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Sekar A, Fan Y, Tierney P, McCanne M, Jones P, Malick F, Kannambadi D, Wannomae KK, Inverardi N, Muratoglu O, Oral E. Investigating the translational value of Periprosthetic Joint Infection (PJI) models to determine the risk and severity of Staphylococcal biofilms. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.29.591689. [PMID: 38746179 PMCID: PMC11092509 DOI: 10.1101/2024.04.29.591689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
With the advent of antibiotic-eluting polymeric materials for targeting recalcitrant infections, using preclinical models to study biofilm is crucial for improving the treatment efficacy in periprosthetic joint infections. The stratification of risk and severity of infections is needed to develop an effective clinical dosing framework with better outcomes. Here, using in-vivo and in-vitro implant-associated infection models, we demonstrate that methicillin-sensitive and resistant Staphylococcus aureus (MSSA and MRSA) have model-dependent distinct implant and peri-implant tissue colonization patterns. The maturity of biofilms and the location (implant vs tissue) were found to influence the antibiotic susceptibility evolution profiles of MSSA and MRSA and the models could capture the differing host-microbe interactions in vivo. Gene expression studies revealed the molecular heterogeneity of colonizing bacterial populations. The comparison and stratification of the risk and severity of infection across different preclinical models provided in this study can guide clinical dosing to effectively prevent or treat PJI.
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Kengmo Tchoupa A, Elsherbini AMA, Camus J, Fu X, Hu X, Ghaneme O, Seibert L, Lebtig M, Böcker MA, Horlbeck A, Lambidis SP, Schittek B, Kretschmer D, Lämmerhofer M, Peschel A. Lipase-mediated detoxification of host-derived antimicrobial fatty acids by Staphylococcus aureus. Commun Biol 2024; 7:572. [PMID: 38750133 PMCID: PMC11096360 DOI: 10.1038/s42003-024-06278-3] [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: 10/30/2023] [Accepted: 05/02/2024] [Indexed: 05/18/2024] Open
Abstract
Long-chain fatty acids with antimicrobial properties are abundant on the skin and mucosal surfaces, where they are essential to restrict the proliferation of opportunistic pathogens such as Staphylococcus aureus. These antimicrobial fatty acids (AFAs) elicit bacterial adaptation strategies, which have yet to be fully elucidated. Characterizing the pervasive mechanisms used by S. aureus to resist AFAs could open new avenues to prevent pathogen colonization. Here, we identify the S. aureus lipase Lip2 as a novel resistance factor against AFAs. Lip2 detoxifies AFAs via esterification with cholesterol. This is reminiscent of the activity of the fatty acid-modifying enzyme (FAME), whose identity has remained elusive for over three decades. In vitro, Lip2-dependent AFA-detoxification was apparent during planktonic growth and biofilm formation. Our genomic analysis revealed that prophage-mediated inactivation of Lip2 was rare in blood, nose, and skin strains, suggesting a particularly important role of Lip2 for host - microbe interactions. In a mouse model of S. aureus skin colonization, bacteria were protected from sapienic acid (a human-specific AFA) in a cholesterol- and lipase-dependent manner. These results suggest Lip2 is the long-sought FAME that exquisitely manipulates environmental lipids to promote bacterial growth in otherwise inhospitable niches.
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Affiliation(s)
- Arnaud Kengmo Tchoupa
- Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Infection Biology Section, University of Tübingen, Tübingen, Germany.
- Cluster of Excellence EXC 2124 Controlling Microbes to Fight Infections, University of Tübingen, Tübingen, Germany.
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany.
| | - Ahmed M A Elsherbini
- Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Infection Biology Section, University of Tübingen, Tübingen, Germany
- Cluster of Excellence EXC 2124 Controlling Microbes to Fight Infections, University of Tübingen, Tübingen, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany
| | - Justine Camus
- Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Infection Biology Section, University of Tübingen, Tübingen, Germany
- Cluster of Excellence EXC 2124 Controlling Microbes to Fight Infections, University of Tübingen, Tübingen, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany
| | - Xiaoqing Fu
- Institute of Pharmaceutical Sciences, University of Tübingen, Tübingen, Germany
| | - Xuanheng Hu
- Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Infection Biology Section, University of Tübingen, Tübingen, Germany
- Cluster of Excellence EXC 2124 Controlling Microbes to Fight Infections, University of Tübingen, Tübingen, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany
| | - Oumayma Ghaneme
- Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Infection Biology Section, University of Tübingen, Tübingen, Germany
- Cluster of Excellence EXC 2124 Controlling Microbes to Fight Infections, University of Tübingen, Tübingen, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany
| | - Lea Seibert
- Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Infection Biology Section, University of Tübingen, Tübingen, Germany
- Cluster of Excellence EXC 2124 Controlling Microbes to Fight Infections, University of Tübingen, Tübingen, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany
| | - Marco Lebtig
- Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Infection Biology Section, University of Tübingen, Tübingen, Germany
- Cluster of Excellence EXC 2124 Controlling Microbes to Fight Infections, University of Tübingen, Tübingen, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany
| | - Marieke A Böcker
- Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Infection Biology Section, University of Tübingen, Tübingen, Germany
- Cluster of Excellence EXC 2124 Controlling Microbes to Fight Infections, University of Tübingen, Tübingen, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany
| | - Anima Horlbeck
- Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Infection Biology Section, University of Tübingen, Tübingen, Germany
- Cluster of Excellence EXC 2124 Controlling Microbes to Fight Infections, University of Tübingen, Tübingen, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany
| | - Stilianos P Lambidis
- Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Infection Biology Section, University of Tübingen, Tübingen, Germany
- Cluster of Excellence EXC 2124 Controlling Microbes to Fight Infections, University of Tübingen, Tübingen, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany
| | - Birgit Schittek
- Cluster of Excellence EXC 2124 Controlling Microbes to Fight Infections, University of Tübingen, Tübingen, Germany
- Dermatology Department, University Hospital Tübingen, Tübingen, Germany
| | - Dorothee Kretschmer
- Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Infection Biology Section, University of Tübingen, Tübingen, Germany
- Cluster of Excellence EXC 2124 Controlling Microbes to Fight Infections, University of Tübingen, Tübingen, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany
| | - Michael Lämmerhofer
- Institute of Pharmaceutical Sciences, University of Tübingen, Tübingen, Germany
| | - Andreas Peschel
- Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Infection Biology Section, University of Tübingen, Tübingen, Germany
- Cluster of Excellence EXC 2124 Controlling Microbes to Fight Infections, University of Tübingen, Tübingen, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany
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3
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Beck C, Krusche J, Notaro A, Walter A, Kränkel L, Vollert A, Stemmler R, Wittmann J, Schaller M, Slavetinsky C, Mayer C, De Castro C, Peschel A. Wall teichoic acid substitution with glucose governs phage susceptibility of Staphylococcus epidermidis. mBio 2024; 15:e0199023. [PMID: 38470054 PMCID: PMC11005348 DOI: 10.1128/mbio.01990-23] [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: 07/26/2023] [Accepted: 02/20/2024] [Indexed: 03/13/2024] Open
Abstract
The species- and clone-specific susceptibility of Staphylococcus cells for bacteriophages is governed by the structures and glycosylation patterns of wall teichoic acid (WTA) glycopolymers. The glycosylation-dependent phage-WTA interactions in the opportunistic pathogen Staphylococcus epidermidis and in other coagulase-negative staphylococci (CoNS) have remained unknown. We report a new S. epidermidis WTA glycosyltransferase TagE whose deletion confers resistance to siphoviruses such as ΦE72 but enables binding of otherwise unbound podoviruses. S. epidermidis glycerolphosphate WTA was found to be modified with glucose in a tagE-dependent manner. TagE is encoded together with the enzymes PgcA and GtaB providing uridine diphosphate-activated glucose. ΦE72 transduced several other CoNS species encoding TagE homologs, suggesting that WTA glycosylation via TagE is a frequent trait among CoNS that permits interspecies horizontal gene transfer. Our study unravels a crucial mechanism of phage-Staphylococcus interaction and horizontal gene transfer, and it will help in the design of anti-staphylococcal phage therapies.IMPORTANCEPhages are highly specific for certain bacterial hosts, and some can transduce DNA even across species boundaries. How phages recognize cognate host cells remains incompletely understood. Phages infecting members of the genus Staphylococcus bind to wall teichoic acid (WTA) glycopolymers with highly variable structures and glycosylation patterns. How WTA is glycosylated in the opportunistic pathogen Staphylococcus epidermidis and in other coagulase-negative staphylococci (CoNS) species has remained unknown. We describe that S. epidermidis glycosylates its WTA backbone with glucose, and we identify a cluster of three genes responsible for glucose activation and transfer to WTA. Their inactivation strongly alters phage susceptibility patterns, yielding resistance to siphoviruses but susceptibility to podoviruses. Many different CoNS species with related glycosylation genes can exchange DNA via siphovirus ΦE72, suggesting that glucose-modified WTA is crucial for interspecies horizontal gene transfer. Our finding will help to develop antibacterial phage therapies and unravel routes of genetic exchange.
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Affiliation(s)
- Christian Beck
- Cluster of Excellence “Controlling Microbes to Fight Infections (CMFI)”, University of Tübingen, Tübingen, Germany
- Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Infection Biology, University of Tübingen, Tübingen, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany
| | - Janes Krusche
- Cluster of Excellence “Controlling Microbes to Fight Infections (CMFI)”, University of Tübingen, Tübingen, Germany
- Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Infection Biology, University of Tübingen, Tübingen, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany
| | - Anna Notaro
- Department of Agricultural Sciences, University of Naples, Naples, Italy
| | - Axel Walter
- Cluster of Excellence “Controlling Microbes to Fight Infections (CMFI)”, University of Tübingen, Tübingen, Germany
- Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Organismic Interactions/Glycobiology, University of Tübingen, Tübingen, Germany
| | - Lara Kränkel
- Cluster of Excellence “Controlling Microbes to Fight Infections (CMFI)”, University of Tübingen, Tübingen, Germany
- Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Infection Biology, University of Tübingen, Tübingen, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany
| | - Anneli Vollert
- Electron-Microscopy, Department of Dermatology, University Hospital Tübingen, Tübingen, Germany
| | - Regine Stemmler
- Cluster of Excellence “Controlling Microbes to Fight Infections (CMFI)”, University of Tübingen, Tübingen, Germany
- Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Infection Biology, University of Tübingen, Tübingen, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany
| | - Johannes Wittmann
- Leibniz Institute, DSMZ-German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| | - Martin Schaller
- Electron-Microscopy, Department of Dermatology, University Hospital Tübingen, Tübingen, Germany
| | - Christoph Slavetinsky
- Cluster of Excellence “Controlling Microbes to Fight Infections (CMFI)”, University of Tübingen, Tübingen, Germany
- Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Infection Biology, University of Tübingen, Tübingen, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany
- Pediatric Surgery and Urology, University Children's Hospital Tübingen, University of Tübingen, Tübingen, Germany
| | - Christoph Mayer
- Cluster of Excellence “Controlling Microbes to Fight Infections (CMFI)”, University of Tübingen, Tübingen, Germany
- Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Organismic Interactions/Glycobiology, University of Tübingen, Tübingen, Germany
| | | | - Andreas Peschel
- Cluster of Excellence “Controlling Microbes to Fight Infections (CMFI)”, University of Tübingen, Tübingen, Germany
- Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Infection Biology, University of Tübingen, Tübingen, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany
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4
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Beck C, Krusche J, Elsherbini AMA, Du X, Peschel A. Phage susceptibility determinants of the opportunistic pathogen Staphylococcus epidermidis. Curr Opin Microbiol 2024; 78:102434. [PMID: 38364502 DOI: 10.1016/j.mib.2024.102434] [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: 10/18/2023] [Revised: 01/16/2024] [Accepted: 01/18/2024] [Indexed: 02/18/2024]
Abstract
Staphylococcus epidermidis is a common member of the human skin and nose microbiomes and a frequent cause of invasive infections. Transducing phages accomplish the horizontal transfer of resistance and virulence genes by mispackaging of mobile-genetic elements, contributing to severe, therapy-refractory S. epidermidis infections. Lytic phages on the other hand can be interesting candidates for new anti-S. epidermidis phage therapies. Despite the importance of phages, we are only beginning to unravel S. epidermidis phage interactions. Recent studies shed new light on S. epidermidis phage diversity, host range, and receptor specificities. Modulation of cell wall teichoic acids, the major phage receptor structures, along with other phage defense mechanisms, are crucial determinants for S. epidermidis susceptibility to different phage groups.
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Affiliation(s)
- Christian Beck
- Cluster of Excellence "Controlling Microbes to Fight Infections (CMFI)", University of Tübingen, 72076 Tübingen, Germany; Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Infection Biology, University of Tübingen, 72076 Tübingen, Germany; German Centre for Infection Research (DZIF), Partner Site Tübingen, 72076 Tübingen, Germany
| | - Janes Krusche
- Cluster of Excellence "Controlling Microbes to Fight Infections (CMFI)", University of Tübingen, 72076 Tübingen, Germany; Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Infection Biology, University of Tübingen, 72076 Tübingen, Germany; German Centre for Infection Research (DZIF), Partner Site Tübingen, 72076 Tübingen, Germany
| | - Ahmed M A Elsherbini
- Cluster of Excellence "Controlling Microbes to Fight Infections (CMFI)", University of Tübingen, 72076 Tübingen, Germany; Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Infection Biology, University of Tübingen, 72076 Tübingen, Germany; German Centre for Infection Research (DZIF), Partner Site Tübingen, 72076 Tübingen, Germany
| | - Xin Du
- Cluster of Excellence "Controlling Microbes to Fight Infections (CMFI)", University of Tübingen, 72076 Tübingen, Germany; Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Infection Biology, University of Tübingen, 72076 Tübingen, Germany; German Centre for Infection Research (DZIF), Partner Site Tübingen, 72076 Tübingen, Germany
| | - Andreas Peschel
- Cluster of Excellence "Controlling Microbes to Fight Infections (CMFI)", University of Tübingen, 72076 Tübingen, Germany; Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Infection Biology, University of Tübingen, 72076 Tübingen, Germany; German Centre for Infection Research (DZIF), Partner Site Tübingen, 72076 Tübingen, Germany.
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5
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Zheng J, Rong L, Lu Y, Chen J, Hua K, Du Y, Zhang Q, Li W. Trap & kill: a neutrophil-extracellular-trap mimic nanoparticle for anti-bacterial therapy. Biomater Sci 2024; 12:1841-1846. [PMID: 38410093 DOI: 10.1039/d4bm00145a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Fenton chemistry-mediated antimicrobials have demonstrated great promise in antibacterial therapy. However, the short life span and diffusion distance of hydroxyl radicals dampen the therapeutic efficiency of these antimicrobials. Herein, inspired by the neutrophil extracellular trap (NET), in which bacteria are trapped and agglutinated via electronic interactions and killed by reactive oxygen species, we fabricated a NET-mimic nanoparticle to suppress bacterial infection in a "trap & kill" manner. Specifically, this NET-mimic nanoparticle was synthesized via polymerization of ferrocene monomers followed by quaternization with a mannose derivative. Similar to the NET, the NET-mimic nanoparticles trap bacteria through electronic and sugar-lectin interactions between their mannose moieties and the lectins of bacteria, forming bacterial agglutinations. Therefore, they confine the spread of the bacteria and restrict the bacterial cells to the destruction range of hydroxyl radicals. Meanwhile, the ferrocene component of the nanoparticle catalyzes the production of highly toxic hydroxyl radicals at the H2O2 rich infection foci and effectively eradicates the agglutinated bacteria. In a mouse model of an antimicrobial-resistant bacteria-infected wound, the NET-mimic nanoparticles displayed potent antibacterial activity and accelerated wound healing.
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Affiliation(s)
- Jingtao Zheng
- Center for Molecular Metabolism, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, 200 Xiao Ling Wei Street, Nanjing, 210094, China.
| | - Lei Rong
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Center of Advanced Pharmaceuticals and Biomaterials, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Yao Lu
- Center for Molecular Metabolism, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, 200 Xiao Ling Wei Street, Nanjing, 210094, China.
| | - Jing Chen
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China.
| | - Kai Hua
- Center for Molecular Metabolism, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, 200 Xiao Ling Wei Street, Nanjing, 210094, China.
| | - Yongzhong Du
- National Key Laboratory of Advanced Drug Delivery and Release Systems, Shandong Luye Pharmaceutical Co., Ltd, Yantai, Shandong 264003, PR China
| | - Qiang Zhang
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China.
| | - Weishuo Li
- Center for Molecular Metabolism, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, 200 Xiao Ling Wei Street, Nanjing, 210094, China.
