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Abbas A, Barkhouse A, Hackenberger D, Wright GD. Antibiotic resistance: A key microbial survival mechanism that threatens public health. Cell Host Microbe 2024; 32:837-851. [PMID: 38870900 DOI: 10.1016/j.chom.2024.05.015] [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: 03/18/2024] [Revised: 05/13/2024] [Accepted: 05/17/2024] [Indexed: 06/15/2024]
Abstract
Antibiotic resistance (AMR) is a global public health threat, challenging the effectiveness of antibiotics in combating bacterial infections. AMR also represents one of the most crucial survival traits evolved by bacteria. Antibiotics emerged hundreds of millions of years ago as advantageous secondary metabolites produced by microbes. Consequently, AMR is equally ancient and hardwired into the genetic fabric of bacteria. Human use of antibiotics for disease treatment has created selection pressure that spurs the evolution of new resistance mechanisms and the mobilization of existing ones through bacterial populations in the environment, animals, and humans. This integrated web of resistance elements is genetically complex and mechanistically diverse. Addressing this mode of bacterial survival requires innovation and investment to ensure continued use of antibiotics in the future. Strategies ranging from developing new therapies to applying artificial intelligence in monitoring AMR and discovering new drugs are being applied to manage the growing AMR crisis.
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Affiliation(s)
- Amna Abbas
- David Braley Center for Antibiotic Discovery, Michael G. DeGroote Institute for Infectious Disease Research, Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Alexandra Barkhouse
- David Braley Center for Antibiotic Discovery, Michael G. DeGroote Institute for Infectious Disease Research, Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Dirk Hackenberger
- David Braley Center for Antibiotic Discovery, Michael G. DeGroote Institute for Infectious Disease Research, Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Gerard D Wright
- David Braley Center for Antibiotic Discovery, Michael G. DeGroote Institute for Infectious Disease Research, Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada.
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Bordeleau E, Stogios PJ, Evdokimova E, Koteva K, Savchenko A, Wright GD. Mechanistic plasticity in ApmA enables aminoglycoside promiscuity for resistance. Nat Chem Biol 2024; 20:234-242. [PMID: 37973888 DOI: 10.1038/s41589-023-01483-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 10/12/2023] [Indexed: 11/19/2023]
Abstract
The efficacy of aminoglycoside antibiotics is waning due to the acquisition of diverse resistance mechanisms by bacteria. Among the most prevalent are aminoglycoside acetyltransferases (AACs) that inactivate the antibiotics through acetyl coenzyme A-mediated modification. Most AACs are members of the GCN5 superfamily of acyltransferases which lack conserved active site residues that participate in catalysis. ApmA is the first reported AAC belonging to the left-handed β-helix superfamily. These enzymes are characterized by an essential active site histidine that acts as an active site base. Here we show that ApmA confers broad-spectrum aminoglycoside resistance with a molecular mechanism that diverges from other detoxifying left-handed β-helix superfamily enzymes and canonical GCN5 AACs. We find that the active site histidine plays different functions depending on the acetyl-accepting aminoglycoside substrate. This flexibility in the mechanism of a single enzyme underscores the plasticity of antibiotic resistance elements to co-opt protein catalysts in the evolution of drug detoxification.
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Affiliation(s)
- Emily Bordeleau
- David Braley Centre for Antibiotics Discovery, M.G. DeGroote Institute for Infectious Disease Research, Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Peter J Stogios
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, Canada
| | - Elena Evdokimova
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, Canada
| | - Kalinka Koteva
- David Braley Centre for Antibiotics Discovery, M.G. DeGroote Institute for Infectious Disease Research, Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Alexei Savchenko
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, Canada
- Center for Structural Genomics of Infectious Diseases (CSGID) University of Calgary, Calgary, Alberta, Canada
- Department of Microbiology, Immunology and Infectious Diseases, University of Calgary, Calgary, Alberta, Canada
| | - Gerard D Wright
- David Braley Centre for Antibiotics Discovery, M.G. DeGroote Institute for Infectious Disease Research, Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada.
