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Seebald LM, Haratipour P, Jacobs MR, Bernstein HM, Kashemirov BA, McKenna CE, Imperiali B. Uridine Bisphosphonates Differentiate Phosphoglycosyl Transferase Superfamilies. J Am Chem Soc 2024; 146:3220-3229. [PMID: 38271668 PMCID: PMC10922802 DOI: 10.1021/jacs.3c11402] [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: 01/27/2024]
Abstract
Complex bacterial glycoconjugates drive interactions between pathogens, symbionts, and their human hosts. Glycoconjugate biosynthesis is initiated at the membrane interface by phosphoglycosyl transferases (PGTs), which catalyze the transfer of a phosphosugar from a soluble uridine diphosphosugar (UDP-sugar) substrate to a membrane-bound polyprenol-phosphate (Pren-P). The two distinct superfamilies of PGT enzymes (polytopic and monotopic) show striking differences in their structure and mechanism. We designed and synthesized a series of uridine bisphosphonates (UBPs), wherein the diphosphate of the UDP and UDP-sugar is replaced by a substituted methylene bisphosphonate (CXY-BPs; X/Y = F/F, Cl/Cl, (S)-H/F, (R)-H/F, H/H, CH3/CH3). UBPs and UBPs incorporating an N-acetylglucosamine (GlcNAc) substituent at the β-phosphonate were evaluated as inhibitors of a polytopic PGT (WecA from Thermotoga maritima) and a monotopic PGT (PglC from Campylobacter jejuni). Although CHF-BP most closely mimics diphosphate with respect to its acid/base properties, the less basic CF2-BP conjugate more strongly inhibited PglC, whereas the more basic CH2-BP analogue was the strongest inhibitor of WecA. These surprising differences indicate different modes of ligand binding for the different PGT superfamilies, implicating a modified P-O- interaction with the structural Mg2+. For the monoPGT enzyme, the two diastereomeric CHF-BP conjugates, which feature a chiral center at the Pα-CHF-Pβ carbon, also exhibited strikingly different binding affinities and the inclusion of GlcNAc with the native α-anomer configuration significantly improved binding affinity. UBP-sugars are thus revealed as informative new mechanistic probes of PGTs that may aid development of novel antibiotic agents for the exclusively prokaryotic monoPGT superfamily.
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Affiliation(s)
- Leah M. Seebald
- Department of Biology and Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Pouya Haratipour
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089, USA
| | - Michaela R. Jacobs
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089, USA
| | - Hannah M. Bernstein
- Department of Biology and Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Boris A. Kashemirov
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089, USA
| | - Charles E. McKenna
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089, USA
| | - Barbara Imperiali
- Department of Biology and Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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2
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Li X, Ma Z, Tang Q, Gui Z, Zhang B, Sun G, Li J, Li J, Li M, Li X, Ma H, Ye X. 8-octyl berberine combats Staphylococcus aureus by preventing peptidoglycan synthesis. Eur J Pharm Sci 2023; 191:106602. [PMID: 37806408 DOI: 10.1016/j.ejps.2023.106602] [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: 08/01/2023] [Revised: 09/14/2023] [Accepted: 10/03/2023] [Indexed: 10/10/2023]
Abstract
Staphylococcus aureus is an important pathogenic bacterium responsible for various organ infections. The serious side effects and the development of antibiotic resistance have rendered the antibiotic therapy against S. aureus increasingly challenging, emphasizing the pressing need for the exploration of novel therapeutic agents. Our research has uncovered the promising antimicrobial properties of 8-octyl berberine (OBBR), a novel compound derived from berberine (BBR), against S. aureus. OBBR exhibited a minimum inhibitory concentration (MIC) of 1.0 μg/mL, which closely approximated that of levofloxacin. Intriguingly, a multipassage resistance assay demonstrated that the MIC of OBBR against S. aureus remained relatively stable, while levofloxacin exhibited a 4-fold increase over 20 days, suggesting that OBBR was less prone to inducing resistance. Mechanistically, our investigation, employing Zeta potential measurements, flow cytometry, scanning electron microscopy, and transmission electron microscopy, unveiled that OBBR induced morphological alterations in the bacteria. Furthermore, it disrupted the bacterial cell wall and membrane by altering membrane potential and compromising membrane integrity. These actions culminated in bacterial disintegration and apoptosis. Transcriptomic analysis shed light on significant downregulation of gene ontology terms, predominantly associated with membranes. The Kyoto Encyclopedia of Genes and Genomes pathway enrichment analysis implicated OBBR in disturbing peptidoglycan biosynthesis, with the membrane protein MraY emerging as a potential target for OBBR's action against S. aureus. Notably, experiments involving the overexpression of MraY confirmed OBBR's inhibitory effect on peptidoglycan synthesis. Furthermore, molecular docking and cellular thermal shift assay revealed OBBR's direct interaction with MraY, potentially leading to the inhibition of the enzymatic activity of MraY and, consequently, impeding peptidoglycan synthesis. In summary, OBBR, by targeting MraY and inhibiting peptidoglycan synthesis, emerges as a promising alternative antibiotic against S. aureus, offering potential advantages in terms of limited drug resistance development.
