Comparative Susceptibility of Madin–Darby Canine Kidney (MDCK) Derived Cell Lines for Isolation of Swine Origin Influenza A Viruses from Different Clinical Specimens

Madin–Darby canine kidney (MDCK) cells are commonly used for the isolation of mammalian influenza A viruses. The goal of this study was to compare the sensitivity and suitability of the original MDCK cell line in comparison with MDCK-derived cell lines, MDCK.2, MDCK SIAT-1 and MDCK-London for isolat...

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Main Authors: Matthew Suderman, Mariko Moniwa, Tamiru N. Alkie, Davor Ojkic, Andre Broes, Neil Pople, Yohannes Berhane
Format: Article
Language:English
Published: MDPI AG 2021-11-01
Series:Viruses
Subjects:
Online Access:https://www.mdpi.com/1999-4915/13/12/2346
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author Matthew Suderman
Mariko Moniwa
Tamiru N. Alkie
Davor Ojkic
Andre Broes
Neil Pople
Yohannes Berhane
author_facet Matthew Suderman
Mariko Moniwa
Tamiru N. Alkie
Davor Ojkic
Andre Broes
Neil Pople
Yohannes Berhane
author_sort Matthew Suderman
collection DOAJ
description Madin–Darby canine kidney (MDCK) cells are commonly used for the isolation of mammalian influenza A viruses. The goal of this study was to compare the sensitivity and suitability of the original MDCK cell line in comparison with MDCK-derived cell lines, MDCK.2, MDCK SIAT-1 and MDCK-London for isolation of swine-origin influenza A viruses (IAV-S) from clinical specimens. One-hundred thirty clinical specimens collected from pigs in the form of nasal swabs, lung tissue and oral fluids that were positive by PCR for the presence of IAV-S RNA were inoculated in the cell cultures listed above. MDCK-SIAT1 cells yielded the highest proportion of positive IAV-S isolations from all specimen types. For nasal swabs, 58.62% of the specimens were IAV-S positive in MDCK-SIAT1 cells, followed by MDCK-London (36.21%), and conventional MDCK and MDCK.2 cells (27.5%). For lung specimens, 59.38% were IAV-S positive in MDCK-SIAT1 cells, followed by MDCK-London (40.63%), and conventional MDCK and MDCK.2 cells (18.75–31.25%). Oral fluids yielded the lowest number of positive virus isolation results, but MDCK-SIAT1 cells were still had the highest rate (35%) of IAV-S isolation, whereas the isolation rate in other cells ranged from 5–7.5%. Samples with lower IAV-S PCR cycle threshold (Ct) values were more suitable for culturing and isolation. The isolated IAV-S represented H1N1-β, H1N2-α, H1N1pdm and H3N2 cluster IV and cluster IVB viruses. The result of the current study demonstrated the importance of using the most appropriate MDCK cells when isolating IAV-S from clinical samples.
