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Ali A, Waris A, Khan MA, Asim M, Khan AU, Khan S, Zeb J. Recent advancement, immune responses, and mechanism of action of various vaccines against intracellular bacterial infections. Life Sci 2023; 314:121332. [PMID: 36584914 DOI: 10.1016/j.lfs.2022.121332] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 12/20/2022] [Accepted: 12/23/2022] [Indexed: 12/29/2022]
Abstract
Emerging and re-emerging bacterial infections are a serious threat to human and animal health. Extracellular bacteria are free-living, while facultative intracellular bacteria replicate inside eukaryotic host cells. Many serious human illnesses are now known to be caused by intracellular bacteria such as Salmonella enterica, Escherichia coli, Staphylococcus aureus, Rickettsia massiliae, Chlamydia species, Brucella abortus, Mycobacterium tuberculosis and Listeria monocytogenes, which result in substantial morbidity and mortality. Pathogens like Mycobacterium, Brucella, MRSA, Shigella, Listeria, and Salmonella can infiltrate and persist in mammalian host cells, particularly macrophages, where they proliferate and establish a repository, resulting in chronic and recurrent infections. The current treatment for these bacteria involves the application of narrow-spectrum antibiotics. FDA-approved vaccines against obligate intracellular bacterial infections are lacking. The development of vaccines against intracellular pathogenic bacteria are more difficult because host defense against these bacteria requires the activation of the cell-mediated pathway of the immune system, such as CD8+ T and CD4+ T. However, different types of vaccines, including live, attenuated, subunit, killed whole cell, nano-based and DNA vaccines are currently in clinical trials. Substantial development has been made in various vaccine strategies against intracellular pathogenic bacteria. This review focuses on the mechanism of intracellular bacterial infection, host immune response, and recent advancements in vaccine development strategies against various obligate intracellular bacterial infections.
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Affiliation(s)
- Asmat Ali
- Department of Biotechnology and Genetic Engineering, Hazara University Mansehra, Pakistan
| | - Abdul Waris
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong.
| | - Muhammad Ajmal Khan
- Division of Life Sciences, Center for Cancer Research and State Key Laboratory of Molecular Neurosciences, The Hong Kong University of Science and Technology, Hong Kong
| | - Muhammad Asim
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong
| | - Atta Ullah Khan
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, China
| | - Sahrish Khan
- Department of Biotechnology, Quaid-i-Azam University, Islamabad, Pakistan
| | - Jehan Zeb
- Department of Infectious Diseases and Public Health, City University of Hong Kong, Hong Kong
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2
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Hemmadi V, Biswas M. An overview of moonlighting proteins in Staphylococcus aureus infection. Arch Microbiol 2020; 203:481-498. [PMID: 33048189 PMCID: PMC7551524 DOI: 10.1007/s00203-020-02071-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 09/29/2020] [Accepted: 10/01/2020] [Indexed: 01/01/2023]
Abstract
Staphylococcus aureus is responsible for numerous instances of superficial, toxin-mediated, and invasive infections. The emergence of methicillin-resistant (MRSA), as well as vancomycin-resistant (VRSA) strains of S. aureus, poses a massive threat to human health. The tenacity of S. aureus to acquire resistance against numerous antibiotics in a very short duration makes the effort towards developing new antibiotics almost futile. S. aureus owes its destructive pathogenicity to the plethora of virulent factors it produces among which a majority of them are moonlighting proteins. Moonlighting proteins are the multifunctional proteins in which a single protein, with different oligomeric conformations, perform multiple independent functions in different cell compartments. Peculiarly, proteins involved in key ancestral functions and metabolic pathways typically exhibit moonlighting functions. Pathogens mainly employ those proteins as virulent factors which exhibit high structural conservation towards their host counterparts. Consequentially, the host immune system counteracts these invading bacterial virulent factors with minimal protective action. Additionally, many moonlighting proteins also play multiple roles in various stages of pathogenicity while augmenting the virulence of the bacterium. This has necessitated elaborative studies to be conducted on moonlighting proteins of S. aureus that can serve as drug targets. This review is a small effort towards understanding the role of various moonlighting proteins in the pathogenicity of S. aureus.
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Affiliation(s)
- Vijay Hemmadi
- Department of Biological Sciences, Birla Institute of Technology and Science, BITS-Pilani, K. K. Birla Goa Campus, NH17B, Zuarinagar, Goa, 403726, India
| | - Malabika Biswas
- Department of Biological Sciences, Birla Institute of Technology and Science, BITS-Pilani, K. K. Birla Goa Campus, NH17B, Zuarinagar, Goa, 403726, India.
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3
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Gaidar D, Jonas A, Akulenko R, Ruffing U, Herrmann M, Helms V, von Müller L. Analysis of the dynamics of Staphylococcus aureus binding to white blood cells using whole blood assay and geno-to-pheno mapping. Int J Med Microbiol 2020; 310:151411. [DOI: 10.1016/j.ijmm.2020.151411] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 12/02/2019] [Accepted: 02/03/2020] [Indexed: 12/28/2022] Open
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4
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Lee MM, Xu W, Zheng L, Yu B, Leung AC, Kwok RT, Lam JW, Xu FJ, Wang D, Tang BZ. Ultrafast discrimination of Gram-positive bacteria and highly efficient photodynamic antibacterial therapy using near-infrared photosensitizer with aggregation-induced emission characteristics. Biomaterials 2020; 230:119582. [DOI: 10.1016/j.biomaterials.2019.119582] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Revised: 09/25/2019] [Accepted: 10/25/2019] [Indexed: 10/25/2022]
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5
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Fan X, Xu W, Han J, Jiang X, Wink M, Wu G. Antimicrobial peptide hybrid fluorescent protein based sensor array discriminate ten most frequent clinic isolates. Biochim Biophys Acta Gen Subj 2019; 1863:1158-1166. [DOI: 10.1016/j.bbagen.2019.04.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 03/14/2019] [Accepted: 04/10/2019] [Indexed: 01/30/2023]
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6
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Kang M, Kwok RTK, Wang J, Zhang H, Lam JWY, Li Y, Zhang P, Zou H, Gu X, Li F, Tang BZ. A multifunctional luminogen with aggregation-induced emission characteristics for selective imaging and photodynamic killing of both cancer cells and Gram-positive bacteria. J Mater Chem B 2018; 6:3894-3903. [PMID: 32254317 DOI: 10.1039/c8tb00572a] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The increasing impact of bacteria on cancer progression and treatments has been witnessed in recent years. Insufficient attention to cancer-related bacteria may lead to distant metastasis, poor therapeutic efficiency and low survival rates for cancers. Exploiting new approaches that enable selective imaging and effective killing of cancer cells and bacteria are thus of great value for the battle against cancers. Herein, we report an aggregation-induced emission (AIE) luminogen, namely TPPCN, with intense emission and efficient reactive oxygen species production for fluorescence imaging and killing cancer cells and Gram-positive bacteria. This work not only demonstrates the potential of AIE luminogens in comprehensive cancer treatments but also stimulates the enthusiasm of scientists to design more multifunctional AIE systems for both cancer and bacteria theranostics.
