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Teng JLL, Fong JYH, Fok KMN, Lee HH, Chiu TH, Tang Y, Ngan AHY, Wong SSY, Que TL, Lau SKP, Woo PCY. Tsukamurella asaccharolytica sp. nov., Tsukamurella conjunctivitidis sp. nov. and Tsukamurella sputi sp. nov., isolated from patients with bacteraemia, conjunctivitis and respiratory infection in Hong Kong. Int J Syst Evol Microbiol 2020; 70:995-1006. [PMID: 31738158 DOI: 10.1099/ijsem.0.003861] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Three bacterial strains, HKU70T, HKU71T and HKU72T, were isolated from the conjunctival swab, blood and sputum samples of three patients with conjunctivitis, bacteraemia and respiratory infection, respectively, in Hong Kong. The three strains were aerobic, Gram-stain positive, catalase-positive, non-sporulating and non-motile bacilli and exhibited unique biochemical profiles distinguishable from currently recognized Tsukamurella species. 16S rRNA, secA, rpoB and groEL gene sequence analyses revealed that the three strains shared 99.6-99.9, 94.5-96.8, 95.7-97.8 and 97.7-98.9 % nucleotide identities with their corresponding closest Tsukamurella species respectively. DNA-DNA hybridization confirmed that they were distinct from other known species of the genus Tsukamurella (26.2±2.4 to 36.8±1.2 % DNA-DNA relatedness), in line with results of in silico genome-to-genome comparison (32.2-40.9 % Genome-to-Genome Distance Calculator and 86.3-88.9 % average nucleotide identity values]. Fatty acids, mycolic acids, cell-wall sugars and peptidoglycan analyses showed that they were typical of members of Tsukamurella. The G+C content determined based on the genome sequence of strains HKU70T, HKU71T and HKU72T were 69.9, 70.2 and 70.5 mol%, respectively. Taken together, our results supported the proposition and description of three new species, i.e. Tsukamurella sputi HKU70T (=JCM 33387T=DSM 109106T) sp. nov., Tsukamurella asaccharolytica HKU71T (=JCM 33388T=DSM 109107T) sp. nov. and Tsukamurella conjunctivitidis HKU72T (=JCM 33389T=DSM 109108T) sp. nov.
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Affiliation(s)
- Jade L L Teng
- State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, Hong Kong, PR China.,Carol Yu Centre for Infection, The University of Hong Kong, Hong Kong, PR China.,Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China
| | - Jordan Y H Fong
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China
| | - Kenny M N Fok
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China
| | - Hwei Huih Lee
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China
| | - Tsz Ho Chiu
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China
| | - Ying Tang
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China
| | - Antonio H Y Ngan
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China
| | - Samson S Y Wong
- State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, Hong Kong, PR China.,Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China.,Carol Yu Centre for Infection, The University of Hong Kong, Hong Kong, PR China
| | - Tak-Lun Que
- Department of Pathology, Tuen Mun Hospital, Hong Kong, PR China
| | - Susanna K P Lau
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China.,Carol Yu Centre for Infection, The University of Hong Kong, Hong Kong, PR China.,State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, Hong Kong, PR China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The University of Hong Kong, Hong Kong, PR China
| | - Patrick C Y Woo
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China.,Carol Yu Centre for Infection, The University of Hong Kong, Hong Kong, PR China.,State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, Hong Kong, PR China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The University of Hong Kong, Hong Kong, PR China
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The actinobacterium Tsukamurella paurometabola has a functionally divergent arylamine N-acetyltransferase (NAT) homolog. World J Microbiol Biotechnol 2019; 35:174. [PMID: 31673919 DOI: 10.1007/s11274-019-2755-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Accepted: 10/24/2019] [Indexed: 12/23/2022]
Abstract
Actinobacteria in the Tsukamurella genus are aerobic, high-GC, Gram-positive mycolata, considered as opportunistic pathogens and isolated from various environmental sources, including sites contaminated with oil, urban or industrial waste and pesticides. Although studies look into xenobiotic biotransformation by Tsukamurella isolates, the relevant enzymes remain uncharacterized. We investigated the arylamine N-acetyltransferase (NAT) enzyme family, known for its role in the xenobiotic metabolism of prokaryotes and eukaryotes. Xenobiotic sensitivity of Tsukamurella paurometabola type strain DSM 20162T was assessed, followed by cloning, recombinant expression and functional characterization of its single NAT homolog (TSUPD)NAT1. The bacterium appeared quite robust against chloroanilines, but more sensitive to 4-anisidine and 2-aminophenol. However, metabolic activity was not evident towards those compounds, presumably due to mechanisms protecting cells from xenobiotic entry. Of the pharmaceutical arylhydrazines tested, hydralazine was toxic, but the bacterium was less sensitive to isoniazid, a drug targeting mycolic acid biosynthesis in mycobacteria. Although (TSUPD)NAT1 protein has an atypical Cys-His-Glu (instead of the expected Cys-His-Asp) catalytic triad, it is enzymatically active, suggesting that this deviation is likely due to evolutionary adaptation potentially serving a different function. The protein was indeed found to use malonyl-CoA, instead of the archetypal acetyl-CoA, as its preferred donor substrate. Malonyl-CoA is important for microbial biosynthesis of fatty acids (including mycolic acids) and polyketide chains, and the corresponding enzymatic systems have common evolutionary histories, also linked to xenobiotic metabolism. This study adds to accummulating evidence suggesting broad phylogenetic and functional divergence of microbial NAT enzymes that goes beyond xenobiotic metabolism and merits investigation.
