems are particularly abundant in the genomes of the isolates. Our results confirmed the four beaches are contaminated with bacteria carrying clinically relevant ARGs associated with mobile genetic elements (MGE) which could promote the transmission of ARGs at the recreational water-human interface.
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Affiliation(s)
- Abolade A Oyelade
- New Jersey Department of Health, Public Health and Environmental Laboratories, New Jersey, USA
| | - Odion O Ikhimiukor
- Department of Biological Sciences, University at Albany, State University of New York, New York, USA
| | - Blessing I Nwadike
- Environmental Microbiology and Biotechnology Laboratory, Department of Microbiology, University of Ibadan, Ibadan, Nigeria
| | - Obasola E Fagade
- Environmental Microbiology and Biotechnology Laboratory, Department of Microbiology, University of Ibadan, Ibadan, Nigeria
| | - Olawale O Adelowo
- Environmental Microbiology and Biotechnology Laboratory, Department of Microbiology, University of Ibadan, Ibadan, Nigeria.
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40
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de Oliveira LMA, Simões LC, Crestani C, Costa NS, Pantoja JCDF, Rabello RF, Teixeira LM, Khan UB, Bentley S, Jamrozy D, Pinto TDCA, Zadoks RN. Long-Term Co-Circulation of Host-Specialist and Host-Generalist Lineages of Group B Streptococcus in Brazilian Dairy Cattle with Heterogeneous Antimicrobial Resistance Profiles. Antibiotics (Basel) 2024; 13:389. [PMID: 38786118 PMCID: PMC11117364 DOI: 10.3390/antibiotics13050389] [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: 04/01/2024] [Revised: 04/20/2024] [Accepted: 04/23/2024] [Indexed: 05/25/2024] Open
Abstract
Group B Streptococcus (GBS) is a major cause of contagious bovine mastitis (CBM) in Brazil. The GBS population is composed of host-generalist and host-specialist lineages, which may differ in antimicrobial resistance (AMR) and zoonotic potential, and the surveillance of bovine GBS is crucial to developing effective CBM control and prevention measures. Here, we investigated bovine GBS isolates (n = 156) collected in Brazil between 1987 and 2021 using phenotypic testing and whole-genome sequencing to uncover the molecular epidemiology of bovine GBS. Clonal complex (CC) 61/67 was the predominant clade in the 20th century; however, it was replaced by CC91, with which it shares a most common recent ancestor, in the 21st century, despite the higher prevalence of AMR in CC61/67 than in CC91, and high selection pressure for AMR from indiscriminate antimicrobial use in the Brazilian dairy industry. CC103 also emerged as a dominant CC in the 21st century, and a considerable proportion of herds had two or more GBS strains, suggesting poor biosecurity and within-herd evolution due to the chronic nature of CBM problems. The majority of bovine GBS belonged to serotype Ia or III, which was strongly correlated with CCs. Ninety-three isolates were resistant to tetracycline (≥8 μg/mL; tetO = 57, tetM = 34 or both = 2) and forty-four were resistant to erythromycin (2.0 to >4 μg/mL; ermA = 1, ermB = 38, mechanism unidentified n = 5). Only three isolates were non-susceptible to penicillin (≥8.0 μg/mL), providing opportunities for improved antimicrobial stewardship through the use of narrow-spectrum antimicrobials for the treatment of dairy cattle. The common bovine GBS clades detected in this study have rarely been reported in humans, suggesting limited risk of interspecies transmission of GBS in Brazil. This study provides new data to support improvements to CBM and AMR control, bovine GBS vaccine design, and the management of public health risks posed by bovine GBS in Brazil.
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Affiliation(s)
- Laura Maria Andrade de Oliveira
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (L.C.S.); (N.S.C.); (L.M.T.); (T.d.C.A.P.)
| | - Leandro Correia Simões
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (L.C.S.); (N.S.C.); (L.M.T.); (T.d.C.A.P.)
| | | | - Natália Silva Costa
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (L.C.S.); (N.S.C.); (L.M.T.); (T.d.C.A.P.)
| | | | | | - Lucia Martins Teixeira
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (L.C.S.); (N.S.C.); (L.M.T.); (T.d.C.A.P.)
| | - Uzma Basit Khan
- Wellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK; (U.B.K.); (S.B.); (D.J.)
| | - Stephen Bentley
- Wellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK; (U.B.K.); (S.B.); (D.J.)
| | - Dorota Jamrozy
- Wellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK; (U.B.K.); (S.B.); (D.J.)
| | - Tatiana de Castro Abreu Pinto
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (L.C.S.); (N.S.C.); (L.M.T.); (T.d.C.A.P.)
| | - Ruth N. Zadoks
- Sydney School of Veterinary Science, Faculty of Science, University of Sydney, Camden, NSW 2570, Australia
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Xie O, Zachreson C, Tonkin-Hill G, Price DJ, Lacey JA, Morris JM, McDonald MI, Bowen AC, Giffard PM, Currie BJ, Carapetis JR, Holt DC, Bentley SD, Davies MR, Tong SYC. Overlapping Streptococcus pyogenes and Streptococcus dysgalactiae subspecies equisimilis household transmission and mobile genetic element exchange. Nat Commun 2024; 15:3477. [PMID: 38658529 PMCID: PMC11043366 DOI: 10.1038/s41467-024-47816-1] [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: 01/12/2024] [Accepted: 04/12/2024] [Indexed: 04/26/2024] Open
Abstract
Streptococcus dysgalactiae subspecies equisimilis (SDSE) and Streptococcus pyogenes share skin and throat niches with extensive genomic homology and horizontal gene transfer (HGT) possibly underlying shared disease phenotypes. It is unknown if cross-species transmission interaction occurs. Here, we conduct a genomic analysis of a longitudinal household survey in remote Australian First Nations communities for patterns of cross-species transmission interaction and HGT. Collected from 4547 person-consultations, we analyse 294 SDSE and 315 S. pyogenes genomes. We find SDSE and S. pyogenes transmission intersects extensively among households and show that patterns of co-occurrence and transmission links are consistent with independent transmission without inter-species interference. We identify at least one of three near-identical cross-species mobile genetic elements (MGEs) carrying antimicrobial resistance or streptodornase virulence genes in 55 (19%) SDSE and 23 (7%) S. pyogenes isolates. These findings demonstrate co-circulation of both pathogens and HGT in communities with a high burden of streptococcal disease, supporting a need to integrate SDSE and S. pyogenes surveillance and control efforts.
