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Xue S, Ma J, Li SS, Fan S, Cai Y, Li J, Fu X, Deng Z, Sun QH, Sun YC, Ma W. Mining of the Novel Virulent ATP-Binding Cassette Importers in Mycobacterium abscessus by Comparative Genomic Strategy. Microb Drug Resist 2022; 28:1057-1064. [DOI: 10.1089/mdr.2021.0450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Affiliation(s)
- Song Xue
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, P.R. China
| | - Jian Ma
- Department of Respiratory and Critical Care Medicine, Shanghai Pulmony Hospital, Shanghai, P.R. China
| | - Si-Shang Li
- MOH Key Laboratory of Systems Biology of Pathogens, Center for Tuberculosis Research, Chinese Academy of Medical Sciences and Peking Union Medical College, Institute of Pathogen Biology, Beijing, P.R. China
| | - Shuxuan Fan
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, P.R. China
| | - YiChun Cai
- School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, P.R. China
| | - Jiahao Li
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, P.R. China
| | - Xiang Fu
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, P.R. China
| | - ZiXin Deng
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, P.R. China
| | - Qiu Hong Sun
- Department of Respiratory and Critical Care Medicine, Shanghai Pulmony Hospital, Shanghai, P.R. China
| | - Yi-Cheng Sun
- MOH Key Laboratory of Systems Biology of Pathogens, Center for Tuberculosis Research, Chinese Academy of Medical Sciences and Peking Union Medical College, Institute of Pathogen Biology, Beijing, P.R. China
| | - Wei Ma
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, P.R. China
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Karlikowska M, Singh A, Bhatt A, Ott S, Bottrill AR, Besra GS, Fullam E. Biochemical and phenotypic characterisation of the Mycobacterium smegmatis transporter UspABC. Cell Surf 2021; 7:100052. [PMID: 34296047 PMCID: PMC8281650 DOI: 10.1016/j.tcsw.2021.100052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 04/02/2021] [Accepted: 04/03/2021] [Indexed: 11/08/2022] Open
Abstract
Mycobacterium tuberculosis (Mtb) is an intracellular human pathogen that has evolved to survive in a nutrient limited environment within the host for decades. Accordingly, Mtb has developed strategies to acquire scarce nutrients and the mycobacterial transporter systems provide an important route for the import of key energy sources. However, the physiological role of the Mtb transporters and their substrate preference(s) are poorly characterised. Previous studies have established that the Mtb UspC solute-binding domain recognises amino- and phosphorylated-sugars, indicating that the mycobacterial UspABC transporter plays a key role in the import of peptidoglycan precursors. Herein, we have used a wide array of approaches to investigate the role of UspABC in Mycobacterium smegmatis by analysis of mutant strains that either lack the solute binding domain: ΔuspC or the entire transport complex: ΔuspABC. Analysis of mycobacterial transcripts shows that the uspABC system is functionally expressed in mycobacteria as a contiguous reading frame. Topology mapping confirms an Nin-Cin orientation of the UspAB integral membrane spanning domains. Phenotypic microarray profiling of commercially available sugars suggests, unexpectedly, that the uspC and ΔuspABC mutants had different carbon utilisation profiles and that neither strain utilised glucose-1-phosphate. Furthermore, proteomics analysis showed an alteration in the abundance of proteins involved in sugar and lipid metabolism, crucial for cell envelope synthesis, and we propose that UspABC has an important role in determining the interplay between these pathways.
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Affiliation(s)
| | - Albel Singh
- Institute of Microbiology & Infection, School of Biosciences, University of Birmingham, Birmingham B15 2TT, UK
| | - Apoorva Bhatt
- Institute of Microbiology & Infection, School of Biosciences, University of Birmingham, Birmingham B15 2TT, UK
| | - Sascha Ott
- Warwick Medical School, University of Warwick, CV4 7AL, UK
- Bioinformatics Research Technology Platform, University of Warwick, Coventry CV4 7AL, UK
| | | | - Gurdyal S. Besra
- Institute of Microbiology & Infection, School of Biosciences, University of Birmingham, Birmingham B15 2TT, UK
| | - Elizabeth Fullam
- School of Life Sciences, University of Warwick, Coventry CV4 7AL, UK
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De la Torre LI, Vergara Meza JG, Cabarca S, Costa-Martins AG, Balan A. Comparison of carbohydrate ABC importers from Mycobacterium tuberculosis. BMC Genomics 2021; 22:841. [PMID: 34798821 PMCID: PMC8603345 DOI: 10.1186/s12864-021-07972-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 09/03/2021] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Mycobacterium tuberculosis, the etiological agent of tuberculosis, has at least four ATP-Binding Cassette (ABC) transporters dedicated to carbohydrate uptake: LpqY/SugABC, UspABC, Rv2038c-41c, and UgpAEBC. LpqY/SugABC transporter is essential for M. tuberculosis survival in vivo and potentially involved in the recycling of cell wall components. The three-dimensional structures of substrate-binding proteins (SBPs) LpqY, UspC, and UgpB were described, however, questions about how these proteins interact with the cognate transporter are still being explored. Components of these transporters, such as SBPs, show high immunogenicity and could be used for the development of diagnostic and therapeutic tools. In this work, we used a phylogenetic and structural bioinformatics approach to compare the four systems, in an attempt to predict functionally important regions. RESULTS Through the analysis of the putative orthologs of the carbohydrate ABC importers in species of Mycobacterium genus it was shown that Rv2038c-41c and UgpAEBC systems are restricted to pathogenic species. We showed that the components of the four ABC importers are phylogenetically separated into four groups defined by structural differences in regions that modulate the functional activity or the interaction with domain partners. The regulatory region in nucleotide-binding domains, the periplasmic interface in transmembrane domains and the ligand-binding pocket of the substrate-binding proteins define their substrates and segregation in different branches. The interface between transmembrane domains and nucleotide-binding domains show conservation of residues and charge. CONCLUSIONS The presence of four ABC transporters in M. tuberculosis dedicated to uptake and transport of different carbohydrate sources, and the exclusivity of at least two of them being present only in pathogenic species of Mycobacterium genus, highlights their relevance in virulence and pathogenesis. The significant differences in the SBPs, not present in eukaryotes, and in the regulatory region of NBDs can be explored for the development of inhibitory drugs targeting the bacillus. The possible promiscuity of NBDs also contributes to a less specific and more comprehensive control approach.