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Uruén C, Gimeno J, Sanz M, Fraile L, Marín CM, Arenas J. Invasive Streptococcus suis isolated in Spain contain a highly promiscuous and dynamic resistome. Front Cell Infect Microbiol 2024; 13:1329632. [PMID: 38317790 PMCID: PMC10839070 DOI: 10.3389/fcimb.2023.1329632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Accepted: 12/26/2023] [Indexed: 02/07/2024] Open
Abstract
Introduction Streptococcus suis is a major pathogen for swine and human. Here we aimed to know the rates of antimicrobial resistance (AMR) in invasive S. suis isolates recovered along Spain between 2016 - 2021 and elucidate their genetic origin. Methods Antibiotic susceptibility testing was performed for 116 isolates of different genetic backgrounds and geographic origins against 18 antibiotics of 9 families. The association between AMR and genotypes and the origin of the isolates were statistically analyzed using Pearson´s chi-square test and the likelihood ratio. The antimicrobial resistant genes were identified by whole genome sequencing analysis and PCR screenings. Results High AMR rates (>80%) were detected for tetracyclines, spectinomycin, lincosamides, and marbofloxacin, medium (20-40%) for sulphonamides/trimethoprim, tiamulin, penicillin G, and enrofloxacin, and low (< 20%) for florfenicol, and four additional β-lactams. The occurrence of multidrug resistance was observed in 90% of isolates. For certain antibiotics (penicillin G, enrofloxacin, marbofloxacin, tilmicosin, and erythromycin), AMR was significantly associated with particular sequence types (STs), geographic regions, age of pigs, and time course. Whole genome sequencing comparisons and PCR screenings identified 23 AMR genes, of which 19 were previously reported in S. suis (aph(3')-IIIa, sat4, aadE, spw, aac(6')-Ie-aph(2'')-Ia, fexA, optrA, erm(B), mef(A/E), mrs(D), mph(C), lnu(B), lsa(E), vga(F), tet(M), tet(O), tet(O/W/32/O), tet(W)), and 4 were novel (aph(2'')-IIIa, apmA, erm(47), tet(T)). These AMR genes explained the AMR to spectinomycin, macrolides, lincosamides, tiamulin, and tetracyclines. Several genes were located on mobile genetic elements which showed a variable organization and composition. As AMR gene homologs were identified in many human and animal pathogens, the resistome of S. suis has a different phylogenetic origin. Moreover, AMR to penicillin G, fluoroquinolones, and trimethoprim related to mutations in genes coding for target enzymes (pbp1a, pbp2b, pbp2x, mraY, gyrA, parC, and dhfr). Bioinformatic analysis estimated traits of recombination on target genes, also indicative of gene transfer events. Conclusions Our work evidences that S. suis is a major contributor to AMR dissemination across veterinary and human pathogens. Therefore, control of AMR in S. suis should be considered from a One Health approach in regions with high pig production to properly tackle the issue of antimicrobial drug resistance.