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Affiliation(s)
- Ouli Xie
- Department of Infectious Diseases, University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, Australia
- Monash Infectious Diseases, Monash Health, Melbourne, VIC, Australia
| | - Cameron Zachreson
- School of Computing and Information Systems, University of Melbourne, Melbourne, VIC, Australia
| | | | - David J Price
- Department of Infectious Diseases, University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, Australia
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, VIC, Australia
| | - Jake A Lacey
- Department of Infectious Diseases, University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, Australia
- Department of Microbiology and Immunology, University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, Australia
| | - Jacqueline M Morris
- Department of Microbiology and Immunology, University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, Australia
| | - Malcolm I McDonald
- Division of Tropical Health and Medicine, James Cook University, Townsville, QLD, Australia
| | - Asha C Bowen
- Wesfarmers Centre for Vaccines and Infectious Diseases, Telethon Kids Institute, University of Western Australia and Perth Children's Hospital, Perth, WA, Australia
| | - Philip M Giffard
- Global and Tropical Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, NT, Australia
- Faculty of Health, Charles Darwin University, Darwin, NT, Australia
| | - Bart J Currie
- Global and Tropical Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, NT, Australia
- Infectious Diseases Department, Royal Darwin Hospital, Darwin, NT, Australia
| | - Jonathan R Carapetis
- Wesfarmers Centre for Vaccines and Infectious Diseases, Telethon Kids Institute, University of Western Australia and Perth Children's Hospital, Perth, WA, Australia
| | - Deborah C Holt
- Global and Tropical Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, NT, Australia
| | | | - Mark R Davies
- Department of Microbiology and Immunology, University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, Australia
| | - Steven Y C Tong
- Department of Infectious Diseases, University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, Australia.
- Victorian Infectious Diseases Service, The Royal Melbourne Hospital at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, Australia.
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Piper KR, Ikhimiukor OO, Souza SSR, Garcia-Aroca T, Andam CP. Evolutionary dynamics of the accessory genomes of Staphylococcus aureus. mSphere 2024; 9:e0075123. [PMID: 38501935 PMCID: PMC11036810 DOI: 10.1128/msphere.00751-23] [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: 12/01/2023] [Accepted: 02/24/2024] [Indexed: 03/20/2024] Open
Abstract
Staphylococcus aureus is a ubiquitous commensal and opportunistic bacterial pathogen that can cause a wide gamut of infections, which are exacerbated by the presence of multidrug-resistant and methicillin-resistant S. aureus. S. aureus is genetically heterogeneous and consists of numerous distinct lineages. Using 558 complete genomes of S. aureus, we aim to determine how the accessory genome content among phylogenetic lineages of S. aureus is structured and has evolved. Bayesian hierarchical clustering identified 10 sequence clusters, of which seven contained major sequence types (ST 1, 5, 8, 30, 59, 239, and 398). The seven sequence clusters differed in their accessory gene content, including genes associated with antimicrobial resistance and virulence. Focusing on the two largest clusters, BAPS8 and BAPS10, and each consisting mostly of ST5 and ST8, respectively, we found that the structure and connected components in the co-occurrence networks of accessory genomes varied between them. These differences are explained, in part, by the variation in the rates at which the two sequence clusters gained and lost accessory genes, with the highest rate of gene accumulation occurring recently in their evolutionary histories. We also identified a divergent group within BAPS10 that has experienced high gene gain and loss early in its history. Together, our results show highly variable and dynamic accessory genomes in S. aureus that are structured by the history of the specific lineages that carry them.IMPORTANCEStaphylococcus aureus is an opportunistic, multi-host pathogen that can cause a variety of benign and life-threatening infections. Our results revealed considerable differences in the structure and evolution of the accessory genomes of major lineages within S. aureus. Such genomic variation within a species can have important implications on disease epidemiology, pathogenesis of infection, and interactions with the vertebrate host. Our findings provide important insights into the underlying genetic basis for the success of S. aureus as a highly adaptable and resistant pathogen, which will inform current efforts to control and treat staphylococcal diseases.
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Affiliation(s)
- Kathryn R. Piper
- Department of Biological Sciences, University at Albany, State University of New York, Albany, New York, USA
| | - Odion O. Ikhimiukor
- Department of Biological Sciences, University at Albany, State University of New York, Albany, New York, USA
| | - Stephanie S. R. Souza
- Department of Biological Sciences, University at Albany, State University of New York, Albany, New York, USA
| | - Teddy Garcia-Aroca
- Department of Biological Sciences, University at Albany, State University of New York, Albany, New York, USA
- Department of Plant Pathology, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Cheryl P. Andam
- Department of Biological Sciences, University at Albany, State University of New York, Albany, New York, USA
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McGalliard R, Muhamadali H, AlMasoud N, Haldenby S, Romero-Soriano V, Allman E, Xu Y, Roberts AP, Paterson S, Carrol ED, Goodacre R. Bacterial discrimination by Fourier transform infrared spectroscopy, MALDI-mass spectrometry and whole-genome sequencing. Future Microbiol 2024. [PMID: 38652264 DOI: 10.2217/fmb-2024-0043] [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] [Indexed: 04/25/2024] Open
Abstract
Aim: Proof-of-concept study, highlighting the clinical diagnostic ability of FT-IR compared with MALDI-TOF MS, combined with WGS. Materials & methods: 104 pathogenic isolates of Neisseria meningitidis, Streptococcus pneumoniae, Streptococcus pyogenes and Staphylococcus aureus were analyzed. Results: Overall prediction accuracy was 99.6% in FT-IR and 95.8% in MALDI-TOF-MS. Analysis of N. meningitidis serogroups was superior in FT-IR compared with MALDI-TOF-MS. Phylogenetic relationship of S. pyogenes was similar by FT-IR and WGS, but not S. aureus or S. pneumoniae. Clinical severity was associated with the zinc ABC transporter and DNA repair genes in S. pneumoniae and cell wall proteins (biofilm formation, antibiotic and complement permeability) in S. aureus via WGS. Conclusion: FT-IR warrants further clinical evaluation as a promising diagnostic tool.
