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Kulshrestha S, Redhu R, Dua R, Gupta R, Gupta P, Gupta S, Narad P, Sengupta A. 16S rRNA female reproductive microbiome investigation reveals Dalfopristin, Clorgyline, and Hydrazine as potential therapeutics for the treatment of bacterial vaginosis. Diagn Microbiol Infect Dis 2024; 109:116349. [PMID: 38744093 DOI: 10.1016/j.diagmicrobio.2024.116349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 05/09/2024] [Accepted: 05/09/2024] [Indexed: 05/16/2024]
Abstract
Bacterial vaginosis (BV) is a prevalent vaginal illness resulting from a disruption in the vaginal microbial equilibrium. The vaginal microbiota has been shown to have a substantial impact on the development and continuation of BV. This work utilized 16S rRNA sequence analysis of vaginal microbiome samples (Control vs BV samples) utilizing Parallel-Meta 3 to investigate the variations in microbial composition. The unique genes identified were used to determine prospective therapeutic targets and their corresponding inhibitory ligands. Further, molecular docking was conducted and then MD simulations were carried out to confirm the docking outcomes. In the BV samples, we detected several anaerobic bacteria recognized for their ability to generate biofilms, namely Acetohalobium, Anaerolineaceae, Desulfobacteraceae, and others. Furthermore, we identified Dalfopristin, Clorgyline, and Hydrazine as potential therapeutic options for the management of BV. This research provides new insights into the causes of BV and shows the potential effectiveness of novel pharmacological treatments.
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Affiliation(s)
- Sudeepti Kulshrestha
- Systems Biology and Data Analytics Research Lab, Centre for Computational Biology and Bioinformatics, Amity Institute of Biotechnology, Amity University Uttar Pradesh, Noida, India
| | - Ritu Redhu
- Systems Biology and Data Analytics Research Lab, Centre for Computational Biology and Bioinformatics, Amity Institute of Biotechnology, Amity University Uttar Pradesh, Noida, India
| | - Riya Dua
- Systems Biology and Data Analytics Research Lab, Centre for Computational Biology and Bioinformatics, Amity Institute of Biotechnology, Amity University Uttar Pradesh, Noida, India
| | - Romasha Gupta
- CSIR Institute of Genomics & Integrative Biology, New Delhi, India
| | - Payal Gupta
- Systems Biology and Data Analytics Research Lab, Centre for Computational Biology and Bioinformatics, Amity Institute of Biotechnology, Amity University Uttar Pradesh, Noida, India
| | - Somesh Gupta
- Department of Dermatology & Venereology, All India Institute of Medical Sciences, New Delhi, India
| | - Priyanka Narad
- Division of Biomedical Informatics (BMI), Indian Council of Medical Research, Ansari Nagar, New Delhi, India
| | - Abhishek Sengupta
- Systems Biology and Data Analytics Research Lab, Centre for Computational Biology and Bioinformatics, Amity Institute of Biotechnology, Amity University Uttar Pradesh, Noida, India.
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Bian X, Qu X, Zhang J, Nang SC, Bergen PJ, Tony Zhou Q, Chan HK, Feng M, Li J. Pharmacokinetics and pharmacodynamics of peptide antibiotics. Adv Drug Deliv Rev 2022; 183:114171. [PMID: 35189264 PMCID: PMC10019944 DOI: 10.1016/j.addr.2022.114171] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 01/23/2022] [Accepted: 02/16/2022] [Indexed: 01/05/2023]
Abstract
Antimicrobial resistance is a major global health challenge. As few new efficacious antibiotics will become available in the near future, peptide antibiotics continue to be major therapeutic options for treating infections caused by multidrug-resistant pathogens. Rational use of antibiotics requires optimisation of the pharmacokinetics and pharmacodynamics for the treatment of different types of infections. Toxicodynamics must also be considered to improve the safety of antibiotic use and, where appropriate, to guide therapeutic drug monitoring. This review focuses on the pharmacokinetics/pharmacodynamics/toxicodynamics of peptide antibiotics against multidrug-resistant Gram-negative and Gram-positive pathogens. Optimising antibiotic exposure at the infection site is essential for improving their efficacy and minimising emergence of resistance.