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Affiliation(s)
- Cristina Uruén
- Unit of Microbiology and Immunology, Faculty of Veterinary, University of Zaragoza, Zaragoza, Spain
- Institute Agrofood of Aragón-IA2, University of Zaragoza-CITA, Zaragoza, Spain
| | - Jorge Gimeno
- Unit of Microbiology and Immunology, Faculty of Veterinary, University of Zaragoza, Zaragoza, Spain
- Institute Agrofood of Aragón-IA2, University of Zaragoza-CITA, Zaragoza, Spain
| | - Marina Sanz
- Unit of Microbiology and Immunology, Faculty of Veterinary, University of Zaragoza, Zaragoza, Spain
- Institute Agrofood of Aragón-IA2, University of Zaragoza-CITA, Zaragoza, Spain
| | - Lorenzo Fraile
- Department of Animal Science, ETSEA, University of Lleida-Agrotecno, Lleida, Spain
| | - Clara M. Marín
- Institute Agrofood of Aragón-IA2, University of Zaragoza-CITA, Zaragoza, Spain
- Department of Animal Production and Health, CITA, Zaragoza, Spain
| | - Jesús Arenas
- Unit of Microbiology and Immunology, Faculty of Veterinary, University of Zaragoza, Zaragoza, Spain
- Institute Agrofood of Aragón-IA2, University of Zaragoza-CITA, Zaragoza, Spain
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Xiao G, Li J, Sun Z. The Combination of Antibiotic and Non-Antibiotic Compounds Improves Antibiotic Efficacy against Multidrug-Resistant Bacteria. Int J Mol Sci 2023; 24:15493. [PMID: 37895172 PMCID: PMC10607837 DOI: 10.3390/ijms242015493] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 10/19/2023] [Accepted: 10/21/2023] [Indexed: 10/29/2023] Open
Abstract
Bacterial antibiotic resistance, especially the emergence of multidrug-resistant (MDR) strains, urgently requires the development of effective treatment strategies. It is always of interest to delve into the mechanisms of resistance to current antibiotics and target them to promote the efficacy of existing antibiotics. In recent years, non-antibiotic compounds have played an important auxiliary role in improving the efficacy of antibiotics and promoting the treatment of drug-resistant bacteria. The combination of non-antibiotic compounds with antibiotics is considered a promising strategy against MDR bacteria. In this review, we first briefly summarize the main resistance mechanisms of current antibiotics. In addition, we propose several strategies to enhance antibiotic action based on resistance mechanisms. Then, the research progress of non-antibiotic compounds that can promote antibiotic-resistant bacteria through different mechanisms in recent years is also summarized. Finally, the development prospects and challenges of these non-antibiotic compounds in combination with antibiotics are discussed.
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Affiliation(s)
| | | | - Zhiliang Sun
- College of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, China; (G.X.); (J.L.)
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Fan PH, Sato S, Yeh YC, Liu HW. Biosynthetic Origin of the Octose Core and Its Mechanism of Assembly during Apramycin Biosynthesis. J Am Chem Soc 2023; 145:21361-21369. [PMID: 37733880 PMCID: PMC10591738 DOI: 10.1021/jacs.3c06354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/23/2023]
Abstract
Apramycin is an aminoglycoside antibiotic isolated from Streptoalloteichus tenebrarius and S. hindustanus that has found clinical use in veterinary medicine. The apramycin structure is notable for its atypical eight-carbon bicyclic dialdose (octose) moiety. While the apramycin biosynthetic gene cluster (apr) has been identified and several of the encoded genes functionally characterized, how the octose core itself is assembled has remained elusive. Nevertheless, recent gene deletion studies have hinted at an N-acetyl aminosugar being a key precursor to the octose, and this hypothesis is consistent with the additional feeding experiments described in the present report. Moreover, bioinformatic analysis indicates that AprG may be structurally similar to GlcNAc-2-epimerase and hence recognize GlcNAc or a structurally similar substrate suggesting a potential role in octose formation. AprG with an extended N-terminal sequence was therefore expressed, purified, and assayed in vitro demonstrating that it does indeed catalyze a transaldolation reaction between GlcNAc or GalNAc and 6'-oxo-lividamine to afford 7'-N-acetyldemethylaprosamine with the same 6'-R and 7'-S stereochemistry as those observed in the apramycin product. Biosynthesis of the octose core in apramycin thus proceeds in the [6 + 2] manner with GlcNAc or GalNAc as the two-carbon donor, which has not been previously reported for biological octose formation, as well as novel inverting stereochemistry of the transferred fragment. Consequently, AprG appears to be a new transaldolase that lacks any apparent sequence similarity to the currently known aldolases and catalyzes a transaldolation for which there is no established biological precedent.