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Affiliation(s)
- Rachel McGalliard
- Department of Clinical Infection, Microbiology & Immunology, University of Liverpool Institute of Infection, Veterinary & Ecological Sciences, Ronald Ross Building, 8 West Derby Street, Liverpool, UK
- Department of Infectious Diseases, Alder Hey Children's NHS Foundation Trust, Eaton Road, Liverpool, UK
| | - Howbeer Muhamadali
- School of Chemistry, Manchester Institute of Biotechnology, University of Manchester, Manchester, UK
- center for Metabolomics Research, Department of Biochemistry, Cell & Systems Biology, Institute of Systems, Molecular & Integrative Biology, University of Liverpool, Biosciences Building, Crown Street, Liverpool, UK
| | - Najla AlMasoud
- College of Science, Princess Nourah Bint Abdulrahman University, Department of Chemistry, Riyadh, 11671, Saudi Arabia
| | - Sam Haldenby
- center for Genomic Research, University of Liverpool, Mersey Bio Building, Crown Street, Liverpool, UK
| | - Valeria Romero-Soriano
- center for Genomic Research, University of Liverpool, Mersey Bio Building, Crown Street, Liverpool, UK
| | - Ellie Allman
- Department of Tropical Disease Biology, Liverpool School of Tropical Medicine, Liverpool, UK
| | - Yun Xu
- School of Chemistry, Manchester Institute of Biotechnology, University of Manchester, Manchester, UK
- center for Metabolomics Research, Department of Biochemistry, Cell & Systems Biology, Institute of Systems, Molecular & Integrative Biology, University of Liverpool, Biosciences Building, Crown Street, Liverpool, UK
| | - Adam P Roberts
- Department of Tropical Disease Biology, Liverpool School of Tropical Medicine, Liverpool, UK
| | - Steve Paterson
- center for Genomic Research, University of Liverpool, Mersey Bio Building, Crown Street, Liverpool, UK
| | - Enitan D Carrol
- Department of Clinical Infection, Microbiology & Immunology, University of Liverpool Institute of Infection, Veterinary & Ecological Sciences, Ronald Ross Building, 8 West Derby Street, Liverpool, UK
- Department of Infectious Diseases, Alder Hey Children's NHS Foundation Trust, Eaton Road, Liverpool, UK
| | - Royston Goodacre
- School of Chemistry, Manchester Institute of Biotechnology, University of Manchester, Manchester, UK
- center for Metabolomics Research, Department of Biochemistry, Cell & Systems Biology, Institute of Systems, Molecular & Integrative Biology, University of Liverpool, Biosciences Building, Crown Street, Liverpool, UK
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44
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Hala S, Malaikah M, Huang J, Bahitham W, Fallatah O, Zakri S, Antony CP, Alshehri M, Ghazzali RN, Ben-Rached F, Alsahafi A, Alsaedi A, AlAhmadi G, Kaaki M, Alazmi M, AlhajHussein B, Yaseen M, Zowawi HM, Alghoribi MF, Althaqafi AO, Al-Amri A, Moradigaravand D, Pain A. The emergence of highly resistant and hypervirulent Klebsiella pneumoniae CC14 clone in a tertiary hospital over 8 years. Genome Med 2024; 16:58. [PMID: 38637822 PMCID: PMC11025284 DOI: 10.1186/s13073-024-01332-5] [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: 10/03/2023] [Accepted: 04/08/2024] [Indexed: 04/20/2024] Open
Abstract
BACKGROUND Klebsiella pneumoniae is a major bacterial and opportunistic human pathogen, increasingly recognized as a healthcare burden globally. The convergence of resistance and virulence in K. pneumoniae strains has led to the formation of hypervirulent and multidrug-resistant strains with dual risk, limiting treatment options. K. pneumoniae clones are known to emerge locally and spread globally. Therefore, an understanding of the dynamics and evolution of the emerging strains in hospitals is warranted to prevent future outbreaks. METHODS In this study, we conducted an in-depth genomic analysis on a large-scale collection of 328 multidrug-resistant (MDR) K. pneumoniae strains recovered from 239 patients from a single major hospital in the western coastal city of Jeddah in Saudi Arabia from 2014 through 2022. We employed a broad range of phylogenetic and phylodynamic methods to understand the evolution of the predominant clones on epidemiological time scales, virulence and resistance determinants, and their dynamics. We also integrated the genomic data with detailed electronic health record (EHR) data for the patients to understand the clinical implications of the resistance and virulence of different strains. RESULTS We discovered a diverse population underlying the infections, with most strains belonging to Clonal Complex 14 (CC14) exhibiting dominance. Specifically, we observed the emergence and continuous expansion of strains belonging to the dominant ST2096 in the CC14 clade across hospital wards in recent years. These strains acquired resistance mutations against colistin and extended spectrum β-lactamase (ESBL) and carbapenemase genes, namely blaOXA-48 and blaOXA-232, located on three distinct plasmids, on epidemiological time scales. Strains of ST2096 exhibited a high virulence level with the presence of the siderophore aerobactin (iuc) locus situated on the same mosaic plasmid as the ESBL gene. Integration of ST2096 with EHR data confirmed the significant link between colonization by ST2096 and the diagnosis of sepsis and elevated in-hospital mortality (p-value < 0.05). CONCLUSIONS Overall, these results demonstrate the clinical significance of ST2096 clones and illustrate the rapid evolution of an emerging hypervirulent and MDR K. pneumoniae in a clinical setting.