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Affiliation(s)
- Xiaoduo Li
- Engineering Research Center of Coptis Development and Utilization (Ministry of Education), School of Life Sciences, Southwest University, Chongqing, 400715, China; Department of Clinical Laboratory, AnShun City People's Hospital, Guizhou 561000, China
| | - Zhengcai Ma
- Engineering Research Center of Coptis Development and Utilization (Ministry of Education), School of Life Sciences, Southwest University, Chongqing, 400715, China
| | - Qin Tang
- College of Pharmaceutical Sciences and Chinese Medicine, Southwest University, Chongqing, 400715, China
| | - Zhenwei Gui
- Engineering Research Center of Coptis Development and Utilization (Ministry of Education), School of Life Sciences, Southwest University, Chongqing, 400715, China
| | - Biao Zhang
- Department of Clinical Laboratory, AnShun City People's Hospital, Guizhou 561000, China
| | - Guang Sun
- Department of Clinical Laboratory, AnShun City People's Hospital, Guizhou 561000, China
| | - Jingwei Li
- Engineering Research Center of Coptis Development and Utilization (Ministry of Education), School of Life Sciences, Southwest University, Chongqing, 400715, China
| | - Juan Li
- College of Pharmaceutical Sciences and Chinese Medicine, Southwest University, Chongqing, 400715, China
| | - Mengmeng Li
- Engineering Research Center of Coptis Development and Utilization (Ministry of Education), School of Life Sciences, Southwest University, Chongqing, 400715, China
| | - Xuegang Li
- College of Pharmaceutical Sciences and Chinese Medicine, Southwest University, Chongqing, 400715, China
| | - Hang Ma
- College of Pharmaceutical Sciences and Chinese Medicine, Southwest University, Chongqing, 400715, China.
| | - Xiaoli Ye
- Engineering Research Center of Coptis Development and Utilization (Ministry of Education), School of Life Sciences, Southwest University, Chongqing, 400715, China.
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3
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Kumar G, Engle K. Natural products acting against S. aureus through membrane and cell wall disruption. Nat Prod Rep 2023; 40:1608-1646. [PMID: 37326041 DOI: 10.1039/d2np00084a] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Covering: 2015 to 2022Staphylococcus aureus (S. aureus) is responsible for several community and hospital-acquired infections with life-threatening complications such as bacteraemia, endocarditis, meningitis, liver abscess, and spinal cord epidural abscess. In recent decades, the abuse and misuse of antibiotics in humans, animals, plants, and fungi and the treatment of nonmicrobial diseases have led to the rapid emergence of multidrug-resistant pathogens. The bacterial wall is a complex structure consisting of the cell membrane, peptidoglycan cell wall, and various associated polymers. The enzymes involved in bacterial cell wall synthesis are established antibiotic targets and continue to be a central focus for antibiotic development. Natural products play a vital role in drug discovery and development. Importantly, natural products provide a starting point for active/lead compounds that sometimes need modification based on structural and biological properties to meet the drug criteria. Notably, microorganisms and plant metabolites have contributed as antibiotics for noninfectious diseases. In this study, we have summarized the recent advances in understanding the activity of the drugs or agents of natural origin that directly inhibit the bacterial membrane, membrane components, and membrane biosynthetic enzymes by targeting membrane-embedded proteins. We also discussed the unique aspects of the active mechanisms of established antibiotics or new agents.
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Affiliation(s)
- Gautam Kumar
- Department of Natural Products, Chemical Sciences, National Institute of Pharmaceutical Education and Research-Hyderabad, Hyderabad, Balanagar, 500037, India.
| | - Kritika Engle
- Department of Natural Products, Chemical Sciences, National Institute of Pharmaceutical Education and Research-Hyderabad, Hyderabad, Balanagar, 500037, India.
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4
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Seebald LM, Haratipour P, Jacobs MR, Bernstein HM, Kashemirov BA, McKenna CE, Imperiali B. Uridine Bisphosphonates Differentiate Phosphoglycosyl Transferase Superfamilies. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.09.19.558431. [PMID: 37786673 PMCID: PMC10541605 DOI: 10.1101/2023.09.19.558431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
Complex bacterial glycoconjugates are essential for bacterial survival, and drive interactions between pathogens and symbionts, and their human hosts. Glycoconjugate biosynthesis is initiated at the membrane interface by phosphoglycosyl transferases (PGTs), which catalyze the transfer of a phosphosugar from a soluble uridine diphospho-sugar (UDP-sugar) substrate to a membrane-bound polyprenol-phosphate (Pren-P). Two distinct superfamilies of PGT enzymes, denoted as polytopic and monotopic, carry out this reaction but show striking differences in structure and mechanism. With the goal of creating non-hydrolyzable mimics (UBP-sugars) of the UDP-sugar substrates as chemical probes to interrogate critical aspects of these essential enzymes, we designed and synthesized a series of uridine bisphosphonates (UBPs), wherein the diphosphate bridging oxygen of the UDP and UDP-sugar is replaced by a substituted methylene group (CXY; X/Y = F/F, Cl/Cl, (S)-H/F, (R)-H/F, H/H, CH3/CH3). These compounds, which incorporated as the conjugating sugar an N-acetylglucosamine (GlcNAc) substituent at the β-phosphonate, were evaluated as inhibitors of a representative polytopic PGT (WecA from Thermotoga maritima) and a monotopic PGT (PglC from Campylobacter jejuni). Although CHF-BP most closely mimics pyrophosphate with respect to its acid/base properties, the less basic CF2-BP conjugate most strongly inhibited PglC, whereas the more basic CH2-BP analogue was the strongest inhibitor of WecA. These surprising differences indicate different modes of ligand binding for the different PGT superfamilies implicating a modified P-O- interaction with the structural Mg2+, consistent with their catalytic divergence. Furthermore, at least for the monoPGT superfamily example, this was not the sole determinant of ligand binding: the two diastereomeric CHF-BP conjugates, which feature a chiral center at the Pα-CHF-Pβ carbon, exhibited strikingly different binding affinities and the inclusion of GlcNAc with the native α-anomer configuration significantly improved binding affinity. UBP-sugars are a valuable tool for elucidating the structures and mechanisms of the distinct PGT superfamilies and offer a promising scaffold to develop novel antibiotic agents for the exclusively prokaryotic monoPGT superfamily.