- National Key Laboratory of Advanced Drug Delivery and Release Systems, Shandong Luye Pharmaceutical Co., Ltd, Yantai, Shandong 264003, PR China
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Zhou Y, Song Y, Zhang Y, Liu X, Liu L, Bao Y, Wang J, Yang L. Azalomycin F4a targets peptidoglycan synthesis of Gram-positive bacteria revealed by high-throughput CRISPRi-seq analysis. Microbiol Res 2024; 280:127584. [PMID: 38157688 DOI: 10.1016/j.micres.2023.127584] [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: 11/18/2023] [Revised: 12/11/2023] [Accepted: 12/14/2023] [Indexed: 01/03/2024]
Abstract
Azalomycin F4a is a promising 36-membered polyhydroxy macrolide that shows antibacterial activity against drug-resistant Gram-positive bacteria, but its exact working mechanism remains to be elusive. Here, we isolated the azalomycin F4a product from a Streptomyces solisilvae and demonstrated its antibacterial activity against Gram-positive pathogens including Streptococcus pneumoniae, Staphylococcus aureus and methicillin-resistant Staphylococcus aureus (MRSA). We further showed that combination of azalomycin F4a with methicillin has an additive antimicrobial effect on MRSA, where the minimal inhibitory concentrations (MIC) of methicillin to MRSA was decreased by 1000-fold in the presence of sublethal concentration of azalomycin F4a. A CRISPRi-seq based whole genome screen was employed to identify the potential targets of azalomycin F4a, which revealed that peptidoglycan synthesis (PGS) was inhibited by azalomycin F4a. Furthermore, azalomycin F4a treatment could significantly impair S. aureus biofilm formation. Our research highlights that cell wall synthesis is an additional target for novel classes of macrolide besides ribosome.
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Affiliation(s)
- Yachun Zhou
- School of Medicine, Southern University of Science and Technology, Shenzhen 518055, China; Shenzhen Third People's Hospital, National Clinical Research Centre for Infectious Disease, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen 518112, China
| | - Yue Song
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yu Zhang
- Department of Pathogen Biology, Base for International Science and Technology Cooperation: Carson Cancer Stem Cell Vaccines R&D Centre, International Cancer Centre, Shenzhen University Health Science Centre, Shenzhen 518055, China
| | - Xue Liu
- Department of Pathogen Biology, Base for International Science and Technology Cooperation: Carson Cancer Stem Cell Vaccines R&D Centre, International Cancer Centre, Shenzhen University Health Science Centre, Shenzhen 518055, China
| | - Lei Liu
- Shenzhen Third People's Hospital, National Clinical Research Centre for Infectious Disease, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen 518112, China.
| | - Yanmin Bao
- Department of Respiratory Diseases, Shenzhen Children's Hospital, Shenzhen 518031, Guangdong, China
| | - Junfeng Wang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Liang Yang
- School of Medicine, Southern University of Science and Technology, Shenzhen 518055, China; Shenzhen Third People's Hospital, National Clinical Research Centre for Infectious Disease, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen 518112, China.
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7
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Li FKK, Worrall LJ, Gale RT, Brown ED, Strynadka NCJ. Cryo-EM analysis of S. aureus TarL, a polymerase in wall teichoic acid biogenesis central to virulence and antibiotic resistance. SCIENCE ADVANCES 2024; 10:eadj3864. [PMID: 38416829 PMCID: PMC10901376 DOI: 10.1126/sciadv.adj3864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 01/23/2024] [Indexed: 03/01/2024]
Abstract
Wall teichoic acid (WTA), a covalent adduct of Gram-positive bacterial cell wall peptidoglycan, contributes directly to virulence and antibiotic resistance in pathogenic species. Polymerization of the Staphylococcus aureus WTA ribitol-phosphate chain is catalyzed by TarL, a member of the largely uncharacterized TagF-like family of membrane-associated enzymes. We report the cryo-electron microscopy structure of TarL, showing a tetramer that forms an extensive membrane-binding platform of monotopic helices. TarL is composed of an amino-terminal immunoglobulin-like domain and a carboxyl-terminal glycosyltransferase-B domain for ribitol-phosphate polymerization. The active site of the latter is complexed to donor substrate cytidine diphosphate-ribitol, providing mechanistic insights into the catalyzed phosphotransfer reaction. Furthermore, the active site is surrounded by electropositive residues that serve to retain the lipid-linked acceptor for polymerization. Our data advance general insight into the architecture and membrane association of the still poorly characterized monotopic membrane protein class and present molecular details of ribitol-phosphate polymerization that may aid in the design of new antimicrobials.
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Affiliation(s)
- Franco K K Li
- Department of Biochemistry and Molecular Biology, The University of British Columbia, Vancouver, British Columbia, Canada
- Centre for Blood Research, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Liam J Worrall
- Department of Biochemistry and Molecular Biology, The University of British Columbia, Vancouver, British Columbia, Canada
- Centre for Blood Research, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Robert T Gale
- Department of Biochemistry and Biomedical Sciences, Michael G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, Canada
| | - Eric D Brown
- Department of Biochemistry and Biomedical Sciences, Michael G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, Canada
| | - Natalie C J Strynadka
- Department of Biochemistry and Molecular Biology, The University of British Columbia, Vancouver, British Columbia, Canada
- Centre for Blood Research, The University of British Columbia, Vancouver, British Columbia, Canada
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8
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Jiang JH, Cameron DR, Nethercott C, Aires-de-Sousa M, Peleg AY. Virulence attributes of successful methicillin-resistant Staphylococcus aureus lineages. Clin Microbiol Rev 2023; 36:e0014822. [PMID: 37982596 PMCID: PMC10732075 DOI: 10.1128/cmr.00148-22] [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] [Indexed: 11/21/2023] Open
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) is a leading cause of severe and often fatal infections. MRSA epidemics have occurred in waves, whereby a previously successful lineage has been replaced by a more fit and better adapted lineage. Selection pressures in both hospital and community settings are not uniform across the globe, which has resulted in geographically distinct epidemiology. This review focuses on the mechanisms that trigger the establishment and maintenance of current, dominant MRSA lineages across the globe. While the important role of antibiotic resistance will be mentioned throughout, factors which influence the capacity of S. aureus to colonize and cause disease within a host will be the primary focus of this review. We show that while MRSA possesses a diverse arsenal of toxins including alpha-toxin, the success of a lineage involves more than just producing toxins that damage the host. Success is often attributed to the acquisition or loss of genetic elements involved in colonization and niche adaptation such as the arginine catabolic mobile element, as well as the activity of regulatory systems, and shift metabolism accordingly (e.g., the accessory genome regulator, agr). Understanding exactly how specific MRSA clones cause prolonged epidemics may reveal targets for therapies, whereby both core (e.g., the alpha toxin) and acquired virulence factors (e.g., the Panton-Valentine leukocidin) may be nullified using anti-virulence strategies.
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Affiliation(s)
- Jhih-Hang Jiang
- Department of Microbiology, Infection Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Victoria, Australia
| | - David R. Cameron
- Department of Biomedical Research, University of Bern, Bern, Switzerland
| | - Cara Nethercott
- Department of Microbiology, Infection Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
| | - Marta Aires-de-Sousa
- Laboratory of Molecular Genetics, Institutode Tecnologia Químicae Biológica António Xavier (ITQB-NOVA), Universidade Nova de Lisboa, Oeiras, Portugal
- Escola Superior de Saúde da Cruz Vermelha Portuguesa-Lisboa (ESSCVP-Lisboa), Lisbon, Portugal
| | - Anton Y. Peleg
- Department of Microbiology, Infection Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Victoria, Australia
- Centre to Impact Antimicrobial Resistance, Monash University, Clayton, Melbourne, Victoria, Australia
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9
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Guo Y, Du X, Krusche J, Beck C, Ali S, Walter A, Winstel V, Mayer C, Codée JD, Peschel A, Stehle T. Invasive Staphylococcus epidermidis uses a unique processive wall teichoic acid glycosyltransferase to evade immune recognition. SCIENCE ADVANCES 2023; 9:eadj2641. [PMID: 38000019 PMCID: PMC10672168 DOI: 10.1126/sciadv.adj2641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 10/26/2023] [Indexed: 11/26/2023]
Abstract
Staphylococcus epidermidis expresses glycerol phosphate wall teichoic acid (WTA), but some health care-associated methicillin-resistant S. epidermidis (HA-MRSE) clones produce a second, ribitol phosphate (RboP) WTA, resembling that of the aggressive pathogen Staphylococcus aureus. RboP-WTA promotes HA-MRSE persistence and virulence in bloodstream infections. We report here that the TarM enzyme of HA-MRSE [TarM(Se)] glycosylates RboP-WTA with glucose, instead of N-acetylglucosamine (GlcNAc) by TarM(Sa) in S. aureus. Replacement of GlcNAc with glucose in RboP-WTA impairs HA-MRSE detection by human immunoglobulin G, which may contribute to the immune-evasion capacities of many invasive S. epidermidis. Crystal structures of complexes with uridine diphosphate glucose (UDP-glucose), and with UDP and glycosylated poly(RboP), reveal the binding mode and glycosylation mechanism of this enzyme and explain why TarM(Se) and TarM(Sa) link different sugars to poly(RboP). These structural data provide evidence that TarM(Se) is a processive WTA glycosyltransferase. Our study will support the targeted inhibition of TarM enzymes, and the development of RboP-WTA targeting vaccines and phage therapies.
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Affiliation(s)
- Yinglan Guo
- Interfaculty Institute of Biochemistry, University of Tübingen, Tübingen, Germany
- Cluster of Excellence “Controlling Microbes to Fight Infections (CMFI)”, University of Tübingen, Tübingen, Germany
| | - Xin Du
- Cluster of Excellence “Controlling Microbes to Fight Infections (CMFI)”, University of Tübingen, Tübingen, Germany
- Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Infection Biology, University of Tübingen, Tübingen, Germany
- German Centre for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany
| | - Janes Krusche
- Cluster of Excellence “Controlling Microbes to Fight Infections (CMFI)”, University of Tübingen, Tübingen, Germany
- Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Infection Biology, University of Tübingen, Tübingen, Germany
- German Centre for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany
| | - Christian Beck
- Cluster of Excellence “Controlling Microbes to Fight Infections (CMFI)”, University of Tübingen, Tübingen, Germany
- Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Infection Biology, University of Tübingen, Tübingen, Germany
- German Centre for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany
| | - Sara Ali
- Leiden Institute of Chemistry, Leiden University, Leiden, Netherlands
| | - Axel Walter
- Cluster of Excellence “Controlling Microbes to Fight Infections (CMFI)”, University of Tübingen, Tübingen, Germany
- Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Organismic Interactions/Glycobiology, University of Tübingen, Tübingen, Germany
| | - Volker Winstel
- Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Infection Biology, University of Tübingen, Tübingen, Germany
- German Centre for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany
| | - Christoph Mayer
- Cluster of Excellence “Controlling Microbes to Fight Infections (CMFI)”, University of Tübingen, Tübingen, Germany
- Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Organismic Interactions/Glycobiology, University of Tübingen, Tübingen, Germany
| | | | - Andreas Peschel
- Cluster of Excellence “Controlling Microbes to Fight Infections (CMFI)”, University of Tübingen, Tübingen, Germany
- Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Infection Biology, University of Tübingen, Tübingen, Germany
- German Centre for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany
| | - Thilo Stehle
- Interfaculty Institute of Biochemistry, University of Tübingen, Tübingen, Germany
- Cluster of Excellence “Controlling Microbes to Fight Infections (CMFI)”, University of Tübingen, Tübingen, Germany
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10
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Zhao L, Wei F, He X, Dai A, Yang D, Jiang H, Wen L, Cheng X. Identification of a carbohydrate recognition motif of purinergic receptors. eLife 2023; 12:e85449. [PMID: 37955640 PMCID: PMC10642967 DOI: 10.7554/elife.85449] [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: 12/08/2022] [Accepted: 10/08/2023] [Indexed: 11/14/2023] Open
Abstract
As a major class of biomolecules, carbohydrates play indispensable roles in various biological processes. However, it remains largely unknown how carbohydrates directly modulate important drug targets, such as G-protein coupled receptors (GPCRs). Here, we employed P2Y purinoceptor 14 (P2Y14), a drug target for inflammation and immune responses, to uncover the sugar nucleotide activation of GPCRs. Integrating molecular dynamics simulation with functional study, we identified the uridine diphosphate (UDP)-sugar-binding site on P2Y14, and revealed that a UDP-glucose might activate the receptor by bridging the transmembrane (TM) helices 2 and 7. Between TM2 and TM7 of P2Y14, a conserved salt bridging chain (K2.60-D2.64-K7.35-E7.36 [KDKE]) was identified to distinguish different UDP-sugars, including UDP-glucose, UDP-galactose, UDP-glucuronic acid, and UDP-N-acetylglucosamine. We identified the KDKE chain as a conserved functional motif of sugar binding for both P2Y14 and P2Y purinoceptor 12 (P2Y12), and then designed three sugar nucleotides as agonists of P2Y12. These results not only expand our understanding for activation of purinergic receptors but also provide insights for the carbohydrate drug development for GPCRs.
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Affiliation(s)
- Lifen Zhao
- State Key Laboratory of Drug Research, Carbohydrate-Based Drug Research Center and National Center for Drug Screening, Shanghai Institute of Materia Medica, Chinese Academy of SciencesShanghaiChina
| | - Fangyu Wei
- State Key Laboratory of Drug Research, Carbohydrate-Based Drug Research Center and National Center for Drug Screening, Shanghai Institute of Materia Medica, Chinese Academy of SciencesShanghaiChina
- University of Chinese Academy of SciencesBeijingChina
| | - Xinheng He
- State Key Laboratory of Drug Research, Carbohydrate-Based Drug Research Center and National Center for Drug Screening, Shanghai Institute of Materia Medica, Chinese Academy of SciencesShanghaiChina
- University of Chinese Academy of SciencesBeijingChina
| | - Antao Dai
- State Key Laboratory of Drug Research, Carbohydrate-Based Drug Research Center and National Center for Drug Screening, Shanghai Institute of Materia Medica, Chinese Academy of SciencesShanghaiChina
| | - Dehua Yang
- State Key Laboratory of Drug Research, Carbohydrate-Based Drug Research Center and National Center for Drug Screening, Shanghai Institute of Materia Medica, Chinese Academy of SciencesShanghaiChina
- University of Chinese Academy of SciencesBeijingChina
| | - Hualiang Jiang
- State Key Laboratory of Drug Research, Carbohydrate-Based Drug Research Center and National Center for Drug Screening, Shanghai Institute of Materia Medica, Chinese Academy of SciencesShanghaiChina
- University of Chinese Academy of SciencesBeijingChina
- School of Pharmaceutical Science and Technology, Hangzhou Institute of Advanced StudyHangzhouChina
| | - Liuqing Wen
- State Key Laboratory of Drug Research, Carbohydrate-Based Drug Research Center and National Center for Drug Screening, Shanghai Institute of Materia Medica, Chinese Academy of SciencesShanghaiChina
- University of Chinese Academy of SciencesBeijingChina
| | - Xi Cheng
- State Key Laboratory of Drug Research, Carbohydrate-Based Drug Research Center and National Center for Drug Screening, Shanghai Institute of Materia Medica, Chinese Academy of SciencesShanghaiChina
- University of Chinese Academy of SciencesBeijingChina
- School of Pharmaceutical Science and Technology, Hangzhou Institute of Advanced StudyHangzhouChina
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11
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Slavetinsky J, Lehmann E, Slavetinsky C, Gritsch L, van Dalen R, Kretschmer D, Bleul L, Wolz C, Weidenmaier C, Peschel A. Wall Teichoic Acid Mediates Staphylococcus aureus Binding to Endothelial Cells via the Scavenger Receptor LOX-1. ACS Infect Dis 2023; 9:2133-2140. [PMID: 37910786 DOI: 10.1021/acsinfecdis.3c00252] [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: 11/03/2023]
Abstract
The success of Staphylococcus aureus as a major cause for endovascular infections depends on effective interactions with blood-vessel walls. We have previously shown that S. aureus uses its wall teichoic acid (WTA), a surface glycopolymer, to attach to endothelial cells. However, the endothelial WTA receptor remained unknown. We show here that the endothelial oxidized low-density lipoprotein receptor 1 (LOX-1) interacts with S. aureus WTA and permits effective binding of S. aureus to human endothelial cells. Purified LOX-1 bound to isolated S. aureus WTA. Ectopic LOX-1 expression led to increased binding of S. aureus wild type but not of a WTA-deficient mutant to a cell line, and LOX-1 blockage prevented S. aureus binding to endothelial cells. Moreover, WTA and LOX-1 expression levels correlated with the efficacy of the S. aureus-endothelial interaction. Thus, LOX-1 is an endothelial ligand for S. aureus, whose blockage may help to prevent or treat severe endovascular infections.