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Affiliation(s)
- Po-Hsun Fan
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Shusuke Sato
- Division of Chemical Biology and Medicinal Chemistry, College of Pharmacy, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Yu-Cheng Yeh
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Hung-Wen Liu
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
- Division of Chemical Biology and Medicinal Chemistry, College of Pharmacy, The University of Texas at Austin, Austin, Texas 78712, United States
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Morshdy AEMA, Abdallah KME, Abdallah HE, Algahtani FD, Elabbasy MT, Atique S, Ahmad K, Al-Najjar MAA, Abdallah HM, Mahmoud AFA. Potential of Natural Phenolic Compounds as Antimicrobial Agents against Multidrug-Resistant Staphylococcus aureus in Chicken Meat. Molecules 2023; 28:6742. [PMID: 37764518 PMCID: PMC10535414 DOI: 10.3390/molecules28186742] [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: 08/09/2023] [Revised: 09/08/2023] [Accepted: 09/14/2023] [Indexed: 09/29/2023] Open
Abstract
Staphylococcus aureus is one of the most widespread foodborne bacteria that cause high morbidity, mortality, and economic loss, primarily if foodborne diseases are caused by pathogenic and multidrug-resistant (MDR) strains. This study aimed to determine the prevalence of S. aureus in chicken meat in Egyptian markets. Thus, this study might be the first to assess the efficiency of different natural phenolic compounds as novel antibacterial agents against MDR S. aureus pathogens isolated from raw chicken meat in the Egyptian market. The incidence and quantification of pathogenic S. aureus were detected in retail raw chicken meat parts (breast, thigh, fillet, and giblets). In total, 73 out of 80 (91.3%) of the chicken meat parts were contaminated, with S. aureus as the only species isolated. Of the 192 identified S. aureus isolates, 143 were coagulase-positive S. aureus and 117 isolates were MDR (81.8%, 117/143). Twenty-two antibiotic resistance profile patterns were detected. One strain was randomly selected from each pattern to further analyze virulence and resistance genes. Extracted DNA was assessed for the presence of antibiotic-resistance genes, i.e., vancomycin-resistance (vanA), aminoglycosides-resistance (aacA-aphD), apramycin-resistance (apmA), and methicillin-resistance (mecA), penicillin-resistance (blaZ), and virulence genes staphylococcal enterotoxins (sea and seb), Panton-Valentine leucocidin (pvl), clumping factor A (clfA), and toxic shock syndrome toxin (tst). Clustering analyses revealed that six S. aureus strains harbored the most virulence and resistance genes. The activity of hydroquinone was significantly higher than thymol, carvacrol, eugenol, and protocatechuic acid. Therefore, phenolic compounds, particularly hydroquinone, could potentially alternate with conventional antibiotics against the pathogenic MDR S. aureus inhabiting raw chicken meat. Hence, this study indicates that urgent interventions are necessary to improve hygiene for safer meat in Egyptian markets. Moreover, hydroquinone could be a natural phenolic compound for inhibiting foodborne pathogens.
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Affiliation(s)
- Alaa Eldin M. A. Morshdy
- Food Hygiene, Safety, and Technology Department, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44519, Egypt; (A.E.M.A.M.); (H.E.A.)
| | - Karima M. E. Abdallah
- Food Hygiene, Safety, and Technology Department, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44519, Egypt; (A.E.M.A.M.); (H.E.A.)
| | - Heba E. Abdallah
- Food Hygiene, Safety, and Technology Department, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44519, Egypt; (A.E.M.A.M.); (H.E.A.)
| | - Fahad D. Algahtani
- Department of Public Health, College of Public Health and Health Informatics, University of Hail, Ha’il 81451, Saudi Arabia
| | | | - Suleman Atique
- Department of Public Health Science, Faculty of Landscape and Society, Norwegian University of Life Sciences, 1430 Ås, Norway
| | - Khursheed Ahmad
- Department of Biotechnology, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | | | - Hossam M. Abdallah
- Department of Microbiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44519, Egypt;
| | - Abdallah Fikry A. Mahmoud
- Food Hygiene, Safety, and Technology Department, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44519, Egypt; (A.E.M.A.M.); (H.E.A.)