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Affiliation(s)
- Xingchen Bian
- Institute of Antibiotics, Huashan Hospital, Fudan University, Shanghai, China; Key Laboratory of Clinical Pharmacology of Antibiotics, Shanghai, China; National Health Commission & National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China; School of Pharmacy, Fudan University, Shanghai, China
| | - Xingyi Qu
- Institute of Antibiotics, Huashan Hospital, Fudan University, Shanghai, China; Key Laboratory of Clinical Pharmacology of Antibiotics, Shanghai, China; National Health Commission & National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China; School of Pharmacy, Fudan University, Shanghai, China; Phase I Unit, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Jing Zhang
- Institute of Antibiotics, Huashan Hospital, Fudan University, Shanghai, China; Key Laboratory of Clinical Pharmacology of Antibiotics, Shanghai, China; National Health Commission & National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China; Phase I Unit, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Sue C Nang
- Biomedicine Discovery Institute and Department of Microbiology, Monash University, Melbourne, Australia
| | - Phillip J Bergen
- Biomedicine Discovery Institute and Department of Microbiology, Monash University, Melbourne, Australia
| | - Qi Tony Zhou
- Department of Industrial and Physical Pharmacy, College of Pharmacy, Purdue University, West Lafayette, IN, USA
| | - Hak-Kim Chan
- Advanced Drug Delivery Group, School of Pharmacy, Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia
| | - Meiqing Feng
- School of Pharmacy, Fudan University, Shanghai, China
| | - Jian Li
- Biomedicine Discovery Institute and Department of Microbiology, Monash University, Melbourne, Australia.
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Khameneh B, Diab R, Ghazvini K, Fazly Bazzaz BS. Breakthroughs in bacterial resistance mechanisms and the potential ways to combat them. Microb Pathog 2016; 95:32-42. [DOI: 10.1016/j.micpath.2016.02.009] [Citation(s) in RCA: 114] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2015] [Revised: 02/07/2016] [Accepted: 02/17/2016] [Indexed: 12/17/2022]
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Pinheiro L, Brito CI, Pereira VC, Oliveira A, Bartolomeu AR, Camargo CH, Cunha MLRS. Susceptibility Profile of Staphylococcus epidermidis and Staphylococcus haemolyticus Isolated from Blood Cultures to Vancomycin and Novel Antimicrobial Drugs over a Period of 12 Years. Microb Drug Resist 2015; 22:283-93. [PMID: 26623676 DOI: 10.1089/mdr.2015.0064] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The aim of this study was to evaluate the antimicrobial susceptibility profile of 85 Staphylococcus epidermidis and 84 Staphylococcus haemolyticus strains isolated from blood cultures to oxacillin, vancomycin, tigecycline, linezolid, daptomycin, and quinupristin/dalfopristin over a period of 12 years. S. epidermidis and S. haemolyticus isolated from blood cultures of inpatients, attended at a teaching hospital, were analyzed for the presence of the mecA gene and by SCCmec typing. The minimum inhibitory concentration (MIC) values of tigecycline, linezolid, daptomycin, quinupristin/dalfopristin, and vancomycin were determined. Isolates exhibiting vancomycin MICs of ≥2 μg/ml were typed by pulsed-field gel electrophoresis (PFGE). The rate of mecA positivity was 92.9% and 100% in S. epidermidis and S. haemolyticus, respectively. The most frequent SCCmec types were type III (53.2%) in S. epidermidis and type I (32.1%) in S. haemolyticus. All isolates were susceptible to linezolid and daptomycin, but 7.1% of S. haemolyticus and 2.3% of S. epidermidis isolates were resistant to tigecycline, and 1.2% each of S. haemolyticus and S. epidermidis were resistant and intermediately resistant to quinupristin/dalfopristin, respectively. S. epidermidis exhibited higher vancomycin MICs (40% with MIC of ≥2 μg/ml). Clonal typing of strains with vancomycin MIC of ≥2 μg/ml revealed the presence of different PFGE types of S. epidermidis and S. haemolyticus over a period of up to 4 years (2002-2004, 2005-2008, 2006-2009, 2010-2011). Despite the observation of a high prevalence of mecA, the clinical strains were fully susceptible to vancomycin and to the new drugs linezolid, daptomycin, tigecycline, and quinupristin/dalfopristin. The PFGE types with vancomycin MIC of ≥2 μg/ml exhibited a great diversity of SCCmec cassettes, demonstrating that S. epidermidis and S. haemolyticus may easily acquire these resistance-conferring genetic elements.