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Affiliation(s)
- Jessica Slavetinsky
- Interfaculty Institute of Microbiology and Infection Medicine, University of Tübingen, Tübingen72076, Germany
- Cluster of Excellence EXC 2124 "Controlling Microbes to Fight Infections", University of Tübingen, Tübingen 72076, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen 72076 , Germany
| | - Esther Lehmann
- Interfaculty Institute of Microbiology and Infection Medicine, University of Tübingen, Tübingen72076, Germany
- Cluster of Excellence EXC 2124 "Controlling Microbes to Fight Infections", University of Tübingen, Tübingen 72076, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen 72076 , Germany
| | - Christoph Slavetinsky
- Interfaculty Institute of Microbiology and Infection Medicine, University of Tübingen, Tübingen72076, Germany
- Cluster of Excellence EXC 2124 "Controlling Microbes to Fight Infections", University of Tübingen, Tübingen 72076, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen 72076 , Germany
- Pediatric Surgery and Urology, University Children's Hospital Tübingen, Tübingen 72076, Germany
| | - Lisa Gritsch
- Interfaculty Institute of Microbiology and Infection Medicine, University of Tübingen, Tübingen72076, Germany
- Cluster of Excellence EXC 2124 "Controlling Microbes to Fight Infections", University of Tübingen, Tübingen 72076, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen 72076 , Germany
| | - Rob van Dalen
- Interfaculty Institute of Microbiology and Infection Medicine, University of Tübingen, Tübingen72076, Germany
- Cluster of Excellence EXC 2124 "Controlling Microbes to Fight Infections", University of Tübingen, Tübingen 72076, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen 72076 , Germany
| | - Dorothee Kretschmer
- Interfaculty Institute of Microbiology and Infection Medicine, University of Tübingen, Tübingen72076, Germany
- Cluster of Excellence EXC 2124 "Controlling Microbes to Fight Infections", University of Tübingen, Tübingen 72076, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen 72076 , Germany
| | - Lisa Bleul
- Interfaculty Institute of Microbiology and Infection Medicine, University of Tübingen, Tübingen72076, Germany
- Cluster of Excellence EXC 2124 "Controlling Microbes to Fight Infections", University of Tübingen, Tübingen 72076, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen 72076 , Germany
| | - Christiane Wolz
- Interfaculty Institute of Microbiology and Infection Medicine, University of Tübingen, Tübingen72076, Germany
- Cluster of Excellence EXC 2124 "Controlling Microbes to Fight Infections", University of Tübingen, Tübingen 72076, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen 72076 , Germany
| | - Christopher Weidenmaier
- Interfaculty Institute of Microbiology and Infection Medicine, University of Tübingen, Tübingen72076, Germany
- Cluster of Excellence EXC 2124 "Controlling Microbes to Fight Infections", University of Tübingen, Tübingen 72076, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen 72076 , Germany
| | - Andreas Peschel
- Interfaculty Institute of Microbiology and Infection Medicine, University of Tübingen, Tübingen72076, Germany
- Cluster of Excellence EXC 2124 "Controlling Microbes to Fight Infections", University of Tübingen, Tübingen 72076, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen 72076 , Germany
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12
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Schami A, Islam MN, Belisle JT, Torrelles JB. Drug-resistant strains of Mycobacterium tuberculosis: cell envelope profiles and interactions with the host. Front Cell Infect Microbiol 2023; 13:1274175. [PMID: 38029252 PMCID: PMC10664572 DOI: 10.3389/fcimb.2023.1274175] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 10/02/2023] [Indexed: 12/01/2023] Open
Abstract
In the past few decades, drug-resistant (DR) strains of Mycobacterium tuberculosis (M.tb), the causative agent of tuberculosis (TB), have become increasingly prevalent and pose a threat to worldwide public health. These strains range from multi (MDR) to extensively (XDR) drug-resistant, making them very difficult to treat. Further, the current and future impact of the Coronavirus Disease 2019 (COVID-19) pandemic on the development of DR-TB is still unknown. Although exhaustive studies have been conducted depicting the uniqueness of the M.tb cell envelope, little is known about how its composition changes in relation to drug resistance acquisition. This knowledge is critical to understanding the capacity of DR-M.tb strains to resist anti-TB drugs, and to inform us on the future design of anti-TB drugs to combat these difficult-to-treat strains. In this review, we discuss the complexities of the M.tb cell envelope along with recent studies investigating how M.tb structurally and biochemically changes in relation to drug resistance. Further, we will describe what is currently known about the influence of M.tb drug resistance on infection outcomes, focusing on its impact on fitness, persister-bacteria, and subclinical TB.
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Affiliation(s)
- Alyssa Schami
- Population Health Program, Texas Biomedical Research Institute, San Antonio, TX, United States
- Integrated Biomedical Sciences Program, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States
| | - M. Nurul Islam
- Mycobacteria Research Laboratories, Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, CO, United States
| | - John T. Belisle
- Mycobacteria Research Laboratories, Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, CO, United States
| | - Jordi B. Torrelles
- Population Health Program, Texas Biomedical Research Institute, San Antonio, TX, United States
- International Center for the Advancement of Research & Education, International Center for the Advancement of Research & Education, Texas Biomedical Research Institute, San Antonio, TX, United States
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13
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Yang J, Bowring JZ, Krusche J, Lehmann E, Bejder BS, Silva SF, Bojer MS, Grunert T, Peschel A, Ingmer H. Cross-species communication via agr controls phage susceptibility in Staphylococcus aureus. Cell Rep 2023; 42:113154. [PMID: 37725513 DOI: 10.1016/j.celrep.2023.113154] [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: 04/09/2023] [Revised: 08/06/2023] [Accepted: 09/01/2023] [Indexed: 09/21/2023] Open
Abstract
Bacteria use quorum sensing (QS) to coordinate group behavior in response to cell density, and some bacterial viruses (phages) also respond to QS. In Staphylococcus aureus, the agr-encoded QS system relies on accumulation of auto-inducing cyclic peptides (AIPs). Other staphylococci also produce AIPs of which many inhibit S. aureus agr. We show that agr induction reduces expression of tarM, encoding a glycosyltransferase responsible for α-N-acetylglucosamine modification of the major S. aureus phage receptor, the wall teichoic acids. This allows lytic phage Stab20 and related phages to infect and kill S. aureus. However, in mixed communities, producers of inhibitory AIPs like S. haemolyticus, S. caprae, and S. pseudintermedius inhibit S. aureus agr, thereby impeding phage infection. Our results demonstrate that cross-species interactions dramatically impact phage susceptibility. These interactions likely influence microbial ecology and impact the efficacy of phages in medical and biotechnological applications such as phage therapy.
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Affiliation(s)
- Jingxian Yang
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 1870 Copenhagen, Denmark
| | - Janine Zara Bowring
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 1870 Copenhagen, Denmark
| | - Janes Krusche
- Department of Infection Biology, Interfaculty Institute for Microbiology and Infection Medicine Tübingen (IMIT), University of Tübingen, 72076 Tübingen, Germany; Cluster of Excellence "Controlling Microbes to Fight Infections (CMFI)," German Center for Infection Research (DZIF), Tübingen, Germany
| | - Esther Lehmann
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 1870 Copenhagen, Denmark
| | - Benjamin Svejdal Bejder
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, 2100 Copenhagen, Denmark
| | - Stephanie Fulaz Silva
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 1870 Copenhagen, Denmark
| | - Martin Saxtorph Bojer
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 1870 Copenhagen, Denmark
| | - Tom Grunert
- Functional Microbiology, Institute of Microbiology, Department of Pathobiology, University of Veterinary Medicine, 1210 Vienna, Austria
| | - Andreas Peschel
- Department of Infection Biology, Interfaculty Institute for Microbiology and Infection Medicine Tübingen (IMIT), University of Tübingen, 72076 Tübingen, Germany; Cluster of Excellence "Controlling Microbes to Fight Infections (CMFI)," German Center for Infection Research (DZIF), Tübingen, Germany
| | - Hanne Ingmer
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 1870 Copenhagen, Denmark.
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14
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Hockenberry A, Slack E, Stadtmueller BM. License to Clump: Secretory IgA Structure-Function Relationships Across Scales. Annu Rev Microbiol 2023; 77:645-668. [PMID: 37713459 DOI: 10.1146/annurev-micro-032521-041803] [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] [Indexed: 09/17/2023]
Abstract
Secretory antibodies are the only component of our adaptive immune system capable of attacking mucosal pathogens topologically outside of our bodies. All secretory antibody classes are (a) relatively resistant to harsh proteolytic environments and (b) polymeric. Recent elucidation of the structure of secretory IgA (SIgA) has begun to shed light on SIgA functions at the nanoscale. We can now begin to unravel the structure-function relationships of these molecules, for example, by understanding how the bent conformation of SIgA enables robust cross-linking between adjacent growing bacteria. Many mysteries remain, such as the structural basis of protease resistance and the role of noncanonical bacteria-IgA interactions. In this review, we explore the structure-function relationships of IgA from the nano- to the metascale, with a strong focus on how the seemingly banal "license to clump" can have potent effects on bacterial physiology and colonization.
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Affiliation(s)
- Alyson Hockenberry
- Department of Environmental Microbiology, Swiss Federal Institute of Aquatic Science and Technology (EAWAG), Dübendorf, Switzerland
- Department of Environmental Systems Science (D-USYS), ETH Zürich, Zürich, Switzerland;
| | - Emma Slack
- Department of Health Sciences and Technology, ETH Zürich, Zürich, Switzerland;
- Botnar Research Centre for Child Health, Basel, Switzerland
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
| | - Beth M Stadtmueller
- Department of Biochemistry, Center for Biophysics and Quantitative Biology, and Carl R. Woese Institute for Genomic Biology, University of Illinois, Urbana, Illinois, USA;
- Department of Biomedical and Translational Sciences, Carle Illinois College of Medicine, University of Illinois, Urbana, Illinois, USA
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15
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Zhang H, Li X, Liu X, Ji X, Ma X, Chen J, Bao Y, Zhang Y, Xu L, Yang L, Wei X. The usnic acid derivative peziculone targets cell walls of Gram-positive bacteria revealed by high-throughput CRISPRi-seq analysis. Int J Antimicrob Agents 2023; 62:106876. [PMID: 37276892 DOI: 10.1016/j.ijantimicag.2023.106876] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 05/10/2023] [Accepted: 05/31/2023] [Indexed: 06/07/2023]
Abstract
Usnic acid, a representative dibenzofuran metabolite, is known to have antimicrobial properties. However, despite considerable interest as an antimicrobial agent, the mechanism by which usnic acid and its derivatives exert their action is not fully characterized. This article describes the synthesis of peziculone, a 5:1 equilibrium mixture of two inseparable usnic acid derivatives: peziculone A and peziculone B. The antibacterial activity of peziculone against several Gram-positive bacterial pathogens was found to be significantly better compared with usnic acid. Clustered regularly interspaced short palindromic repeats interference sequencing analysis and membrane fluorescent staining were used to demonstrate that peziculone destabilizes the cell walls of Gram-positive bacteria. Additionally, peziculone 2.5 and 3.5 µg/mL impaired cell surface appendages and biofilm formation by Staphylococcus aureus. Taken together, these data demonstrate that peziculone, a derivative compound of usnic acid, has significant antimicrobial activity against Gram-positive bacteria by targeting the cell walls; this provides a platform for development of novel antibacterial drugs.
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Affiliation(s)
- Han Zhang
- School of Life Sciences, Huizhou University, Huizhou, People's Republic of China; School of Medicine, Southern University of Science and Technology, Shenzhen, Guangdong, People's Republic of China; Shenzhen Third People's Hospital, National Clinical Research Centre for Infectious Disease, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, People's Republic of China
| | - Xiaojie Li
- School of Life Sciences, Huizhou University, Huizhou, People's Republic of China
| | - Xue Liu
- Department of Pathogen Biology, Base for International Science and Technology Cooperation: Carson Cancer Stem Cell Vaccines R&D Centre, International Cancer Centre, Shenzhen University Health Science Centre, Shenzhen, People's Republic of China
| | - Xia Ji
- School of Life Sciences, Huizhou University, Huizhou, People's Republic of China
| | - Xuan Ma
- South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, People's Republic of China
| | - Jun Chen
- Shenzhen Third People's Hospital, National Clinical Research Centre for Infectious Disease, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, People's Republic of China
| | - Yanmin Bao
- Department of Respiratory Diseases, Shenzhen Children's Hospital, Shenzhen, Guangdong, People's Republic of China
| | - Yingdan Zhang
- School of Medicine, Southern University of Science and Technology, Shenzhen, Guangdong, People's Republic of China; Shenzhen Third People's Hospital, National Clinical Research Centre for Infectious Disease, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, People's Republic of China
| | - Liangxiong Xu
- School of Life Sciences, Huizhou University, Huizhou, People's Republic of China.
| | - Liang Yang
- School of Medicine, Southern University of Science and Technology, Shenzhen, Guangdong, People's Republic of China; Shenzhen Third People's Hospital, National Clinical Research Centre for Infectious Disease, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, People's Republic of China.
| | - Xiaoyi Wei
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement / Guangdong Provincial Key Laboratory of Digital Botanical Garden and Public Science, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, People's Republic of China
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16
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Zhang J, Tu J, Chen Y, Jin X. Clinical characteristics and homology analysis of Staphylococcus aureus from would infection at a tertiary hospital in southern Zhejiang, China. BMC Microbiol 2023; 23:217. [PMID: 37573311 PMCID: PMC10422768 DOI: 10.1186/s12866-023-02921-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Accepted: 06/28/2023] [Indexed: 08/14/2023] Open
Abstract
OBJECTIVE Staphylococcus aureus (S. aureus), especially Methicillin resistant S. aureus (MRSA), has been disseminated across communities and hospitals, associated with severe infections and organ failure. In order to understand the clinical epidemiological characteristics of S. aureus stains in the First Affiliated Hospital of Wenzhou Medical University in 2018, the prevalence and the drug resistance of S. aureus stains were investigated, for improving the clinical effective prevention and control of S. aureus infection. METHODS A total of 105 S. aureus isolates were separated from wound infection of inpatients in the First Affiliated Hospital of Wenzhou Medical University in 2018, and the department distributions and drug resistance of the isolates were analyzed. The genotyping homology analysis was conducted through the random amplified polymorphic DNA typing (RAPD-PCR) coupled with NTSYS cluster analysis. RESULTS Among the 105 strains of S. aureus, 31 isolates were MRSA. The prevalence of MRSA among inpatients in the Departments of Burn, Trauma, Orthopedics, Nephrology and Neurosurgery were 35.48%, 19.35%, 9.68%, 6.45%, and 29.03%, respectively. Among the 105 strains, 35.24% strains were the hospital-acquired infections (HAI) and 64.76% strains were community-acquired infections (CAI). DNA genotyping of the 105 S. aureus strains showed seventeen different groups, most of which were type I, type VII, type IX, and type VII, the others were scattered. CONCLUSION This study highlights the prevalence of S. aureus strains in the First Affiliated Hospital of Wenzhou Medical University in 2018. The emergence and mutation of the strains should be closely monitored for the prevention and control of the S. aureus infection and transmission in the nosocomial settings.
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Affiliation(s)
- Jiarong Zhang
- Department of Nosocomial Infection Prevention and Control, the First Affiliated Hospital of Wenzhou Medical University, Ouhai District, Wenzhou, Zhejiang, 325000, China
| | - Jingjing Tu
- The Key Laboratory of Diagnosis and Controlment for the Development of Chronic Liver Disease of Zhejiang Province, Ouhai District, Wenzhou, Zhejiang, 325000, China
| | - Yongping Chen
- The Key Laboratory of Diagnosis and Controlment for the Development of Chronic Liver Disease of Zhejiang Province, Ouhai District, Wenzhou, Zhejiang, 325000, China.
- Department of Infectious Diseases, the First Affiliated Hospital of Wenzhou Medical University, Ouhai District, Wenzhou, Zhejiang, 325000, China.
| | - Xiaoya Jin
- Department of Nosocomial Infection Prevention and Control, the First Affiliated Hospital of Wenzhou Medical University, Ouhai District, Wenzhou, Zhejiang, 325000, China.
- The Key Laboratory of Diagnosis and Controlment for the Development of Chronic Liver Disease of Zhejiang Province, Ouhai District, Wenzhou, Zhejiang, 325000, China.
- Department of Infectious Diseases, the First Affiliated Hospital of Wenzhou Medical University, Ouhai District, Wenzhou, Zhejiang, 325000, China.