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Affiliation(s)
- Sharif Hala
- Pathogen Genomics Laboratory, Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, 23955-6900, Jeddah, Makkah, Saudi Arabia
- King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
- Infectious Disease Research Department, King Abdullah International Medical Research Centre, Jeddah, Saudi Arabia
- Ministry of National Guard Health Affairs, Riyadh, Western Region, Saudi Arabia
| | - Mohammed Malaikah
- Pathogen Genomics Laboratory, Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, 23955-6900, Jeddah, Makkah, Saudi Arabia
- Laboratory of Infectious Disease Epidemiology, Biological and Environmental Science and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Jiayi Huang
- Laboratory of Infectious Disease Epidemiology, Biological and Environmental Science and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
- KAUST Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Wesam Bahitham
- King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
- Infectious Disease Research Department, King Abdullah International Medical Research Centre, Jeddah, Saudi Arabia
- Ministry of National Guard Health Affairs, Riyadh, Western Region, Saudi Arabia
| | - Omniya Fallatah
- King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
- Infectious Disease Research Department, King Abdullah International Medical Research Centre, Jeddah, Saudi Arabia
- Ministry of National Guard Health Affairs, Riyadh, Western Region, Saudi Arabia
| | - Samer Zakri
- King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
- Infectious Disease Research Department, King Abdullah International Medical Research Centre, Jeddah, Saudi Arabia
- Ministry of National Guard Health Affairs, Riyadh, Western Region, Saudi Arabia
| | - Chakkiath Paul Antony
- Pathogen Genomics Laboratory, Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, 23955-6900, Jeddah, Makkah, Saudi Arabia
- International Institute for Zoonosis Control, Hokkaido University, Sapporo, 001-0020, Japan
| | - Mohammed Alshehri
- King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
- Infectious Disease Research Department, King Abdullah International Medical Research Centre, Jeddah, Saudi Arabia
- Ministry of National Guard Health Affairs, Riyadh, Western Region, Saudi Arabia
| | - Raeece Naeem Ghazzali
- Pathogen Genomics Laboratory, Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, 23955-6900, Jeddah, Makkah, Saudi Arabia
| | - Fathia Ben-Rached
- Pathogen Genomics Laboratory, Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, 23955-6900, Jeddah, Makkah, Saudi Arabia
| | - Abdullah Alsahafi
- King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
- Infectious Disease Research Department, King Abdullah International Medical Research Centre, Jeddah, Saudi Arabia
- Ministry of National Guard Health Affairs, Riyadh, Western Region, Saudi Arabia
| | - Asim Alsaedi
- King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
- Infectious Disease Research Department, King Abdullah International Medical Research Centre, Jeddah, Saudi Arabia
- Ministry of National Guard Health Affairs, Riyadh, Western Region, Saudi Arabia
| | - Ghadeer AlAhmadi
- King Faisal Specialist Hospital and Research Centre, Jeddah, Saudi Arabia
| | - Mai Kaaki
- King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
- Infectious Disease Research Department, King Abdullah International Medical Research Centre, Jeddah, Saudi Arabia
- Ministry of National Guard Health Affairs, Riyadh, Western Region, Saudi Arabia
| | - Meshari Alazmi
- KAUST Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
- College of Computer Science and Engineering, University of Hail, Hail, Saudi Arabia
| | - Baraa AlhajHussein
- King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
- Infectious Disease Research Department, King Abdullah International Medical Research Centre, Jeddah, Saudi Arabia
- Ministry of National Guard Health Affairs, Riyadh, Western Region, Saudi Arabia
| | - Muhammad Yaseen
- King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
- Infectious Disease Research Department, King Abdullah International Medical Research Centre, Jeddah, Saudi Arabia
- Ministry of National Guard Health Affairs, Riyadh, Western Region, Saudi Arabia
| | - Hosam M Zowawi
- King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
- Infectious Disease Research Department, King Abdullah International Medical Research Centre, Jeddah, Saudi Arabia
- Ministry of National Guard Health Affairs, Riyadh, Western Region, Saudi Arabia
- The University of Queensland, UQ Centre for Clinical Research, Herston, QLD, Australia
| | - Majed F Alghoribi
- King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
- Infectious Disease Research Department, King Abdullah International Medical Research Centre, Jeddah, Saudi Arabia
- Ministry of National Guard Health Affairs, Riyadh, Western Region, Saudi Arabia
| | - Abdulhakeem O Althaqafi
- King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
- Infectious Disease Research Department, King Abdullah International Medical Research Centre, Jeddah, Saudi Arabia
- Ministry of National Guard Health Affairs, Riyadh, Western Region, Saudi Arabia
| | - Abdulfattah Al-Amri
- King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
- Infectious Disease Research Department, King Abdullah International Medical Research Centre, Jeddah, Saudi Arabia
- Ministry of National Guard Health Affairs, Riyadh, Western Region, Saudi Arabia
| | - Danesh Moradigaravand
- Laboratory of Infectious Disease Epidemiology, Biological and Environmental Science and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia.
- KAUST Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia.
| | - Arnab Pain
- Pathogen Genomics Laboratory, Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, 23955-6900, Jeddah, Makkah, Saudi Arabia.