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Affiliation(s)
- Leah M. Seebald
- Department of Biology and Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Pouya Haratipour
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089, USA
| | - Michaela R. Jacobs
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089, USA
| | - Hannah M. Bernstein
- Department of Biology and Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Boris A. Kashemirov
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089, USA
| | - Charles E. McKenna
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089, USA
| | - Barbara Imperiali
- Department of Biology and Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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5
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Rohrbacher C, Zscherp R, Weck SC, Klahn P, Ducho C. Synthesis of an Antimicrobial Enterobactin-Muraymycin Conjugate for Improved Activity Against Gram-Negative Bacteria. Chemistry 2023; 29:e202202408. [PMID: 36222466 PMCID: PMC10107792 DOI: 10.1002/chem.202202408] [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: 08/02/2022] [Indexed: 12/12/2022]
Abstract
Overcoming increasing antibiotic resistance requires the development of novel antibacterial agents that address new targets in bacterial cells. Naturally occurring nucleoside antibiotics (such as muraymycins) inhibit the bacterial membrane protein MraY, a clinically unexploited essential enzyme in peptidoglycan (cell wall) biosynthesis. Even though a range of synthetic muraymycin analogues has already been reported, they generally suffer from limited cellular uptake and a lack of activity against Gram-negative bacteria. We herein report an approach to overcome these hurdles: a synthetic muraymycin analogue has been conjugated to a siderophore, i. e. the enterobactin derivative EntKL , to increase the cellular uptake into Gram-negative bacteria. The resultant conjugate showed significantly improved antibacterial activity against an efflux-deficient E. coli strain, thus providing a proof-of-concept of this novel approach and a starting point for the future optimisation of such conjugates towards potent agents against Gram-negative pathogens.
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Affiliation(s)
- Christian Rohrbacher
- Department of Pharmacy, Pharmaceutical and Medicinal Chemistry, Saarland University, Campus C2 3, 66123, Saarbrücken, Germany
| | - Robert Zscherp
- Institute of Organic Chemistry, Technische Universität Braunschweig, Hagenring 30, 38106, Braunschweig, Germany
| | - Stefanie C Weck
- Department of Pharmacy, Pharmaceutical and Medicinal Chemistry, Saarland University, Campus C2 3, 66123, Saarbrücken, Germany
| | - Philipp Klahn
- Institute of Organic Chemistry, Technische Universität Braunschweig, Hagenring 30, 38106, Braunschweig, Germany.,Department of Chemistry and Molecular Biology, Division of Organic and Medicinal Chemistry, University of Gothenburg, Kemigården 4, 412 96, Göteborg, Sweden
| | - Christian Ducho
- Department of Pharmacy, Pharmaceutical and Medicinal Chemistry, Saarland University, Campus C2 3, 66123, Saarbrücken, Germany
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Nakaya T, Yabe M, Mashalidis EH, Sato T, Yamamoto K, Hikiji Y, Katsuyama A, Shinohara M, Minato Y, Takahashi S, Horiuchi M, Yokota SI, Lee SY, Ichikawa S. Synthesis of macrocyclic nucleoside antibacterials and their interactions with MraY. Nat Commun 2022; 13:7575. [PMID: 36539416 PMCID: PMC9768162 DOI: 10.1038/s41467-022-35227-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Accepted: 11/23/2022] [Indexed: 12/24/2022] Open
Abstract
The development of new antibacterial drugs with different mechanisms of action is urgently needed to address antimicrobial resistance. MraY is an essential membrane enzyme required for bacterial cell wall synthesis. Sphaerimicins are naturally occurring macrocyclic nucleoside inhibitors of MraY and are considered a promising target in antibacterial discovery. However, developing sphaerimicins as antibacterials has been challenging due to their complex macrocyclic structures. In this study, we construct their characteristic macrocyclic skeleton via two key reactions. Having then determined the structure of a sphaerimicin analogue bound to MraY, we use a structure-guided approach to design simplified sphaerimicin analogues. These analogues retain potency against MraY and exhibit potent antibacterial activity against Gram-positive bacteria, including clinically isolated drug resistant strains of S. aureus and E. faecium. Our study combines synthetic chemistry, structural biology, and microbiology to provide a platform for the development of MraY inhibitors as antibacterials against drug-resistant bacteria.