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Saeed A, Paściak M, Górska S, Ceremuga I, Gamian E, Ziółkowski P, Drab M, Gamian A. Structural elucidation of Tsukamurella pulmonis neutral polysaccharide and its visualization in infected mouse tissues by specific monoclonal antibodies. Sci Rep 2018; 8:11564. [PMID: 30068922 PMCID: PMC6070502 DOI: 10.1038/s41598-018-29864-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 07/19/2018] [Indexed: 11/09/2022] Open
Abstract
Tsukamurella pulmonis is an opportunistic actinomycetal pathogen associated with a variety of rarely diagnosed human infections. In clinical cases of infection, T. pulmonis usually accompanies other bacterial pathogens. Because of these mixed infections, a robust diagnostic assay is important. The bacteria cell surface polysaccharides are considered not only useful targets for diagnostics but also intriguing subjects for analysis of the interactions that regulate the host response in general. Here, the structure of the polysaccharide component of the T. pulmonis cell wall was established. Sugar and methylation analysis and 2D-NMR techniques revealed that its polysaccharide belongs to the class of arabinomannan composed of branched tetrasaccharide repeating units, with addition of linear →6)-α-D-Manp-(1→ mannan. Rabbit polyclonal sera against T. pulmonis and T. paurometabola bacterial cells revealed cross reactivity between their antigens. Tissue samples from mice infected with T. pulmonis revealed liver abscesses and pathologic granules located intracellularly when immunohistochemically stained with monoclonal antibodies raised against T. pulmonis polysaccharide. Ultrastructural studies revealed that these granules contain T. pulmonis cells. These observations indicate that T. pulmonis is a pathogenic species capable of spreading within the organism, presumably through the blood.
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Affiliation(s)
- Adnan Saeed
- Department of Immunology of Infectious Diseases, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114, Wroclaw, Poland
| | - Mariola Paściak
- Department of Immunology of Infectious Diseases, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114, Wroclaw, Poland.
| | - Sabina Górska
- Department of Immunology of Infectious Diseases, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114, Wroclaw, Poland
| | - Ireneusz Ceremuga
- Department of Medical Biochemistry, Wroclaw Medical University, Chałubińskiego 10, 50-368, Wroclaw, Poland
| | - Elżbieta Gamian
- Department of Pathology, Wrocław Medical University, Marcinkowskiego 1, 50-368, Wrocław, Poland
| | - Piotr Ziółkowski
- Department of Pathology, Wrocław Medical University, Marcinkowskiego 1, 50-368, Wrocław, Poland
| | - Marek Drab
- Department of Immunology of Infectious Diseases, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114, Wroclaw, Poland
- USI, Unit of Nanostructural Bio-Interactions, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114, Wroclaw, Poland
| | - Andrzej Gamian
- Department of Immunology of Infectious Diseases, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114, Wroclaw, Poland
- Wrocław Research Center EIT+, Stablowicka 147, 54-066, Wrocław, Poland
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Role of Tsukamurella species in human infections: first literature review. New Microbes New Infect 2017; 22:6-12. [PMID: 29556401 PMCID: PMC5857166 DOI: 10.1016/j.nmni.2017.10.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 09/25/2017] [Accepted: 10/04/2017] [Indexed: 12/11/2022] Open
Abstract
Tsukamurella is an aerobic, Gram-positive and nonmotile bacterium. It was first isolated in 1941 from the mycetoma and ovaries of the bedbug. The primary strains were named Corynebacterium paurometabolum and Gordona aurantiaca and are different from the Collins et al., 1988 classification of the new Tsukamurella genus. Human infections with Tsukamurella species are rare because the species is a kind of saprophyte bacterium; however, most information regarding this species comes from case reports. Molecular markers for the identification Tsukamurella include sequencing of 16S rRNA, groEL, rpoB, secA1 and ssrA genes. Given the lack of information on the treatment of Tsukamurella infections, a combination of various antibiotic agents is recommended.