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Affiliation(s)
- Luiza Pinheiro
- 1 Departamento de Microbiologia e Imunologia, Instituto de Biociências, Universidade Estadual Paulista (UNESP) , Botucatu, São Paulo, Brazil
| | - Carla Ivo Brito
- 1 Departamento de Microbiologia e Imunologia, Instituto de Biociências, Universidade Estadual Paulista (UNESP) , Botucatu, São Paulo, Brazil
| | - Valéria Cataneli Pereira
- 1 Departamento de Microbiologia e Imunologia, Instituto de Biociências, Universidade Estadual Paulista (UNESP) , Botucatu, São Paulo, Brazil
| | - Adilson Oliveira
- 1 Departamento de Microbiologia e Imunologia, Instituto de Biociências, Universidade Estadual Paulista (UNESP) , Botucatu, São Paulo, Brazil
| | - Ariane Rocha Bartolomeu
- 1 Departamento de Microbiologia e Imunologia, Instituto de Biociências, Universidade Estadual Paulista (UNESP) , Botucatu, São Paulo, Brazil
| | - Carlos Henrique Camargo
- 1 Departamento de Microbiologia e Imunologia, Instituto de Biociências, Universidade Estadual Paulista (UNESP) , Botucatu, São Paulo, Brazil .,2 Núcleo de Doenças Entéricas e Infecções por Patógenos Especiais, Centro de Bacteriologia, Instituto Adolfo Lutz , São Paulo, São Paulo, Brazil
| | - Maria Lourdes Ribeiro Souza Cunha
- 1 Departamento de Microbiologia e Imunologia, Instituto de Biociências, Universidade Estadual Paulista (UNESP) , Botucatu, São Paulo, Brazil
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Ma J, Tong Z, Ling J, Liu H, Wei X. The effects of sodium hypochlorite and chlorhexidine irrigants on the antibacterial activities of alkaline media against Enterococcus faecalis. Arch Oral Biol 2015; 60:1075-81. [DOI: 10.1016/j.archoralbio.2015.04.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Revised: 04/16/2015] [Accepted: 04/19/2015] [Indexed: 10/23/2022]
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Antimicrobial therapy in infectious complications of diabetic foot. ROMANIAN JOURNAL OF DIABETES NUTRITION AND METABOLIC DISEASES 2014. [DOI: 10.2478/rjdnmd-2014-0009] [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] Open
Abstract
Abstract Background and aims: The treatment of diabetic foot complications is combined, surgical and medical. The aim of our study was to assess the results of antimicrobial therapy in diabetic foot infections. Material and methods: 100 patients with diabetic foot infections admitted in the Surgery Clinic “I. Juvara” between December 2010 and February 2011 were analyzed. Results: Mean age at presentation was 58.4±9.74 years for women and 63.2±10.53 years for men. Mean diabetes duration was 12.3 years in men and 15.7 years in women. Patients with peripheral arterial disease represented 45% of cases, patients with neuropathy represented 16% of cases and patients with both conditions 39% of the cases. 41 patients suffered minor surgical interventions, 36 patients experienced minor amputations and 23 major amputations (below or above the knee). Antibiotic treatment included cephalosporins, fluoroquinolones and combinations with Metronidazole. After treatment, 74% of patients had a good postoperative evolution. For 26 patients a change of the antibiotic was necessary but only in 10 cases this was made according to antibiogram. Conclusions: Surgical debridement and wound management, carefully chosen antimicrobial therapy and treatment of comorbidities are very important for a successful outcome. Initial empirical antibiotic selection should be followed by culture-guided definitive therapy.
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Curcio D. Resistant pathogen-associated skin and skin-structure infections: antibiotic options. Expert Rev Anti Infect Ther 2014; 8:1019-36. [DOI: 10.1586/eri.10.87] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Zhou ZY, Zhao XQ, Shan BZ, Zhu J, Zhang X, Tian QF, Chen DF, Jia TH. Efficacy and safety of linezolid in treating gram-positive bacterial infection in the elderly: a retrospective study. Indian J Microbiol 2013; 54:104-7. [PMID: 24426174 DOI: 10.1007/s12088-013-0422-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2013] [Accepted: 07/25/2013] [Indexed: 11/29/2022] Open
Abstract
Linezolid is commonly used for the treatment of drug-resistant Gram-positive bacterial infection. This study aimed to evaluate the efficacy and safety of linezolid in treating Gram-positive bacterial infection in the elderly from January 2010 to December 2012. Total 40 elderly patients (>60 years old) with Gram-positive bacterial infection were treated with linezolid and their demographic and clinical data were collected and analyzed. Among the 40 patients, 31 patients (77.5 %) were cured. Linezolid caused little adverse effects on liver and renal function. The main adverse effect was thrombocytopenia and its incidence was significantly associated with baseline platelet count and the duration of treatment (P < 0.05). Logistic regression analysis showed that the baseline platelet count <200 × 10(6)/mL, but not the age, the sex, the length of hospital stay, baseline levels of hemoglobin, alanine aminotransferase, or creatinine clearance rate was significantly associated with linezolid-induced thrombocytopenia. In conclusion, linezolid is effective to cure Gram-positive bacterial infection in the elderly and causes little adverse effects on liver and renal function. Timely monitoring of baseline platelet count may be helpful to guide the use of linezolid to avoid the occurrence of thrombocytopenia.