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Affiliation(s)
- Takeshi Nakaya
- grid.39158.360000 0001 2173 7691Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo, 060-0812 Japan
| | - Miyuki Yabe
- grid.39158.360000 0001 2173 7691Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo, 060-0812 Japan
| | - Ellene H. Mashalidis
- grid.26009.3d0000 0004 1936 7961Department of Biochemistry, Duke University School of Medicine, Durham, NC 27710 USA ,grid.410513.20000 0000 8800 7493Present Address: Pfizer Global Research & Development, Eastern Point Road, Groton, CT 06340 USA
| | - Toyotaka Sato
- grid.39158.360000 0001 2173 7691Laboratory of Veterinary Hygiene, School/Faculty of Veterinary Medicine, Hokkaido University, Kita-18, Nishi-9, Kita-ku, Sapporo, 060-0818 Japan ,grid.39158.360000 0001 2173 7691Graduate School of Infectious Diseases, Hokkaido University, Sapporo, 060-0818 Japan
| | - Kazuki Yamamoto
- grid.39158.360000 0001 2173 7691Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo, 060-0812 Japan ,grid.39158.360000 0001 2173 7691Center for Research and Education on Drug Discovery, Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo, 060-0812 Japan
| | - Yuta Hikiji
- grid.39158.360000 0001 2173 7691Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo, 060-0812 Japan
| | - Akira Katsuyama
- grid.39158.360000 0001 2173 7691Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo, 060-0812 Japan ,grid.39158.360000 0001 2173 7691Center for Research and Education on Drug Discovery, Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo, 060-0812 Japan ,grid.39158.360000 0001 2173 7691Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo, 060-0812 Sapporo, Japan
| | - Motoko Shinohara
- grid.256115.40000 0004 1761 798XDepartment of Microbiology, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192 Japan
| | - Yusuke Minato
- grid.256115.40000 0004 1761 798XDepartment of Microbiology, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192 Japan
| | - Satoshi Takahashi
- grid.470107.5Division of Laboratory Medicine, Sapporo Medical University Hospital, South-1, West-16, Chuo-ku, Sapporo, 060-8543 Japan ,grid.263171.00000 0001 0691 0855Department of Infection Control and Laboratory Medicine, Sapporo Medical University School of Medicine, South-1, West-16, Chuo-ku, Sapporo, 060-8543 Japan
| | - Motohiro Horiuchi
- grid.39158.360000 0001 2173 7691Laboratory of Veterinary Hygiene, School/Faculty of Veterinary Medicine, Hokkaido University, Kita-18, Nishi-9, Kita-ku, Sapporo, 060-0818 Japan ,grid.39158.360000 0001 2173 7691Graduate School of Infectious Diseases, Hokkaido University, Sapporo, 060-0818 Japan
| | - Shin-ichi Yokota
- grid.263171.00000 0001 0691 0855Department of Microbiology, Sapporo Medical University School of Medicine, South-1, West-17, Chuo-ku, Sapporo, 060-8556 Japan
| | - Seok-Yong Lee
- grid.26009.3d0000 0004 1936 7961Department of Biochemistry, Duke University School of Medicine, Durham, NC 27710 USA
| | - Satoshi Ichikawa
- grid.39158.360000 0001 2173 7691Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo, 060-0812 Japan ,grid.39158.360000 0001 2173 7691Center for Research and Education on Drug Discovery, Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo, 060-0812 Japan ,grid.39158.360000 0001 2173 7691Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo, 060-0812 Sapporo, Japan
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7
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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: 41] [Impact Index Per Article: 13.7] [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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8
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McErlean M, Liu X, Cui Z, Gust B, Van Lanen SG. Identification and characterization of enzymes involved in the biosynthesis of pyrimidine nucleoside antibiotics. Nat Prod Rep 2021; 38:1362-1407. [PMID: 33404015 DOI: 10.1039/d0np00064g] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Covering: up to September 2020 Hundreds of nucleoside-based natural products have been isolated from various microorganisms, several of which have been utilized in agriculture as pesticides and herbicides, in medicine as therapeutics for cancer and infectious disease, and as molecular probes to study biological processes. Natural products consisting of structural modifications of each of the canonical nucleosides have been discovered, ranging from simple modifications such as single-step alkylations or acylations to highly elaborate modifications that dramatically alter the nucleoside scaffold and require multiple enzyme-catalyzed reactions. A vast amount of genomic information has been uncovered the past two decades, which has subsequently allowed the first opportunity to interrogate the chemically intriguing enzymatic transformations for the latter type of modifications. This review highlights (i) the discovery and potential applications of structurally complex pyrimidine nucleoside antibiotics for which genetic information is known, (ii) the established reactions that convert the canonical pyrimidine into a new nucleoside scaffold, and (iii) the important tailoring reactions that impart further structural complexity to these molecules.
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Affiliation(s)
- M McErlean
- Department of Pharmaceutical Science, College of Pharmacy, University of Kentucky, USA.
| | - X Liu
- Department of Pharmaceutical Science, College of Pharmacy, University of Kentucky, USA.
| | - Z Cui
- Department of Pharmaceutical Science, College of Pharmacy, University of Kentucky, USA.
| | - B Gust
- Pharmaceutical Institute, Department of Pharmaceutical Biology, University of Tübingen, Germany
| | - S G Van Lanen
- Department of Pharmaceutical Science, College of Pharmacy, University of Kentucky, USA.
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9
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Niro G, Weck SC, Ducho C. Merging Natural Products: Muraymycin-Sansanmycin Hybrid Structures as Novel Scaffolds for Potential Antibacterial Agents. Chemistry 2020; 26:16875-16887. [PMID: 32897546 PMCID: PMC7756498 DOI: 10.1002/chem.202003387] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 09/07/2020] [Indexed: 02/01/2023]
Abstract
To overcome bacterial resistances, the need for novel antimicrobial agents is urgent. The class of so-called nucleoside antibiotics furnishes promising candidates for the development of new antibiotics, as these compounds block a clinically unexploited bacterial target: the integral membrane protein MraY, a key enzyme in cell wall (peptidoglycan) biosynthesis. Nucleoside antibiotics exhibit remarkable structural diversity besides their uridine-derived core motifs. Some sub-classes also show specific selectivities towards different Gram-positive and Gram-negative bacteria, which are poorly understood so far. Herein, the synthesis of a novel hybrid structure is reported, derived from the 5'-defunctionalized uridine core moiety of muraymycins and the peptide chain of sansanmycin B, as a new scaffold for the development of antimicrobial agents. The reported muraymycin-sansanmycin hybrid scaffold showed nanomolar activity against the bacterial target enzyme MraY, but displayed no significant antibacterial activity against S. aureus, E. coli, and P. aeruginosa.
