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Lee AJ, Reiter T, Doing G, Oh J, Hogan DA, Greene CS. Using genome-wide expression compendia to study microorganisms. Comput Struct Biotechnol J 2022; 20:4315-4324. [PMID: 36016717 PMCID: PMC9396250 DOI: 10.1016/j.csbj.2022.08.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 08/07/2022] [Accepted: 08/07/2022] [Indexed: 11/30/2022] Open
Abstract
A gene expression compendium is a heterogeneous collection of gene expression experiments assembled from data collected for diverse purposes. The widely varied experimental conditions and genetic backgrounds across samples creates a tremendous opportunity for gaining a systems level understanding of the transcriptional responses that influence phenotypes. Variety in experimental design is particularly important for studying microbes, where the transcriptional responses integrate many signals and demonstrate plasticity across strains including response to what nutrients are available and what microbes are present. Advances in high-throughput measurement technology have made it feasible to construct compendia for many microbes. In this review we discuss how these compendia are constructed and analyzed to reveal transcriptional patterns.
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Affiliation(s)
- Alexandra J. Lee
- Genomics and Computational Biology Graduate Program, University of Pennsylvania, Philadelphia, PA, USA
| | - Taylor Reiter
- Department of Biochemistry and Molecular Genetics, University of Colorado School of Medicine, Denver, CO, USA
| | - Georgia Doing
- The Jackson Laboratory for Genomic Medicine, Farmington, CT, USA
| | - Julia Oh
- The Jackson Laboratory for Genomic Medicine, Farmington, CT, USA
| | - Deborah A. Hogan
- Department of Microbiology and Immunology, Geisel School of Medicine, Dartmouth, Hanover, NH, USA
| | - Casey S. Greene
- Department of Biochemistry and Molecular Genetics, University of Colorado School of Medicine, Denver, CO, USA
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Huang YS, Lin CY, Cheng WC. Investigating the Transcriptomic and Expression Presence-Absence Variation Exist in Japanese Eel (Anguilla japonica), a Primitive Teleost. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2021; 23:943-954. [PMID: 34714446 DOI: 10.1007/s10126-021-10077-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 09/28/2021] [Indexed: 06/13/2023]
Abstract
The pan-genome was defined as the complete gene set across strains, and it is built upon genes displaying presence-absence variations (PAVs); the pan-transcriptome is defined by recalling the pan-genome. Indeed, a PAV is reflected from the expression presence-absence variation (ePAV). In this study, treated with androgen, eels, which are a primitive fish from the basal lineage of Teleost, with different ovarian developments were chosen and submitted to RAN-sequencing. Transcriptomes were the assembly against eel genome scaffolds; a pair was the unit (the same eel before and after treatment) to analyze DEGs (differentially expressed genes); the core, unique, or accessory genes were identified, and the list of DEGs was analyzed to investigate ePAV. The results suggest that there was ePAV in Japanese eel, and the ePAV of eel was analyzed by pathway enrichment. These results signify the importance of genetic differential expression on the variations of phenotypes by androgen, and a transcriptomic approach appears to enable extracting multiple layers of genomic data.
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Affiliation(s)
- Yung-Sen Huang
- Department of Life Science, National University of Kaohsiung, Kaohsiung University Road, Nan Tzu Dist, No.700, 811, Kaohsiung, Taiwan.