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Affiliation(s)
- Miaomiao Kang
- Guangdong Provincial Key Laboratory of Brain Function and Disease, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China.
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Yu W, Yao D, Yu S, Wang X, Li X, Wang M, Liu S, Feng Z, Chen X, Li W, Wang L, Liu W, Ma J, Yu L, Tong C, Song B, Cui Y. Protective humoral and CD4 + T cellular immune responses of Staphylococcus aureus vaccine MntC in a murine peritonitis model. Sci Rep 2018; 8:3580. [PMID: 29483570 PMCID: PMC5832154 DOI: 10.1038/s41598-018-22044-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 02/15/2018] [Indexed: 12/15/2022] Open
Abstract
Staphylococcus aureus can cause different types of diseases from mild skin infections to life-threatening sepsis worldwide. Owing to the emergence and transmission of multidrug-resistant strains, developing an impactful immunotherapy especially vaccine control approach against S. aureus infections is increasingly encouraged and supported. S. aureus manganese transport protein C (MntC), which is a highly-conserved cell surface protein, can elicit protective immunity against S. aureus and Staphylococcus epidermidis. In this study, we evaluated the humoral immune response and CD4+ T cell-mediated immune responses in a mouse peritonitis model. The results showed that MntC-specific antibodies conferred an essential protection for mice to reduce invasion of S. aureus, which was corroborated via the opsonophagocytic killing assay and passive immunization experiment in mice, and moreover MntC-induced Th17 played a remarkable part in preventing S. aureus infection since the MntC-induced protective immunity decreased after neutralization of IL-17 by antibody in vivo and the Th17 adoptive transferred-mice could partly resist S. aureus challenge. In conclusion, we considered that the MntC-specific antibodies and MntC-specific Th17 cells play cooperative roles in the prevention of S. aureus infection.
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Affiliation(s)
- Wei Yu
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, 163319, China
| | - Di Yao
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, 163319, China
| | - Simiao Yu
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, 163319, China
| | - Xintong Wang
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, 163319, China
| | - Xiaoting Li
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, 163319, China
| | - Mengyao Wang
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, 163319, China
| | - Shuo Liu
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, 163319, China
| | - Zhenyue Feng
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, 163319, China
| | - Xiaoting Chen
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, 163319, China
| | - Wanyu Li
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, 163319, China
| | - Lizi Wang
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, 163319, China
| | - Wei Liu
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, 163319, China
| | - Jinzhu Ma
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, 163319, China
| | - Liquan Yu
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, 163319, China
| | - Chunyu Tong
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, 163319, China
| | - Baifen Song
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, 163319, China
| | - Yudong Cui
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, 163319, China.
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Asadollahi P, Farahani NN, Mirzaii M, Khoramrooz SS, van Belkum A, Asadollahi K, Dadashi M, Darban-Sarokhalil D. Distribution of the Most Prevalent Spa Types among Clinical Isolates of Methicillin-Resistant and -Susceptible Staphylococcus aureus around the World: A Review. Front Microbiol 2018; 9:163. [PMID: 29487578 PMCID: PMC5816571 DOI: 10.3389/fmicb.2018.00163] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 01/24/2018] [Indexed: 12/25/2022] Open
Abstract
Background:Staphylococcus aureus, a leading cause of community-acquired and nosocomial infections, remains a major health problem worldwide. Molecular typing methods, such as spa typing, are vital for the control and, when typing can be made more timely, prevention of S. aureus spread around healthcare settings. The current study aims to review the literature to report the most common clinical spa types around the world, which is important for epidemiological surveys and nosocomial infection control policies. Methods: A search via PubMed, Google Scholar, Web of Science, Embase, the Cochrane library, and Scopus was conducted for original articles reporting the most prevalent spa types among S. aureus isolates. The search terms were “Staphylococcus aureus, spa typing.” Results: The most prevalent spa types were t032, t008 and t002 in Europe; t037 and t002 in Asia; t008, t002, and t242 in America; t037, t084, and t064 in Africa; and t020 in Australia. In Europe, all the isolates related to spa type t032 were MRSA. In addition, spa type t037 in Africa and t037and t437 in Australia also consisted exclusively of MRSA isolates. Given the fact that more than 95% of the papers we studied originated in the past decade there was no option to study the dynamics of regional clone emergence. Conclusion: This review documents the presence of the most prevalent spa types in countries, continents and worldwide and shows big local differences in clonal distribution.