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Affiliation(s)
- Giuliana Niro
- Department of Pharmacy, Pharmaceutical and Medicinal ChemistrySaarland UniversityCampus C2 366123SaarbrückenGermany
| | - Stefanie C. Weck
- Department of Pharmacy, Pharmaceutical and Medicinal ChemistrySaarland UniversityCampus C2 366123SaarbrückenGermany
| | - Christian Ducho
- Department of Pharmacy, Pharmaceutical and Medicinal ChemistrySaarland UniversityCampus C2 366123SaarbrückenGermany
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10
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Heib A, Niro G, Weck SC, Koppermann S, Ducho C. Muraymycin Nucleoside Antibiotics: Structure-Activity Relationship for Variations in the Nucleoside Unit. Molecules 2019; 25:molecules25010022. [PMID: 31861655 PMCID: PMC6983020 DOI: 10.3390/molecules25010022] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 12/10/2019] [Accepted: 12/12/2019] [Indexed: 12/04/2022] Open
Abstract
Muraymycins are a subclass of naturally occurring nucleoside antibiotics with promising antibacterial activity. They inhibit the bacterial enzyme translocase I (MraY), a clinically yet unexploited target mediating an essential intracellular step of bacterial peptidoglycan biosynthesis. Several structurally simplified muraymycin analogues have already been synthesized for structure–activity relationship (SAR) studies. We now report on novel derivatives with unprecedented variations in the nucleoside unit. For the synthesis of these new muraymycin analogues, we employed a bipartite approach facilitating the introduction of different nucleosyl amino acid motifs. This also included thymidine- and 5-fluorouridine-derived nucleoside core structures. Using an in vitro assay for MraY activity, it was found that the introduction of substituents in the 5-position of the pyrimidine nucleobase led to a significant loss of inhibitory activity towards MraY. The loss of nucleobase aromaticity (by reduction of the uracil C5-C6 double bond) resulted in a ca. tenfold decrease in inhibitory potency. In contrast, removal of the 2′-hydroxy group furnished retained activity, thus demonstrating that modifications of the ribose moiety might be well-tolerated. Overall, these new SAR insights will guide the future design of novel muraymycin analogues for their potential development towards antibacterial drug candidates.
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11
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Leyerer K, Koppermann S, Ducho C. Solid Phase‐Supported Synthesis of Muraymycin Analogues. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901256] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Kristin Leyerer
- Department of Pharmacy Pharmaceutical and Medicinal Chemistry Saarland University Campus C2 3 66123 Saarbrücken Germany
| | - Stefan Koppermann
- Department of Pharmacy Pharmaceutical and Medicinal Chemistry Saarland University Campus C2 3 66123 Saarbrücken Germany
| | - Christian Ducho
- Department of Pharmacy Pharmaceutical and Medicinal Chemistry Saarland University Campus C2 3 66123 Saarbrücken Germany
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12
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Mashalidis EH, Kaeser B, Terasawa Y, Katsuyama A, Kwon DY, Lee K, Hong J, Ichikawa S, Lee SY. Chemical logic of MraY inhibition by antibacterial nucleoside natural products. Nat Commun 2019; 10:2917. [PMID: 31266949 PMCID: PMC6606608 DOI: 10.1038/s41467-019-10957-9] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 06/06/2019] [Indexed: 01/01/2023] Open
Abstract
Novel antibacterial agents are needed to address the emergence of global antibiotic resistance. MraY is a promising candidate for antibiotic development because it is the target of five classes of naturally occurring nucleoside inhibitors with potent antibacterial activity. Although these natural products share a common uridine moiety, their core structures vary substantially and they exhibit different activity profiles. An incomplete understanding of the structural and mechanistic basis of MraY inhibition has hindered the translation of these compounds to the clinic. Here we present crystal structures of MraY in complex with representative members of the liposidomycin/caprazamycin, capuramycin, and mureidomycin classes of nucleoside inhibitors. Our structures reveal cryptic druggable hot spots in the shallow inhibitor binding site of MraY that were not previously appreciated. Structural analyses of nucleoside inhibitor binding provide insights into the chemical logic of MraY inhibition, which can guide novel approaches to MraY-targeted antibiotic design.
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Affiliation(s)
- Ellene H Mashalidis
- Department of Biochemistry, Duke University Medical Center, 303 Research Drive, Durham, NC, 27710, USA
| | - Benjamin Kaeser
- Department of Biochemistry, Duke University Medical Center, 303 Research Drive, Durham, NC, 27710, USA
| | - Yuma Terasawa
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nihi-6, Kita-ku, Sapporo, 060-0812, Japan
| | - Akira Katsuyama
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nihi-6, Kita-ku, Sapporo, 060-0812, Japan
| | - Do-Yeon Kwon
- Department of Chemistry, Duke University, Durham, NC, 27708, USA
| | - Kiyoun Lee
- Department of Chemistry, The Catholic University of Korea, Bucheon, 14662, Korea
| | - Jiyong Hong
- Department of Chemistry, Duke University, Durham, NC, 27708, USA
| | - Satoshi Ichikawa
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nihi-6, Kita-ku, Sapporo, 060-0812, Japan
| | - Seok-Yong Lee
- Department of Biochemistry, Duke University Medical Center, 303 Research Drive, Durham, NC, 27710, USA.