| | - Chung-Yen Lin
- Institute of Information Science, Academia Sinica, Nankang Dist, No. 128 Academia Road, section 2, 115, Taipei, Taiwan
| | - Wen-Chih Cheng
- Institute of Information Science, Academia Sinica, Nankang Dist, No. 128 Academia Road, section 2, 115, Taipei, Taiwan
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Porterfield HS, Maakestad LJ, LaMarche MM, Thurman AL, Kienenberger ZE, Pitcher NJ, Hansen AR, Zirbes CF, Boyken L, Muyskens BL, Pezzulo AA, Singh SB, Twait E, Ford B, Diekema DJ, Reeb V, Fischer AJ. MRSA strains with distinct accessory genes predominate at different ages in cystic fibrosis. Pediatr Pulmonol 2021; 56:2868-2878. [PMID: 34219414 PMCID: PMC8395597 DOI: 10.1002/ppul.25559] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 06/28/2021] [Accepted: 06/29/2021] [Indexed: 01/30/2023]
Abstract
RATIONALE Methicillin resistant Staphylococcus aureus (MRSA) is prevalent and consequential in cystic fibrosis (CF). Whole genome sequencing (WGS) could reveal genomic differences in MRSA associated with poorer outcomes or detect MRSA transmission. OBJECTIVES To identify MRSA genes associated with low lung function and potential MRSA transmission in CF. METHODS We collected 97 MRSA isolates from 74 individuals with CF from 2017 and performed short-read WGS. We determined sequence type (ST) and the phylogenetic relationship between isolates. We aligned accessory genes from 25 reference genomes to genome assemblies, classified isolates by accessory gene content, and correlated the accessory genome to clinical outcomes. RESULTS The most prevalent ST were ST5 (N = 55), ST8 (N = 15), and ST105 (N = 14). Closely related MRSA strains were shared by family members with CF, but rarely between unrelated individuals. Three clusters of MRSA were identified by accessory genome content. Cluster A, including ST5 and ST105, was highly prevalent at all ages. Cluster B, including ST8, was more limited to younger patients. Cluster C included 6 distantly related strains. Patients 20 years old and younger infected with Cluster A had lower forced expiratory volume in the first second (FEV1 ) and higher sputum biomass compared to similar-aged patients with Cluster B. CONCLUSIONS In this CF cohort, we identified MRSA subtypes that predominate at different ages and differ by accessory gene content. The most prevalent cluster of MRSA, including ST5 and ST105, was associated with lower FEV1 . ST8 MRSA was more common in younger patients and thus has the potential to rise in prevalence as these patients age.
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Affiliation(s)
- Harry S Porterfield
- Department of Pathology, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA.,Department of Laboratory Medicine, National Institutes of Health Clinical Center, Bethesda, Maryland, USA
| | - Lucas J Maakestad
- Stead Family Department of Pediatrics, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Mason M LaMarche
- Stead Family Department of Pediatrics, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Andrew L Thurman
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Zoe E Kienenberger
- Stead Family Department of Pediatrics, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Nicholas J Pitcher
- Stead Family Department of Pediatrics, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Alexis R Hansen
- Stead Family Department of Pediatrics, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Christian F Zirbes
- Stead Family Department of Pediatrics, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Linda Boyken
- Department of Pathology, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Bethany L Muyskens
- Stead Family Department of Pediatrics, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Alejandro A Pezzulo
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Sachinkumar B Singh
- Stead Family Department of Pediatrics, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Erik Twait
- State Hygienic Laboratory at the University of Iowa, Iowa City, Iowa, USA
| | - Bradley Ford
- Department of Pathology, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Daniel J Diekema
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Valérie Reeb
- State Hygienic Laboratory at the University of Iowa, Iowa City, Iowa, USA
| | - Anthony J Fischer
- Stead Family Department of Pediatrics, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
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Costa SS, Guimarães LC, Silva A, Soares SC, Baraúna RA. First Steps in the Analysis of Prokaryotic Pan-Genomes. Bioinform Biol Insights 2020; 14:1177932220938064. [PMID: 32843837 PMCID: PMC7418249 DOI: 10.1177/1177932220938064] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 05/26/2020] [Indexed: 01/14/2023] Open
Abstract
Pan-genome is defined as the set of orthologous and unique genes of a specific group of organisms. The pan-genome is composed by the core genome, accessory genome, and species- or strain-specific genes. The pan-genome is considered open or closed based on the alpha value of the Heap law. In an open pan-genome, the number of gene families will continuously increase with the addition of new genomes to the analysis, while in a closed pan-genome, the number of gene families will not increase considerably. The first step of a pan-genome analysis is the homogenization of genome annotation. The same software should be used to annotate genomes, such as GeneMark or RAST. Subsequently, several software are used to calculate the pan-genome such as BPGA, GET_HOMOLOGUES, PGAP, among others. This review presents all these initial steps for those who want to perform a pan-genome analysis, explaining key concepts of the area. Furthermore, we present the pan-genomic analysis of 9 bacterial species. These are the species with the highest number of genomes deposited in GenBank. We also show the influence of the identity and coverage parameters on the prediction of orthologous and paralogous genes. Finally, we cite the perspectives of several research areas where pan-genome analysis can be used to answer important issues.