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Affiliation(s)
- Parisa Asadollahi
- Department of Microbiology, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Narges Nodeh Farahani
- Department of Microbiology, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mehdi Mirzaii
- Department of Microbiology, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Seyed Sajjad Khoramrooz
- Department of Microbiology, Faculty of Medicine, Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Alex van Belkum
- Data Analytics Unit, bioMérieux 3, La Balme Les Grottes, France
| | - Khairollah Asadollahi
- Department of Social Medicine, Faculty of Medicine, Ilam University of Medical Sciences, Ilam, Iran.,Faculty of Medicine, Biotechnology and Medicinal Plants Researches Center, Ilam University of Medical Sciences, Ilam, Iran
| | - Masoud Dadashi
- Department of Microbiology, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Davood Darban-Sarokhalil
- Department of Microbiology, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
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9
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Han J, Cheng H, Wang B, Braun MS, Fan X, Bender M, Huang W, Domhan C, Mier W, Lindner T, Seehafer K, Wink M, Bunz UHF. A Polymer/Peptide Complex-Based Sensor Array That Discriminates Bacteria in Urine. Angew Chem Int Ed Engl 2017; 56:15246-15251. [DOI: 10.1002/anie.201706101] [Citation(s) in RCA: 100] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 08/15/2017] [Indexed: 11/07/2022]
Affiliation(s)
- Jinsong Han
- Organisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Haoran Cheng
- Institute of Pharmacy and Molecular Biotechnology; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 364 69120 Heidelberg Germany
| | - Benhua Wang
- Organisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Markus Santhosh Braun
- Institute of Pharmacy and Molecular Biotechnology; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 364 69120 Heidelberg Germany
| | - Xiaobo Fan
- Institute of Pharmacy and Molecular Biotechnology; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 364 69120 Heidelberg Germany
- Diognostics Department; Medical School Southeast University; Nanjing 210009 China
| | - Markus Bender
- Organisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Wei Huang
- Organisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Cornelius Domhan
- Institute of Pharmacy and Molecular Biotechnology; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 364 69120 Heidelberg Germany
| | - Walter Mier
- Department of Nuclear Medicine; Heidelberg University; Im Neuenheimer Feld 400 69120 Heidelberg Germany
| | - Thomas Lindner
- Department of Nuclear Medicine; Heidelberg University; Im Neuenheimer Feld 400 69120 Heidelberg Germany
| | - Kai Seehafer
- Organisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Michael Wink
- Institute of Pharmacy and Molecular Biotechnology; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 364 69120 Heidelberg Germany
| | - Uwe H. F. Bunz
- Organisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
- Centre of Advanced Materials; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 225 69120 Heidelberg Germany
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10
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Han J, Cheng H, Wang B, Braun MS, Fan X, Bender M, Huang W, Domhan C, Mier W, Lindner T, Seehafer K, Wink M, Bunz UHF. A Polymer/Peptide Complex-Based Sensor Array That Discriminates Bacteria in Urine. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706101] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jinsong Han
- Organisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Haoran Cheng
- Institute of Pharmacy and Molecular Biotechnology; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 364 69120 Heidelberg Germany
| | - Benhua Wang
- Organisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Markus Santhosh Braun
- Institute of Pharmacy and Molecular Biotechnology; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 364 69120 Heidelberg Germany
| | - Xiaobo Fan
- Institute of Pharmacy and Molecular Biotechnology; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 364 69120 Heidelberg Germany
- Diognostics Department; Medical School Southeast University; Nanjing 210009 China
| | - Markus Bender
- Organisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Wei Huang
- Organisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Cornelius Domhan
- Institute of Pharmacy and Molecular Biotechnology; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 364 69120 Heidelberg Germany
| | - Walter Mier
- Department of Nuclear Medicine; Heidelberg University; Im Neuenheimer Feld 400 69120 Heidelberg Germany
| | - Thomas Lindner
- Department of Nuclear Medicine; Heidelberg University; Im Neuenheimer Feld 400 69120 Heidelberg Germany
| | - Kai Seehafer
- Organisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Michael Wink
- Institute of Pharmacy and Molecular Biotechnology; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 364 69120 Heidelberg Germany
| | - Uwe H. F. Bunz
- Organisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
- Centre of Advanced Materials; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 225 69120 Heidelberg Germany
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11
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Yu W, Wang L, Wang M, Liu S, Li W, Wang X, Li X, Yu S, Yao D, Ma J, Yu L, Chen J, Feng Z, Cui Y. Identification and characterization of CD4 + T cell epitopes on manganese transport protein C of Staphylococcus aureus. Microb Pathog 2017; 112:30-37. [PMID: 28942173 DOI: 10.1016/j.micpath.2017.09.045] [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] [Received: 07/06/2017] [Revised: 08/26/2017] [Accepted: 09/19/2017] [Indexed: 11/29/2022]
Abstract
Manganese transport protein C (MntC) of Staphylococcus aureus represents an excellent vaccine-candidate antigen. The important role of CD4+ T cells in effective immunity against S. aureus infection was shown; however, CD4+ T cell-specific epitopes on S. aureus MntC have not been well identified. Here, we used bioinformatics prediction algorithms to evaluate and identify nine candidate epitopes within MntC. Our results showed that peptide M8 emulsified in Freund's adjuvant induced a much higher cell-proliferation rate as compared with controls. Additionally, CD4+ T cells stimulated with peptide M8 secreted significantly higher levels of interferon-γ and interleukin-17A. These results suggested that peptide M8 represented an H-2d (I-E)-restricted Th17-specific epitope.
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Affiliation(s)
- Wei Yu
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, China
| | - Lizi Wang
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, China
| | - Mengyao Wang
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, China
| | - Shuo Liu
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, China
| | - Wanyu Li
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, China
| | - Xintong Wang
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, China
| | - Xiaoting Li
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, China
| | - Simiao Yu
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, China
| | - Di Yao
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, China
| | - Jinzhu Ma
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, China
| | - Liquan Yu
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, China
| | - Jing Chen
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, China
| | - Zhenyue Feng
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, China
| | - Yudong Cui
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, China.