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spelling doaj.art-f71611909b02442b86bc619284ce71ec2023-11-23T10:56:35ZengMDPI AGViruses1999-49152021-11-011312234610.3390/v13122346Comparative Susceptibility of Madin–Darby Canine Kidney (MDCK) Derived Cell Lines for Isolation of Swine Origin Influenza A Viruses from Different Clinical SpecimensMatthew Suderman0Mariko Moniwa1Tamiru N. Alkie2Davor Ojkic3Andre Broes4Neil Pople5Yohannes Berhane6National Centre for Foreign Animal Disease, Canadian Food Inspection Agency, Winnipeg, MB R3E 3R2, CanadaNational Centre for Foreign Animal Disease, Canadian Food Inspection Agency, Winnipeg, MB R3E 3R2, CanadaNational Centre for Foreign Animal Disease, Canadian Food Inspection Agency, Winnipeg, MB R3E 3R2, CanadaAnimal Health Laboratory, University of Guelph, Guelph, ON N1G 2W1, CanadaBiovet Inc., Saint-Hyacinthe, QC J2S 8W2, CanadaVeterinary Diagnostic Services, Manitoba Agriculture and Resource Development, 545 University Crescent, Winnipeg, MB R3T 5S6, CanadaNational Centre for Foreign Animal Disease, Canadian Food Inspection Agency, Winnipeg, MB R3E 3R2, CanadaMadin–Darby canine kidney (MDCK) cells are commonly used for the isolation of mammalian influenza A viruses. The goal of this study was to compare the sensitivity and suitability of the original MDCK cell line in comparison with MDCK-derived cell lines, MDCK.2, MDCK SIAT-1 and MDCK-London for isolation of swine-origin influenza A viruses (IAV-S) from clinical specimens. One-hundred thirty clinical specimens collected from pigs in the form of nasal swabs, lung tissue and oral fluids that were positive by PCR for the presence of IAV-S RNA were inoculated in the cell cultures listed above. MDCK-SIAT1 cells yielded the highest proportion of positive IAV-S isolations from all specimen types. For nasal swabs, 58.62% of the specimens were IAV-S positive in MDCK-SIAT1 cells, followed by MDCK-London (36.21%), and conventional MDCK and MDCK.2 cells (27.5%). For lung specimens, 59.38% were IAV-S positive in MDCK-SIAT1 cells, followed by MDCK-London (40.63%), and conventional MDCK and MDCK.2 cells (18.75–31.25%). Oral fluids yielded the lowest number of positive virus isolation results, but MDCK-SIAT1 cells were still had the highest rate (35%) of IAV-S isolation, whereas the isolation rate in other cells ranged from 5–7.5%. Samples with lower IAV-S PCR cycle threshold (Ct) values were more suitable for culturing and isolation. The isolated IAV-S represented H1N1-β, H1N2-α, H1N1pdm and H3N2 cluster IV and cluster IVB viruses. The result of the current study demonstrated the importance of using the most appropriate MDCK cells when isolating IAV-S from clinical samples.https://www.mdpi.com/1999-4915/13/12/2346Madin–Darby canine kidney (MDCK) cellsvirus isolationswine influenzanasal swabsoral fluids
spellingShingle Matthew Suderman
Mariko Moniwa
Tamiru N. Alkie
Davor Ojkic
Andre Broes
Neil Pople
Yohannes Berhane
Comparative Susceptibility of Madin–Darby Canine Kidney (MDCK) Derived Cell Lines for Isolation of Swine Origin Influenza A Viruses from Different Clinical Specimens
Viruses
Madin–Darby canine kidney (MDCK) cells
virus isolation
swine influenza
nasal swabs
oral fluids
title Comparative Susceptibility of Madin–Darby Canine Kidney (MDCK) Derived Cell Lines for Isolation of Swine Origin Influenza A Viruses from Different Clinical Specimens
title_full Comparative Susceptibility of Madin–Darby Canine Kidney (MDCK) Derived Cell Lines for Isolation of Swine Origin Influenza A Viruses from Different Clinical Specimens
title_fullStr Comparative Susceptibility of Madin–Darby Canine Kidney (MDCK) Derived Cell Lines for Isolation of Swine Origin Influenza A Viruses from Different Clinical Specimens
title_full_unstemmed Comparative Susceptibility of Madin–Darby Canine Kidney (MDCK) Derived Cell Lines for Isolation of Swine Origin Influenza A Viruses from Different Clinical Specimens
title_short Comparative Susceptibility of Madin–Darby Canine Kidney (MDCK) Derived Cell Lines for Isolation of Swine Origin Influenza A Viruses from Different Clinical Specimens
title_sort comparative susceptibility of madin darby canine kidney mdck derived cell lines for isolation of swine origin influenza a viruses from different clinical specimens
topic Madin–Darby canine kidney (MDCK) cells
virus isolation
swine influenza
nasal swabs
oral fluids
url https://www.mdpi.com/1999-4915/13/12/2346
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