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13
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Patel B, Ryan P, Makwana V, Zunk M, Rudrawar S, Grant G. Caprazamycins: Promising lead structures acting on a novel antibacterial target MraY. Eur J Med Chem 2019; 171:462-474. [DOI: 10.1016/j.ejmech.2019.01.071] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 01/24/2019] [Accepted: 01/28/2019] [Indexed: 11/29/2022]
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14
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Wiker F, Hauck N, Grond S, Gust B. Caprazamycins: Biosynthesis and structure activity relationship studies. Int J Med Microbiol 2019; 309:319-324. [PMID: 31138496 DOI: 10.1016/j.ijmm.2019.05.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 05/14/2019] [Accepted: 05/20/2019] [Indexed: 11/28/2022] Open
Abstract
Cell wall biosynthesis represents a valid target for antibacterial action but only a limited number of chemical structure classes selectively interact with specific enzymes or protein structures like transporters of the cell envelope. The integral membrane protein MraY translocase is essential for peptidoglycan biosynthesis catalysing the transfer of the peptidoglycan precursor phospho-MurNAc-pentapeptide to the lipid carrier undecaprenyl phosphate, thereby generating the cell wall intermediate lipid I. Not present in eukaryotic cells, MraY is a member of the superfamily of yet not well-understood integral membrane enzymes which involve proteins for bacterial lipopolysaccharide and teichoic acid or eukaryotic N-linked saccharides biosynthesis. Different natural nucleoside antibiotics as inhibitors of MraY translocase have been discovered comprising a glycosylated heterocyclic pyrimidin base among other potential lipid-, peptidic- or sugar moieties. Caprazamycins are liponucleoside antibiotics isolated from Streptomyces sp. MK730-62F2. They possess activity in vitro against Gram-positive bacteria, in particular against the genus Mycobacterium including M. intracellulare, M. avium and M. tuberculosis. Structural elucidation revealed the (+)-caprazol core skeleton as a unique moiety, the caprazamycins share with other MraY inhibitors such as the liposidomycins, A-90289 and the muraminomicins. They also share structural features such as uridyl-, aminoribosyl- and fatty acyl-moieties with other MraY translocase inhibitors like FR-900493 and the muraymycins. Intensive studies on their biosynthesis during the last decade identified not only common initial biosynthetic steps, but also revealed possible branching points towards individual biosynthesis of the respective compound. Structural diversity of caprazamycins was generated by feeding experiments, genetic engineering of the biosynthetic gene clusters and chemical synthesis for structure activity relationship studies with its target, MraY translocase.
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Affiliation(s)
- Franziska Wiker
- Pharmaceutical Biology, Pharmaceutical Institute, University of Tübingen, 72076 Tübingen, Germany
| | - Nils Hauck
- Pharmaceutical Biology, Pharmaceutical Institute, University of Tübingen, 72076 Tübingen, Germany
| | - Stephanie Grond
- Institute of Organic Chemistry, University of Tübingen, 72076 Tübingen, Germany
| | - Bertolt Gust
- Pharmaceutical Biology, Pharmaceutical Institute, University of Tübingen, 72076 Tübingen, Germany.
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15
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Linder R, Ducho C. Unified Synthesis of Densely Functionalized Amino Acid Building Blocks for the Preparation of Caprazamycin Nucleoside Antibiotics. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ruth Linder
- Department of Pharmacy, Pharmaceutical and Medicinal Chemistry; Saarland University; Campus C2 3 66123 Saarbrücken Germany
| | - Christian Ducho
- Department of Pharmacy, Pharmaceutical and Medicinal Chemistry; Saarland University; Campus C2 3 66123 Saarbrücken Germany
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16
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Wiegmann D, Koppermann S, Ducho C. Aminoribosylated Analogues of Muraymycin Nucleoside Antibiotics. Molecules 2018; 23:molecules23123085. [PMID: 30486316 PMCID: PMC6320880 DOI: 10.3390/molecules23123085] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Revised: 11/21/2018] [Accepted: 11/22/2018] [Indexed: 01/15/2023] Open
Abstract
Nucleoside antibiotics are uridine-derived natural products that inhibit the bacterial membrane protein MraY. MraY is a key enzyme in the membrane-associated intracellular stages of peptidoglycan biosynthesis and therefore considered to be a promising, yet unexploited target for novel antibacterial agents. Muraymycins are one subclass of such naturally occurring MraY inhibitors. As part of structure-activity relationship (SAR) studies on muraymycins and their analogues, we now report on novel derivatives with different attachment of one characteristic structural motif, i.e., the aminoribose moiety normally linked to the muraymycin glycyluridine core unit. Based on considerations derived from an X-ray co-crystal structure, we designed and synthesised muraymycin analogues having the aminoribose attached (via a linker) to either the glycyluridine amino group or to the uracil nucleobase. Reference compounds bearing the non-aminoribosylated linker units were also prepared. It was found that the novel aminoribosylated analogues were inactive as MraY inhibitors in vitro, but that the glycyluridine-modified reference compound retained most of the inhibitory potency relative to the unmodified parent muraymycin analogue. These results point to 6′-N-alkylated muraymycin analogues as a potential novel variation of the muraymycin scaffold for future SAR optimisation.
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Affiliation(s)
- Daniel Wiegmann
- Department of Pharmacy, Pharmaceutical and Medicinal Chemistry, Saarland University, Campus C2 3, 66123 Saarbrücken, Germany.
| | - Stefan Koppermann
- Department of Pharmacy, Pharmaceutical and Medicinal Chemistry, Saarland University, Campus C2 3, 66123 Saarbrücken, Germany.
| | - Christian Ducho
- Department of Pharmacy, Pharmaceutical and Medicinal Chemistry, Saarland University, Campus C2 3, 66123 Saarbrücken, Germany.