- The University of Queensland, UQ Centre for Clinical Research, Herston, QLD, Australia.
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45
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Di Renzo L, De Angelis ME, Torresi M, Mariani G, Pizzurro F, Mincarelli LF, Esposito E, Oliviero M, Iaccarino D, Di Nocera F, Paduano G, Lucifora G, Cammà C, Ferri N, Pomilio F. Genomic Characterization of Listeria monocytogenes and Other Listeria Species Isolated from Sea Turtles. Microorganisms 2024; 12:817. [PMID: 38674761 PMCID: PMC11052188 DOI: 10.3390/microorganisms12040817] [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: 02/26/2024] [Revised: 04/08/2024] [Accepted: 04/11/2024] [Indexed: 04/28/2024] Open
Abstract
Listeria monocytogenes is a ubiquitous pathogen found both in the environment and food. It can cause listeriosis in a wide range of animals as well as in humans. Investigations on presence, spread and virulence are still limited to terrestrial and human environments. Embracing the One Health Approach, investigating the presence and spread of L. monocytogenes in marine ecosystems and among wildlife, would provide us with useful information for human health. This study investigated the presence of L. monocytogenes and Listeria spp. in two species of sea turtles common in the Mediterranean Sea (Caretta caretta and Chelonia mydas). A total of one hundred and sixty-four carcasses of sea turtles (C. caretta n = 161 and C. mydas n = 3) stranded along the Abruzzo, Molise, Campania, and Calabria coasts, were collected. Brain and fecal samples were taken, enriched, and cultured for the detection of Listeria spp. From the specimens collected, strains of L. monocytogenes (brain n = 1, brain and feces n = 1, multiorgan n = 1 and feces n = 1), L. innocua (feces n = 1 and brain n = 1), and L. ivanovii (brain n = 1) were isolated. Typical colonies were isolated for Whole Genome Sequencing (WGS). Virulence genes, disinfectants/metal resistance, and antimicrobial resistance were also investigated. L. monocytogenes, L. innocua, and L. ivanovii were detected in C. caretta, whilst only L. monocytogenes and L. innocua in C. mydas. Notable among the results is the lack of significant differences in gene distribution between human and sea turtle strains. Furthermore, potentially pathogenic strains of L. monocytogenes were found in sea turtles.
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Affiliation(s)
- Ludovica Di Renzo
- Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise “Giuseppe Caporale”, Via Campo Boario, 64100 Teramo, Italy; (L.D.R.); (M.T.); (G.M.); (F.P.); (L.F.M.); (C.C.); (N.F.); (F.P.)
- Centro Studi Cetacei, 65125 Pescara, Italy
| | - Maria Elisabetta De Angelis
- Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise “Giuseppe Caporale”, Via Campo Boario, 64100 Teramo, Italy; (L.D.R.); (M.T.); (G.M.); (F.P.); (L.F.M.); (C.C.); (N.F.); (F.P.)
- Faculty of Bioscience and Agro-Food and Environmental Technology, University of Teramo, 64100 Teramo, Italy
| | - Marina Torresi
- Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise “Giuseppe Caporale”, Via Campo Boario, 64100 Teramo, Italy; (L.D.R.); (M.T.); (G.M.); (F.P.); (L.F.M.); (C.C.); (N.F.); (F.P.)
| | - Giulia Mariani
- Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise “Giuseppe Caporale”, Via Campo Boario, 64100 Teramo, Italy; (L.D.R.); (M.T.); (G.M.); (F.P.); (L.F.M.); (C.C.); (N.F.); (F.P.)
- Faculty of Bioscience and Agro-Food and Environmental Technology, University of Teramo, 64100 Teramo, Italy
| | - Federica Pizzurro
- Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise “Giuseppe Caporale”, Via Campo Boario, 64100 Teramo, Italy; (L.D.R.); (M.T.); (G.M.); (F.P.); (L.F.M.); (C.C.); (N.F.); (F.P.)
| | - Luana Fiorella Mincarelli
- Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise “Giuseppe Caporale”, Via Campo Boario, 64100 Teramo, Italy; (L.D.R.); (M.T.); (G.M.); (F.P.); (L.F.M.); (C.C.); (N.F.); (F.P.)
| | - Emanuele Esposito
- Istituto Zooprofilattico Sperimentale del Mezzogiorno, 80055 Portici, Italy; (E.E.); (D.I.); (F.D.N.); (G.L.)
| | - Maria Oliviero
- Istituto Zooprofilattico Sperimentale del Mezzogiorno, 80055 Portici, Italy; (E.E.); (D.I.); (F.D.N.); (G.L.)
| | - Doriana Iaccarino
- Istituto Zooprofilattico Sperimentale del Mezzogiorno, 80055 Portici, Italy; (E.E.); (D.I.); (F.D.N.); (G.L.)
| | - Fabio Di Nocera
- Istituto Zooprofilattico Sperimentale del Mezzogiorno, 80055 Portici, Italy; (E.E.); (D.I.); (F.D.N.); (G.L.)
| | | | - Giuseppe Lucifora
- Istituto Zooprofilattico Sperimentale del Mezzogiorno, 80055 Portici, Italy; (E.E.); (D.I.); (F.D.N.); (G.L.)
| | - Cesare Cammà
- Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise “Giuseppe Caporale”, Via Campo Boario, 64100 Teramo, Italy; (L.D.R.); (M.T.); (G.M.); (F.P.); (L.F.M.); (C.C.); (N.F.); (F.P.)
| | - Nicola Ferri
- Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise “Giuseppe Caporale”, Via Campo Boario, 64100 Teramo, Italy; (L.D.R.); (M.T.); (G.M.); (F.P.); (L.F.M.); (C.C.); (N.F.); (F.P.)
| | - Francesco Pomilio
- Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise “Giuseppe Caporale”, Via Campo Boario, 64100 Teramo, Italy; (L.D.R.); (M.T.); (G.M.); (F.P.); (L.F.M.); (C.C.); (N.F.); (F.P.)