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Cifuente JO, Schulze J, Bethe A, Di Domenico V, Litschko C, Budde I, Eidenberger L, Thiesler H, Ramón Roth I, Berger M, Claus H, D'Angelo C, Marina A, Gerardy-Schahn R, Schubert M, Guerin ME, Fiebig T. A multi-enzyme machine polymerizes the Haemophilus influenzae type b capsule. Nat Chem Biol 2023; 19:865-877. [PMID: 37277468 PMCID: PMC10299916 DOI: 10.1038/s41589-023-01324-3] [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: 07/13/2022] [Accepted: 03/31/2023] [Indexed: 06/07/2023]
Abstract
Bacterial capsules have critical roles in host-pathogen interactions. They provide a protective envelope against host recognition, leading to immune evasion and bacterial survival. Here we define the capsule biosynthesis pathway of Haemophilus influenzae serotype b (Hib), a Gram-negative bacterium that causes severe infections in infants and children. Reconstitution of this pathway enabled the fermentation-free production of Hib vaccine antigens starting from widely available precursors and detailed characterization of the enzymatic machinery. The X-ray crystal structure of the capsule polymerase Bcs3 reveals a multi-enzyme machine adopting a basket-like shape that creates a protected environment for the synthesis of the complex Hib polymer. This architecture is commonly exploited for surface glycan synthesis by both Gram-negative and Gram-positive pathogens. Supported by biochemical studies and comprehensive 2D nuclear magnetic resonance, our data explain how the ribofuranosyltransferase CriT, the phosphatase CrpP, the ribitol-phosphate transferase CroT and a polymer-binding domain function as a unique multi-enzyme assembly.
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Affiliation(s)
- Javier O Cifuente
- Structural Glycobiology Laboratory, Biocruces Bizkaia Health Research Institute, Cruces University Hospital, Barakaldo, Spain
- Structural Glycobiology Laboratory, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Derio, Spain
| | - Julia Schulze
- Institute of Clinical Biochemistry, Hannover Medical School, Hannover, Germany
| | - Andrea Bethe
- Institute of Clinical Biochemistry, Hannover Medical School, Hannover, Germany
| | - Valerio Di Domenico
- Structural Glycobiology Laboratory, Biocruces Bizkaia Health Research Institute, Cruces University Hospital, Barakaldo, Spain
| | - Christa Litschko
- Institute of Clinical Biochemistry, Hannover Medical School, Hannover, Germany
| | - Insa Budde
- Institute of Clinical Biochemistry, Hannover Medical School, Hannover, Germany
| | - Lukas Eidenberger
- Department of Applied Genetics and Cell Biology, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Hauke Thiesler
- Institute of Clinical Biochemistry, Hannover Medical School, Hannover, Germany
| | - Isabel Ramón Roth
- Institute of Clinical Biochemistry, Hannover Medical School, Hannover, Germany
| | - Monika Berger
- Institute of Clinical Biochemistry, Hannover Medical School, Hannover, Germany
| | - Heike Claus
- Institute for Hygiene and Microbiology, University of Würzburg, Würzburg, Germany
| | - Cecilia D'Angelo
- Structural Glycobiology Laboratory, Biocruces Bizkaia Health Research Institute, Cruces University Hospital, Barakaldo, Spain
- Structural Glycobiology Laboratory, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Derio, Spain
| | - Alberto Marina
- Structural Glycobiology Laboratory, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Derio, Spain
| | - Rita Gerardy-Schahn
- Institute of Clinical Biochemistry, Hannover Medical School, Hannover, Germany
| | - Mario Schubert
- Department of Biosciences and Medical Biology, University of Salzburg, Salzburg, Austria
| | - Marcelo E Guerin
- Structural Glycobiology Laboratory, Biocruces Bizkaia Health Research Institute, Cruces University Hospital, Barakaldo, Spain.
- Structural Glycobiology Laboratory, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Derio, Spain.
- Ikerbasque Basque Foundation for Science, Bilbao, Spain.
| | - Timm Fiebig
- Institute of Clinical Biochemistry, Hannover Medical School, Hannover, Germany.
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18
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Xu Y, Huo J, Nie R, Ge L, Xie C, Meng Y, Liu J, Wu L, Qin X. Altered profile of glycosylated proteins in serum samples obtained from patients with Hashimoto's thyroiditis following depletion of highly abundant proteins. Front Immunol 2023; 14:1182842. [PMID: 37457741 PMCID: PMC10348014 DOI: 10.3389/fimmu.2023.1182842] [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: 03/09/2023] [Accepted: 06/16/2023] [Indexed: 07/18/2023] Open
Abstract
Objectives Hashimoto's thyroiditis (HT) is one of the most common autoimmune disorders; however, its underlying pathological mechanisms remain unclear. Although aberrant glycosylation has been implicated in the N-glycome of immunoglobulin G (IgG), changes in serum proteins have not been comprehensively characterized. This study aimed to investigate glycosylation profiles in serum samples depleted of highly abundant proteins from patients with HT and propose the potential functions of glycoproteins for further studies on the pathological mechanisms of HT. Methods A lectin microarray containing 70 lectins was used to detect and analyze glycosylation of serum proteins using serum samples (N=27 HT; N=26 healthy control [HC]) depleted of abundant proteins. Significant differences in glycosylation status between HT patients and the HC group were verified using lectin blot analysis. A lectin-based pull-down assay combined with mass spectrometry was used to investigate potential glycoproteins combined with differentially present lectins, and an enzyme-linked immunosorbent assay (ELISA) was used to identify the expression of targeted glycoproteins in 131 patients with papillary thyroid carcinoma (PTC), 131 patients with benign thyroid nodules (BTN) patients, 130 patients with HT, and 128 HCs. Results Compared with the HC group, the majority of the lectin binding signals in HT group were weakened, while the Vicia villosa agglutinin (VVA) binding signal was increased. The difference in VVA binding signals verified by lectin blotting was consistent with the results of the lectin microarray. A total of 113 potential VVA-binding glycoproteins were identified by mass spectrometry and classified by gene ontology (GO) and Kyoto encyclopedia of genes and genomes (KEGG) analyses. Using ELISA, we confirmed that lactoferrin (LTF) and mannan-binding lectin-associated serine protease 1 (MASP-1) levels were elevated in the serum of patients with HT and PTC. Conclusion Following depletion of abundant proteins, remaining serum proteins in HT patients exhibited lower glycosylation levels than those observed in HCs. An increased level of potential VVA-binding glycoproteins may play an important role in HT development. LTF and MASP-1 expression was significantly higher in the serum of HT and PTC patients, providing novel insight into HT and PTC.
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Affiliation(s)
- Yaozheng Xu
- Department of Laboratory Medicine, Shengjing Hospital of China Medical University, Shenyang, China
- Liaoning Clinical Research Center for Laboratory Medicine, Shenyang, China
| | - Jiawen Huo
- Department of Laboratory Medicine, Shengjing Hospital of China Medical University, Shenyang, China
- Liaoning Clinical Research Center for Laboratory Medicine, Shenyang, China
| | - Ruili Nie
- Department of Laboratory Medicine, Shengjing Hospital of China Medical University, Shenyang, China
- Liaoning Clinical Research Center for Laboratory Medicine, Shenyang, China
| | - Lili Ge
- Department of Laboratory Medicine, Shengjing Hospital of China Medical University, Shenyang, China
- Liaoning Clinical Research Center for Laboratory Medicine, Shenyang, China
| | - Chonghong Xie
- Department of Laboratory Medicine, Shengjing Hospital of China Medical University, Shenyang, China
- Liaoning Clinical Research Center for Laboratory Medicine, Shenyang, China
| | - Yuan Meng
- Department of Laboratory Medicine, Shengjing Hospital of China Medical University, Shenyang, China
- Liaoning Clinical Research Center for Laboratory Medicine, Shenyang, China
| | - Jianhua Liu
- Department of Laboratory Medicine, Shengjing Hospital of China Medical University, Shenyang, China
- Liaoning Clinical Research Center for Laboratory Medicine, Shenyang, China
| | - Lina Wu
- Department of Laboratory Medicine, Shengjing Hospital of China Medical University, Shenyang, China
- Liaoning Clinical Research Center for Laboratory Medicine, Shenyang, China
| | - Xiaosong Qin
- Department of Laboratory Medicine, Shengjing Hospital of China Medical University, Shenyang, China
- Liaoning Clinical Research Center for Laboratory Medicine, Shenyang, China
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19
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Shen P, Zheng L, Qin X, Li D, Zhang Z, Zhao J, Lin H, Hong H, Zhou Z, Wu Z. Synthesis of structure-defined β-1,4-GlcNAc-modified wall teichoic acids as potential vaccine against methicillin-resistant Staphylococcus aureus. Eur J Med Chem 2023; 258:115553. [PMID: 37336068 DOI: 10.1016/j.ejmech.2023.115553] [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: 02/12/2023] [Revised: 06/08/2023] [Accepted: 06/08/2023] [Indexed: 06/21/2023]
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) is a high priority pathogen due to its life-threating infections to human health. Development of prophylactic or therapeutic anti-MRSA vaccine is a potential approach to treat S. aureus infections and overcome the resistance crisis. β-1,4-GlcNAc glycosylated wall teichoic acids (WTAs) derived from S. aureus are a new type of antigen that is closely associated with β-lactam resistance. In this study, structure-defined β-1,4-GlcNAc-modified WTAs varied in chain length and numbers of GlcNAc modification were synthesized by an ionic liquid-supported oligosaccharide synthesis (ILSOS) strategy in high efficiency and chromatography-free approach. Then the obtained WTAs were conjugated with tetanus toxin (TT) as vaccine candidates and were further evaluated in a mouse model to determine the structure-immunogenicity relationship. In vivo immunological studies revealed that the WTAs-TT conjugates provoked robust T cell-dependent responses and elicited high levels of specific anti-WTAs IgG antibodies production associated with the WTAs structure including chain length as well as the β-1,4-GlcNAc modification pattern. Heptamer WTAs conjugate T6, carrying three copy of β-1,4-GlcNAc modified RboP, was identified to elicit the highest titers of specific antibody production. The T6 antisera exhibited the highest recognition and binding affinity and the most potent OP-killing activities to MSSA and MRSA cells. This study demonstrated that β-1,4-GlcNAc glycosylated WTAs are promising antigens for further development against MRSA.
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Affiliation(s)
- Peng Shen
- Key Laboratory of Carbohydrate Chemistry & Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Lele Zheng
- Key Laboratory of Carbohydrate Chemistry & Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Xinfang Qin
- Key Laboratory of Carbohydrate Chemistry & Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Dan Li
- Key Laboratory of Carbohydrate Chemistry & Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Zijiang Zhang
- Key Laboratory of Carbohydrate Chemistry & Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Jie Zhao
- Key Laboratory of Carbohydrate Chemistry & Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Han Lin
- Key Laboratory of Carbohydrate Chemistry & Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Haofei Hong
- Key Laboratory of Carbohydrate Chemistry & Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Zhifang Zhou
- Key Laboratory of Carbohydrate Chemistry & Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Zhimeng Wu
- Key Laboratory of Carbohydrate Chemistry & Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China.
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20
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Dai J, Battini N, Zang Z, Luo Y, Zhou C. Novel Thiazolylketenyl Quinazolinones as Potential Anti-MRSA Agents and Allosteric Modulator for PBP2a. Molecules 2023; 28:molecules28104240. [PMID: 37241983 DOI: 10.3390/molecules28104240] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 05/16/2023] [Accepted: 05/17/2023] [Indexed: 05/28/2023] Open
Abstract
Bacterial infections caused by methicillin-resistant Staphylococcus aureus have seriously threatened public health. There is an urgent need to propose an existing regimen to overcome multidrug resistance of MRSA. A unique class of novel anti-MRSA thiazolylketenyl quinazolinones (TQs) and their analogs were developed. Some synthesized compounds showed good bacteriostatic potency. Especially TQ 4 was found to exhibit excellent inhibition against MRSA with a low MIC of 0.5 μg/mL, which was 8-fold more effective than norfloxacin. The combination of TQ 4 with cefdinir showed stronger antibacterial potency. Further investigation revealed that TQ 4, with low hemolytic toxicity and low drug resistance, was not only able to inhibit biofilm formation but also could reduce MRSA metabolic activity and showed good drug-likeness. Mechanistic explorations revealed that TQ 4 could cause leakage of proteins by disrupting membrane integrity and block DNA replication by intercalated DNA. Furthermore, the synergistic antibacterial effect with cefdinir might be attributed to TQ 4 with the ability to induce PBP2a allosteric regulation of MRSA and further trigger the opening of the active site to promote the binding of cefdinir to the active site, thus inhibiting the expression of PBP2a, thereby overcoming MRSA resistance and significantly enhancing the anti-MRSA activity of cefdinir. A new strategy provided by these findings was that TQ 4, possessing both excellent anti-MRSA activity and allosteric effect of PBP2a, merited further development as a novel class of antibacterial agents to overcome increasingly severe MRSA infections.
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Affiliation(s)
- Jie Dai
- Institute of Bioorganic & Medicinal Chemistry, Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Narsaiah Battini
- Institute of Bioorganic & Medicinal Chemistry, Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Zhonglin Zang
- Institute of Bioorganic & Medicinal Chemistry, Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Yan Luo
- College of Pharmacy, National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, Chongqing Key Laboratory of Kinase Modulators as Innovative Medicine, Chongqing University of Arts and Sciences, Chongqing 402160, China
| | - Chenghe Zhou
- Institute of Bioorganic & Medicinal Chemistry, Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
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21
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Qi X, Shen N, Al Othman A, Mezentsev A, Permyakova A, Yu Z, Lepoitevin M, Serre C, Durymanov M. Metal-Organic Framework-Based Nanomedicines for the Treatment of Intracellular Bacterial Infections. Pharmaceutics 2023; 15:pharmaceutics15051521. [PMID: 37242762 DOI: 10.3390/pharmaceutics15051521] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 05/13/2023] [Accepted: 05/16/2023] [Indexed: 05/28/2023] Open
Abstract
Metal-organic frameworks (MOFs) are a highly versatile class of ordered porous materials, which hold great promise for different biomedical applications, including antibacterial therapy. In light of the antibacterial effects, these nanomaterials can be attractive for several reasons. First, MOFs exhibit a high loading capacity for numerous antibacterial drugs, including antibiotics, photosensitizers, and/or photothermal molecules. The inherent micro- or meso-porosity of MOF structures enables their use as nanocarriers for simultaneous encapsulation of multiple drugs resulting in a combined therapeutic effect. In addition to being encapsulated into an MOF's pores, antibacterial agents can sometimes be directly incorporated into an MOF skeleton as organic linkers. Next, MOFs contain coordinated metal ions in their structure. Incorporation of Fe2/3+, Cu2+, Zn2+, Co2+, and Ag+ can significantly increase the innate cytotoxicity of these materials for bacteria and cause a synergistic effect. Finally, abundance of functional groups enables modifying the external surface of MOF particles with stealth coating and ligand moieties for improved drug delivery. To date, there are a number of MOF-based nanomedicines available for the treatment of bacterial infections. This review is focused on biomedical consideration of MOF nano-formulations designed for the therapy of intracellular infections such as Staphylococcus aureus, Mycobacterium tuberculosis, and Chlamydia trachomatis. Increasing knowledge about the ability of MOF nanoparticles to accumulate in a pathogen intracellular niche in the host cells provides an excellent opportunity to use MOF-based nanomedicines for the eradication of persistent infections. Here, we discuss advantages and current limitations of MOFs, their clinical significance, and their prospects for the treatment of the mentioned infections.
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Affiliation(s)
- Xiaoli Qi
- Moscow Institute of Physics and Technology, 141701 Dolgoprudny, Russia
| | - Ningfei Shen
- Moscow Institute of Physics and Technology, 141701 Dolgoprudny, Russia
| | - Aya Al Othman
- Moscow Institute of Physics and Technology, 141701 Dolgoprudny, Russia
| | | | | | - Zhihao Yu
- Institute of Porous Materials from Paris (IMAP), Ecole Normale Supérieure, ESPCI Paris, CNRS, PSL University, 75006 Paris, France
| | - Mathilde Lepoitevin
- Institute of Porous Materials from Paris (IMAP), Ecole Normale Supérieure, ESPCI Paris, CNRS, PSL University, 75006 Paris, France
| | - Christian Serre
- Institute of Porous Materials from Paris (IMAP), Ecole Normale Supérieure, ESPCI Paris, CNRS, PSL University, 75006 Paris, France
| | - Mikhail Durymanov
- Moscow Institute of Physics and Technology, 141701 Dolgoprudny, Russia
- Faculty of Chemistry, Lomonosov Moscow State University, 119234 Moscow, Russia
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22
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Controlled processivity in glycosyltransferases: A way to expand the enzymatic toolbox. Biotechnol Adv 2023; 63:108081. [PMID: 36529206 DOI: 10.1016/j.biotechadv.2022.108081] [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: 08/16/2022] [Revised: 11/20/2022] [Accepted: 12/11/2022] [Indexed: 12/23/2022]
Abstract
Glycosyltransferases (GT) catalyse the biosynthesis of complex carbohydrates which are the most abundant group of molecules in nature. They are involved in several key mechanisms such as cell signalling, biofilm formation, host immune system invasion or cell structure and this in both prokaryotic and eukaryotic cells. As a result, research towards complete enzyme mechanisms is valuable to understand and elucidate specific structure-function relationships in this group of molecules. In a next step this knowledge could be used in GT protein engineering, not only for rational drug design but also for multiple biotechnological production processes, such as the biosynthesis of hyaluronan, cellooligosaccharides or chitooligosaccharides. Generation of these poly- and/or oligosaccharides is possible due to a common feature of several of these GTs: processivity. Enzymatic processivity has the ability to hold on to the growing polymer chain and some of these GTs can even control the number of glycosyl transfers. In a first part, recent advances in understanding the mechanism of various processive enzymes are discussed. To this end, an overview is given of possible engineering strategies for the purpose of new industrial and fundamental applications. In the second part of this review, we focused on specific chain length-controlling mechanisms, i.e., key residues or conserved regions, and this for both eukaryotic and prokaryotic enzymes.