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17
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Analogues of Muraymycin Nucleoside Antibiotics with Epimeric Uridine-Derived Core Structures. Molecules 2018; 23:molecules23112868. [PMID: 30400295 PMCID: PMC6278576 DOI: 10.3390/molecules23112868] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 10/28/2018] [Accepted: 10/30/2018] [Indexed: 11/17/2022] Open
Abstract
Nucleoside analogues have found widespread application as antiviral and antitumor agents, but not yet as antibacterials. Naturally occurring uridine-derived ‘nucleoside antibiotics’ target the bacterial membrane protein MraY, an enzyme involved in peptidoglycan biosynthesis and a promising target for the development of novel antibacterial agents. Muraymycins represent a nucleoside-peptide subgroup of such MraY-inhibiting natural products. As part of detailed structure-activity relationship (SAR) studies on muraymycins and their analogues, we now report novel insights into the effects of stereochemical variations in the nucleoside core structure. Using a simplified version of the muraymycin scaffold, it was shown that some formal inversions of stereochemistry led to about one order of magnitude loss in inhibitory potency towards the target enzyme MraY. In contrast, epimers of the core motif with retained inhibitory activity were also identified. These 5′,6′-anti-configured analogues might serve as novel chemically tractable variations of the muraymycin scaffold for the future development of uridine-derived drug candidates.
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18
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Dik DA, Fisher JF, Mobashery S. Cell-Wall Recycling of the Gram-Negative Bacteria and the Nexus to Antibiotic Resistance. Chem Rev 2018; 118:5952-5984. [PMID: 29847102 PMCID: PMC6855303 DOI: 10.1021/acs.chemrev.8b00277] [Citation(s) in RCA: 121] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The importance of the cell wall to the viability of the bacterium is underscored by the breadth of antibiotic structures that act by blocking key enzymes that are tasked with cell-wall creation, preservation, and regulation. The interplay between cell-wall integrity, and the summoning forth of resistance mechanisms to deactivate cell-wall-targeting antibiotics, involves exquisite orchestration among cell-wall synthesis and remodeling and the detection of and response to the antibiotics through modulation of gene regulation by specific effectors. Given the profound importance of antibiotics to the practice of medicine, the assertion that understanding this interplay is among the most fundamentally important questions in bacterial physiology is credible. The enigmatic regulation of the expression of the AmpC β-lactamase, a clinically significant and highly regulated resistance response of certain Gram-negative bacteria to the β-lactam antibiotics, is the exemplar of this challenge. This review gives a current perspective to this compelling, and still not fully solved, 35-year enigma.
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Affiliation(s)
- David A. Dik
- Department of Chemistry and Biochemistry, McCourtney Hall, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - 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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19
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Koppermann S, Cui Z, Fischer PD, Wang X, Ludwig J, Thorson JS, Van Lanen SG, Ducho C. Insights into the Target Interaction of Naturally Occurring Muraymycin Nucleoside Antibiotics. ChemMedChem 2018; 13:779-784. [PMID: 29438582 PMCID: PMC6019934 DOI: 10.1002/cmdc.201700793] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 02/02/2018] [Indexed: 11/08/2022]
Abstract
Muraymycins are a subclass of antimicrobially active uridine-derived natural products. Biological data on several muraymycin analogues have been reported, including some inhibitory in vitro activities toward their target protein, the bacterial membrane enzyme MraY. However, a structure-activity relationship (SAR) study on naturally occurring muraymycins based on such in vitro data has been missing so far. In this work, we report a detailed SAR investigation on representatives of the four muraymycin subgroups A-D using a fluorescence-based in vitro MraY assay. For some muraymycins, inhibition of MraY with IC50 values in the low-picomolar range was observed. These inhibitory potencies were compared with antibacterial activities and were correlated to modelling data derived from a previously reported X-ray crystal structure of MraY in complex with a muraymycin inhibitor. Overall, these results will pave the way for the development of muraymycin analogues with optimized properties as antibacterial drug candidates.
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Affiliation(s)
- Stefan Koppermann
- Department of Pharmacy, Pharmaceutical and Medicinal Chemistry, Saarland University, Campus C2 3, 66123, Saarbrücken, Germany
| | - Zheng Cui
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, 789 S. Limestone Street, Lexington, KY, 40536, USA
| | - Patrick D Fischer
- Department of Pharmacy, Pharmaceutical and Medicinal Chemistry, Saarland University, Campus C2 3, 66123, Saarbrücken, Germany
| | - Xiachang Wang
- Jiangsu Key Laboratory for Functional Substance of Chinese Medicine, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, P.R. China
- Center for Pharmaceutical Research and Innovation, College of Pharmacy, University of Kentucky, 789 S. Limestone Street, Lexington, KY, 40536, USA
| | - Jannine Ludwig
- Department of Pharmacy, Pharmaceutical and Medicinal Chemistry, Saarland University, Campus C2 3, 66123, Saarbrücken, Germany
| | - Jon S Thorson
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, 789 S. Limestone Street, Lexington, KY, 40536, USA
- Center for Pharmaceutical Research and Innovation, College of Pharmacy, University of Kentucky, 789 S. Limestone Street, Lexington, KY, 40536, USA
| | - Steven G Van Lanen
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, 789 S. Limestone Street, Lexington, KY, 40536, USA
| | - Christian Ducho
- Department of Pharmacy, Pharmaceutical and Medicinal Chemistry, Saarland University, Campus C2 3, 66123, Saarbrücken, Germany
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20
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Michailidou F, Chung C, Brown MJB, Bent AF, Naismith JH, Leavens WJ, Lynn SM, Sharma SV, Goss RJM. Pac13 is a Small, Monomeric Dehydratase that Mediates the Formation of the 3'-Deoxy Nucleoside of Pacidamycins. Angew Chem Int Ed Engl 2017; 56:12492-12497. [PMID: 28786545 PMCID: PMC5656905 DOI: 10.1002/anie.201705639] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Revised: 07/28/2017] [Indexed: 01/27/2023]
Abstract
The uridyl peptide antibiotics (UPAs), of which pacidamycin is a member, have a clinically unexploited mode of action and an unusual assembly. Perhaps the most striking feature of these molecules is the biosynthetically unique 3'-deoxyuridine that they share. This moiety is generated by an unusual, small and monomeric dehydratase, Pac13, which catalyses the dehydration of uridine-5'-aldehyde. Here we report the structural characterisation of Pac13 with a series of ligands, and gain insight into the enzyme's mechanism demonstrating that H42 is critical to the enzyme's activity and that the reaction is likely to proceed via an E1cB mechanism. The resemblance of the 3'-deoxy pacidamycin moiety with the synthetic anti-retrovirals, presents a potential opportunity for the utilisation of Pac13 in the biocatalytic generation of antiviral compounds.