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Hoorijani MN, Rostami H, Pourhajibagher M, Chiniforush N, Heidari M, Pourakbari B, Kazemian H, Davari K, Amini V, Raoofian R, Bahador A. The effect of antimicrobial photodynamic therapy on the expression of novel methicillin resistance markers determined using cDNA-AFLP approach in Staphylococcus aureus. Photodiagnosis Photodyn Ther 2017. [DOI: 10.1016/j.pdpdt.2017.06.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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13
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Vubil D, Garrine M, Ruffing U, Acácio S, Sigaúque B, Alonso PL, von Müller L, Herrmann M, Mandomando I. Molecular Characterization of Community Acquired Staphylococcus aureus Bacteremia in Young Children in Southern Mozambique, 2001-2009. Front Microbiol 2017; 8:730. [PMID: 28522992 PMCID: PMC5415612 DOI: 10.3389/fmicb.2017.00730] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 04/07/2017] [Indexed: 01/15/2023] Open
Abstract
Background: The emergence of community-acquired Staphylococcus aureus infections is increasingly recognized as life threating problem worldwide. In Manhiça district, southern Mozambique, S. aureus is the leading cause of community-acquired bacteremia in neonates. Methods: Eighty-four S. aureus isolates from children less than 5 years admitted to Manhiça District Hospital from 2001 to 2009 were randomly selected and genetically characterized by DNA microarray and spa typing. Antimicrobial susceptibility was determined by VITEK 2. Results: Thirty-eight different spa types and 14 clonal complexes (CC) were identified. Spa-type t084 (n = 10; 12%) was the most predominant while CC8 (n = 18; 21%) and CC15 (n = 14; 16%) were the most frequent CCs. Mortality tended to be higher among children infected with CC45 (33.3%, 1/3) and CC8 (27.8%, 5/18). The majority of isolates possessed the accessory gene regulator I (45%) and belonged to either capsule type 8 (52%) or 5 (47%). Panton valentine leukocidin (PVL) encoding genes were detected in 30%. Antibiotic resistance was high for penicillin (89%), tetracycline (59%) and Trimethoprim Sulfamethoxazole (36%) while MRSA was uncommon (8%). Conclusions: Although MRSA were uncommon, we found high genetic diversity of methicillin susceptible S. aureus causing bacteremia in Mozambican children, associated with high resistance to the most available antibiotics in this community. Some CCs are likely to be more lethal indicating the need for prompt recognition and appropriate treatment.
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Affiliation(s)
- Delfino Vubil
- Centro de Investigação em Saúde de Manhiça (CISM)Maputo, Mozambique
| | | | - Ulla Ruffing
- Institute of Medical Microbiology and Hygiene, University of SaarlandHomburg, Germany
| | - Sozinho Acácio
- Centro de Investigação em Saúde de Manhiça (CISM)Maputo, Mozambique.,Instituto Nacional de Saúde (INS), Ministério da SaúdeMaputo, Mozambique
| | - Betuel Sigaúque
- Centro de Investigação em Saúde de Manhiça (CISM)Maputo, Mozambique.,Instituto Nacional de Saúde (INS), Ministério da SaúdeMaputo, Mozambique
| | - Pedro L Alonso
- Centro de Investigação em Saúde de Manhiça (CISM)Maputo, Mozambique.,Barcelona Institute of Global HealthBarcelona, Spain
| | - Lutz von Müller
- Institute of Medical Microbiology and Hygiene, University of SaarlandHomburg, Germany
| | - Mathias Herrmann
- Institute of Medical Microbiology and Hygiene, University of SaarlandHomburg, Germany
| | - Inácio Mandomando
- Centro de Investigação em Saúde de Manhiça (CISM)Maputo, Mozambique.,Instituto Nacional de Saúde (INS), Ministério da SaúdeMaputo, Mozambique
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14
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Högmander M, Paul CJ, Chan S, Hokkanen E, Eskonen V, Pahikkala T, Pihlasalo S. Luminometric Label Array for Counting and Differentiation of Bacteria. Anal Chem 2017; 89:3208-3216. [DOI: 10.1021/acs.analchem.6b05142] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Milla Högmander
- Department
of Cell Biology and Anatomy, Institute of Biomedicine, University of Turku, Kiinamyllynkatu 10, FI-20520 Turku, Finland
| | - Catherine J. Paul
- Applied
Microbiology, Department of Chemistry, Lund University, P.O. Box 124, SE-22100 Lund, Sweden
- Water
Resources Engineering, Department of Building and Environmental Engineering, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
| | - Sandy Chan
- Applied
Microbiology, Department of Chemistry, Lund University, P.O. Box 124, SE-22100 Lund, Sweden
- Sweden
Water Research, Ideon Science Park, Scheelevägen 15, SE-22370 Lund, Sweden
| | - Elina Hokkanen
- Department
of Cell Biology and Anatomy, Institute of Biomedicine, University of Turku, Kiinamyllynkatu 10, FI-20520 Turku, Finland
| | - Ville Eskonen
- Laboratory
of Materials Chemistry and Chemical Analysis, Department of Chemistry, University of Turku, Vatselankatu 2, FI-20500 Turku, Finland
| | - Tapio Pahikkala
- Department
of Information Technology, University of Turku, Vesilinnantie
5, FI-20500 Turku, Finland
| | - Sari Pihlasalo
- Department
of Cell Biology and Anatomy, Institute of Biomedicine, University of Turku, Kiinamyllynkatu 10, FI-20520 Turku, Finland
- Applied
Microbiology, Department of Chemistry, Lund University, P.O. Box 124, SE-22100 Lund, Sweden
- Laboratory
of Materials Chemistry and Chemical Analysis, Department of Chemistry, University of Turku, Vatselankatu 2, FI-20500 Turku, Finland
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15
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Akulenko R, Merl M, Helms V. BEclear: Batch Effect Detection and Adjustment in DNA Methylation Data. PLoS One 2016; 11:e0159921. [PMID: 27559732 PMCID: PMC4999208 DOI: 10.1371/journal.pone.0159921] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Accepted: 07/11/2016] [Indexed: 01/07/2023] Open
Abstract
Batch effects describe non-natural variations of, for example, large-scale genomic data sets. If not corrected by suitable numerical algorithms, batch effects may seriously affect the analysis of these datasets. The novel array platform independent software tool BEclear enables researchers to identify those portions of the data that deviate statistically significant from the remaining data and to replace these portions by typical values reconstructed from neighboring data entries based on latent factor models. In contrast to other comparable methods that often use some sort of global normalization of the data, BEclear avoids changing the apparently unaffected parts of the data. We tested the performance of this approach on DNA methylation data for various tumor data sets taken from The Cancer Genome Atlas and compared the results to those obtained with the existing algorithms ComBat, Surrogate Variable Analysis, RUVm and Functional normalization. BEclear constantly performed at par with or better than these methods. BEclear is available as an R package at the Bioconductor project http://bioconductor.org/packages/release/bioc/html/BEclear.html.