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Tóth K, Damjanova I, Laczkó L, Buzgó L, Lesinszki V, Ungvári E, Jánvári L, Hanczvikkel A, Tóth Á, Szabó D. Genomic Epidemiology of C2/H30Rx and C1-M27 Subclades of Escherichia coli ST131 Isolates from Clinical Blood Samples in Hungary. Antibiotics (Basel) 2024; 13:363. [PMID: 38667039 PMCID: PMC11047377 DOI: 10.3390/antibiotics13040363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 04/10/2024] [Accepted: 04/14/2024] [Indexed: 04/29/2024] Open
Abstract
Extended-spectrum β-lactamase-producing Escherichia coli ST131 has become widespread worldwide. This study aims to characterize the virulome, resistome, and population structure of E. coli ST131 isolates from clinical blood samples in Hungary. A total of 30 C2/H30Rx and 33 C1-M27 ST131 isolates were selected for Illumina MiSeq sequencing and 30 isolates for MinION sequencing, followed by hybrid de novo assembly. Five C2/H30Rx and one C1-M27 cluster were identified. C1-M27 isolates harbored the F1:A2:B20 plasmid in 93.9% of cases. Long-read sequencing revealed that blaCTX-M-27 was on plasmids. Among the C2/H30Rx isolates, only six isolates carried the C2-associated F2:A1:B- plasmid type. Of 19 hybrid-assembled C2/H30Rx genomes, the blaCTX-M-15 gene was located on plasmid only in one isolate, while in the other isolates, ISEcp1 or IS26-mediated chromosomal integration of blaCTX-M-15 was detected in unique variations. In one isolate a part of F2:A1:B- plasmid integrated into the chromosome. These results suggest that CTX-M-15-producing C2/H30Rx and CTX-M-27-producing C1-M27 subclades may have emerged and spread in different ways in Hungary. While blaCTX-M-27 was carried mainly on the C1/H30R-associated F1:A2:B20 plasmid, the IncF-like plasmids of C2/H30Rx or its composite transposons have been incorporated into the chromosome through convergent evolutionary processes.
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Affiliation(s)
- Kinga Tóth
- Institute of Medical Microbiology, Faculty of Medicine, Semmelweis University, 1089 Budapest, Hungary
- Department of Bacteriology, Parasitology and Mycology, National Center for Public Health and Pharmacy, 1097 Budapest, Hungary (L.B.); (L.J.); (Á.T.)
| | - Ivelina Damjanova
- Department of Bacteriology, Parasitology and Mycology, National Center for Public Health and Pharmacy, 1097 Budapest, Hungary (L.B.); (L.J.); (Á.T.)
| | - Levente Laczkó
- One Health Institute, Faculty of Health Sciences, University of Debrecen, 4032 Debrecen, Hungary
- HUN-REN-DE Conservation Biology Research Group, University of Debrecen, 4032 Debrecen, Hungary
| | - Lilla Buzgó
- Department of Bacteriology, Parasitology and Mycology, National Center for Public Health and Pharmacy, 1097 Budapest, Hungary (L.B.); (L.J.); (Á.T.)
| | - Virág Lesinszki
- Department of Bacteriology, Parasitology and Mycology, National Center for Public Health and Pharmacy, 1097 Budapest, Hungary (L.B.); (L.J.); (Á.T.)
| | - Erika Ungvári
- Department of Bacteriology, Parasitology and Mycology, National Center for Public Health and Pharmacy, 1097 Budapest, Hungary (L.B.); (L.J.); (Á.T.)
| | - Laura Jánvári
- Department of Bacteriology, Parasitology and Mycology, National Center for Public Health and Pharmacy, 1097 Budapest, Hungary (L.B.); (L.J.); (Á.T.)
| | - Adrienn Hanczvikkel
- Department of Bacteriology, Parasitology and Mycology, National Center for Public Health and Pharmacy, 1097 Budapest, Hungary (L.B.); (L.J.); (Á.T.)
| | - Ákos Tóth
- Department of Bacteriology, Parasitology and Mycology, National Center for Public Health and Pharmacy, 1097 Budapest, Hungary (L.B.); (L.J.); (Á.T.)
| | - Dóra Szabó
- Institute of Medical Microbiology, Faculty of Medicine, Semmelweis University, 1089 Budapest, Hungary
- HUN-REN-SE Human Microbiota Research Group, 1052 Budapest, Hungary
- Neurosurgical and Neurointervention Clinic, Semmelweis University, 1083 Budapest, Hungary
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Carhuaricra-Huaman D, Gonzalez IHL, Ramos PL, da Silva AM, Setubal JC. Analysis of twelve genomes of the bacterium Kerstersia gyiorum from brown-throated sloths ( Bradypus variegatus), the first from a non-human host. PeerJ 2024; 12:e17206. [PMID: 38584940 PMCID: PMC10999152 DOI: 10.7717/peerj.17206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 03/18/2024] [Indexed: 04/09/2024] Open
Abstract
Kerstersia gyiorum is a Gram-negative bacterium found in various animals, including humans, where it has been associated with various infections. Knowledge of the basic biology of K. gyiorum is essential to understand the evolutionary strategies of niche adaptation and how this organism contributes to infectious diseases; however, genomic data about K. gyiorum is very limited, especially from non-human hosts. In this work, we sequenced 12 K. gyiorum genomes isolated from healthy free-living brown-throated sloths (Bradypus variegatus) in the Parque Estadual das Fontes do Ipiranga (São Paulo, Brazil), and compared them with genomes from isolates of human origin, in order to gain insights into genomic diversity, phylogeny, and host specialization of this species. Phylogenetic analysis revealed that these K. gyiorum strains are structured according to host. Despite the fact that sloth isolates were sampled from a single geographic location, the intra-sloth K. gyiorum diversity was divided into three clusters, with differences of more than 1,000 single nucleotide polymorphisms between them, suggesting the circulation of various K. gyiorum lineages in sloths. Genes involved in mobilome and defense mechanisms against mobile genetic elements were the main source of gene content variation between isolates from different hosts. Sloth-specific K. gyiorum genome features include an IncN2 plasmid, a phage sequence, and a CRISPR-Cas system. The broad diversity of defense elements in K. gyiorum (14 systems) may prevent further mobile element flow and explain the low amount of mobile genetic elements in K. gyiorum genomes. Gene content variation may be important for the adaptation of K. gyiorum to different host niches. This study furthers our understanding of diversity, host adaptation, and evolution of K. gyiorum, by presenting and analyzing the first genomes of non-human isolates.