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Affiliation(s)
- Zhi-Yong Zhou
- Department of Orthopaedic Surgery, Jinan Central Hospital affiliated to Shandong University, 105# Jiefang Road, Jinan, 250013 Shandong China ; Department of Orthopedics, Yantai Shan Hospital, 91 Jiefang Rd, Yantai, 264000 Shandong China
| | - Xue-Qin Zhao
- Department of Orthopedics, Yantai Shan Hospital, 91 Jiefang Rd, Yantai, 264000 Shandong China
| | - Bao-Zhong Shan
- Department of Orthopaedic Surgery, Jinan Central Hospital affiliated to Shandong University, 105# Jiefang Road, Jinan, 250013 Shandong China
| | - Jie Zhu
- Department of Orthopaedic Surgery, Jinan Central Hospital affiliated to Shandong University, 105# Jiefang Road, Jinan, 250013 Shandong China
| | - Xiang Zhang
- Department of Orthopaedic Surgery, Jinan Central Hospital affiliated to Shandong University, 105# Jiefang Road, Jinan, 250013 Shandong China
| | - Qing-Fen Tian
- Department of Orthopaedic Surgery, Jinan Central Hospital affiliated to Shandong University, 105# Jiefang Road, Jinan, 250013 Shandong China
| | - De-Fang Chen
- Department of Orthopaedic Surgery, Jinan Central Hospital affiliated to Shandong University, 105# Jiefang Road, Jinan, 250013 Shandong China
| | - Tang-Hong Jia
- Department of Orthopaedic Surgery, Jinan Central Hospital affiliated to Shandong University, 105# Jiefang Road, Jinan, 250013 Shandong China
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Silva NC, Sarmento B, Pintado M. The importance of antimicrobial peptides and their potential for therapeutic use in ophthalmology. Int J Antimicrob Agents 2013; 41:5-10. [DOI: 10.1016/j.ijantimicag.2012.07.020] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2012] [Revised: 07/17/2012] [Accepted: 07/29/2012] [Indexed: 12/20/2022]
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Rigatti F, Tizotti MK, Hörner R, Domingues VO, Martini R, Mayer LE, Khun FT, de França CA, da Costa MM. [Oxacillin-resistant coagulase-negative Staphylococci bacteremia at a teaching hospital in Santa Maria, State of Rio Grande do Sul, Brazil]. Rev Soc Bras Med Trop 2011; 43:686-90. [PMID: 21181024 DOI: 10.1590/s0037-86822010000600017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2010] [Accepted: 09/01/2010] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION This study aimed to characterize the prevalence and susceptibility profile to oxacillin-resistant Coagulase-negative Staphylococci strains isolated from blood cultures in a teaching hospital, located in Santa Maria, RS. In addition, different methodologies for phenotypic characterization of mecA-mediated oxacillin resistance were compared with genotypic reference testing. METHODS After identification (MicroScan - Siemens), the isolates were tested for antimicrobial sensitivity using disk diffusion and automation (MicroScan - Siemens). The presence of mecA gene was identified by the polymerase chain reaction molecular technique. RESULTS The most common species was Staphylococcus epidermidis (n=40, 67%). The mecA gene was detected in 54 (90%) strains, while analysis of the sensitivity profiles revealed a high rate of resistance to multiple classes of antimicrobial drugs. However, all isolates were uniformly sensitive to vancomycin and tigecycline. The cefoxitin disk was the phenotypic method that best correlated with the gold standard. CONCLUSIONS Analysis of the clinical significance of CoNS isolated from hemocultures and the precise detection of oxacillin resistance represent decisive factors for the correct choice of antibiotic therapy. Although vancomycin constitutes the normal treatment in most Brazilian hospitals, reduction in its use is recommended.