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Affiliation(s)
- Ruslan Akulenko
- Center for Bioinformatics, Saarland University, Saarbruecken, Germany
- Graduate School for Computer Science, Saarland University, Saarbruecken, Germany
| | - Markus Merl
- Center for Bioinformatics, Saarland University, Saarbruecken, Germany
| | - Volkhard Helms
- Center for Bioinformatics, Saarland University, Saarbruecken, Germany
- * E-mail:
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16
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Ilczyszyn WM, Sabat AJ, Akkerboom V, Szkarlat A, Klepacka J, Sowa-Sierant I, Wasik B, Kosecka-Strojek M, Buda A, Miedzobrodzki J, Friedrich AW. Clonal Structure and Characterization of Staphylococcus aureus Strains from Invasive Infections in Paediatric Patients from South Poland: Association between Age, spa Types, Clonal Complexes, and Genetic Markers. PLoS One 2016; 11:e0151937. [PMID: 26992009 PMCID: PMC4798296 DOI: 10.1371/journal.pone.0151937] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Accepted: 03/07/2016] [Indexed: 12/20/2022] Open
Abstract
The aim of current study was to examine clonal structure and genetic profile of invasive Staphylococcus aureus isolates recovered from infants and children treated at the Jagiellonian University Children’s Hospital of Krakow, Poland. The 107 invasive S. aureus isolates, collected between February 2012 and August 2014, were analysed retrospectively. Antimicrobial susceptibility testing, spa typing and DNA microarray analysis were performed to determine clonal distribution, diversity and gene content in regard to patients characteristics. In total, 107 isolates were recovered from 88 patients with clinical symptoms of invasive bacterial infection. The final set of 92 non-duplicate samples included 38 MRSA isolates. Additionally, a set of 54 S. aureus isolates collected during epidemiological screening was genotyped and analysed. There were 72 healthcare-associated (HCA) and 20 community-onset (CO) infection events caused by 33 and 5 MRSA isolates, respectively. The majority of isolates were affiliated with the major European clonal complexes CC5 (t003, spa-CC 002), CC45 (spa-CC 015), CC7 or CC15 (t084, t091, spa-CC 084). Two epidemic clones (CC5-MRSA-II or CC45-MRSA-IV) dominated among MRSA isolates, while MSSA population contained 15 different CCs. The epidemiological screening isolates belonged to similar genetic lineages as those collected from invasive infection cases. The HCA infection events, spa types t003, t2642 or CC5 were significantly associated with infections occurring in neonates and children under 5 years of age. Moreover, carriage of several genetic markers, including erm(A), sea (N315), egc-cluster, chp was significantly higher in isolates obtained from children in this age group. The spa types t091 and t008 were underrepresented among patients aged 5 years or younger, whereas spa type t008, CC8 and presence of splE was associated with infection in children aged 10 years or older. The HCA-MRSA strains were most frequently found in children under 5 years, although the majority of invasive infections was associated with MSSA strains. Moreover, an association between age group of children from the study population and a specific strain genotype (spa type, clonal complex or genetic content) was observed among the patients.
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Affiliation(s)
- Weronika M Ilczyszyn
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Artur J Sabat
- Department of Medical Microbiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Viktoria Akkerboom
- Department of Medical Microbiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Anna Szkarlat
- Department of Clinical Microbiology, Children's University Hospital, Jagiellonian University, Krakow, Poland
| | - Joanna Klepacka
- Department of Clinical Microbiology, Children's University Hospital, Jagiellonian University, Krakow, Poland
| | - Iwona Sowa-Sierant
- Department of Clinical Microbiology, Children's University Hospital, Jagiellonian University, Krakow, Poland
| | - Barbara Wasik
- Department of Clinical Microbiology, Children's University Hospital, Jagiellonian University, Krakow, Poland
| | - Maja Kosecka-Strojek
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Aneta Buda
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Jacek Miedzobrodzki
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Alexander W Friedrich
- Department of Medical Microbiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
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17
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Detecting Staphylococcus aureus Virulence and Resistance Genes: a Comparison of Whole-Genome Sequencing and DNA Microarray Technology. J Clin Microbiol 2016; 54:1008-16. [PMID: 26818676 DOI: 10.1128/jcm.03022-15] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Accepted: 01/21/2016] [Indexed: 12/31/2022] Open
Abstract
Staphylococcus aureusis a major bacterial pathogen causing a variety of diseases ranging from wound infections to severe bacteremia or intoxications. Besides host factors, the course and severity of disease is also widely dependent on the genotype of the bacterium. Whole-genome sequencing (WGS), followed by bioinformatic sequence analysis, is currently the most extensive genotyping method available. To identify clinically relevant staphylococcal virulence and resistance genes in WGS data, we developed anin silicotyping scheme for the software SeqSphere(+)(Ridom GmbH, Münster, Germany). The implemented target genes (n= 182) correspond to those queried by the IdentibacS. aureusGenotyping DNA microarray (Alere Technologies, Jena, Germany). Thein silicoscheme was evaluated by comparing the typing results of microarray and of WGS for 154 humanS. aureusisolates. A total of 96.8% (n= 27,119) of all typing results were equally identified with microarray and WGS (40.6% present and 56.2% absent). Discrepancies (3.2% in total) were caused by WGS errors (1.7%), microarray hybridization failures (1.3%), wrong prediction of ambiguous microarray results (0.1%), or unknown causes (0.1%). Superior to the microarray, WGS enabled the distinction of allelic variants, which may be essential for the prediction of bacterial virulence and resistance phenotypes. Multilocus sequence typing clonal complexes and staphylococcal cassette chromosomemecelement types inferred from microarray hybridization patterns were equally determined by WGS. In conclusion, WGS may substitute array-based methods due to its universal methodology, open and expandable nature, and rapid parallel analysis capacity for different characteristics in once-generated sequences.