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Affiliation(s)
| | - Irys H L Gonzalez
- Coordenadoria de Fauna Silvestre, Secretaria do Meio Ambiente, São Paulo, SP, Brazil
| | - Patricia L Ramos
- Coordenadoria de Fauna Silvestre, Secretaria do Meio Ambiente, São Paulo, SP, Brazil
| | - Aline M da Silva
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Joao C Setubal
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
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Montoya-Giraldo M, Piper KR, Ikhimiukor OO, Park CJ, Caimi NA, Buecher DC, Valdez EW, Northup DE, Andam CP. Ecology shapes the genomic and biosynthetic diversification of Streptomyces bacteria from insectivorous bats. Microb Genom 2024; 10. [PMID: 38625724 DOI: 10.1099/mgen.0.001238] [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] [Indexed: 04/17/2024] Open
Abstract
Streptomyces are prolific producers of secondary metabolites from which many clinically useful compounds have been derived. They inhabit diverse habitats but have rarely been reported in vertebrates. Here, we aim to determine to what extent the ecological source (bat host species and cave sites) influence the genomic and biosynthetic diversity of Streptomyces bacteria. We analysed draft genomes of 132 Streptomyces isolates sampled from 11 species of insectivorous bats from six cave sites in Arizona and New Mexico, USA. We delineated 55 species based on the genome-wide average nucleotide identity and core genome phylogenetic tree. Streptomyces isolates that colonize the same bat species or inhabit the same site exhibit greater overall genomic similarity than they do with Streptomyces from other bat species or sites. However, when considering biosynthetic gene clusters (BGCs) alone, BGC distribution is not structured by the ecological or geographical source of the Streptomyces that carry them. Each genome carried between 19-65 BGCs (median=42.5) and varied even among members of the same Streptomyces species. Nine major classes of BGCs were detected in ten of the 11 bat species and in all sites: terpene, non-ribosomal peptide synthetase, polyketide synthase, siderophore, RiPP-like, butyrolactone, lanthipeptide, ectoine, melanin. Finally, Streptomyces genomes carry multiple hybrid BGCs consisting of signature domains from two to seven distinct BGC classes. Taken together, our results bring critical insights to understanding Streptomyces-bat ecology and BGC diversity that may contribute to bat health and in augmenting current efforts in natural product discovery, especially from underexplored or overlooked environments.
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Affiliation(s)
- Manuela Montoya-Giraldo
- Department of Biological Sciences, University at Albany, State University of New York, Albany, New York, USA
| | - Kathryn R Piper
- Department of Biological Sciences, University at Albany, State University of New York, Albany, New York, USA
| | - Odion O Ikhimiukor
- Department of Biological Sciences, University at Albany, State University of New York, Albany, New York, USA
| | - Cooper J Park
- Department of Molecular, Cellular and Biomedical Sciences, University of New Hampshire, Durham, New Hampshire, USA
| | - Nicole A Caimi
- Department of Biology, University of New Mexico, Albuquerque, New Mexico, USA
| | | | - Ernest W Valdez
- Department of Biology, University of New Mexico, Albuquerque, New Mexico, USA
- U.S. Geological Survey, Fort Collins Science Center, Fort Collins, Colorado, USA
| | - Diana E Northup
- Department of Biology, University of New Mexico, Albuquerque, New Mexico, USA
| | - Cheryl P Andam
- Department of Biological Sciences, University at Albany, State University of New York, Albany, New York, USA
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Vadillo‐Dieguez A, Zeng Z, Mansfield JW, Grinberg NF, Lynn SC, Gregg A, Connell J, Harrison RJ, Jackson RW, Hulin MT. Genetic dissection of the tissue-specific roles of type III effectors and phytotoxins in the pathogenicity of Pseudomonas syringae pv. syringae to cherry. MOLECULAR PLANT PATHOLOGY 2024; 25:e13451. [PMID: 38590135 PMCID: PMC11002349 DOI: 10.1111/mpp.13451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 03/13/2024] [Accepted: 03/19/2024] [Indexed: 04/10/2024]
Abstract
When compared with other phylogroups (PGs) of the Pseudomonas syringae species complex, P. syringae pv. syringae (Pss) strains within PG2 have a reduced repertoire of type III effectors (T3Es) but produce several phytotoxins. Effectors within the cherry pathogen Pss 9644 were grouped based on their frequency in strains from Prunus as the conserved effector locus (CEL) common to most P. syringae pathogens; a core of effectors common to PG2; a set of PRUNUS effectors common to cherry pathogens; and a FLEXIBLE set of T3Es. Pss 9644 also contains gene clusters for biosynthesis of toxins syringomycin, syringopeptin and syringolin A. After confirmation of virulence gene expression, mutants with a sequential series of T3E and toxin deletions were pathogenicity tested on wood, leaves and fruits of sweet cherry (Prunus avium) and leaves of ornamental cherry (Prunus incisa). The toxins had a key role in disease development in fruits but were less important in leaves and wood. An effectorless mutant retained some pathogenicity to fruit but not wood or leaves. Striking redundancy was observed amongst effector groups. The CEL effectors have important roles during the early stages of leaf infection and possibly acted synergistically with toxins in all tissues. Deletion of separate groups of T3Es had more effect in P. incisa than in P. avium. Mixed inocula were used to complement the toxin mutations in trans and indicated that strain mixtures may be important in the field. Our results highlight the niche-specific role of toxins in P. avium tissues and the complexity of effector redundancy in the pathogen Pss 9644.