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23
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Ran W, Yue Y, Long F, Zhong K, Bai J, Xiao Y, Bu Q, Huang Y, Wu Y, Gao H. Antibacterial Mechanism of 2R,3R-Dihydromyricetin Against Staphylococcus aureus: Deciphering Inhibitory Effect on Biofilm and Virulence Based on Transcriptomic and Proteomic Analyses. Foodborne Pathog Dis 2023; 20:90-99. [PMID: 36862127 DOI: 10.1089/fpd.2022.0075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023] Open
Abstract
Staphylococcus aureus is a major foodborne pathogen that leads to various diseases due to its biofilm and virulence factors. This study aimed to investigate the inhibitory effect of 2R,3R-dihydromyricetin (DMY), a natural flavonoid compound, on the biofilm formation and virulence of S. aureus, and to explore the mode of action using transcriptomic and proteomic analyses. Microscopic observation revealed that DMY could remarkably inhibit the biofilm formation by S. aureus, leading to a collapse on the biofilm architecture and a decrease in viability of biofilm cell. Moreover, the hemolytic activity of S. aureus was reduced to 32.7% after treatment with subinhibitory concentration of DMY (p < 0.01). Bioinformation analysis based on RNA-sequencing and proteomic profiling revealed that DMY induced 262 differentially expressed genes and 669 differentially expressed proteins (p < 0.05). Many downregulated genes and proteins related to surface proteins were involved in biofilm formation, including clumping factor A (ClfA), iron-regulated surface determinants (IsdA, IsdB, and IsdC), fibrinogen-binding proteins (FnbA, FnbB), and serine protease. Meanwhile, DMY regulated a wide range of genes and proteins enriched in bacterial pathogenesis, cell envelope, amino acid metabolism, purine and pyrimidine metabolism, and pyruvate metabolism. These findings suggest that DMY targets S. aureus through multifarious mechanisms, and especially prompt that interference of surface proteins in cell envelope would lead to attenuation of biofilm and virulence.
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Affiliation(s)
- Wenyi Ran
- Department of Food Engineering, College of Biomass Science and Engineering and Healthy Food Evaluation Research Center, Sichuan University, Chengdu, China
| | - Yuxi Yue
- Department of Food Engineering, College of Biomass Science and Engineering and Healthy Food Evaluation Research Center, Sichuan University, Chengdu, China
| | - Feiwu Long
- Department of Hygienic Toxicology and Pathology, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, China.,Research Center for Nutrition, Metabolism and Food Safety, West China-PUMC C.C. Chen Institute of Health, Sichuan University, Chengdu, China
| | - Kai Zhong
- Department of Food Engineering, College of Biomass Science and Engineering and Healthy Food Evaluation Research Center, Sichuan University, Chengdu, China
| | - Jinrong Bai
- Department of Hygienic Toxicology and Pathology, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, China.,Research Center for Nutrition, Metabolism and Food Safety, West China-PUMC C.C. Chen Institute of Health, Sichuan University, Chengdu, China
| | - Yue Xiao
- Department of Hygienic Toxicology and Pathology, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, China.,Research Center for Nutrition, Metabolism and Food Safety, West China-PUMC C.C. Chen Institute of Health, Sichuan University, Chengdu, China
| | - Qian Bu
- Department of Hygienic Toxicology and Pathology, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, China.,Research Center for Nutrition, Metabolism and Food Safety, West China-PUMC C.C. Chen Institute of Health, Sichuan University, Chengdu, China
| | - Yina Huang
- Department of Hygienic Toxicology and Pathology, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, China.,Research Center for Nutrition, Metabolism and Food Safety, West China-PUMC C.C. Chen Institute of Health, Sichuan University, Chengdu, China
| | - Yanping Wu
- Department of Food Engineering, College of Biomass Science and Engineering and Healthy Food Evaluation Research Center, Sichuan University, Chengdu, China
| | - Hong Gao
- Department of Food Engineering, College of Biomass Science and Engineering and Healthy Food Evaluation Research Center, Sichuan University, Chengdu, China
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24
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Liu CC, Lin MH. Hitchhiking motility of Staphylococcus aureus involves the interaction between its wall teichoic acids and lipopolysaccharide of Pseudomonas aeruginosa. Front Microbiol 2023; 13:1068251. [PMID: 36687638 PMCID: PMC9849799 DOI: 10.3389/fmicb.2022.1068251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 12/13/2022] [Indexed: 01/07/2023] Open
Abstract
Staphylococcus aureus, which lacks pili and flagella, is nonmotile. However, it hitchhikes motile bacteria, such as Pseudomonas aeruginosa, to migrate in the environment. This study demonstrated that the hitchhiking motility of S. aureus SA113 was reduced after the tagO, which encodes an enzyme for wall teichoic acids (WTA) synthesis, was deleted. The hitchhiking motility was restored after the mutation was complemented by transforming a plasmid expressing TagO into the mutant. We also showed that adding purified lipopolysaccharide (LPS) to a culture that contains S. aureus SA113 and P. aeruginosa PAO1, reduced the movement of S. aureus, showing that WTA and LPS are involved in the hitchhiking motility of S. aureus. This study also found that P. aeruginosa promoted the movement of S. aureus in the digestive tract of Caenorhabditis elegans and in mice. In conclusion, this study reveals how S. aureus hitchhikes P. aeruginosa for translocation in an ecosystem. The results from this study improve our understanding on how a nonmotile pathogen moves in the environment and spreads in animals.
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Affiliation(s)
- Chao-Chin Liu
- 1Graduate Institute of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan
| | - Mei-Hui Lin
- 1Graduate Institute of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan,2Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan,3Department of Laboratory Medicine, Chang Gung Memorial Hospital, Taoyuan, Taiwan,*Correspondence: Mei-Hui Lin, ✉
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25
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Tamminga SM, Völpel SL, Schipper K, Stehle T, Pannekoek Y, van Sorge NM. Genetic diversity of Staphylococcus aureus wall teichoic acid glycosyltransferases affects immune recognition. Microb Genom 2022; 8:mgen000902. [PMID: 36748528 PMCID: PMC9837562 DOI: 10.1099/mgen.0.000902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Staphylococcus aureus is a leading cause of skin and soft tissue infections and systemic infections. Wall teichoic acids (WTAs) are cell wall-anchored glycopolymers that are important for S. aureus nasal colonization, phage-mediated horizontal gene transfer, and antibiotic resistance. WTAs consist of a polymerized ribitol phosphate (RboP) chain that can be glycosylated with N-acetylglucosamine (GlcNAc) by three glycosyltransferases: TarS, TarM, and TarP. TarS and TarP modify WTA with β-linked GlcNAc at the C-4 (β1,4-GlcNAc) and the C-3 position (β1,3-GlcNAc) of the RboP subunit, respectively, whereas TarM modifies WTA with α-linked GlcNAc at the C-4 position (α1,4-GlcNAc). Importantly, these WTA glycosylation patterns impact immune recognition and clearance of S. aureus. Previous studies suggest that tarS is near-universally present within the S. aureus population, whereas a smaller proportion co-contain either tarM or tarP. To gain more insight into the presence and genetic variation of tarS, tarM and tarP in the S. aureus population, we analysed a collection of 25 652 S. aureus genomes within the PubMLST database. Over 99 % of isolates contained tarS. Co-presence of tarS/tarM or tarS/tarP occurred in 37 and 7 % of isolates, respectively, and was associated with specific S. aureus clonal complexes. We also identified 26 isolates (0.1 %) that contained all three glycosyltransferase genes. At sequence level, we identified tar alleles with amino acid substitutions in critical enzymatic residues or with premature stop codons. Several tar variants were expressed in a S. aureus tar-negative strain. Analysis using specific monoclonal antibodies and human langerin showed that WTA glycosylation was severely attenuated or absent. Overall, our data provide a broad overview of the genetic diversity of the three WTA glycosyltransferases in the S. aureus population and the functional consequences for immune recognition.
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Affiliation(s)
- Sara M. Tamminga
- Department of Medical Microbiology and Infection Prevention, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Simon L. Völpel
- Interfaculty Institute of Biochemistry, University of Tübingen, Tübingen, Germany
| | - Kim Schipper
- Department of Medical Microbiology and Infection Prevention, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Thilo Stehle
- Interfaculty Institute of Biochemistry, University of Tübingen, Tübingen, Germany,Department of Pediatrics, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Yvonne Pannekoek
- Department of Medical Microbiology and Infection Prevention, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands,*Correspondence: Nina M. van Sorge,
| | - Nina M. van Sorge
- Department of Medical Microbiology and Infection Prevention, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands,Netherlands Reference Laboratory for Bacterial Meningitis, Amsterdam UMC, Amsterdam, The Netherlands,*Correspondence: Nina M. van Sorge,
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26
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Wang Z, Wang L, Bian H, Huang Z, Zhang X, Xiao Y. Outer Surface-Labeled Bacteria as Live Sensors Accurately Quantitating Interfacial pH: A Smart Technique for Antimicrobial Resistance. ACS NANO 2022; 16:18344-18354. [PMID: 36373972 DOI: 10.1021/acsnano.2c06226] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The techniques to quantitatively monitor environmental factors surrounding the bacterial outer surface rather than the host's subcellular regions (e.g., lysosomes) should be the key to evaluate bacterial immune escape behavior. We report wild Staphylococcus aureus (SA) and methicillin-resistant Staphylococcus aureus (MRSA) labeled with a fluorescent resonance energy transfer probe, 4SR-L-BDP, on their outer surfaces as smart live sensors to quantify interfacial pH. The dual emission of 4SR-L-BDP affords high sensitivity to pH change in a ratiometric way in the pH range of 4-8 with high precision. Notably, 4SR-L-BDP possesses an anchoring group to fix on the bacterial surface for sensing the microenvironment encountered. Super-resolution imaging clearly demonstrates the specific labeling of bacterial membranes. These live sensors are applied in two-channel ratiometric imaging to dynamically visualize and quantify their interfacial pH changes during infection of macrophages. It is found that the interfacial pH of MRSA is lower by 0.2 units compared to that of SA. Such small but critical difference in pH reflects MRSA's ability to adapt to microenvironmental pH inside macrophages. These labeled bacteria as live sensors are also proven to be practically applicable in mice models with immune deficiency and immune activation.
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Affiliation(s)
- Zehui Wang
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Lai Wang
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Hui Bian
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Zhenlong Huang
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Xinfu Zhang
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Yi Xiao
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Dalian University of Technology, Dalian 116024, China
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Influence of Staphylococcus aureus Strain Background on Sa3int Phage Life Cycle Switches. Viruses 2022; 14:v14112471. [PMID: 36366569 PMCID: PMC9694928 DOI: 10.3390/v14112471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 11/04/2022] [Indexed: 11/09/2022] Open
Abstract
Staphylococcus aureus asymptomatically colonizes the nasal cavity of mammals, but it is also a leading cause of life-threatening infections. Most human nasal isolates carry Sa3 phages, which integrate into the bacterial hlb gene encoding a sphingomyelinase. The virulence factor-encoding genes carried by the Sa3-phages are highly human-specific, and most animal strains are Sa3 negative. Thus, both insertion and excision of the prophage could potentially confer a fitness advantage to S. aureus. Here, we analyzed the phage life cycle of two Sa3 phages, Φ13 and ΦN315, in different phage-cured S. aureus strains. Based on phage transfer experiments, strains could be classified into low (8325-4, SH1000, and USA300c) and high (MW2c and Newman-c) transfer strains. High-transfer strains promoted the replication of phages, whereas phage adsorption, integration, excision, or recA transcription was not significantly different between strains. RNASeq analyses of replication-deficient lysogens revealed no strain-specific differences in the CI/Mor regulatory switch. However, lytic genes were significantly upregulated in the high transfer strain MW2c Φ13 compared to strain 8325-4 Φ13. By transcriptional start site prediction, new promoter regions within the lytic modules were identified, which are likely targeted by specific host factors. Such host-phage interaction probably accounts for the strain-specific differences in phage replication and transfer frequency. Thus, the genetic makeup of the host strains may determine the rate of phage mobilization, a feature that might impact the speed at which certain strains can achieve host adaptation.
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28
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Gerlach D, Sieber RN, Larsen J, Krusche J, De Castro C, Baumann J, Molinaro A, Peschel A. Horizontal transfer and phylogenetic distribution of the immune evasion factor tarP. Front Microbiol 2022; 13:951333. [PMID: 36386695 PMCID: PMC9650247 DOI: 10.3389/fmicb.2022.951333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 09/12/2022] [Indexed: 11/29/2022] Open
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA), a major human pathogen, uses the prophage-encoded tarP gene as an important immune evasion factor. TarP glycosylates wall teichoic acid (WTA) polymers, major S. aureus surface antigens, to impair WTA immunogenicity and impede host defence. However, tarP phages appear to be restricted to only a few MRSA clonal lineages, including clonal complexes (CC) 5 and 398, for unknown reasons. We demonstrate here that tarP-encoding prophages can be mobilized to lysogenize other S. aureus strains. However, transfer is largely restricted to closely related clones. Most of the non-transducible clones encode tarM, which generates a WTA glycosylation pattern distinct from that mediated by TarP. However, tarM does not interfere with infection by tarP phages. Clonal complex-specific Type I restriction-modification systems were the major reasons for resistance to tarP phage infection. Nevertheless, tarP phages were found also in unrelated S. aureus clones indicating that tarP has the potential to spread to distant clonal lineages and contribute to the evolution of new MRSA clones.
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Affiliation(s)
- David Gerlach
- Interfaculty Institute of Microbiology and Infection Medicine, Infection Biology Section, University of Tübingen, Tübingen, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany
- Cluster of Excellence EXC2124 Controlling Microbes to Fight Infection, University of Tübingen, Tübingen, Germany
| | | | | | - Janes Krusche
- Interfaculty Institute of Microbiology and Infection Medicine, Infection Biology Section, University of Tübingen, Tübingen, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany
- Cluster of Excellence EXC2124 Controlling Microbes to Fight Infection, University of Tübingen, Tübingen, Germany
| | | | - Juliane Baumann
- Interfaculty Institute of Microbiology and Infection Medicine, Infection Biology Section, University of Tübingen, Tübingen, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany
- Cluster of Excellence EXC2124 Controlling Microbes to Fight Infection, University of Tübingen, Tübingen, Germany
| | - Antonio Molinaro
- Department of Chemical Sciences, University of Naples, Naples, Italy
| | - Andreas Peschel
- Interfaculty Institute of Microbiology and Infection Medicine, Infection Biology Section, University of Tübingen, Tübingen, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany
- Cluster of Excellence EXC2124 Controlling Microbes to Fight Infection, University of Tübingen, Tübingen, Germany
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29
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Di Carluccio C, Soriano-Maldonado P, Berni F, de Haas CJC, Temming AR, Hendriks A, Ali S, Molinaro A, Silipo A, van Sorge NM, van Raaij MJ, Codee JDC, Marchetti R. Antibody Recognition of Different Staphylococcus aureus Wall Teichoic Acid Glycoforms. ACS CENTRAL SCIENCE 2022; 8:1383-1392. [PMID: 36313161 PMCID: PMC9615122 DOI: 10.1021/acscentsci.2c00125] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Indexed: 05/14/2023]
Abstract
Wall teichoic acids (WTAs) are glycopolymers decorating the surface of Gram-positive bacteria and potential targets for antibody-mediated treatments against Staphylococcus aureus, including methicillin-resistant (MRSA) strains. Through a combination of glycan microarray, synthetic chemistry, crystallography, NMR, and computational studies, we unraveled the molecular and structural details of fully defined synthetic WTA fragments recognized by previously described monoclonal antibodies (mAbs 4461 and 4497). Our results unveiled the structural requirements for the discriminatory recognition of α- and β-GlcNAc-modified WTA glycoforms by the complementarity-determining regions (CDRs) of the heavy and light chains of the mAbs. Both mAbs interacted not only with the sugar moiety but also with the phosphate groups as well as residues in the ribitol phosphate (RboP) units of the WTA backbone, highlighting their significant role in ligand specificity. Using elongated WTA fragments, containing two sugar modifications, we also demonstrated that the internal carbohydrate moiety of α-GlcNAc-modified WTA is preferentially accommodated in the binding pocket of mAb 4461 with respect to the terminal moiety. Our results also explained the recently documented cross-reactivity of mAb 4497 for β-1,3/β-1,4-GlcNAc-modified WTA, revealing that the flexibility of the RboP backbone is crucial to allow positioning of both glycans in the antibody binding pocket.