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18
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Shittu AO, Oyedara O, Okon K, Raji A, Peters G, von Müller L, Schaumburg F, Herrmann M, Ruffing U. An assessment on DNA microarray and sequence-based methods for the characterization of methicillin-susceptible Staphylococcus aureus from Nigeria. Front Microbiol 2015; 6:1160. [PMID: 26539185 PMCID: PMC4612102 DOI: 10.3389/fmicb.2015.01160] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 10/05/2015] [Indexed: 11/17/2022] Open
Abstract
Staphylococcus aureus is an important human pathogen causing nosocomial and community-acquired infections worldwide. In the characterization of this opportunistic pathogen, DNA microarray hybridization technique is used as an alternative to sequence based genotyping to obtain a comprehensive assessment on the virulence, resistance determinants, and population structure. The objective of this study was to characterize a defined collection of S. aureus isolates from Nigeria using the microarray technique, and to assess the extent that it correlates with sequence-based genotyping methods. The clonal diversity and genomic content of 52 methicillin-susceptible Staphylococcus aureus (MSSA) were investigated by spa typing, MLST and DNA microarray hybridization. More than half (55.8%) of these isolates were associated with clonal complexes (CCs) typically associated with methicillin-resistant S. aureus (MRSA) clones i.e., CC1, CC5, CC8, CC30, and CC45. Certain genes linked with virulence (hlgA and clfA) and adherence (ebpS, fnbA, sspA, sspB, and sspP) were detected in all isolates. A number of genes or gene clusters were associated with distinct clonal types. The enterotoxin gene cluster (egc) was linked with CC5, CC25, CC30, CC45, and CC121, enterotoxin H gene (seh) with CC1, exfoliative toxin D gene (etd) with CC25 and CC80, and the epidermal cell differentiation inhibitor B gene (edinB) with CC25, CC80, and CC152. The excellent agreement between data from DNA microarray and MLST in the delineation of Nigerian MSSA isolates indicates that the microarray technique is a useful tool to provide information on antibiotic resistance, clonal diversity and virulence factors associated with infection and disease.
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Affiliation(s)
- Adebayo O Shittu
- Department of Microbiology, Obafemi Awolowo University Ile-Ife, Nigeria ; Institute of Medical Microbiology and Hygiene, Saarland University Homburg, Germany
| | - Omotayo Oyedara
- Department of Biological Sciences, College of Science, Engineering and Technology, Osun State University Osogbo, Nigeria
| | - Kenneth Okon
- Department of Medical Laboratory Services, Federal Medical Centre Makurdi, Nigeria
| | - Adeola Raji
- Department of Microbiology and Immunology, Alfaisal University Riyadh, Saudi Arabia
| | - Georg Peters
- Institute of Medical Microbiology, University Hospital Münster Münster, Germany
| | - Lutz von Müller
- Institute of Medical Microbiology and Hygiene, Saarland University Homburg, Germany
| | - Frieder Schaumburg
- Institute of Medical Microbiology, University Hospital Münster Münster, Germany
| | - Mathias Herrmann
- Institute of Medical Microbiology and Hygiene, Saarland University Homburg, Germany
| | - Ulla Ruffing
- Institute of Medical Microbiology and Hygiene, Saarland University Homburg, Germany
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19
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Hamed M, Nitsche-Schmitz DP, Ruffing U, Steglich M, Dordel J, Nguyen D, Brink JH, Chhatwal GS, Herrmann M, Nübel U, Helms V, von Müller L. Whole genome sequence typing and microarray profiling of nasal and blood stream methicillin-resistant Staphylococcus aureus isolates: Clues to phylogeny and invasiveness. INFECTION GENETICS AND EVOLUTION 2015; 36:475-482. [PMID: 26297907 DOI: 10.1016/j.meegid.2015.08.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Revised: 08/11/2015] [Accepted: 08/18/2015] [Indexed: 11/29/2022]
Abstract
Hospital-associated methicillin-resistant Staphylococcus aureus (MRSA) infections are frequently caused by predominant clusters of closely related isolates that cannot be discriminated by conventional diagnostic typing methods. Whole genome sequencing (WGS) and DNA microarray (MA) now allow for better discrimination within a prevalent clonal complex (CC). This single center exploratory study aims to distinguish invasive (blood stream infection) and non-invasive (nasal colonization) MRSA isolates of the same CC5 into phylogenetic- and virulence-associated genotypic subgroups by WGS and MA. A cohort of twelve blood stream and fifteen nasal MRSA isolates of CC5 (spa-types t003 and t504) was selected. Isolates were propagated at the same period of time from unrelated patients treated at the University of Saarland Medical Center, Germany. Rooted phylotyping based on WGS with core-genome single nucleotide polymorphism (SNP) analysis revealed two local clusters of closely related CC5 subgroups (t504 and Clade1 t003) which were separated from other local t003 isolates and from unrelated CC5 MRSA reference isolates of German origin. Phylogenetic subtyping was not associated with invasiveness when comparing blood stream and nasal isolates. Clustering based on MA profiles was not concordant with WGS phylotyping, but MA profiles may identify subgroups of isolates with nasal and blood stream origin. Among the new putative virulence associated genes identified by WGS, the strongest association with blood stream infections was shown for ebhB mutants. Analysis of the core-genome together with the accessory genome enables subtyping of closely related MRSA isolates according to phylogeny and presumably also to the potential virulence capacity of isolates.
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Affiliation(s)
- Mohamed Hamed
- Center for Bioinformatics, Saarland University, Saarbruecken, Germany
| | | | - Ulla Ruffing
- Institute of Medical Microbiology and Hygiene, University of Saarland Medical Center, Homburg, Germany
| | | | | | - Duy Nguyen
- Center for Bioinformatics, Saarland University, Saarbruecken, Germany
| | - Jan-Hendrik Brink
- Institute of Medical Microbiology and Hygiene, University of Saarland Medical Center, Homburg, Germany
| | - Gursharan Singh Chhatwal
- Department of Medical Microbiology, Helmholtz Centre for Infection Research (HZI), Braunschweig, Germany
| | - Mathias Herrmann
- Institute of Medical Microbiology and Hygiene, University of Saarland Medical Center, Homburg, Germany
| | | | - Volkhard Helms
- Center for Bioinformatics, Saarland University, Saarbruecken, Germany
| | - Lutz von Müller
- Institute of Medical Microbiology and Hygiene, University of Saarland Medical Center, Homburg, Germany.
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20
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Feng G, Yuan Y, Fang H, Zhang R, Xing B, Zhang G, Zhang D, Liu B. A light-up probe with aggregation-induced emission characteristics (AIE) for selective imaging, naked-eye detection and photodynamic killing of Gram-positive bacteria. Chem Commun (Camb) 2015; 51:12490-3. [DOI: 10.1039/c5cc03807c] [Citation(s) in RCA: 149] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We report a multifunctional light-up probe based on AIEgens for selective recognition, naked-eye identification, and photodynamic killing of Gram-positive bacteria including vancomycin-resistant strains.