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Pang AH, Green KD, Tsodikov OV, Garneau-Tsodikova S. Discovery and development of inhibitors of acetyltransferase Eis to combat Mycobacterium tuberculosis. Methods Enzymol 2023; 690:369-396. [PMID: 37858535 PMCID: PMC10949404 DOI: 10.1016/bs.mie.2023.06.017] [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: 10/21/2023]
Abstract
Aminoglycosides are bactericidal antibiotics with a broad spectrum of activity, used to treat infections caused mostly by Gram-negative pathogens and as a second-line therapy against tuberculosis. A common resistance mechanism to aminoglycosides is bacterial aminoglycoside acetyltransferase enzymes (AACs), which render aminoglycosides inactive by acetylating their amino groups. In Mycobacterium tuberculosis, an AAC called Eis (enhanced intracellular survival) acetylates kanamycin and amikacin. When upregulated as a result of mutations, Eis causes clinically important aminoglycoside resistance; therefore, Eis inhibitors are attractive as potential aminoglycoside adjuvants for treatment of aminoglycoside-resistant tuberculosis. For over a decade, we have studied Eis and discovered several series of Eis inhibitors. Here, we provide a detailed protocol for a colorimetric assay used for high-throughput discovery of Eis inhibitors, their characterization, and testing their selectivity. We describe protocols for in vitro cell culture assays for testing aminoglycoside adjuvant properties of the inhibitors. A procedure for obtaining crystals of Eis-inhibitor complexes and determining their structures is also presented. Finally, we discuss applicability of these methods to discovery and testing of inhibitors of other AACs.
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Affiliation(s)
- Allan H Pang
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY, United States
| | - Keith D Green
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY, United States
| | - Oleg V Tsodikov
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY, United States.
| | - Sylvie Garneau-Tsodikova
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY, United States.
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Darby EM, Trampari E, Siasat P, Gaya MS, Alav I, Webber MA, Blair JMA. Molecular mechanisms of antibiotic resistance revisited. Nat Rev Microbiol 2023; 21:280-295. [PMID: 36411397 DOI: 10.1038/s41579-022-00820-y] [Citation(s) in RCA: 234] [Impact Index Per Article: 234.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/17/2022] [Indexed: 11/22/2022]
Abstract
Antibiotic resistance is a global health emergency, with resistance detected to all antibiotics currently in clinical use and only a few novel drugs in the pipeline. Understanding the molecular mechanisms that bacteria use to resist the action of antimicrobials is critical to recognize global patterns of resistance and to improve the use of current drugs, as well as for the design of new drugs less susceptible to resistance development and novel strategies to combat resistance. In this Review, we explore recent advances in understanding how resistance genes contribute to the biology of the host, new structural details of relevant molecular events underpinning resistance, the identification of new resistance gene families and the interactions between different resistance mechanisms. Finally, we discuss how we can use this information to develop the next generation of antimicrobial therapies.
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Affiliation(s)
- Elizabeth M Darby
- College of Medical and Dental Sciences, Institute of Microbiology and Infection, University of Birmingham, Birmingham, UK
| | | | - Pauline Siasat
- College of Medical and Dental Sciences, Institute of Microbiology and Infection, University of Birmingham, Birmingham, UK
| | | | - Ilyas Alav
- College of Medical and Dental Sciences, Institute of Microbiology and Infection, University of Birmingham, Birmingham, UK
| | - Mark A Webber
- Quadram Institute Bioscience, Norwich Research Park, Norwich, UK.
- Medical School, University of East Anglia, Norwich Research Park, Norwich, UK.
| | - Jessica M A Blair
- College of Medical and Dental Sciences, Institute of Microbiology and Infection, University of Birmingham, Birmingham, UK.