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Affiliation(s)
- Sávio Souza Costa
- Centro de Genômica e Biologia de Sistemas, Universidade Federal do Pará, Belém, Brazil
- Laboratório de Engenharia Biológica, Espaço Inovação, Parque de Ciência e Tecnologia Guamá, Belém, Brazil
| | - Luís Carlos Guimarães
- Centro de Genômica e Biologia de Sistemas, Universidade Federal do Pará, Belém, Brazil
| | - Artur Silva
- Centro de Genômica e Biologia de Sistemas, Universidade Federal do Pará, Belém, Brazil
- Laboratório de Engenharia Biológica, Espaço Inovação, Parque de Ciência e Tecnologia Guamá, Belém, Brazil
| | - Siomar Castro Soares
- Instituto de Ciências Biológicas e Naturais, Universidade Federal do Triângulo Mineiro, Uberaba, Brazil
| | - Rafael Azevedo Baraúna
- Centro de Genômica e Biologia de Sistemas, Universidade Federal do Pará, Belém, Brazil
- Laboratório de Engenharia Biológica, Espaço Inovação, Parque de Ciência e Tecnologia Guamá, Belém, Brazil
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Treffon J, Chaves-Moreno D, Niemann S, Pieper DH, Vogl T, Roth J, Kahl BC. Importance of superoxide dismutases A and M for protection of Staphylococcus aureus in the oxidative stressful environment of cystic fibrosis airways. Cell Microbiol 2020; 22:e13158. [PMID: 31895486 DOI: 10.1111/cmi.13158] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 12/18/2019] [Accepted: 12/20/2019] [Indexed: 12/18/2022]
Abstract
Staphylococcus aureus is one of the earliest pathogens that persists the airways of cystic fibrosis (CF) patients and contributes to increased inflammation and decreased lung function. In contrast to other staphylococci, S. aureus possesses two superoxide dismutases (SODs), SodA and SodM, with SodM being unique to S. aureus. Both SODs arm S. aureus for its fight against oxidative stress, a by-product of inflammatory reactions. Despite complex investigations, it is still unclear if both enzymes are crucial for the special pathogenicity of S. aureus. To investigate the role of both SODs during staphylococcal persistence in CF airways, we analysed survival and gene expression of S. aureus CF isolates and laboratory strains in different CF-related in vitro and ex vivo settings. Bacteria located in inflammatory and oxidised CF sputum transcribed high levels of sodA and sodM. Especially expression values of sodM were remarkably higher in CF sputum than in bacterial in vitro cultures. Interestingly, also S. aureus located in airway epithelial cells expressed elevated transcript numbers of both SODs, indicating that S. aureus is exposed to oxidative stress at various sites within CF airways. Both enzymes promoted survival of S. aureus during polymorphonuclear leukocyte killing and seem to act compensatory, thereby giving evidence that the interwoven interaction of SodA and SodM contributes to S. aureus virulence and facilitates S. aureus persistence within CF airways.
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Affiliation(s)
- Janina Treffon
- Institute of Medical Microbiology, University Hospital Münster, Münster, Germany
| | - Diego Chaves-Moreno
- Microbial Interactions and Processes Research Group, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Silke Niemann
- Institute of Medical Microbiology, University Hospital Münster, Münster, Germany
| | - Dietmar Helmut Pieper
- Microbial Interactions and Processes Research Group, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Thomas Vogl
- Institute of Immunology, University Hospital Münster, Münster, Germany
| | - Johannes Roth
- Institute of Immunology, University Hospital Münster, Münster, Germany
| | - Barbara C Kahl
- Institute of Medical Microbiology, University Hospital Münster, Münster, Germany
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Cesur MF, Abdik E, Güven-Gülhan Ü, Durmuş S, Çakır T. Computational Systems Biology of Metabolism in Infection. EXPERIENTIA SUPPLEMENTUM (2012) 2018; 109:235-282. [PMID: 30535602 DOI: 10.1007/978-3-319-74932-7_6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A systems approach to elucidate the effect of infection on cell metabolism provides several opportunities from a better understanding of molecular mechanisms to the identification of potential biomarkers and drug targets. This is obvious from the fact that we have witnessed the accelerated use of computational systems biology in the last five years to study metabolic changes in pathogen and/or host cells in response to infection. In this chapter, we aim to present a comprehensive review of the recent research by focusing on genome-scale metabolic network models of pathogen-host systems and genome-wide metabolomics and fluxomics analysis of infected cells.