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Affiliation(s)
- Guangxue Feng
- Department of Chemical and Biomolecular Engineering
- National University of Singapore
- Singapore 117576
- Singapore
- Environmental Research Institute
| | - Youyong Yuan
- Department of Chemical and Biomolecular Engineering
- National University of Singapore
- Singapore 117576
- Singapore
| | - Hu Fang
- Beijing National Laboratory for Molecular Sciences
- Organic Solids Laboratory
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Ruoyu Zhang
- Department of Chemical and Biomolecular Engineering
- National University of Singapore
- Singapore 117576
- Singapore
| | - Bengang Xing
- Division of Chemistry and Biological Chemistry
- Nanyang Technological University
- Singapore
- Singapore
| | - Guanxin Zhang
- Beijing National Laboratory for Molecular Sciences
- Organic Solids Laboratory
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Deqing Zhang
- Beijing National Laboratory for Molecular Sciences
- Organic Solids Laboratory
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Bin Liu
- Department of Chemical and Biomolecular Engineering
- National University of Singapore
- Singapore 117576
- Singapore
- Institute of Materials Research and Engineering
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21
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Fruth M, Plaza A, Hinsberger S, Sahner JH, Haupenthal J, Bischoff M, Jansen R, Müller R, Hartmann RW. Binding mode characterization of novel RNA polymerase inhibitors using a combined biochemical and NMR approach. ACS Chem Biol 2014; 9:2656-63. [PMID: 25207839 DOI: 10.1021/cb5005433] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Bacterial RNA polymerase (RNAP) represents a validated target for the development of broad-spectrum antibiotics. However, the medical value of RNAP inhibitors in clinical use is limited by the prevalence of resistant strains. To overcome this problem, we focused on the exploration of alternative target sites within the RNAP. Previously, we described the discovery of a novel RNAP inhibitor class containing an ureidothiophene-2-carboxylic acid core structure. Herein, we demonstrate that these compounds are potent against a set of methicillin-resistant Staphylococcus aureus (MRSA) strains (MIC 2-16 μg mL(-1)) and rifampicin-resistant Escherichia coli TolC strains (MIC 12.5-50 μg mL(-1)). Additionally, an abortive transcription assay revealed that these compounds inhibit the bacterial transcription process during the initiation phase. Furthermore, the binding mode of the ureidothiophene-2-carboxylic acids was characterized by mutagenesis studies and ligand-based NMR spectroscopy. Competition saturation transfer difference (STD) NMR experiments with the described RNAP inhibitor myxopyronin A (Myx) suggest that the ureidothiophene-2-carboxylic acids compete with Myx for the same binding site in the RNAP switch region. INPHARMA (interligand NOE for pharmacophore mapping) experiments and molecular docking simulations provided a binding model in which the ureidothiophene-2-carboxylic acids occupy the region of the Myx western chain binding site and slightly occlude that of the eastern chain. These results demonstrate that the ureidothiophene-2-carboxylic acids are a highly attractive new class of RNAP inhibitors that can avoid the problem of resistance.
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Affiliation(s)
| | | | | | | | | | - Markus Bischoff
- Institute of Medical Microbiology and Hygiene, University of Saarland Hospital, 66421 Homburg/Saar, Germany
| | - Rolf Jansen
- Department of Microbial Drugs, Helmholtz Centre for Infection Research, Inhoffenstrasse 7, 38124 Braunschweig, Germany
| | | | - Rolf W. Hartmann
- Pharmaceutical and Medicinal Chemistry, Saarland University, Campus C23, 66123 Saarbrücken, Germany
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22
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Salazar N, Castiblanco-Valencia MM, da Silva LB, de Castro ÍA, Monaris D, Masuda HP, Barbosa AS, Arêas APM. Staphylococcus aureus manganese transport protein C (MntC) is an extracellular matrix- and plasminogen-binding protein. PLoS One 2014; 9:e112730. [PMID: 25409527 PMCID: PMC4237344 DOI: 10.1371/journal.pone.0112730] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Accepted: 10/14/2014] [Indexed: 11/18/2022] Open
Abstract
Infections caused by Staphylococcus aureus – particularly nosocomial infections - represent a great concern. Usually, the early stage of pathogenesis consists on asymptomatic nasopharynx colonization, which could result in dissemination to other mucosal niches or invasion of sterile sites, such as blood. This pathogenic route depends on scavenging of nutrients as well as binding to and disrupting extracellular matrix (ECM). Manganese transport protein C (MntC), a conserved manganese-binding protein, takes part in this infectious scenario as an ion-scavenging factor and surprisingly as an ECM and coagulation cascade binding protein, as revealed in this work. This study showed a marked ability of MntC to bind to several ECM and coagulation cascade components, including laminin, collagen type IV, cellular and plasma fibronectin, plasminogen and fibrinogen by ELISA. The MntC binding to plasminogen appears to be related to the presence of surface-exposed lysines, since previous incubation with an analogue of lysine residue, ε-aminocaproic acid, or increasing ionic strength affected the interaction between MntC and plasminogen. MntC-bound plasminogen was converted to active plasmin in the presence of urokinase plasminogen activator (uPA). The newly released plasmin, in turn, acted in the cleavage of the α and β chains of fibrinogen. In conclusion, we describe a novel function for MntC that may help staphylococcal mucosal colonization and establishment of invasive disease, through the interaction with ECM and coagulation cascade host proteins. These data suggest that this potential virulence factor could be an adequate candidate to compose an anti-staphylococcal human vaccine formulation.