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Affiliation(s)
- Cristina Di Carluccio
- Department
of Chemical Sciences, University of Naples
Federico II, Via Cinthia 4, 80126Naples, Italy
| | - Pablo Soriano-Maldonado
- Departamento
de Estructura de Macromoléculas, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones
Científicas (CNB-CSIC), Calle Darwin 3, 28049Madrid, Spain
| | - Francesca Berni
- Leiden
Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CCLeiden, The Netherlands
| | - Carla J. C. de Haas
- Medical
Microbiology, UMC Utrecht, Utrecht University, 3508Utrecht, The Netherlands
| | - A. Robin Temming
- Department
of Medical Microbiology and Infection Prevention, Amsterdam UMC, University of Amsterdam, 1105 AZAmsterdam, The Netherlands
| | - Astrid Hendriks
- Department
of Medical Microbiology and Infection Prevention, Amsterdam UMC, University of Amsterdam, 1105 AZAmsterdam, The Netherlands
| | - Sara Ali
- Leiden
Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CCLeiden, The Netherlands
| | - Antonio Molinaro
- Department
of Chemical Sciences, University of Naples
Federico II, Via Cinthia 4, 80126Naples, Italy
| | - Alba Silipo
- Department
of Chemical Sciences, University of Naples
Federico II, Via Cinthia 4, 80126Naples, Italy
| | - Nina M. van Sorge
- Department
of Medical Microbiology and Infection Prevention, Amsterdam UMC, University of Amsterdam, 1105 AZAmsterdam, The Netherlands
- Netherlands
Reference Laboratory for Bacterial Meningitis, Amsterdam UMC, 1105 AZAmsterdam, The Netherlands
- Email
for N.M.v.S.:
| | - Mark J. van Raaij
- Departamento
de Estructura de Macromoléculas, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones
Científicas (CNB-CSIC), Calle Darwin 3, 28049Madrid, Spain
- Email for M.J.v.R.:
| | - Jeroen D. C. Codee
- Leiden
Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CCLeiden, The Netherlands
- Email for J.D.C.C.:
| | - Roberta Marchetti
- Department
of Chemical Sciences, University of Naples
Federico II, Via Cinthia 4, 80126Naples, Italy
- Email for R.M.:
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30
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Tsai CM, Caldera JR, Hajam IA, Chiang AWT, Tsai CH, Li H, Díez ML, Gonzalez C, Trieu D, Martins GA, Underhill DM, Arditi M, Lewis NE, Liu GY. Non-protective immune imprint underlies failure of Staphylococcus aureus IsdB vaccine. Cell Host Microbe 2022; 30:1163-1172.e6. [PMID: 35803276 PMCID: PMC9378590 DOI: 10.1016/j.chom.2022.06.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 05/10/2022] [Accepted: 06/09/2022] [Indexed: 12/25/2022]
Abstract
Humans frequently encounter Staphylococcus aureus (SA) throughout life. Animal studies have yielded SA candidate vaccines, yet all human SA vaccine trials have failed. One notable vaccine "failure" targeted IsdB, critical for host iron acquisition. We explored a fundamental difference between humans and laboratory animals-natural SA exposure. Recapitulating the failed phase III IsdB vaccine trial, mice previously infected with SA do not mount protective antibody responses to vaccination, unlike naive animals. Non-protective antibodies exhibit increased α2,3 sialylation that blunts opsonophagocytosis and preferentially targets a non-protective IsdB domain. IsdB vaccination of SA-infected mice recalls non-neutralizing humoral responses, further reducing vaccine efficacy through direct antibody competition. IsdB vaccine interference was overcome by immunization against the IsdB heme-binding domain. Purified human IsdB-specific antibodies also blunt IsdB passive immunization, and additional SA vaccines are susceptible to SA pre-exposure. Thus, failed anti-SA immunization trials could be explained by non-protective imprint from prior host-SA interaction.
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Affiliation(s)
- Chih-Ming Tsai
- Department of Pediatrics, University of California, San Diego, San Diego, CA 92093, USA
| | - J R Caldera
- Department of Pediatrics, University of California, San Diego, San Diego, CA 92093, USA; Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Irshad A Hajam
- Department of Pediatrics, University of California, San Diego, San Diego, CA 92093, USA
| | - Austin W T Chiang
- Department of Pediatrics, University of California, San Diego, San Diego, CA 92093, USA
| | - Chih-Hsiung Tsai
- Department of Life Sciences, National Cheng Kung University, Tainan 701, Taiwan
| | - Haining Li
- Department of Bioengineering, University of California, San Diego, San Diego, CA 92093, USA
| | - María Lázaro Díez
- Department of Pediatrics, University of California, San Diego, San Diego, CA 92093, USA
| | - Cesia Gonzalez
- Department of Pediatrics, University of California, San Diego, San Diego, CA 92093, USA
| | - Desmond Trieu
- Department of Pediatrics, University of California, San Diego, San Diego, CA 92093, USA
| | - Gislâine A Martins
- Research Division of Immunology, Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; F. Widjaja Foundation Inflammatory Bowel and Immunobiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - David M Underhill
- Research Division of Immunology, Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; F. Widjaja Foundation Inflammatory Bowel and Immunobiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Moshe Arditi
- Division of Pediatric Infectious Diseases, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Nathan E Lewis
- Department of Pediatrics, University of California, San Diego, San Diego, CA 92093, USA; Department of Bioengineering, University of California, San Diego, San Diego, CA 92093, USA
| | - George Y Liu
- Department of Pediatrics, University of California, San Diego, San Diego, CA 92093, USA; Division of Infectious Diseases, Rady Children's Hospital, San Diego, CA 92123, USA.
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31
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Du T, Cao J, Xiao Z, Liu J, Wei L, Li C, Jiao J, Song Z, Liu J, Du X, Wang S. Van-mediated self-aggregating photothermal agents combined with multifunctional magnetic nickel oxide nanoparticles for precise elimination of bacterial infections. J Nanobiotechnology 2022; 20:325. [PMID: 35836225 PMCID: PMC9281033 DOI: 10.1186/s12951-022-01535-1] [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: 03/11/2022] [Accepted: 06/24/2022] [Indexed: 11/23/2022] Open
Abstract
Building a novel and efficient photothermal antibacterial nanoplatform is a promising strategy for precise bacterial elimination. Herein, a nanocomposite NiO NPs@AuNPs@Van (NAV) for selective MRSA removal was constructed by electrostatic self-assembly of highly photothermal magnetic NiO NPs and vancomycin (Van)-modified gold nanoparticles (AuNPs). In the presence of MRSA and under NIR irradiation, Van-mediated AuNPs can self-aggregate on MRSA surface, generating photothermal effect in situ and killing 99.6% MRSA in conjunction with magnetic NiO NPs. Additionally, the photothermal efficiency can be improved by magnetic enrichment due to the excellent magnetism of NAV, thereby enhancing the bactericidal effect at a lower experimental dose. In vitro antibacterial experiments and full-thickness skin wound healing test demonstrated that this combination therapy could effectively accelerate wound healing in MRSA-infected mice, increase collagen coverage, reduce IL-6 and TNF-α content, and upregulate VEGF expression. Biological safety experiments confirmed that NAV has good biocompatibility in vivo and in vitro. Overall, this work reveals a new type of nanocomposite with enhanced photothermal antibacterial activity as a potential nano-antibacterial agent for treating bacteria-infected wounds.
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Affiliation(s)
- Ting Du
- State Key Laboratory of Food Nutrition and SafetyKey Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and EngineeringCollege of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China
| | - Jiangli Cao
- State Key Laboratory of Food Nutrition and SafetyKey Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and EngineeringCollege of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China
| | - Zehui Xiao
- State Key Laboratory of Food Nutrition and SafetyKey Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and EngineeringCollege of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China
| | - Jiaqi Liu
- State Key Laboratory of Food Nutrition and SafetyKey Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and EngineeringCollege of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China
| | - Lifei Wei
- State Key Laboratory of Food Nutrition and SafetyKey Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and EngineeringCollege of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China
| | - Chunqiao Li
- State Key Laboratory of Food Nutrition and SafetyKey Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and EngineeringCollege of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China
| | - Jingbo Jiao
- State Key Laboratory of Food Nutrition and SafetyKey Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and EngineeringCollege of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China
| | - Zhiyong Song
- College of Sicence, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Jifeng Liu
- State Key Laboratory of Food Nutrition and SafetyKey Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and EngineeringCollege of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China
| | - Xinjun Du
- State Key Laboratory of Food Nutrition and SafetyKey Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and EngineeringCollege of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China.
| | - Shuo Wang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, 300071, People's Republic of China.
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32
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Shen P, Lin H, Bao Y, Hong H, Wu Z. Synthesis and immunological study of a glycosylated wall teichoic acid-based vaccine against Staphylococcus aureus. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.07.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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33
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Del Bino L, Østerlid KE, Wu DY, Nonne F, Romano MR, Codée J, Adamo R. Synthetic Glycans to Improve Current Glycoconjugate Vaccines and Fight Antimicrobial Resistance. Chem Rev 2022; 122:15672-15716. [PMID: 35608633 PMCID: PMC9614730 DOI: 10.1021/acs.chemrev.2c00021] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Antimicrobial resistance (AMR) is emerging as the next potential pandemic. Different microorganisms, including the bacteria Acinetobacter baumannii, Clostridioides difficile, Escherichia coli, Enterococcus faecium, Klebsiella pneumoniae, Neisseria gonorrhoeae, Pseudomonas aeruginosa, non-typhoidal Salmonella, and Staphylococcus aureus, and the fungus Candida auris, have been identified by the WHO and CDC as urgent or serious AMR threats. Others, such as group A and B Streptococci, are classified as concerning threats. Glycoconjugate vaccines have been demonstrated to be an efficacious and cost-effective measure to combat infections against Haemophilus influenzae, Neisseria meningitis, Streptococcus pneumoniae, and, more recently, Salmonella typhi. Recent times have seen enormous progress in methodologies for the assembly of complex glycans and glycoconjugates, with developments in synthetic, chemoenzymatic, and glycoengineering methodologies. This review analyzes the advancement of glycoconjugate vaccines based on synthetic carbohydrates to improve existing vaccines and identify novel candidates to combat AMR. Through this literature survey we built an overview of structure-immunogenicity relationships from available data and identify gaps and areas for further research to better exploit the peculiar role of carbohydrates as vaccine targets and create the next generation of synthetic carbohydrate-based vaccines.
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Affiliation(s)
| | - Kitt Emilie Østerlid
- Leiden Institute of Chemistry, Leiden University, 2300 RA Leiden, The Netherlands
| | - Dung-Yeh Wu
- Leiden Institute of Chemistry, Leiden University, 2300 RA Leiden, The Netherlands
| | | | | | - Jeroen Codée
- Leiden Institute of Chemistry, Leiden University, 2300 RA Leiden, The Netherlands
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34
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Understanding the Mechanisms That Drive Phage Resistance in Staphylococci to Prevent Phage Therapy Failure. Viruses 2022; 14:v14051061. [PMID: 35632803 PMCID: PMC9146914 DOI: 10.3390/v14051061] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 05/11/2022] [Accepted: 05/13/2022] [Indexed: 02/07/2023] Open
Abstract
Despite occurring at the microscopic scale, the armed race between phages and their bacterial hosts involves multiple mechanisms, some of which are just starting to be understood. On the one hand, bacteria have evolved strategies that can stop the viral infection at different stages (adsorption, DNA injection and replication, biosynthesis and assembly of the viral progeny and/or release of the newly formed virions); on the other, phages have gradually evolved counterattack strategies that allow them to continue infecting their prey. This co-evolutionary process has played a major role in the development of microbial populations in both natural and man-made environments. Notably, understanding the parameters of this microscopic war will be paramount to fully benefit from the application of phage therapy against dangerous, antibiotic-resistant human pathogens. This review gathers the current knowledge regarding the mechanisms of phage resistance in the Staphylococcus genus, which includes Staphylococcus aureus, one of the most concerning microorganisms in terms of antibiotic resistance acquisition. Some of these strategies involve permanent changes to the bacterial cell via mutations, while others are transient, adaptive changes whose expression depends on certain environmental cues or the growth phase. Finally, we discuss the most plausible strategies to limit the impact of phage resistance on therapy, with a special emphasis on the importance of a rational design of phage cocktails in order to thwart therapeutic failure.
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35
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Tang H, Qu X, Zhang W, Chen X, Zhang S, Xu Y, Yang H, Wang Y, Yang J, Yuan WE, Yue B. Photosensitizer Nanodot Eliciting Immunogenicity for Photo-Immunologic Therapy of Postoperative Methicillin-Resistant Staphylococcus aureus Infection and Secondary Recurrence. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2107300. [PMID: 34865257 DOI: 10.1002/adma.202107300] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 11/11/2021] [Indexed: 06/13/2023]
Abstract
The treatment of postoperative infection caused by multidrug-resistant bacteria, such as methicillin-resistant Staphylococcus aureus (MRSA), has become an intractable clinical challenge owing to its low therapeutic efficacy and high risk of recurrence. Apart from imperfect antibacterial therapies, induction of insufficient immunogenicity, required for the successful clearance of a pathogen, may also contribute to the problem. Herein, an ultra-micro photosensitizer, AgB nanodots, using photothermal therapy, photodynamic therapy, and Ag+ ion sterilization, are utilized to efficiently clear invading MRSA both in vitro and in vivo. AgB nanodots are also found to upregulate host immunogenicity in a murine model and establish immunological memory by promoting the upregulated expression of danger signals that are commonly induced by stress-related responses, including sudden temperature spikes or excess reactive oxygen production. These stimulations boost the antibacterial effects of macrophages, dendritic cells, T cells, or even memory B cells, which is usually defined as infection-related immunogenic cell death. Hence, the proposed AgB nanodot strategy may offer a novel platform for the effective treatment of postoperative infection while providing a systematic immunotherapeutic strategy to combat persistent infections, thereby markedly reducing the incidence of recurrence following recovery from primary infections.
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Affiliation(s)
- Haozheng Tang
- Department of Bone and Joint Surgery, Department of Orthopedics, Renji Hospital, Shanghai Jiao Tong University School of Medicine, 145 Shandong Middle Road, Shanghai, 200001, P. R. China
| | - Xinhua Qu
- Department of Bone and Joint Surgery, Department of Orthopedics, Renji Hospital, Shanghai Jiao Tong University School of Medicine, 145 Shandong Middle Road, Shanghai, 200001, P. R. China
| | - Wenkai Zhang
- Pharm-X Center, Engineering Research Center of Cell & Therapeutic Antibody, Ministry of Education, School of Pharmacy, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Xuan Chen
- Pharm-X Center, Engineering Research Center of Cell & Therapeutic Antibody, Ministry of Education, School of Pharmacy, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Shutao Zhang
- Department of Bone and Joint Surgery, Department of Orthopedics, Renji Hospital, Shanghai Jiao Tong University School of Medicine, 145 Shandong Middle Road, Shanghai, 200001, P. R. China
| | - Yang Xu
- Pharm-X Center, Engineering Research Center of Cell & Therapeutic Antibody, Ministry of Education, School of Pharmacy, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Hongtao Yang
- Department of Plastic and Reconstructive Surgery, The Ohio State University, Columbus, OH, 43210, USA
- School of Medical Science and Engineering, Beihang University, Beijing, 100191, P. R. China
| | - You Wang
- Department of Bone and Joint Surgery, Department of Orthopedics, Renji Hospital, Shanghai Jiao Tong University School of Medicine, 145 Shandong Middle Road, Shanghai, 200001, P. R. China
| | - Jianping Yang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P. R. China
| | - Wei-En Yuan
- Pharm-X Center, Engineering Research Center of Cell & Therapeutic Antibody, Ministry of Education, School of Pharmacy, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Bing Yue
- Department of Bone and Joint Surgery, Department of Orthopedics, Renji Hospital, Shanghai Jiao Tong University School of Medicine, 145 Shandong Middle Road, Shanghai, 200001, P. R. China
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36
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Glycan-mediated molecular interactions in bacterial pathogenesis. Trends Microbiol 2022; 30:254-267. [PMID: 34274195 PMCID: PMC8758796 DOI: 10.1016/j.tim.2021.06.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 06/10/2021] [Accepted: 06/22/2021] [Indexed: 02/06/2023]
Abstract
Glycans are expressed on the surface of nearly all host and bacterial cells. Not surprisingly, glycan-mediated molecular interactions play a vital role in bacterial pathogenesis and host responses against pathogens. Glycan-mediated host-pathogen interactions can benefit the pathogen, host, or both. Here, we discuss (i) bacterial glycans that play a critical role in bacterial colonization and/or immune evasion, (ii) host glycans that are utilized by bacteria for pathogenesis, and (iii) bacterial and host glycans involved in immune responses against pathogens. We further discuss (iv) opportunities and challenges for transforming these research findings into more effective antibacterial strategies, and (v) technological advances in glycoscience that have helped to accelerate progress in research. These studies collectively offer valuable insights into new perspectives on antibacterial strategies that may effectively tackle the drug-resistant pathogens that are rapidly spreading globally.