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Caméléna F, Liberge M, Rezzoug I, Merimèche M, Naas T, Berçot B. In vitro activity of apramycin against 16S-RMTase-producing Gram-negative isolates. J Glob Antimicrob Resist 2023; 33:21-25. [PMID: 36822368 DOI: 10.1016/j.jgar.2023.02.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 01/10/2023] [Accepted: 02/02/2023] [Indexed: 02/25/2023] Open
Abstract
OBJECTIVES Apramycin is an aminoglycoside (AG) with a unique structure that is little affected by plasmid-mediated mechanisms of AG resistance, including most AG-modifying enzymes and 16S rRNA methyltransferases (16S-RMTases). We evaluate the activity of apramycin against a collection of 16S-RMTase-producing isolates, including Enterobacterales, non-fermenting bacteria, and carbapenemase producers. METHODS In total, 164 non-duplicate 16S-RMTase-producing isolates, including 84 Enterobacterales, 53 Acinetobacter baumannii and 27 Pseudomonas aeruginosa isolates, were included in the study. Whole-genome sequencing (WGS) was performed on all isolates with Illumina technology. The minimum inhibitory concentration (MIC) of apramycin was determined by broth microdilution with customized Sensititre plates (Thermo Fisher Scientific, Dardilly, France). RESULTS We found that 95% (156/164) of the 16S-RMTase-producing isolates were susceptible to apramycin, with a MIC50 of 4 mg/L and a MIC90 of 16 mg/L, respectively. Resistance rates were higher in P. aeruginosa (11%) than in A. baumannii (4%) or Enterobacterales (4%) (P < 0.0001 for each comparison). Eight isolates were resistant to apramycin, including one isolate with an MIC >64 mg/L due to the acquisition of the aac(3)-IV gene. The genetic environment of the aac(3)-IV gene was similar to that in the pAH01-4 plasmid of an Escherichia coli isolate from chicken in China. CONCLUSION Resistance to apramycin remains rare in 16S-RMTase-producing isolates. Apramycin may, therefore, be an interesting alternative treatment for infections caused by 16S-RMTase and carbapenemase producers.
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Affiliation(s)
- François Caméléna
- Department of Bacteriology, Saint-Louis-Lariboisière Hospital Group, Assistance Publique-Hôpitaux de Paris, Paris, France; Université de Paris Cité, INSERM 1137, IAME, Paris, France
| | - Mathilde Liberge
- Department of Bacteriology, Saint-Louis-Lariboisière Hospital Group, Assistance Publique-Hôpitaux de Paris, Paris, France; Université de Paris Cité, INSERM 1137, IAME, Paris, France
| | - Inès Rezzoug
- Department of Bacteriology, Saint-Louis-Lariboisière Hospital Group, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Manel Merimèche
- Department of Bacteriology, Saint-Louis-Lariboisière Hospital Group, Assistance Publique-Hôpitaux de Paris, Paris, France; Université de Paris Cité, INSERM 1137, IAME, Paris, France
| | - Thierry Naas
- Department of Bacteriology-Hygiene, Bicêtre Hospital, Assistance Publique - Hôpitaux de Paris, Le Kremlin-Bicêtre, France; Université de Paris-Saclay, INSERM 1184, RESIST Unit, Le Kremlin-Bicêtre, France; French National Reference Centre for Antimicrobial Resistance, Le Kremlin-Bicêtre, France
| | - Béatrice Berçot
- Department of Bacteriology, Saint-Louis-Lariboisière Hospital Group, Assistance Publique-Hôpitaux de Paris, Paris, France; Université de Paris Cité, INSERM 1137, IAME, Paris, France.
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Tevyashova AN, Shapovalova KS. Potential for the Development of a New Generation of Aminoglycoside Antibiotics. Pharm Chem J 2022; 55:860-875. [PMID: 35039693 PMCID: PMC8754558 DOI: 10.1007/s11094-021-02510-0] [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: 07/11/2021] [Indexed: 11/29/2022]
Abstract
The present review summarizes recent publications devoted to aminoglycosides that study the main types of resistance to antibiotics of this class and the main directions of chemical modification aimed at overcoming the resistance or changing the spectrum of biological activity. Conjugates of aminoglycosides with various pharmacophores including amino acids, peptides, peptide nucleic acids, nucleic bases, and several other biologically active molecules and modifications resulting in other types of biological activity of this class of antibiotics are described. It is concluded that a promising research direction aimed at increasing the activity of antibiotics against resistant strains is the search for selective inhibitors of aminoglycoside-modifying enzymes. This would allow renewal of the use of antibiotics already meeting widespread resistance and would increase the potential of a new generation of antibiotics.