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Affiliation(s)
- Natália Salazar
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABCSanto André, Brazil
| | | | | | - Íris Arantes de Castro
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Denize Monaris
- Laboratório de Bacteriologia, Instituto Butantan, São Paulo, Brazil
| | - Hana Paula Masuda
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABCSanto André, Brazil
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23
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Chen W, Li Q, Zheng W, Hu F, Zhang G, Wang Z, Zhang D, Jiang X. Identification of Bacteria in Water by a Fluorescent Array. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201407606] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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24
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Chen W, Li Q, Zheng W, Hu F, Zhang G, Wang Z, Zhang D, Jiang X. Identification of Bacteria in Water by a Fluorescent Array. Angew Chem Int Ed Engl 2014; 53:13734-9. [DOI: 10.1002/anie.201407606] [Citation(s) in RCA: 129] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Indexed: 12/20/2022]
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25
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Ballhausen B, Jung P, Kriegeskorte A, Makgotlho PE, Ruffing U, von Müller L, Köck R, Peters G, Herrmann M, Ziebuhr W, Becker K, Bischoff M. LA-MRSA CC398 differ from classical community acquired-MRSA and hospital acquired-MRSA lineages: functional analysis of infection and colonization processes. Int J Med Microbiol 2014; 304:777-86. [PMID: 25034858 DOI: 10.1016/j.ijmm.2014.06.006] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
Livestock-associated methicillin-resistant Staphylococcus aureus (LA-MRSA) of the clonal complex (CC) 398 became primarily known as colonizers of livestock animals. In the past few years, they have been increasingly introduced into hospitals with subsequent emergence of human infections. However, the (re-)adaptation to the human host is only incompletely understood. This study aimed to assess virulence properties of LA-MRSA CC398 by functional modeling of infection and colonization processes. A selection of 15 human LA-MRSA CC398 isolates and 11 pig-colonizing isolates were characterized regarding their virulence capacities and compared with human isolates of hospital-acquired (HA)-MRSA (CC5, CC22 and CC45) and community-associated (CA)-MRSA (CC8, CC30 and CC80) clonal lineages. Our investigations demonstrated that LA-MRSA CC398 adhered less efficient to human cells and human/bovine plasma fibronectin than CA-MRSA and HA-MRSA isolates. In contrast, the LA-MRSA CC398 isolates revealed a high cytotoxic potential comparable to certain CA-MRSA. Comparing the most prevalent LA-MRSA CC398 spa types (t011, t034, t108), isolates associated with spa t108 showed an increased adhesive and invasive potential paired with an increased ability to evade phagocytosis. The results underline both the pathogenic potential of LA-MRSA in general and the heterogeneity within the CC398 clade regarding the virulence characteristics of CC398 subpopulations. Assuming an ongoing (re-)adaptation to the human host combined with a huge reservoir of LA-MRSA CC398 in livestock and constant zoonotic transmission, the LA-MRSA CC398 lineage has the potential to pose a serious threat to human health.
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Affiliation(s)
- Britta Ballhausen
- Institute of Medical Microbiology, University Hospital of Münster, Münster, Germany
| | - Philipp Jung
- Institute of Medical Microbiology and Hygiene, University of Saarland Hospital, Homburg/Saar, Germany
| | - André Kriegeskorte
- Institute of Medical Microbiology, University Hospital of Münster, Münster, Germany
| | | | - Ulla Ruffing
- Institute of Medical Microbiology and Hygiene, University of Saarland Hospital, Homburg/Saar, Germany
| | - Lutz von Müller
- Institute of Medical Microbiology and Hygiene, University of Saarland Hospital, Homburg/Saar, Germany
| | - Robin Köck
- Institute of Hygiene, University Hospital of Münster, Münster, Germany
| | - Georg Peters
- Institute of Medical Microbiology, University Hospital of Münster, Münster, Germany
| | - Mathias Herrmann
- Institute of Medical Microbiology and Hygiene, University of Saarland Hospital, Homburg/Saar, Germany
| | - Wilma Ziebuhr
- Institute for Molecular Infection Biology, University of Würzburg, Würzburg, Germany
| | - Karsten Becker
- Institute of Medical Microbiology, University Hospital of Münster, Münster, Germany.
| | - Markus Bischoff
- Institute of Medical Microbiology and Hygiene, University of Saarland Hospital, Homburg/Saar, Germany
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26
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Tian M, Tian Y, Li Y, Lu H, Li X, Li C, Xue F, Jin N. Microarray multiplex assay for the simultaneous detection and discrimination of influenza a and influenza B viruses. Indian J Microbiol 2013; 54:211-7. [PMID: 25320424 DOI: 10.1007/s12088-013-0432-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Accepted: 10/13/2013] [Indexed: 10/26/2022] Open
Abstract
In this study, we present a microarray approach for the typing of influenza A and B viruses, and the subtyping of H1 and H3 subtypes. We designed four pairs of specific multiplex RT-PCR primers and eight specific oligonucleotide probes and prepared microarrays to identify the specific subtype of influenza virus. Through amplification and fluorescent marking of the multiplex RT-PCR products on the M gene of influenza A and B viruses and the HA gene of subtypes H1 and H3, the PCR products were hybridized with the microarray, and the results were analyzed using a microarray scanner. The results demonstrate that the chip developed by our research institute can detect influenza A and B viruses specifically and identify the subtypes H1 and H3 at a minimum concentration of 1 × 10(2) copies/μL of viral RNA. We tested 35 clinical samples and our results were identical to other fluorescent methods. The microarray approach developed in this study provides a reliable method for the monitoring and testing of seasonal influenza.
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Affiliation(s)
- Mingyao Tian
- College of Animal Science and Veterinary Medicine, Jilin University, Changchun, 130062 People's Republic of China ; Institute of Military Veterinary, Academy of Military Medical Sciences of PLA, Liuying West Road 666, Changchun, 130122 People's Republic of China
| | - Yufei Tian
- College of Animal Science and Veterinary Medicine, Jilin University, Changchun, 130062 People's Republic of China ; Institute of Military Veterinary, Academy of Military Medical Sciences of PLA, Liuying West Road 666, Changchun, 130122 People's Republic of China
| | - Yang Li
- Department of Respiration, The First Hospital of Jilin University, Changchun, 130021 People's Republic of China
| | - Huijun Lu
- Institute of Military Veterinary, Academy of Military Medical Sciences of PLA, Liuying West Road 666, Changchun, 130122 People's Republic of China
| | - Xiao Li
- Institute of Military Veterinary, Academy of Military Medical Sciences of PLA, Liuying West Road 666, Changchun, 130122 People's Republic of China
| | - Chang Li
- Institute of Military Veterinary, Academy of Military Medical Sciences of PLA, Liuying West Road 666, Changchun, 130122 People's Republic of China
| | - Fei Xue
- Institute of Military Veterinary, Academy of Military Medical Sciences of PLA, Liuying West Road 666, Changchun, 130122 People's Republic of China
| | - Ningyi Jin
- Institute of Military Veterinary, Academy of Military Medical Sciences of PLA, Liuying West Road 666, Changchun, 130122 People's Republic of China
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