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Affiliation(s)
- Andrea Vadillo‐Dieguez
- NIABCambridgeUK
- School of Biosciences and the Birmingham Institute of Forest ResearchUniversity of BirminghamBirminghamUK
| | | | | | | | | | | | | | - Richard J. Harrison
- NIABCambridgeUK
- School of Biosciences and the Birmingham Institute of Forest ResearchUniversity of BirminghamBirminghamUK
- Faculty of Natural Sciences, Plant Science GroupWageningen University and ResearchWageningenNetherlands
- Present address:
Faculty of Natural Sciences, Plant Science GroupWageningen University and ResearchWageningenNetherlands
| | - Robert W. Jackson
- School of Biosciences and the Birmingham Institute of Forest ResearchUniversity of BirminghamBirminghamUK
| | - Michelle T. Hulin
- NIABCambridgeUK
- Department of Plant Soil & Microbial SciencesMichigan State UniversityEast LansingUSA
- Present address:
Department of Plant Soil & Microbial SciencesMichigan State UniversityEast LansingUSA
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50
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Sommer J, Reiter H, Sattler J, Cacace E, Eisfeld J, Gatermann S, Hamprecht A, Göttig S. Emergence of OXA-48-like producing Citrobacter species, Germany, 2011 to 2022. Euro Surveill 2024; 29:2300528. [PMID: 38606571 PMCID: PMC11010590 DOI: 10.2807/1560-7917.es.2024.29.15.2300528] [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: 09/29/2023] [Accepted: 01/10/2024] [Indexed: 04/13/2024] Open
Abstract
BackgroundCarbapenemase-producing Enterobacterales are a public health threat worldwide and OXA-48 is the most prevalent carbapenemase in Germany and western Europe. However, the molecular epidemiology of OXA-48 in species other than Escherichia coli and Klebsiella pneumoniae remains poorly understood.AimTo analyse the molecular epidemiology of OXA-48 and OXA-48-like carbapenemases in Citrobacter species (spp.) in Germany between 2011 and 2022.MethodsData of 26,822 Enterobacterales isolates sent to the National Reference Centre (NRC) for Gram-negative bacteria were evaluated. Ninety-one Citrobacter isolates from 40 German hospitals harbouring bla OXA-48/OXA-48‑like were analysed by whole genome sequencing and conjugation experiments.ResultsThe frequency of OXA-48 in Citrobacter freundii (CF) has increased steadily since 2011 and is now the most prevalent carbapenemase in this species in Germany. Among 91 in-depth analysed Citrobacter spp. isolates, CF (n = 73) and C. koseri (n = 8) were the most common species and OXA-48 was the most common variant (n = 77), followed by OXA-162 (n = 11) and OXA‑181 (n = 3). Forty percent of the isolates belonged to only two sequence types (ST19 and ST22), while most other STs were singletons. The plasmids harbouring bla OXA‑48 and bla OXA-162 belonged to the plasmid types IncL (n = 85) or IncF (n = 3), and plasmids harbouring bla OXA‑181 to IncX3 (n = 3). Three IncL plasmid clusters (57/85 IncL plasmids) were identified, which were highly transferable in contrast to sporadic plasmids.ConclusionIn CF in Germany, OXA-48 is the predominant carbapenemase. Dissemination is likely due to distinct highly transmissible plasmids harbouring bla OXA‑48 or bla OXA-48-like and the spread of the high-risk clonal lineages ST19 and ST22.
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Affiliation(s)
- Julian Sommer
- Goethe University Frankfurt, University Hospital, Institute of Medical Microbiology and Infection Control, Frankfurt am Main, Germany
| | - Hannah Reiter
- Goethe University Frankfurt, University Hospital, Institute of Medical Microbiology and Infection Control, Frankfurt am Main, Germany
| | - Janko Sattler
- University Hospital Cologne and Faculty of Medicine, University of Cologne, Institute for Medical Microbiology, Immunology and Hygiene, Cologne, Germany
| | - Elisabetta Cacace
- Institute of Microbiology, Department of Biology, ETH Zurich, Zurich, Switzerland
- Goethe University Frankfurt, University Hospital, Institute of Medical Microbiology and Infection Control, Frankfurt am Main, Germany
| | - Jessica Eisfeld
- German National Reference Centre for Multidrug-resistant Gram-negative Bacteria, Department of Medical Microbiology, Ruhr-University Bochum, Bochum, Germany
| | - Sören Gatermann
- German National Reference Centre for Multidrug-resistant Gram-negative Bacteria, Department of Medical Microbiology, Ruhr-University Bochum, Bochum, Germany
| | - Axel Hamprecht
- University of Oldenburg and Klinikum Oldenburg, Institute for Medical Microbiology and Virology, Oldenburg, Germany
- University Hospital Cologne and Faculty of Medicine, University of Cologne, Institute for Medical Microbiology, Immunology and Hygiene, Cologne, Germany
| | - Stephan Göttig
- Goethe University Frankfurt, University Hospital, Institute of Medical Microbiology and Infection Control, Frankfurt am Main, Germany
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