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Affiliation(s)
- Müberra Fatma Cesur
- Computational Systems Biology Group, Department of Bioengineering, Gebze Technical University, Gebze, Kocaeli, Turkey
| | - Ecehan Abdik
- Computational Systems Biology Group, Department of Bioengineering, Gebze Technical University, Gebze, Kocaeli, Turkey
| | - Ünzile Güven-Gülhan
- Computational Systems Biology Group, Department of Bioengineering, Gebze Technical University, Gebze, Kocaeli, Turkey
| | - Saliha Durmuş
- Computational Systems Biology Group, Department of Bioengineering, Gebze Technical University, Gebze, Kocaeli, Turkey
| | - Tunahan Çakır
- Computational Systems Biology Group, Department of Bioengineering, Gebze Technical University, Gebze, Kocaeli, Turkey.
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Chaves-Moreno D, Wos-Oxley ML, Jáuregui R, Medina E, Oxley AP, Pieper DH. Exploring the transcriptome of Staphylococcus aureus in its natural niche. Sci Rep 2016; 6:33174. [PMID: 27641137 PMCID: PMC5027550 DOI: 10.1038/srep33174] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Accepted: 08/23/2016] [Indexed: 02/07/2023] Open
Abstract
Staphylococcus aureus is an important human pathogen and commensal, where the human nose is the predominant reservoir. To better understand its behavior in this environmental niche, RNA was extracted from the anterior nares of three documented S. aureus carriers and the metatranscriptome analyzed by RNAseq. In addition, the in vivo transcriptomes were compared to previously published transcriptomes of two in vitro grown S. aureus strains. None of the in vitro conditions, even growth in medium resembling the anterior nares environment, mimicked in vivo conditions. Survival in the nose was strongly controlled by the limitation of iron and evident by the expression of iron acquisition systems. S. aureus populations in different individuals clearly experience different environmental stresses, which they attempt to overcome by the expression of compatible solute biosynthetic pathways, changes in their cell wall composition and synthesis of general stress proteins. Moreover, the expression of adhesins was also important for colonization of the anterior nares. However, different S. aureus strains also showed different in vivo behavior. The assessment of general in vivo expression patterns and commonalities between different S. aureus strains will in the future result in new knowledge based strategies for controlling colonization.
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Affiliation(s)
- Diego Chaves-Moreno
- Microbial Interactions and Processes Research Group, Helmholtz Centre for Infection Research, Inhoffenstr. 7, 38124 Braunschweig, Germany
| | - Melissa L Wos-Oxley
- Microbial Interactions and Processes Research Group, Helmholtz Centre for Infection Research, Inhoffenstr. 7, 38124 Braunschweig, Germany
| | - Ruy Jáuregui
- Microbial Interactions and Processes Research Group, Helmholtz Centre for Infection Research, Inhoffenstr. 7, 38124 Braunschweig, Germany
| | - Eva Medina
- Infection and Immunology Research Group, Helmholtz Centre for Infection Research, Inhoffenstr. 7, 38124 Braunschweig, Germany
| | - Andrew Pa Oxley
- Microbial Interactions and Processes Research Group, Helmholtz Centre for Infection Research, Inhoffenstr. 7, 38124 Braunschweig, Germany
| | - Dietmar H Pieper
- Microbial Interactions and Processes Research Group, Helmholtz Centre for Infection Research, Inhoffenstr. 7, 38124 Braunschweig, Germany
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Omics Approaches for the Study of Adaptive Immunity to Staphylococcus aureus and the Selection of Vaccine Candidates. Proteomes 2016; 4:proteomes4010011. [PMID: 28248221 PMCID: PMC5217363 DOI: 10.3390/proteomes4010011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Revised: 02/05/2016] [Accepted: 03/01/2016] [Indexed: 01/20/2023] Open
Abstract
Staphylococcus aureus is a dangerous pathogen both in hospitals and in the community. Due to the crisis of antibiotic resistance, there is an urgent need for new strategies to combat S. aureus infections, such as vaccination. Increasing our knowledge about the mechanisms of protection will be key for the successful prevention or treatment of S. aureus invasion. Omics technologies generate a comprehensive picture of the physiological and pathophysiological processes within cells, tissues, organs, organisms and even populations. This review provides an overview of the contribution of genomics, transcriptomics, proteomics, metabolomics and immunoproteomics to the current understanding of S. aureus‑host interaction, with a focus on the adaptive immune response to the microorganism. While antibody responses during colonization and infection have been analyzed in detail using immunoproteomics, the full potential of omics technologies has not been tapped yet in terms of T-cells. Omics technologies promise to speed up vaccine development by enabling reverse vaccinology approaches. In consequence, omics technologies are powerful tools for deepening our understanding of the “superbug” S. aureus and for improving its control.
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