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Affiliation(s)
- Lilia I De la Torre
- Department of Microbiology, Institute of Biomedical Science, University of São Paulo, São Paulo, Brazil
- Genectics and Molecular Biology Postgraduate Program, Institute of Biology, State University of Campinas, São Paulo, Brazil
- Biomedical Research Group, University of Sucre, Sucre, Colombia
| | - José G Vergara Meza
- Biomedical Research Group, University of Sucre, Sucre, Colombia
- Department of Parasitology, Institute of Biomedical Science, University of São Paulo, São Paulo, Brazil
| | - Sindy Cabarca
- Department of Microbiology, Institute of Biomedical Science, University of São Paulo, São Paulo, Brazil
- Genectics and Molecular Biology Postgraduate Program, Institute of Biology, State University of Campinas, São Paulo, Brazil
- Biomedical Research Group, University of Sucre, Sucre, Colombia
| | - André G Costa-Martins
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Andrea Balan
- Department of Microbiology, Institute of Biomedical Science, University of São Paulo, São Paulo, Brazil.
- Genectics and Molecular Biology Postgraduate Program, Institute of Biology, State University of Campinas, São Paulo, Brazil.
- Laboratory of Applied Structural Biology, Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, Av. Prof. Lineu Prestes, 1374; Cidade Universitária, São Paulo, Brazil.
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The ATP-Binding Cassette (ABC) Transport Systems in Mycobacterium tuberculosis: Structure, Function, and Possible Targets for Therapeutics. BIOLOGY 2020; 9:biology9120443. [PMID: 33291531 PMCID: PMC7761784 DOI: 10.3390/biology9120443] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 11/06/2020] [Accepted: 11/12/2020] [Indexed: 12/22/2022]
Abstract
Simple Summary Mycobacterium tuberculosis is a bacterium of great medical importance because it causes tuberculosis, a disease that affects millions of people worldwide. Two important features are related to this bacterium: its ability to infect and survive inside the host, minimizing the immune response, and the burden of clinical isolates that are highly resistant to antibiotics treatment. These two phenomena are directly affected by cell envelope proteins, such as proteins from the ATP-Binding Cassette (ABC transporters) superfamily. In this review, we have compiled information on all the M. tuberculosis ABC transporters described so far, both from a functional and structural point of view, and show their relevance for the bacillus and the potential targets for studies aiming to control the microorganism and structural features. Abstract Mycobacterium tuberculosis is the etiological agent of tuberculosis (TB), a disease that affects millions of people in the world and that is associated with several human diseases. The bacillus is highly adapted to infect and survive inside the host, mainly because of its cellular envelope plasticity, which can be modulated to adapt to an unfriendly host environment; to manipulate the host immune response; and to resist therapeutic treatment, increasing in this way the drug resistance of TB. The superfamily of ATP-Binding Cassette (ABC) transporters are integral membrane proteins that include both importers and exporters. Both types share a similar structural organization, yet only importers have a periplasmic substrate-binding domain, which is essential for substrate uptake and transport. ABC transporter-type importers play an important role in the bacillus physiology through the transport of several substrates that will interfere with nutrition, pathogenesis, and virulence. Equally relevant, exporters have been involved in cell detoxification, nutrient recycling, and antibiotics and drug efflux, largely affecting the survival and development of multiple drug-resistant strains. Here, we review known ABC transporters from M. tuberculosis, with particular focus on the diversity of their structural features and relevance in infection and drug resistance.
