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Chatterjee A. Mycobacterium tuberculosis and its secreted tyrosine phosphatases. Biochimie 2023; 212:41-47. [PMID: 37059349 DOI: 10.1016/j.biochi.2023.04.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 04/04/2023] [Accepted: 04/12/2023] [Indexed: 04/16/2023]
Abstract
Tuberculosis is one of the most common infectious diseases and has been a major burden for a long time now. Increasing drug resistance in TB is slowing down the process of disease treatment. Mycobacterium tuberculosis, the causative agent of TB is known to have a cascade of virulence factors to fight with host's immune system. The phosphatases (PTPs) of Mtb plays a critical role as these are secretory in nature and help the survival of bacteria in host. Researchers have been trying to synthesize inhibitors against a lot of virulence factors of Mtb but recently the phosphatases have gained a lot of interest due to their secretory nature. This review gives a concise overview of virulence factors of Mtb with emphasis on mPTPs. Here we discuss the current scenario of drug development against mPTPs.
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Affiliation(s)
- Aditi Chatterjee
- University of Maryland Greenebaum Comprehensive Cancer Center, Baltimore, MD, USA.
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2
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Lade H, Kim JS. Molecular Determinants of β-Lactam Resistance in Methicillin-Resistant Staphylococcus aureus (MRSA): An Updated Review. Antibiotics (Basel) 2023; 12:1362. [PMID: 37760659 PMCID: PMC10525618 DOI: 10.3390/antibiotics12091362] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 08/21/2023] [Accepted: 08/24/2023] [Indexed: 09/29/2023] Open
Abstract
The development of antibiotic resistance in Staphylococcus aureus, particularly in methicillin-resistant S. aureus (MRSA), has become a significant health concern worldwide. The acquired mecA gene encodes penicillin-binding protein 2a (PBP2a), which takes over the activities of endogenous PBPs and, due to its low affinity for β-lactam antibiotics, is the main determinant of MRSA. In addition to PBP2a, other genetic factors that regulate cell wall synthesis, cell signaling pathways, and metabolism are required to develop high-level β-lactam resistance in MRSA. Although several genetic factors that modulate β-lactam resistance have been identified, it remains unclear how they alter PBP2a expression and affect antibiotic resistance. This review describes the molecular determinants of β-lactam resistance in MRSA, with a focus on recent developments in our understanding of the role of mecA-encoded PBP2a and on other genetic factors that modulate the level of β-lactam resistance. Understanding the molecular determinants of β-lactam resistance can aid in developing novel strategies to combat MRSA.
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Affiliation(s)
| | - Jae-Seok Kim
- Department of Laboratory Medicine, Hallym University College of Medicine, Kangdong Sacred Heart Hospital, Seoul 05355, Republic of Korea;
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3
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Mukkayyan N, Poon R, Sander PN, Lai LY, Zubair-Nizami Z, Hammond MC, Chatterjee SS. In Vivo Detection of Cyclic-di-AMP in Staphylococcus aureus. ACS OMEGA 2022; 7:32749-32753. [PMID: 36120079 PMCID: PMC9476191 DOI: 10.1021/acsomega.2c04538] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 08/18/2022] [Indexed: 06/15/2023]
Abstract
Cyclic-di-AMP (CDA) is a signaling molecule that controls various cellular functions including antibiotic tolerance and osmoregulation in Staphylococcus aureus (S. aureus). In this study, we developed a novel biosensor (bsuO P6-4) for in vivo detection of CDA in S. aureus. The fluorescent biosensor is based on a natural CDA riboswitch from Bacillus subtilis connected at its P6 stem to the dye-binding aptamer Spinach. Our study showed that bsuO P6-4 could detect a wide concentration range of CDA in both laboratory and clinical strains, making it suitable for use in both basic and clinical research applications.