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Xiong M, Chen L, Zhao J, Xiao X, Zhou J, Fang F, Li X, Pan Y, Li Y. Genomic Analysis of the Unusual Staphylococcus aureus ST630 Isolates Harboring WTA Glycosyltransferase Genes tarM and tagN. Microbiol Spectr 2022; 10:e0150121. [PMID: 35170993 PMCID: PMC8849055 DOI: 10.1128/spectrum.01501-21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Accepted: 01/26/2022] [Indexed: 12/25/2022] Open
Abstract
Staphylococcus aureus (S. aureus) can cause a broad spectrum of diseases ranging from skin infections to life-threatening diseases in both community and hospital settings. The surface-exposed wall teichoic acid (WTA) has a strong impact on host interaction, pathogenicity, horizontal gene transfer, and biofilm formation in S. aureus. The unusual S. aureus ST630 strains containing both ribitol-phosphate (RboP) WTA glycosyltransferase gene tarM and glycerol-phosphate (GroP) WTA glycosyltransferase gene tagN have been found recently. Native PAGE analysis showed that the WTA of tagN, tarM-encoding ST630 strains migrated slower than that of non-tagN-encoding ST630 strains, indicating the differences in WTA structure. Some mobile genetic elements (MGEs) such as the unique GroP-WTA biosynthetic gene cluster (SaGroWI), SCCmec element, and prophages that probably originated from the CoNS were identified in tagN, tarM-encoding ST630 strains. The SaGroWI element was first defined in S. aureus ST395 strain, which was refractory to exchange MGEs with typical RboP-WTA expressing S. aureus but could undergo horizontal gene transfer events with other species and genera via the specific bacteriophage Φ187. Overall, our data indicated that this rare ST630 was prone to acquire DNA from CoNS and might serve as a novel hub for the exchange of MGEs between CoNS and S. aureus. IMPORTANCE The structure of wall-anchored glycopolymers wall teichoic acid (WTA) produced by most Gram-positive bacteria is highly variable. While most dominant Staphylococcus aureus lineages produce poly-ribitol-phosphate (RboP) WTA, the tagN, tarM-encoding ST630 lineage probably has a poly-glycerol-phosphate (GroP) WTA backbone like coagulase-negative staphylococci (CoNS). There is growing evidence that staphylococcal horizontal gene transfer depends largely on transducing helper phages via WTA as the receptor. The structural difference of WTA greatly affects the transfer of mobile genetic elements among various bacteria. With the growing advances in sequencing and analysis technologies, genetic analysis has revolutionized research activities in the field of the important pathogen S. aureus. Here, we analyzed the molecular characteristics of ST630 and found an evolutionary link between ST630 and CoNS. Elucidating the genetic information of ST630 lineage will contribute to understanding the emergence and diversification of new pathogenic strains in S. aureus.
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Affiliation(s)
- Mengyuan Xiong
- Department of Laboratory Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Liangjun Chen
- Department of Laboratory Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Jin Zhao
- Department of Laboratory Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Xiao Xiao
- Department of Laboratory Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Junying Zhou
- Department of Laboratory Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Fang Fang
- Department of Laboratory Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Xinwei Li
- Medical School of Zhengzhou University, Zhengzhou, China
| | - Yunbao Pan
- Department of Laboratory Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
- Hubei Engineering Center for Infectious Disease Prevention, Control and Treatment, Wuhan, China
| | - Yirong Li
- Department of Laboratory Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
- Hubei Engineering Center for Infectious Disease Prevention, Control and Treatment, Wuhan, China
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Hou H, Li Y, Jin Y, Chen S, Long J, Duan G, Yang H. The crafty opponent: the defense systems of Staphylococcus aureus and response measures. Folia Microbiol (Praha) 2022; 67:233-243. [PMID: 35149955 DOI: 10.1007/s12223-022-00954-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 01/29/2022] [Indexed: 11/29/2022]
Abstract
Staphylococcus aureus is a serious threat to public health. S. aureus infection can cause acute or long-term persistent infections that are often resistant to antibiotics and are associated with high morbidity and death. Understanding the defensive systems of S. aureus can help clinicians make the best use of antimicrobial drugs and can also help with antimicrobial stewardship. The mechanisms and clinical implications of S. aureus defense systems, as well as potential response systems, were discussed in this study. Because resistance to all currently available antibiotics is unavoidable, new medicines are always being developed. Alternative techniques, such as anti-virulence and bacteriophage therapies, are being researched and may become major tools in the fight against staphylococcal infections in the future, in addition to the development of new small compounds that affect cell viability.
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Affiliation(s)
- Hongjie Hou
- Department of Epidemiology, School of Public Health, Zhengzhou University, No. 100 of Science Avenue, Zhengzhou, 450001, China
| | - Yang Li
- Department of Epidemiology, School of Public Health, Zhengzhou University, No. 100 of Science Avenue, Zhengzhou, 450001, China
| | - Yuefei Jin
- Department of Epidemiology, School of Public Health, Zhengzhou University, No. 100 of Science Avenue, Zhengzhou, 450001, China
| | - Shuaiyin Chen
- Department of Epidemiology, School of Public Health, Zhengzhou University, No. 100 of Science Avenue, Zhengzhou, 450001, China
| | - Jinzhao Long
- Department of Epidemiology, School of Public Health, Zhengzhou University, No. 100 of Science Avenue, Zhengzhou, 450001, China
| | - Guangcai Duan
- Department of Epidemiology, School of Public Health, Zhengzhou University, No. 100 of Science Avenue, Zhengzhou, 450001, China
| | - Haiyan Yang
- Department of Epidemiology, School of Public Health, Zhengzhou University, No. 100 of Science Avenue, Zhengzhou, 450001, China.
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Speciale I, Notaro A, Garcia-Vello P, Di Lorenzo F, Armiento S, Molinaro A, Marchetti R, Silipo A, De Castro C. Liquid-state NMR spectroscopy for complex carbohydrate structural analysis: A hitchhiker's guide. Carbohydr Polym 2022; 277:118885. [PMID: 34893288 DOI: 10.1016/j.carbpol.2021.118885] [Citation(s) in RCA: 43] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 10/23/2021] [Accepted: 11/09/2021] [Indexed: 11/19/2022]
Abstract
Structural determination of carbohydrates is mostly performed by liquid-state NMR, and it is a demanding task because the NMR signals of these biomolecules explore a rather narrow range of chemical shifts, with the result that the resonances of each monosaccharide unit heavily overlap with those of others, thus muddling their punctual identification. However, the full attribution of the NMR chemical shifts brings great advantages: it discloses the nature of the constituents, the way they are interconnected, in some cases their absolute configuration, and it paves the way to other and more sophisticated analyses. The purpose of this review is to provide a practical guide into this challenging subject. It will drive through the strategy used to assign the NMR data, pinpointing the core information disclosed from each NMR experiment, and suggesting useful tricks for their interpretation, along with other resources pivotal during the study of these biomolecules.
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Affiliation(s)
- Immacolata Speciale
- Department of Agricultural Sciences, University of Naples, 80055 Portici, Italy.
| | - Anna Notaro
- Department of Agricultural Sciences, University of Naples, 80055 Portici, Italy.
| | - Pilar Garcia-Vello
- Department of Chemical Sciences, University of Naples, 80126 Naples, Italy.
| | - Flaviana Di Lorenzo
- Department of Agricultural Sciences, University of Naples, 80055 Portici, Italy.
| | - Samantha Armiento
- Department of Chemical Sciences, University of Naples, 80126 Naples, Italy.
| | - Antonio Molinaro
- Department of Chemical Sciences, University of Naples, 80126 Naples, Italy.
| | - Roberta Marchetti
- Department of Chemical Sciences, University of Naples, 80126 Naples, Italy.
| | - Alba Silipo
- Department of Chemical Sciences, University of Naples, 80126 Naples, Italy.
| | - Cristina De Castro
- Department of Agricultural Sciences, University of Naples, 80055 Portici, Italy.
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Species-Scale Genomic Analysis of Staphylococcus aureus Genes Influencing Phage Host Range and Their Relationships to Virulence and Antibiotic Resistance Genes. mSystems 2022; 7:e0108321. [PMID: 35040700 PMCID: PMC8765062 DOI: 10.1128/msystems.01083-21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Phage therapy has been proposed as a possible alternative treatment for infections caused by the ubiquitous bacterial pathogen Staphylococcus aureus. However, successful therapy requires understanding the genetic basis of host range—the subset of strains in a species that could be killed by a particular phage. We searched diverse sets of S. aureus public genome sequences against a database of genes suggested from prior studies to influence host range to look for patterns of variation across the species. We found that genes encoding biosynthesis of molecules that were targets of S. aureus phage adsorption to the outer surface of the cell were the most conserved in the pangenome. Putative phage resistance genes that were core components of the pangenome genes had similar nucleotide diversity, ratio of nonsynonymous to synonymous substitutions, and functionality (measured by delta-bitscore) to other core genes. However, phage resistance genes that were not part of the core genome were significantly less consistent with the core genome phylogeny than all noncore genes in this set, suggesting more frequent movement between strains by horizontal gene transfer. Only superinfection immunity genes encoded by temperate phages inserted in the genome correlated with experimentally determined temperate phage resistance. Taken together, these results suggested that, while phage adsorption genes are heavily conserved in the S. aureus species, HGT may play a significant role in strain-specific evolution of host range patterns. IMPORTANCEStaphylococcus aureus is a widespread, hospital- and community-acquired pathogen that is commonly antibiotic resistant. It causes diverse diseases affecting both the skin and internal organs. Its ubiquity, antibiotic resistance, and disease burden make new therapies urgent, such as phage therapy, in which viruses specific to infecting bacteria clear infection. S. aureus phage host range not only determines whether phage therapy will be successful by killing bacteria but also horizontal gene transfer through transduction of host genetic material by phages. In this work, we comprehensively reviewed existing literature to build a list of S. aureus phage resistance genes and searched our database of almost 43,000 S. aureus genomes for these genes to understand their patterns of evolution, finding that prophages’ superinfection immunity correlates best with phage resistance and HGT. These findings improved our understanding of the relationship between known phage resistance genes and phage host range in the species.
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Synthetic carbohydrate-based cell wall components from Staphylococcus aureus. DRUG DISCOVERY TODAY. TECHNOLOGIES 2021; 38:35-43. [PMID: 34895639 DOI: 10.1016/j.ddtec.2021.01.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 12/17/2020] [Accepted: 01/19/2021] [Indexed: 12/12/2022]
Abstract
Glycopolymers are found surrounding the outer layer of many bacterial species. The first uses as immunogenic component in vaccines are reported since the beginning of the XX century, but it is only in the last decades that glycoconjugate based vaccines have been effectively applied for controlling and preventing several infectious diseases, such as H. influenzae type b (Hib), N. meningitidis, S. pneumoniae or group B Streptococcus. Methicillin resistant S. aureus (MRSA) strains has been appointed by the WHO as one of those pathogens, for which new treatments are urgently needed. Herein we present an overview of the carbohydrate-based cell wall polymers associated with different S. aureus strains and the related affords to deliver well-defined fragments through synthetic chemistry.
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Nothaft H, Bian X, Shajahan A, Miller WG, Bolick DT, Guerrant RL, Azadi P, Ng KKS, Szymanski CM. Detecting Glucose Fluctuations in the Campylobacter jejuni N-Glycan Structure. ACS Chem Biol 2021; 16:2690-2701. [PMID: 34726367 DOI: 10.1021/acschembio.1c00498] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Campylobacter jejuni is a significant cause of human gastroenteritis worldwide, and all strains express an N-glycan that is added to at least 80 different proteins. We characterized 98 C. jejuni isolates from infants from 7 low- and middle-income countries and identified 4 isolates unreactive with our N-glycan-specific antiserum that was raised against the C. jejuni heptasaccharide composed of GalNAc-GalNAc-GalNAc(Glc)-GalNAc-GalNAc-diNAcBac. Mass spectrometric analyses indicated these isolates express a hexasaccharide lacking the glucose branch. Although all 4 strains encode the PglI glucosyltransferase (GlcTF), one aspartate in the DXDD motif was missing, an alteration also present in ∼4% of all available PglI sequences. Deleting this residue from an active PglI resulted in a nonfunctional GlcTF when the protein glycosylation system was reconstituted in E. coli, while replacement with Glu/Ala was not deleterious. Molecular modeling proposed a mechanism for how the DXDD residues and the structure/length beyond the motif influence activity. Mouse vaccination with an E. coli strain expressing the full-length heptasaccharide produced N-glycan-specific antibodies and a corresponding reduction in Campylobacter colonization and weight loss following challenge. However, the antibodies did not recognize the hexasaccharide and were unable to opsonize C. jejuni isolates lacking glucose, suggesting this should be considered when designing N-glycan-based vaccines to prevent campylobacteriosis.
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Affiliation(s)
- Harald Nothaft
- Department of Medical Microbiology and Immunology, University of Alberta, Katz Group Centre, Edmonton, Alberta T6G 2E9, Canada
| | - Xiaoming Bian
- Department of Microbiology, University of Georgia, 527 Biological Sciences Building, Athens, Georgia 30602, United States
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, Georgia 30602, United States
| | - Asif Shajahan
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, Georgia 30602, United States
| | - William G. Miller
- Produce Safety and Microbiology Research Unit, Agricultural Research Service, United States Department of Agriculture, 800 Buchanan Street, Albany, California 94710, United States
| | - David T. Bolick
- Center for Global Health Equity, Division of Infectious Diseases and International Health, University of Virginia School of Medicine, Charlottesville, Virginia 22908, United States
| | - Richard L. Guerrant
- Center for Global Health Equity, Division of Infectious Diseases and International Health, University of Virginia School of Medicine, Charlottesville, Virginia 22908, United States
| | - Parastoo Azadi
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, Georgia 30602, United States
| | - Kenneth K. S. Ng
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, Ontario N9B 3P4, Canada
| | - Christine M. Szymanski
- Department of Medical Microbiology and Immunology, University of Alberta, Katz Group Centre, Edmonton, Alberta T6G 2E9, Canada
- Department of Microbiology, University of Georgia, 527 Biological Sciences Building, Athens, Georgia 30602, United States
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, Georgia 30602, United States
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Laumay F, Benchetrit H, Corvaglia AR, van der Mee-Marquet N, François P. The Staphylococcus aureus CC398 Lineage: An Evolution Driven by the Acquisition of Prophages and Other Mobile Genetic Elements. Genes (Basel) 2021; 12:genes12111752. [PMID: 34828356 PMCID: PMC8623586 DOI: 10.3390/genes12111752] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 10/25/2021] [Accepted: 10/28/2021] [Indexed: 12/31/2022] Open
Abstract
Among clinically relevant lineages of Staphylococcus aureus, the lineage or clonal complex 398 (CC398) is of particular interest. Strains from this lineage were only described as livestock colonizers until 2007. Progressively, cases of infection were reported in humans in contact with farm animals, and now, CC398 isolates are increasingly identified as the cause of severe infections even in patients without any contact with animals. These observations suggest that CC398 isolates have spread not only in the community but also in the hospital setting. In addition, several recent studies have reported that CC398 strains are evolving towards increased virulence and antibiotic resistance. Identification of the origin and emergence of this clonal complex could probably benefit future large-scale studies that aim to detect sources of contamination and infection. Current evidence indicates that the evolution of CC398 strains towards these phenotypes has been driven by the acquisition of prophages and other mobile genetic elements. In this short review, we summarize the main knowledge of this major lineage of S. aureus that has become predominant in the human clinic worldwide within a single decade.
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Affiliation(s)
- Floriane Laumay
- Genomic Research Laboratory, Service of Infectious Diseases, Faculty of Medicine, Geneva University Hospitals, 1211 Geneva, Switzerland; (F.L.); (A.-R.C.)