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Soni DK, Dubey SK, Bhatnagar R. ATP-binding cassette (ABC) import systems of Mycobacterium tuberculosis: target for drug and vaccine development. Emerg Microbes Infect 2020; 9:207-220. [PMID: 31985348 PMCID: PMC7034087 DOI: 10.1080/22221751.2020.1714488] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Nutrient procurement specifically from nutrient-limiting environment is essential for pathogenic bacteria to survive and/or persist within the host. Long-term survival or persistent infection is one of the main reasons for the overuse of antibiotics, and contributes to the development and spread of antibiotic resistance. Mycobacterium tuberculosis is known for long-term survival within the host, and develops multidrug resistance. Before and during infection, the pathogen encounters various harsh environmental conditions. To cope up with such nutrient-limiting conditions, it is crucial to uptake essential nutrients such as ions, sugars, amino acids, peptides, and metals, necessary for numerous vital biological activities. Among the various types of transporters, ATP-binding cassette (ABC) importers are essentially unique to bacteria, accessible as drug targets without penetrating the cytoplasmic membrane, and offer an ATP-dependent gateway into the cell by mimicking substrates of the importer and designing inhibitors against substrate-binding proteins, ABC importers endeavour for the development of successful drug candidates and antibiotics. Alternatively, the production of antibodies against substrate-binding proteins could lead to vaccine development. In this review, we will emphasize the role of M. tuberculosis ABC importers for survival and virulence within the host. Furthermore, we will elucidate their unique characteristics to discover emerging therapies to combat tuberculosis.
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Affiliation(s)
- Dharmendra Kumar Soni
- Molecular Biology and Genetic Engineering Laboratory, School of Biotechnology, Jawaharlal Nehru University, New Delhi, India
| | - Suresh Kumar Dubey
- Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Rakesh Bhatnagar
- Molecular Biology and Genetic Engineering Laboratory, School of Biotechnology, Jawaharlal Nehru University, New Delhi, India
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Brillhante RSN, Moreira Filho RE, Rocha MFG, Castelo-Branco DDSCM, Fechine MAB, Lima RACD, Picanço YVC, Cordeiro RDA, Camargo ZPD, Queiroz JAN, Araujo RWBD, Mesquita JRLD, Sidrim JJC. Coccidioidomycosis in armadillo hunters from the state of Ceará, Brazil. Mem Inst Oswaldo Cruz 2013; 107:813-5. [PMID: 22990973 DOI: 10.1590/s0074-02762012000600017] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2011] [Accepted: 05/10/2012] [Indexed: 11/22/2022] Open
Abstract
Coccidioidomycosis is a systemic mycosis with a variable clinical presentation. Misdiagnosis of coccidioidomycosis as bacterial pneumopathy leads to inappropriate prescription of antibiotics and delayed diagnosis. This report describes an outbreak among armadillo hunters in northeastern Brazil in which an initial diagnosis of bacterial pneumonia was later confirmed as coccidioidomycosis caused by Coccidioides posadasii. Thus, this mycosis should be considered as an alternative diagnosis in patients reporting symptoms of pneumonia, even if these symptoms are only presented for a short period, who are from areas considered endemic for this disease.
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Filho REM, Bandeira SP, Brillhante RSN, Rocha MFG, Vasconcelos IM, Pereira ML, Castelo-Branco DDSCM, Rocha FAC, Camargo ZPD, Ramos MV, Cordeiro RDA, Sidrim JJC. Biochemical characterization of an in-house Coccidioides antigen: perspectives for the immunodiagnosis of coccidioidomycosis. Molecules 2012; 17:7854-63. [PMID: 22743589 PMCID: PMC6268230 DOI: 10.3390/molecules17077854] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2012] [Revised: 06/18/2012] [Accepted: 06/20/2012] [Indexed: 11/16/2022] Open
Abstract
The objective of this study was to evaluate the reactivity of an in-house antigen, extracted from a strain of C. posadasii isolated in northeastern Brazil, by radial immunodiffusion and Western blotting, as well as to establish its biochemical characterization. The protein antigen was initially extracted with the use of solid ammonium sulfate and characterized by 1-D electrophoresis. Subsequently, it was tested by means of double radial immunodiffusion and Western blotting. A positive reaction was observed against the antigen by both immunodiagnostic techniques tested on sera from patients suffering from coccidioidomycosis. Besides this, two immunoreactive protein bands were observed and were revealed to be a β-glucosidase and a glutamine synthetase after sequencing of the respective N-terminal regions. Our in-house Coccidioides antigen can be promising as a quick and low-cost diagnostic tool without the risk of direct manipulation of the microorganism.
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Affiliation(s)
- Renato Evando Moreira Filho
- Specialized Medical Mycology Center, School of Medicine, Federal University of Ceará, Fortaleza, CE, CEP 60430-270, Brazil.
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Identification of Rv2041c, a novel immunogenic antigen fromMycobacterium tuberculosiswith serodiagnostic potential. Scand J Immunol 2009. [DOI: 10.1111/j.1365-3083.2009.02344_2.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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