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Tang Y, Teng JLL, Cheung CLW, Ngan AHY, Huang Y, Wong SSY, Yip EKT, Ng KHL, Que TL, Lau SKP, Woo PCY. Tsukamurella serpentis sp. nov., isolated from the oral cavity of Chinese cobras (Naja atra). Int J Syst Evol Microbiol 2016; 66:3329-3336. [PMID: 27257031 DOI: 10.1099/ijsem.0.001187] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Two bacterial strains, HKU54T and HKU55, were isolated from the oral cavity of two Chinese cobras (Naja atra) in Hong Kong. 16S rRNA gene sequence analysis revealed 100 % sequence identity between HKU54T and HKU55, and the two strains shared 99.0 % sequence identities with Tsukamurella inchonensis ATCC 700082T. The two strains had unique biochemical profiles distinguishable from closely related species of the genus Tsukamurella. DNA-DNA hybridization confirmed that they belonged to the same species (≥92.1±7.9 % DNA-DNA relatedness) but were distinct from all other known species of the genus Tsukamurella (≤52.6±5.3 % DNA-DNA relatedness). Chemotaxonomic and morphological analyses of the two strains also demonstrated results consistent with their classification in the genus Tsukamurella. The DNA G+C contents of strains HKU54T and HKU55 were 69.2±1.5 mol% and 69.2±1.3 mol% (mean±sd; n=3) respectively. A novel species, Tsukamurella serpentis sp. nov., is proposed to accommodate strains HKU54T and HKU55, with HKU54T (=JCM 31017T=DSM 100915T) designated as the type strain.
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Affiliation(s)
- Ying Tang
- Department of Microbiology, The University of Hong Kong, Hong Kong Special Administrative Region, PR China
| | - Jade L L Teng
- State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, Hong Kong Special Administrative Region, PR China.,Research Centre of Infection and Immunology, The University of Hong Kong, Hong Kong Special Administrative Region, PR China.,Department of Microbiology, The University of Hong Kong, Hong Kong Special Administrative Region, PR China.,Carol Yu Centre for Infection, The University of Hong Kong, Hong Kong Special Administrative Region, PR China
| | - Candy L W Cheung
- Department of Microbiology, The University of Hong Kong, Hong Kong Special Administrative Region, PR China
| | - Antonio H Y Ngan
- Department of Microbiology, The University of Hong Kong, Hong Kong Special Administrative Region, PR China
| | - Yi Huang
- Department of Microbiology, The University of Hong Kong, Hong Kong Special Administrative Region, PR China
| | - Samson S Y Wong
- Carol Yu Centre for Infection, The University of Hong Kong, Hong Kong Special Administrative Region, PR China.,Research Centre of Infection and Immunology, The University of Hong Kong, Hong Kong Special Administrative Region, PR China.,State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, Hong Kong Special Administrative Region, PR China.,Department of Microbiology, The University of Hong Kong, Hong Kong Special Administrative Region, PR China
| | - Eric K T Yip
- Department of Pathology, Tuen Mun Hospital, Hong Kong Special Administrative Region, PR China
| | - Kenneth H L Ng
- Department of Pathology, Tuen Mun Hospital, Hong Kong Special Administrative Region, PR China
| | - Tak-Lun Que
- Department of Pathology, Tuen Mun Hospital, Hong Kong Special Administrative Region, PR China
| | - Susanna K P Lau
- Carol Yu Centre for Infection, The University of Hong Kong, Hong Kong Special Administrative Region, PR China.,State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, Hong Kong Special Administrative Region, PR China.,Research Centre of Infection and Immunology, The University of Hong Kong, Hong Kong Special Administrative Region, PR China.,Department of Microbiology, The University of Hong Kong, Hong Kong Special Administrative Region, PR China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The University of Hong Kong, Hong Kong Special Administrative Region, PR China
| | - Patrick C Y Woo
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The University of Hong Kong, Hong Kong Special Administrative Region, PR China.,State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, Hong Kong Special Administrative Region, PR China.,Research Centre of Infection and Immunology, The University of Hong Kong, Hong Kong Special Administrative Region, PR China.,Department of Microbiology, The University of Hong Kong, Hong Kong Special Administrative Region, PR China.,Carol Yu Centre for Infection, The University of Hong Kong, Hong Kong Special Administrative Region, PR China
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Ochi F, Tauchi H, Moritani K, Miyamoto H, Ohkusu K, Ishii E. Tsukamurella inchonensis infection in a child with Hodgkin's lymphoma. Pediatr Int 2015; 57:e7-10. [PMID: 25711272 DOI: 10.1111/ped.12472] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Revised: 07/16/2014] [Accepted: 07/29/2014] [Indexed: 11/30/2022]
Abstract
Tsukamurella spp. infection is a rare but important cause of bacteremia in immunocompromised patients. The organism is an aerobic, Gram-positive, weakly acid-fast bacillus that is difficult to differentiate from other aerobic Actinomycetales by standard laboratory methods. Here, we report on the case of a 14-year-old patient with Hodgkin's lymphoma who, after intensive chemotherapy, developed Tsukamurella inchonensis bacteremia, which was identified on the peripherally inserted central venous catheter (PICC) using 16S rRNA sequencing analysis. The bacteremia was successfully controlled with antimicrobial therapy and subsequent removal of the PICC. This is the first report of bacteremia by Tsukamurella inchonensis in immunocompromised children. Careful observation and prompt analysis of opportunistic infection, including Tsukamurella spp., is very important in immunocompromised children.