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Sianglum W, Srimanote P, Wonglumsom W, Kittiniyom K, Voravuthikunchai SP. Proteome analyses of cellular proteins in methicillin-resistant Staphylococcus aureus treated with rhodomyrtone, a novel antibiotic candidate. PLoS One 2011; 6:e16628. [PMID: 21326597 PMCID: PMC3033880 DOI: 10.1371/journal.pone.0016628] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2010] [Accepted: 01/05/2011] [Indexed: 11/19/2022] Open
Abstract
The ethanolic extract from Rhodomyrtus tomentosa leaf exhibited good antibacterial activities against both methicillin-resistant Staphylococcus aureus (MRSA) and S. aureus ATCC 29213. Its minimal inhibitory concentration (MIC) values ranged from 31.25–62.5 µg/ml, and the minimal bactericidal concentration (MBC) was 250 µg/ml. Rhodomyrtone, an acylphloroglucinol derivative, was 62.5–125 times more potent at inhibiting the bacteria than the ethanolic extract, the MIC and MBC values were 0.5 µg/ml and 2 µg/ml, respectively. To provide insights into antibacterial mechanisms involved, the effects of rhodomyrtone on cellular protein expression of MRSA have been investigated using proteomic approaches. Proteome analyses revealed that rhodomyrtone at subinhibitory concentration (0.174 µg/ml) affected the expression of several major functional classes of whole cell proteins in MRSA. The identified proteins involve in cell wall biosynthesis and cell division, protein degradation, stress response and oxidative stress, cell surface antigen and virulence factor, and various metabolic pathways such as amino acid, carbohydrate, energy, lipid, and nucleotide metabolism. Transmission electron micrographs confirmed the effects of rhodomyrtone on morphological and ultrastructural alterations in the treated bacterial cells. Biological processes in cell wall biosynthesis and cell division were interrupted. Prominent changes including alterations in cell wall, abnormal septum formation, cellular disintegration, and cell lysis were observed. Unusual size and shape of staphylococcal cells were obviously noted in the treated MRSA. These pioneer findings on proteomic profiling and phenotypic features of rhodomyrtone-treated MRSA may resolve its antimicrobial mechanisms which could lead to the development of a new effective regimen for the treatment of MRSA infections.
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Affiliation(s)
- Wipawadee Sianglum
- Department of Microbiology and Natural Products Research Center, Faculty of Science, Prince of Songkla University, Songkla, Thailand
| | - Potjanee Srimanote
- Graduate Study, Faculty of Allied Health Sciences, Thammasat University, Pathumtanee, Thailand
| | - Wijit Wonglumsom
- Department of Clinical Microbiology, Faculty of Medical Technology, Mahidol University, Nakhon Pathom, Thailand
| | - Kanokwan Kittiniyom
- Department of Clinical Microbiology, Faculty of Medical Technology, Mahidol University, Nakhon Pathom, Thailand
| | - Supayang P. Voravuthikunchai
- Department of Microbiology and Natural Products Research Center, Faculty of Science, Prince of Songkla University, Songkla, Thailand
- * E-mail:
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Crystal structure of the synergistic antibiotic pair, lankamycin and lankacidin, in complex with the large ribosomal subunit. Proc Natl Acad Sci U S A 2011; 108:2717-22. [PMID: 21282615 DOI: 10.1073/pnas.1019406108] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The structures of the large ribosomal subunit of Deinococcus radiodurans (D50S) in complex with the antibiotic lankamycin (3.2 Å) and a double antibiotic complex of lankamycin and lankacidin C (3.45 Å) have been determined, in continuation of previous crystallographic studies on lankacidin-D50S complex. These two drugs have been previously reported to inhibit ribosomal function with mild synergistic effect. Lankamycin, a member of the macrolide family, binds in a similar manner to erythromycin. However, when in complex with lankacidin, lankamycin is located so that it can form interactions with lankacidin in the adjacent ribosomal binding site. When compared to the well-documented synergistic antibiotics, Streptogramins A and B, the pair of lankacidin and lankamycin bind in similar sites, the peptidyl transferase center and nascent peptide exit tunnel, respectively. Herein, we discuss the structural basis for antibiotic synergism and highlight the key factors involved in ribosomal inhibition.
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