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Affiliation(s)
- A. N. Tevyashova
- G. F. Gause Institute of New Antibiotics, 11/1 B. Pirogovskaya St, Moscow, 119021 Russia
| | - K. S. Shapovalova
- G. F. Gause Institute of New Antibiotics, 11/1 B. Pirogovskaya St, Moscow, 119021 Russia
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11
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Zhang Q, He C, Sun J, Deng Z, Yu Y. N-7′ methylation in apramycin: its biosynthesis and biological role. Org Chem Front 2022. [DOI: 10.1039/d2qo00260d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work characterized N-7′ methylation in apramycin's assembly line, which fills in the final step at the pseudotrisaccharide stage of the apramycin biosynthetic pathway and indicates the significant biological role of the N-7′ methyl group.
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Affiliation(s)
- Qian Zhang
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Hubei Clinical Center and Key Laboratory of Intestinal and Colorectal Disease, School of Pharmaceutical Sciences, Wuhan University, 185 East Lake Road, Wuhan 430071, P. R. China
| | - Chang He
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Hubei Clinical Center and Key Laboratory of Intestinal and Colorectal Disease, School of Pharmaceutical Sciences, Wuhan University, 185 East Lake Road, Wuhan 430071, P. R. China
| | - Jing Sun
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Hubei Clinical Center and Key Laboratory of Intestinal and Colorectal Disease, School of Pharmaceutical Sciences, Wuhan University, 185 East Lake Road, Wuhan 430071, P. R. China
| | - Zixin Deng
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Hubei Clinical Center and Key Laboratory of Intestinal and Colorectal Disease, School of Pharmaceutical Sciences, Wuhan University, 185 East Lake Road, Wuhan 430071, P. R. China
| | - Yi Yu
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Hubei Clinical Center and Key Laboratory of Intestinal and Colorectal Disease, School of Pharmaceutical Sciences, Wuhan University, 185 East Lake Road, Wuhan 430071, P. R. China
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12
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Hao M, Schuyler J, Zhang H, Shashkina E, Du H, Fouts DE, Satlin M, Kreiswirth BN, Chen L. Apramycin resistance in epidemic carbapenem-resistant Klebsiella pneumoniae ST258 strains. J Antimicrob Chemother 2021; 76:2017-2023. [PMID: 33942093 DOI: 10.1093/jac/dkab131] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 03/31/2021] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Recent studies indicated that the monosubstituted deoxystreptamine aminoglycoside apramycin is a potent antibiotic against a wide range of MDR Gram-negative pathogens. OBJECTIVES To evaluate the in vitro activity of apramycin against carbapenem-resistant Klebsiella pneumoniae (CRKp) isolates from New York and New Jersey, and to explore mechanisms of apramycin resistance. METHODS Apramycin MICs were determined by broth microdilution for 155 CRKp bloodstream isolates collected from 2013 to 2018. MLST STs, wzi capsular types and apramycin resistance gene aac(3')-IV were examined by PCR and Sanger sequencing. Selected isolates were further characterized by conjugation experiments and WGS. RESULTS Apramycin MIC50/90 values were 8 and >128 mg/L for CRKp isolates, which are much higher than previously reported. Twenty-four isolates (15.5%) were apramycin resistant (MIC ≥64 mg/L) and they were all from the K. pneumoniae ST258 background. The 24 apramycin-resistant K. pneumoniae ST258 strains belonged to six different capsular types and 91.7% of them harboured the apramycin resistance gene aac(3')-IV. Sequencing analysis showed that different ST258 capsular type strains shared a common non-conjugative IncR plasmid, co-harbouring aac(3')-IV and blaKPC. A novel IncR and IncX3 cointegrate plasmid, p59494-RX116.1, was also identified in an ST258 strain, demonstrating how apramycin resistance can be spread from a non-conjugative plasmid through cointegration. CONCLUSIONS We described a high apramycin resistance rate in clinical CRKp isolates in the New York/New Jersey region, mainly among the epidemic K. pneumoniae ST258 strains. The high resistance rate in an epidemic K. pneumoniae clone raises concern regarding the further optimization and development of apramycin and apramycin-like antibiotics.