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Affiliation(s)
- Fumihiro Ochi
- Department of Pediatrics, Ehime University Graduate School of Medicine, Ehime, Japan
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Chen CL, Qi W, Wang JY. Microbial cocktail for bioconversion of green waste to reducing sugars. J Biosci Bioeng 2012; 115:82-5. [PMID: 23020894 DOI: 10.1016/j.jbiosc.2012.08.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2012] [Revised: 08/13/2012] [Accepted: 08/19/2012] [Indexed: 10/27/2022]
Abstract
Green waste has been identified as a sustainable resource to convert into reducing sugars and subsequently for production of ethanol. In this study, enhancement of reducing sugar production from green waste by the different combination of pure strains was investigated. The best-defined microbial cocktail for high reducing sugars production, consisting of one fungus (Pseudallescheria sp. D42) and three bacteria (Microbacterium sp. F28, Tsukamurella sp. C35, and Bacillus sp. F4), was successfully constructed. The maximum reducing sugars yield by this fungal-bacterial cocktail was 165.2 mg/g-green waste within 24 h, which is approximate 10 times higher than the selected individual microbial strains. Without extraction and purification of specific enzymes, whole-cell-bioconversion by a defined microbial cocktail is proven as a potential alternative process for lignocellulose hydrolysis and reducing sugars production.
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Affiliation(s)
- Chia-Lung Chen
- Residues and Resource Reclamation Centre, Nanyang Environment and Water Research Institute, #06-08 CleanTech One, 1 Cleantech Loop, Singapore 637141, Singapore.
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Improved identification of Gordonia, Rhodococcus and Tsukamurella species by 5'-end 16S rRNA gene sequencing. Pathology 2011; 43:58-63. [PMID: 21240067 DOI: 10.1097/pat.0b013e328340e431] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES The identification of fastidious aerobic Actinomycetes such as Gordonia, Rhodococcus, and Tsukamurella has remained a challenge leading to clinically significant misclassifications. This study is intended to examine the feasibility of partial 5'-end 16S rRNA gene sequencing for the identification of Gordonia, Rhodococcus, and Tsukamurella, and defined potential reference sequences for species from each of these genera. METHODS The 16S rRNA gene sequence based identification algorithm for species identification was used and enhanced by aligning test sequences with reference sequences from the List of Prokaryotic Names with Standing in Nomenclature. RESULTS Conventional PCR based 16S rRNA gene sequencing and the alignment of the isolate 16S rRNA gene sequence with reference sequences accurately identified 100% of clinical strains of aerobic Actinomycetes. While partial 16S rRNA gene sequences of reference type strains matched with the 16S rRNA gene sequences of 19 isolates in our data set, another 13 strains demonstrated a degree of polymorphism with a 1-4 bp difference in the regions of difference. CONCLUSIONS 5'-end 606 bp 16S rRNA gene sequencing, coupled with the assignment of well defined reference sequences to clinically relevant species of bacteria, can be a useful strategy for improving the identification of clinically relevant aerobic Actinomycetes.
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Qi W, Chen CL, Wang JY. Reducing Sugar-Producing Bacteria from Guts of Tenebrio Molitor Linnaeus (Yellow mealworm) for Lignocellulosic Waste Minimization. Microbes Environ 2011; 26:354-9. [DOI: 10.1264/jsme2.me11129] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Wei Qi
- School of Civil and Environmental Engineering, Nanyang Technological University
| | - Chia-Lung Chen
- Residues and Resource Reclamation Centre (R3C), Nanyang Technological University
| | - Jing-Yuan Wang
- School of Civil and Environmental Engineering, Nanyang Technological University
- Residues and Resource Reclamation Centre (R3C), Nanyang Technological University
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