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Affiliation(s)
- Nagaraja Mukkayyan
- Department
of Microbial Pathogenesis, School of Dentistry, University of Maryland, Baltimore, Maryland 21202, United States
- Institute
of Marine and Environmental Technology, Baltimore, Maryland 21202, United States
| | - Raymond Poon
- Department
of Microbial Pathogenesis, School of Dentistry, University of Maryland, Baltimore, Maryland 21202, United States
- Institute
of Marine and Environmental Technology, Baltimore, Maryland 21202, United States
| | - Philipp N. Sander
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
| | - Li-Yin Lai
- Department
of Microbial Pathogenesis, School of Dentistry, University of Maryland, Baltimore, Maryland 21202, United States
- Institute
of Marine and Environmental Technology, Baltimore, Maryland 21202, United States
| | - Zahra Zubair-Nizami
- Department
of Microbial Pathogenesis, School of Dentistry, University of Maryland, Baltimore, Maryland 21202, United States
- Institute
of Marine and Environmental Technology, Baltimore, Maryland 21202, United States
| | - Ming C. Hammond
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
- Department
of Chemistry and Henry Eyring Center for Cell and Genome Sciences, University of Utah, Salt Lake City, Utah 84112, United States
| | - Som S. Chatterjee
- Department
of Microbial Pathogenesis, School of Dentistry, University of Maryland, Baltimore, Maryland 21202, United States
- Institute
of Marine and Environmental Technology, Baltimore, Maryland 21202, United States
- University
of Maryland Center for Environmental Science, Baltimore, Maryland 21202, United States
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4
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Nagarajan SN, Lenoir C, Grangeasse C. Recent advances in bacterial signaling by serine/threonine protein kinases. Trends Microbiol 2021; 30:553-566. [PMID: 34836791 DOI: 10.1016/j.tim.2021.11.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 10/28/2021] [Accepted: 11/01/2021] [Indexed: 11/27/2022]
Abstract
It has been nearly three decades since the discovery of the first bacterial serine/threonine protein kinase (STPK). Since then, a blend of technological advances has led to the characterization of a multitude of STPKs and phosphorylation substrates in several bacterial species that finely regulate intricate signaling cascades. Years of intense research from several laboratories have demonstrated unexpected roles for serine/threonine phosphorylation, regulating not only bacterial growth and cell division but also antibiotic persistence, virulence and infection, metabolism, chromosomal biology, and cellular differentiation. This review aims to provide an account of the most recent and significant developments in this up and growing field in microbiology.
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Affiliation(s)
- Sathya Narayanan Nagarajan
- Molecular Microbiology and Structural Biochemistry, UMR 5086, Université de Lyon, CNRS, IBCP building, 7 passage du Vercors, 69367 Lyon Cedex 07, France
| | - Cassandra Lenoir
- Molecular Microbiology and Structural Biochemistry, UMR 5086, Université de Lyon, CNRS, IBCP building, 7 passage du Vercors, 69367 Lyon Cedex 07, France
| | - Christophe Grangeasse
- Molecular Microbiology and Structural Biochemistry, UMR 5086, Université de Lyon, CNRS, IBCP building, 7 passage du Vercors, 69367 Lyon Cedex 07, France.
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Gostev V, Kalinogorskaya O, Ivanova K, Kalisnikova E, Lazareva I, Starkova P, Sidorenko S. In Vitro Selection of High-Level Beta-Lactam Resistance in Methicillin-Susceptible Staphylococcus aureus. Antibiotics (Basel) 2021; 10:antibiotics10060637. [PMID: 34073276 PMCID: PMC8227848 DOI: 10.3390/antibiotics10060637] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 05/20/2021] [Accepted: 05/24/2021] [Indexed: 12/29/2022] Open
Abstract
Selective pressure of beta-lactams is thought to be responsible for mutation selection in methicillin-susceptible Staphylococcus aureus (MSSA). We used next-generation sequencing to compare the genomes of beta-lactamase-positive (SA0707) and -negative (SA0937) MSSA isolates with their derivatives obtained after selection with oxacillin, ceftaroline, or meropenem. Selection with oxacillin and ceftaroline caused a rapid and significant (6–8 times) increase in the minimum inhibitory concentration (MICs) of oxacillin, penicillin, amoxicillin/clavulanate, and ceftaroline against the derivatives of both isolates, associated with growth impairment. Selection with meropenem caused a limited increase in the MICs of all beta-lactams against both isolates. During the initial stages of selection (after 5–15 passages), mutations were detected only in some reads, which indicated the heterogeneity of the population; however, during the later stages, either the population reversed to the wild type or fixation of the mutation was observed in the entire population. Selection with different beta-lactams caused diverse mutational events, but common mutations were detected in gdpP, all penicillin-binding proteins, cell wall regulators (vraST, graR), and deletions in the promoter region of pbp4. Therefore, the disk diffusion test with cefoxitin does not reveal resistance associated with these mechanisms in some cases, which can lead to the failure of beta-lactam therapy.