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Affiliation(s)
- Mingju Hao
- Department of Clinical Laboratory Medicine, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Shandong Medicine and Health Key Laboratory of Laboratory Medicine, Jinan, Shandong, China
| | - Jessica Schuyler
- School of Graduate Studies, Rutgers University, Newark, NJ, USA.,Center for Discovery and Innovation, Hackensack-Meridian Health, Nutley, NJ, USA
| | - Haifang Zhang
- Department of Clinical Laboratory, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Elena Shashkina
- Center for Discovery and Innovation, Hackensack-Meridian Health, Nutley, NJ, USA
| | - Hong Du
- Department of Clinical Laboratory, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | | | - Michael Satlin
- Division of Infectious Diseases, Department of Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Barry N Kreiswirth
- Center for Discovery and Innovation, Hackensack-Meridian Health, Nutley, NJ, USA
| | - Liang Chen
- Center for Discovery and Innovation, Hackensack-Meridian Health, Nutley, NJ, USA.,Department of Medical Sciences, Hackensack Meridian School of Medicine, Nutley, NJ, USA
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Karaiskos I, Galani I, Papoutsaki V, Galani L, Giamarellou H. Carbapenemase producing Klebsiella pneumoniae: implication on future therapeutic strategies. Expert Rev Anti Infect Ther 2021; 20:53-69. [PMID: 34033499 DOI: 10.1080/14787210.2021.1935237] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Introduction: The emergence of carbapenemase resistant Gram-negative is designated as an 'urgent' priority of public health. Carbapenemase producing Klebsiella pneumoniae (CPKP) is linked with significant mortality. Conventionally used antibiotics (polymyxins, tigecycline, aminoglycosides, etc.) are associated with poor efficacy and toxicity profiles are quite worrisome.Areas covered: This article reviews mechanism of resistance and evidence regarding novel treatments of infections caused by CPKP, focusing mainly on currently approved new therapies and implications on future therapeutic strategies. A review of novel β-lactam/β-lactamase inhibitors (BLI) recently approved and in clinical development as well as cefiderocol, eravacycline and apramycin are discussed.Expert opinion: Newly approved and forthcoming antimicrobial agents are promising to combat infections caused by CPKP. Ceftazidime-avibactam, meropenem-vaborbactam, and imipenem-cilastatin-relebactam are novel agents with favorable outcome and associated with improved mortality in KPC-producing K. pneumoniae infections. However, are inactive against metallo-β-lactamases (MBL). Novel BLI in later stage of development, i.e. aztreonam-avibactam, cefepime-zidebactam, cefepime-taniborbactam, and meropenem-nacubactam as well as cefiderocol are active in vitro against both KPC and MBL. Potential expectations of future therapeutic strategies are improved potency against CPKP, more tolerable safety profile, and capability of overcoming current resistance mechanism of multidrug-resistant K. pneumoniae.
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Affiliation(s)
- Ilias Karaiskos
- 1st Department of Internal Medicine - Infectious Diseases, Hygeia General Hospital, Athens, Greece
| | - Irene Galani
- 4th Department of Internal Medicine, University General Hospital ATTIKON, National and Kapodistrian University of Athens, Faculty of Medicine, Infectious Diseases Laboratory, Athens, Greece
| | | | - Lamprini Galani
- 1 Department of Internal Medicine - Infectious Diseases, Hygeia General Hospital, Athens, Greece
| | - Helen Giamarellou
- 1 Department of Internal Medicine - Infectious Diseases, Hygeia General Hospital, Athens, Greece
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