- Institut des Agents Infectieux, Centre de Biologie du Nord, Hospices Civils de Lyon, F-69003 Lyon, France
| | - Hugo Benchetrit
- UFR de Chimie et de Biologie, Faculté des Sciences, Université Grenoble Alpes, 38000 Grenoble, France;
| | - Anna-Rita Corvaglia
- Genomic Research Laboratory, Service of Infectious Diseases, Faculty of Medicine, Geneva University Hospitals, 1211 Geneva, Switzerland; (F.L.); (A.-R.C.)
- Geneva Centre for Emerging Viral Diseases, Faculty of Medicine, Geneva University Hospitals, 1211 Geneva, Switzerland
| | | | - Patrice François
- Genomic Research Laboratory, Service of Infectious Diseases, Faculty of Medicine, Geneva University Hospitals, 1211 Geneva, Switzerland; (F.L.); (A.-R.C.)
- Correspondence:
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Milewska S, Niemirowicz-Laskowska K, Siemiaszko G, Nowicki P, Wilczewska AZ, Car H. Current Trends and Challenges in Pharmacoeconomic Aspects of Nanocarriers as Drug Delivery Systems for Cancer Treatment. Int J Nanomedicine 2021; 16:6593-6644. [PMID: 34611400 PMCID: PMC8487283 DOI: 10.2147/ijn.s323831] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 08/04/2021] [Indexed: 12/15/2022] Open
Abstract
Nanotherapy is a part of nanomedicine that involves nanoparticles as carriers to deliver drugs to target locations. This novel targeting approach has been found to resolve various problems, especially those associated with cancer treatment. In nanotherapy, the carrier plays a crucial role in handling many of the existing challenges, including drug protection before early-stage degradations of active substances, allowing them to reach targeted cells and overcome cell resistance mechanisms. The present review comprises the following sections: the first part presents the introduction of pharmacoeconomics as a branch of healthcare economics, the second part covers various beneficial aspects of the use of nanocarriers for in vitro, in vivo, and pre- and clinical studies, as well as discussion on drug resistance problem and present solutions to overcome it. In the third part, progress in drug manufacturing and optimization of the process of nanoparticle synthesis were discussed. Finally, pharmacokinetic and toxicological properties of nanoformulations due to up-to-date studies were summarized. In this review, the most recent developments in the field of nanotechnology's economic impact, particularly beneficial applications in medicine were presented. Primarily focus on cancer treatment, but also discussion on other fields of application, which are strongly associated with cancer epidemiology and treatment, was made. In addition, the current limitations of nanomedicine and its huge potential to improve and develop the health care system were presented.
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Affiliation(s)
- Sylwia Milewska
- Department of Experimental Pharmacology, Medical University of Bialystok, Bialystok, 15-361, Poland
| | | | | | - Piotr Nowicki
- Department of Experimental Pharmacology, Medical University of Bialystok, Bialystok, 15-361, Poland
| | | | - Halina Car
- Department of Experimental Pharmacology, Medical University of Bialystok, Bialystok, 15-361, Poland
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Neil JR, Verma A, Kronewitter SR, McGee WM, Mullen C, Viirtola M, Kotovuori A, Friedrich H, Finell J, Rannisto J, Syka JEP, Stephenson JL. Rapid MRSA detection via tandem mass spectrometry of the intact 80 kDa PBP2a resistance protein. Sci Rep 2021; 11:18309. [PMID: 34526615 PMCID: PMC8443585 DOI: 10.1038/s41598-021-97844-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 08/30/2021] [Indexed: 02/08/2023] Open
Abstract
Treatment of antibiotic-resistant infections is dependent on the detection of specific bacterial genes or proteins in clinical assays. Identification of methicillin-resistant Staphylococcus aureus (MRSA) is often accomplished through the detection of penicillin-binding protein 2a (PBP2a). With greater dependence on mass spectrometry (MS)-based bacterial identification, complementary efforts to detect resistance have been hindered by the complexity of those proteins responsible. Initial characterization of PBP2a indicates the presence of glycan modifications. To simplify detection, we demonstrate a proof-of-concept tandem MS approach involving the generation of N-terminal PBP2a peptide-like fragments and detection of unique product ions during top-down proteomic sample analyses. This approach was implemented for two PBP2a variants, PBP2amecA and PBP2amecC, and was accurate across a representative panel of MRSA strains with different genetic backgrounds. Additionally, PBP2amecA was successfully detected from clinical isolates using a five-minute liquid chromatographic separation and implementation of this MS detection strategy. Our results highlight the capability of direct MS-based resistance marker detection and potential advantages for implementing these approaches in clinical diagnostics.
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Ohno S, Manabe N, Yamaguchi T, Uzawa J, Yamaguchi Y. Ribitol in Solution Is an Equilibrium of Asymmetric Conformations. Molecules 2021; 26:molecules26185471. [PMID: 34576942 PMCID: PMC8468352 DOI: 10.3390/molecules26185471] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 09/06/2021] [Accepted: 09/06/2021] [Indexed: 11/18/2022] Open
Abstract
Ribitol (C5H12O5), an acyclic sugar alcohol, is present on mammalian α-dystroglycan as a component of O-mannose glycan. In this study, we examine the conformation and dynamics of ribitol by database analysis, experiments, and computational methods. Database analysis reveals that the anti-conformation (180°) is populated at the C3–C4 dihedral angle, while the gauche conformation (±60°) is seen at the C2–C3 dihedral angle. Such conformational asymmetry was born out in a solid-state 13C-NMR spectrum of crystalline ribitol, where C1 and C5 signals are unequal. On the other hand, solution 13C-NMR has identical chemical shifts for C1 and C5. NMR 3J coupling constants and OH exchange rates suggest that ribitol is an equilibrium of conformations, under the influence of hydrogen bonds and/or steric hinderance. Molecular dynamics (MD) simulations allowed us to discuss such a chemically symmetric molecule, pinpointing the presence of asymmetric conformations evidenced by the presence of correlations between C2–C3 and C3–C4 dihedral angles. These findings provide a basis for understanding the dynamic structure of ribitol and the function of ribitol-binding enzymes.
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Affiliation(s)
- Shiho Ohno
- Division of Structural Glycobiology, Institute of Molecular Biomembrane and Glycobiology, Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai 981-8558, Miyagi, Japan; (S.O.); (N.M.)
| | - Noriyoshi Manabe
- Division of Structural Glycobiology, Institute of Molecular Biomembrane and Glycobiology, Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai 981-8558, Miyagi, Japan; (S.O.); (N.M.)
| | - Takumi Yamaguchi
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi 923-1292, Ishikawa, Japan;
| | - Jun Uzawa
- Structural Glycobiology Team, RIKEN (The Institute of Physical and Chemical Research), 2-1 Hirosawa, Wako 351-0198, Saitama, Japan;
| | - Yoshiki Yamaguchi
- Division of Structural Glycobiology, Institute of Molecular Biomembrane and Glycobiology, Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai 981-8558, Miyagi, Japan; (S.O.); (N.M.)
- Structural Glycobiology Team, RIKEN (The Institute of Physical and Chemical Research), 2-1 Hirosawa, Wako 351-0198, Saitama, Japan;
- Correspondence: ; Tel.: +81-22-727-0208
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Zhong L, Zhu L, Cai ZW. Mass Spectrometry-based Proteomics and Glycoproteomics in COVID-19 Biomarkers Identification: A Mini-review. JOURNAL OF ANALYSIS AND TESTING 2021; 5:298-313. [PMID: 34513131 PMCID: PMC8423835 DOI: 10.1007/s41664-021-00197-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 07/27/2021] [Indexed: 12/11/2022]
Abstract
The first corona-pandemic, coronavirus disease 2019 (COVID-19) caused a huge health crisis and incalculable damage worldwide. Knowledge of how to cure the disease is urgently needed. Emerging immune escaping mutants of the virus suggested that it may be potentially persistent in human society as a regular health threat as the flu virus. Therefore, it is imperative to identify appropriate biomarkers to indicate pathological and physiological states, and more importantly, clinic outcomes. Proteins are the performers of life functions, and their abundance and modification status can directly reflect the immune status. Protein glycosylation serves a great impact in modulating protein function. The use of both unmodified and glycosylated proteins as biomarkers has also been proved feasible in the studies of SARS, Zika virus, influenza, etc. In recent years, mass spectrometry-based glycoproteomics, as well as proteomics approaches, advanced significantly due to the evolution of mass spectrometry. We focus on the current development of the mass spectrometry-based strategy for COVID-19 biomarkers' investigation. Potential application of glycoproteomics approaches and challenges in biomarkers identification are also discussed.
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Affiliation(s)
- Li Zhong
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, 224 Waterloo Road, Kowloon Tong, Hong Kong SAR, China
| | - Lin Zhu
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, 224 Waterloo Road, Kowloon Tong, Hong Kong SAR, China
| | - Zong-Wei Cai
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, 224 Waterloo Road, Kowloon Tong, Hong Kong SAR, China
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Huang R, Cai GQ, Li J, Li XS, Liu HT, Shang XL, Zhou JD, Nie XM, Gui R. Platelet membrane-camouflaged silver metal-organic framework drug system against infections caused by methicillin-resistant Staphylococcus aureus. J Nanobiotechnology 2021; 19:229. [PMID: 34348721 PMCID: PMC8336064 DOI: 10.1186/s12951-021-00978-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Accepted: 07/27/2021] [Indexed: 12/30/2022] Open
Abstract
Background Due to the intelligent survival strategy and self-preservation of methicillin-resistant Staphylococcus aureus (MRSA), many antibiotics are ineffective in treating MRSA infections. Nano-drug delivery systems have emerged as a new method to overcome this barrier. The aim of this study was to construct a novel nano-drug delivery system for the treatment of MRSA infection, and to evaluate the therapeutic effect and biotoxicity of this system. We prepared a nano silver metal-organic framework using 2-methylimidazole as ligand and silver nitrate as ion provider. Vancomycin (Vanc) was loaded with Ag-MOF, and nano-sized platelet vesicles were prepared to encapsulate Ag-MOF-Vanc, thus forming the novel platelet membrane-camouflaged nanoparticles PLT@Ag-MOF-Vanc. Results The synthesized Ag-MOF particles had uniform size and shape of radiating corona. The mean nanoparticle size and zeta potential of PLT@Ag-MOF-Vanc were 148 nm and − 25.6 mV, respectively. The encapsulation efficiency (EE) and loading efficiency (LE) of vancomycin were 81.0 and 64.7 %, respectively. PLT@Ag-MOF-Vanc was shown to be a pH-responsive nano-drug delivery system with good biocompatibility. Ag-MOF had a good inhibitory effect on the growth of three common clinical strains (Escherichia coli, Pseudomonas aeruginosa, and S. aureus). PLT@Ag-MOF-Vanc showed better antibacterial activity against common clinical strains in vitro than free vancomycin. PLT@Ag-MOF-Vanc killed MRSA through multiple approaches, including interfering with the metabolism of bacteria, catalyzing reactive oxygen species production, destroying the integrity of cell membrane, and inhibiting biofilm formation. Due to the encapsulation of the platelet membrane, PLT@Ag-MOF-Vanc can bind to the surface of the MRSA bacteria and the sites of MRSA infection. PLT@Ag-MOF-Vanc had a good anti-infective effect in mouse MRSA pneumonia model, which was significantly superior to free vancomycin, and has no obvious toxicity. Conclusions PLT@Ag-MOF-Vanc is a novel effective targeted drug delivery system, which is expected to be used safely in anti-infective therapy of MRSA. Graphic abstract ![]()
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Affiliation(s)
- Rong Huang
- Department of Blood Transfusion, The Third Xiangya Hospital, Central South University, Hunan, Changsha, China.,Department of Laboratory Medicine, The Third Xiangya Hospital, Central South University, Hunan, Changsha, China
| | - Guang-Qing Cai
- Department of Orthopedics, Changsha Hospital of Traditional Chinese Medicine, Changsha Eighth Hospital, Hunan, Changsha, China
| | - Jian Li
- Department of Blood Transfusion, The Third Xiangya Hospital, Central South University, Hunan, Changsha, China
| | - Xi-Sheng Li
- Department of Laboratory Medicine, The Third Xiangya Hospital, Central South University, Hunan, Changsha, China
| | - Hai-Ting Liu
- Department of Blood Transfusion, The Third Xiangya Hospital, Central South University, Hunan, Changsha, China
| | - Xue-Ling Shang
- Department of Laboratory Medicine, The Third Xiangya Hospital, Central South University, Hunan, Changsha, China
| | - Jian-Dang Zhou
- Department of Laboratory Medicine, The Third Xiangya Hospital, Central South University, Hunan, Changsha, China
| | - Xin-Min Nie
- Department of Laboratory Medicine, The Third Xiangya Hospital, Central South University, Hunan, Changsha, China.
| | - Rong Gui
- Department of Blood Transfusion, The Third Xiangya Hospital, Central South University, Hunan, Changsha, China.
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49
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Correa AMS, Howard-Varona C, Coy SR, Buchan A, Sullivan MB, Weitz JS. Revisiting the rules of life for viruses of microorganisms. Nat Rev Microbiol 2021; 19:501-513. [PMID: 33762712 DOI: 10.1038/s41579-021-00530-x] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/15/2021] [Indexed: 02/01/2023]
Abstract
Viruses that infect microbial hosts have traditionally been studied in laboratory settings with a focus on either obligate lysis or persistent lysogeny. In the environment, these infection archetypes are part of a continuum that spans antagonistic to beneficial modes. In this Review, we advance a framework to accommodate the context-dependent nature of virus-microorganism interactions in ecological communities by synthesizing knowledge from decades of virology research, eco-evolutionary theory and recent technological advances. We discuss that nuanced outcomes, rather than the extremes of the continuum, are particularly likely in natural communities given variability in abiotic factors, the availability of suboptimal hosts and the relevance of multitrophic partnerships. We revisit the 'rules of life' in terms of how long-term infections shape the fate of viruses and microbial cells, populations and ecosystems.
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Affiliation(s)
| | | | - Samantha R Coy
- BioSciences Department, Rice University, Houston, TX, USA
| | - Alison Buchan
- Department of Microbiology, University of Tennessee, Knoxville, TN, USA.
| | - Matthew B Sullivan
- Department of Microbiology, The Ohio State University, Columbus, OH, USA. .,Department of Civil, Environmental, and Geodetic Engineering, The Ohio State University, Columbus, OH, USA.
| | - Joshua S Weitz
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA, USA. .,School of Physics, Georgia Institute of Technology, Atlanta, GA, USA.
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50
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Fujinami D, Garcia de Gonzalo CV, Biswas S, Hao Y, Wang H, Garg N, Lukk T, Nair SK, van der Donk WA. Structural and mechanistic investigations of protein S-glycosyltransferases. Cell Chem Biol 2021; 28:1740-1749.e6. [PMID: 34283964 DOI: 10.1016/j.chembiol.2021.06.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 06/06/2021] [Accepted: 06/28/2021] [Indexed: 10/20/2022]
Abstract
Attachment of sugars to nitrogen and oxygen in peptides is ubiquitous in biology, but glycosylation of sulfur atoms has only been recently described. Here, we characterize two S-glycosyltransferases SunS and ThuS that selectively glycosylate one of five Cys residues in their substrate peptides; substitution of this Cys with Ser results in a strong decrease in glycosylation activity. Crystal structures of SunS and ThuS in complex with UDP-glucose or a derivative reveal an unusual architecture in which a glycosyltransferase type A (GTA) fold is decorated with additional domains to support homodimerization. Dimer formation creates an extended cavity for the substrate peptide, drawing functional analogy with O-glycosyltransferases involved in cell wall biosynthesis. This extended cavity contains a sharp bend that may explain the site selectivity of the glycosylation because the target Cys is in a Gly-rich stretch that can accommodate the bend. These studies establish a molecular framework for understanding the unusual S-glycosyltransferases.
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Affiliation(s)
- Daisuke Fujinami
- Howard Hughes Medical Institute and Roger Adams Laboratory, Department of Chemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL 61801, USA
| | - Chantal V Garcia de Gonzalo
- Howard Hughes Medical Institute and Roger Adams Laboratory, Department of Chemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL 61801, USA
| | - Subhanip Biswas
- Howard Hughes Medical Institute and Roger Adams Laboratory, Department of Chemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL 61801, USA
| | - Yue Hao
- Department of Biochemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL 61801, USA
| | - Huan Wang
- Howard Hughes Medical Institute and Roger Adams Laboratory, Department of Chemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL 61801, USA
| | - Neha Garg
- Department of Biochemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL 61801, USA
| | - Tiit Lukk
- Department of Biochemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL 61801, USA
| | - Satish K Nair
- Department of Biochemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL 61801, USA.
| | - Wilfred A van der Donk
- Howard Hughes Medical Institute and Roger Adams Laboratory, Department of Chemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL 61801, USA; Department of Biochemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL 61801, USA.
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