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Affiliation(s)
- Vladimir Gostev
- Department of Medical Microbiology and Molecular Epidemiology, Pediatric Research and Clinical Center for Infectious Diseases, 194017 Saint Petersburg, Russia; (V.G.); (O.K.); (K.I.); (E.K.); (I.L.); (P.S.)
- Department of Medical Microbiology, North-Western State Medical University named after I.I Mechnikov, 195067 Saint Petersburg, Russia
| | - Olga Kalinogorskaya
- Department of Medical Microbiology and Molecular Epidemiology, Pediatric Research and Clinical Center for Infectious Diseases, 194017 Saint Petersburg, Russia; (V.G.); (O.K.); (K.I.); (E.K.); (I.L.); (P.S.)
| | - Ksenia Ivanova
- Department of Medical Microbiology and Molecular Epidemiology, Pediatric Research and Clinical Center for Infectious Diseases, 194017 Saint Petersburg, Russia; (V.G.); (O.K.); (K.I.); (E.K.); (I.L.); (P.S.)
| | - Ekaterina Kalisnikova
- Department of Medical Microbiology and Molecular Epidemiology, Pediatric Research and Clinical Center for Infectious Diseases, 194017 Saint Petersburg, Russia; (V.G.); (O.K.); (K.I.); (E.K.); (I.L.); (P.S.)
| | - Irina Lazareva
- Department of Medical Microbiology and Molecular Epidemiology, Pediatric Research and Clinical Center for Infectious Diseases, 194017 Saint Petersburg, Russia; (V.G.); (O.K.); (K.I.); (E.K.); (I.L.); (P.S.)
| | - Polina Starkova
- Department of Medical Microbiology and Molecular Epidemiology, Pediatric Research and Clinical Center for Infectious Diseases, 194017 Saint Petersburg, Russia; (V.G.); (O.K.); (K.I.); (E.K.); (I.L.); (P.S.)
| | - Sergey Sidorenko
- Department of Medical Microbiology and Molecular Epidemiology, Pediatric Research and Clinical Center for Infectious Diseases, 194017 Saint Petersburg, Russia; (V.G.); (O.K.); (K.I.); (E.K.); (I.L.); (P.S.)
- Department of Medical Microbiology, North-Western State Medical University named after I.I Mechnikov, 195067 Saint Petersburg, Russia
- Correspondence: ; Tel.: +7-(963)-316-0808
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6
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Fisher JF, Mobashery S. β-Lactams against the Fortress of the Gram-Positive Staphylococcus aureus Bacterium. Chem Rev 2021; 121:3412-3463. [PMID: 33373523 PMCID: PMC8653850 DOI: 10.1021/acs.chemrev.0c01010] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The biological diversity of the unicellular bacteria-whether assessed by shape, food, metabolism, or ecological niche-surely rivals (if not exceeds) that of the multicellular eukaryotes. The relationship between bacteria whose ecological niche is the eukaryote, and the eukaryote, is often symbiosis or stasis. Some bacteria, however, seek advantage in this relationship. One of the most successful-to the disadvantage of the eukaryote-is the small (less than 1 μm diameter) and nearly spherical Staphylococcus aureus bacterium. For decades, successful clinical control of its infection has been accomplished using β-lactam antibiotics such as the penicillins and the cephalosporins. Over these same decades S. aureus has perfected resistance mechanisms against these antibiotics, which are then countered by new generations of β-lactam structure. This review addresses the current breadth of biochemical and microbiological efforts to preserve the future of the β-lactam antibiotics through a better understanding of how S. aureus protects the enzyme targets of the β-lactams, the penicillin-binding proteins. The penicillin-binding proteins are essential enzyme catalysts for the biosynthesis of the cell wall, and understanding how this cell wall is integrated into the protective cell envelope of the bacterium may identify new antibacterials and new adjuvants that preserve the efficacy of the β-lactams.
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Affiliation(s)
- Jed F Fisher
- Department of Chemistry and Biochemistry, McCourtney Hall, University of Notre Dame, Notre Dame Indiana 46556, United States
| | - Shahriar Mobashery
- Department of Chemistry and Biochemistry, McCourtney Hall, University of Notre Dame, Notre Dame Indiana 46556, United States
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