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Affiliation(s)
- Freideriki Michailidou
- School of ChemistryUniversity of St AndrewsNorth HaughSt AndrewsFifeKY16 9STUK
- GSKStevenageSG1 2NYUK
| | | | | | - Andrew F. Bent
- School of ChemistryUniversity of St AndrewsNorth HaughSt AndrewsFifeKY16 9STUK
| | - James H. Naismith
- School of ChemistryUniversity of St AndrewsNorth HaughSt AndrewsFifeKY16 9STUK
| | | | | | - Sunil V. Sharma
- School of ChemistryUniversity of St AndrewsNorth HaughSt AndrewsFifeKY16 9STUK
| | - Rebecca J. M. Goss
- School of ChemistryUniversity of St AndrewsNorth HaughSt AndrewsFifeKY16 9STUK
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21
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Michailidou F, Chung C, Brown MJB, Bent AF, Naismith JH, Leavens WJ, Lynn SM, Sharma SV, Goss RJM. Pac13 is a Small, Monomeric Dehydratase that Mediates the Formation of the 3′‐Deoxy Nucleoside of Pacidamycins. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201705639] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Freideriki Michailidou
- School of Chemistry University of St Andrews North Haugh St Andrews Fife KY16 9ST UK
- GSK Stevenage SG1 2NY UK
| | | | | | - Andrew F. Bent
- School of Chemistry University of St Andrews North Haugh St Andrews Fife KY16 9ST UK
| | - James H. Naismith
- School of Chemistry University of St Andrews North Haugh St Andrews Fife KY16 9ST UK
| | | | | | - Sunil V. Sharma
- School of Chemistry University of St Andrews North Haugh St Andrews Fife KY16 9ST UK
| | - Rebecca J. M. Goss
- School of Chemistry University of St Andrews North Haugh St Andrews Fife KY16 9ST UK
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22
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Cao J, Yi F, Tian Q, Dang G, Si W, Liu S, Yu S. Targeting the gram-negative bacteria peptidoglycan synthase MraY as a new approach for monoclonal antibody anti-bacterial activity. Hum Vaccin Immunother 2017; 13:2086-2091. [PMID: 28605292 DOI: 10.1080/21645515.2017.1337613] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
The use of antibiotics to target bacteria is a well-validated approach for controlling infections in animals and humans. Peptidoglycan biosynthesis is a crucial process in bacteria, and the conserved peptidoglycan synthase MraY is an attractive target for drug design. However, due to the lack of detailed MraY structural information, antibiotics targeting MraY have not yet been developed. In the present study, 2 hydrophilic regions of MraY from Escherichia coli were expressed as a fusion protein and used to raise a monoclonal antibody in mice. We confirmed that the MraY amino acid sequence PESHFSKRGTPT forms the core epitope recognized by the monoclonal antibody M-H11. Furthermore, our results show that M-H11 effectively controls Escherichia coli BL21 (DE3) plysS infection, both in vitro and in vivo. Our results may be of great value in the search for novel approaches used to control bacterial infections.
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Affiliation(s)
- Jun Cao
- a Division of Bacterial Diseases, State Key Laboratory of Veterinary Biotechnology , Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences , Harbin , PR China
| | - Fei Yi
- a Division of Bacterial Diseases, State Key Laboratory of Veterinary Biotechnology , Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences , Harbin , PR China.,b College of Animal Science and Technology of Heilongjiang Bayi Agriculture University , Daqing , China
| | - Qiufeng Tian
- a Division of Bacterial Diseases, State Key Laboratory of Veterinary Biotechnology , Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences , Harbin , PR China.,b College of Animal Science and Technology of Heilongjiang Bayi Agriculture University , Daqing , China
| | - Guanghui Dang
- a Division of Bacterial Diseases, State Key Laboratory of Veterinary Biotechnology , Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences , Harbin , PR China
| | - Wei Si
- a Division of Bacterial Diseases, State Key Laboratory of Veterinary Biotechnology , Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences , Harbin , PR China
| | - Siguo Liu
- a Division of Bacterial Diseases, State Key Laboratory of Veterinary Biotechnology , Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences , Harbin , PR China
| | - Shenye Yu
- a Division of Bacterial Diseases, State Key Laboratory of Veterinary Biotechnology , Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences , Harbin , PR China
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23
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Bugg TDH. Nucleoside Natural Product Antibiotics Targetting Microbial Cell Wall Biosynthesis. ACTA ACUST UNITED AC 2017. [DOI: 10.1007/7355_2017_4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
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