Innate immune response in bovine neutrophils stimulated with Mycoplasma bovis

Abstract Mycoplasma bovis (M. bovis) is a significant worldwide pathogen of cattle. Neutrophils have an important role in the innate immune response during infection with M. bovis. However, even though neutrophils accumulate in M. bovis infection, the interaction of M. bovis and neutrophils has not...

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Main Authors: Satoshi Gondaira, Koji Nishi, Jumpei Fujiki, Hidetomo Iwano, Reina Watanabe, Ayako Eguchi, Yuki Hirano, Hidetoshi Higuchi, Hajime Nagahata
Format: Article
Language:English
Published: BMC 2021-04-01
Series:Veterinary Research
Subjects:
Online Access:https://doi.org/10.1186/s13567-021-00920-2
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author Satoshi Gondaira
Koji Nishi
Jumpei Fujiki
Hidetomo Iwano
Reina Watanabe
Ayako Eguchi
Yuki Hirano
Hidetoshi Higuchi
Hajime Nagahata
author_facet Satoshi Gondaira
Koji Nishi
Jumpei Fujiki
Hidetomo Iwano
Reina Watanabe
Ayako Eguchi
Yuki Hirano
Hidetoshi Higuchi
Hajime Nagahata
author_sort Satoshi Gondaira
collection DOAJ
description Abstract Mycoplasma bovis (M. bovis) is a significant worldwide pathogen of cattle. Neutrophils have an important role in the innate immune response during infection with M. bovis. However, even though neutrophils accumulate in M. bovis infection, the interaction of M. bovis and neutrophils has not been fully elucidated. We attempted to elucidate the innate immune response of neutrophils stimulated with M. bovis and evaluate the transcriptome and functional analysis of bovine neutrophils stimulated with M. bovis. Proinflammatory cytokines, such as inducible nitric oxide (iNOS), which was the most increased gene in transcriptome analysis, were increased in quantitative polymerase chain reaction analysis of bovine neutrophils stimulated with live or heat-killed M. bovis. Nitric oxide and intracellular reactive oxygen species production of neutrophils stimulated with M. bovis was significantly increased. Neutrophils stimulated with M. bovis showed an increased ratio of nonapoptotic cell death compared to unstimulated controls. We demonstrated that neutrophil extracellular traps (NETs) formation was not recognized in neutrophils stimulated with live M. bovis. However, heat-killed M. bovis induced NETs formation. We also showed the interaction with M. bovis and bovine neutrophils regarding proinflammatory cytokine gene expression and functional expression related to NETs formation. Live and killed M. bovis induced innate immune responses in neutrophils and had the potential to induce NETs formation, but live M. bovis escaped NETs.
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spelling doaj.art-8ddcb3337aa141579beedb5632bd70792022-12-21T22:45:23ZengBMCVeterinary Research1297-97162021-04-0152111110.1186/s13567-021-00920-2Innate immune response in bovine neutrophils stimulated with Mycoplasma bovisSatoshi Gondaira0Koji Nishi1Jumpei Fujiki2Hidetomo Iwano3Reina Watanabe4Ayako Eguchi5Yuki Hirano6Hidetoshi Higuchi7Hajime Nagahata8Animal Health Laboratory, Department of Veterinary Medicine, School of Veterinary Medicine, Rakuno Gakuen UniversityAnimal Health Laboratory, Department of Veterinary Medicine, School of Veterinary Medicine, Rakuno Gakuen UniversityVeterinary Biochemistry, Department of Veterinary Medicine, School of Veterinary Medicine, Rakuno Gakuen UniversityVeterinary Biochemistry, Department of Veterinary Medicine, School of Veterinary Medicine, Rakuno Gakuen UniversityAnimal Health Laboratory, Department of Veterinary Medicine, School of Veterinary Medicine, Rakuno Gakuen UniversityAnimal Health Laboratory, Department of Veterinary Medicine, School of Veterinary Medicine, Rakuno Gakuen UniversityAnimal Research Center, Agricultural Research Department, Hokkaido Research OrganizationAnimal Health Laboratory, Department of Veterinary Medicine, School of Veterinary Medicine, Rakuno Gakuen UniversityAnimal Health Laboratory, Department of Veterinary Medicine, School of Veterinary Medicine, Rakuno Gakuen UniversityAbstract Mycoplasma bovis (M. bovis) is a significant worldwide pathogen of cattle. Neutrophils have an important role in the innate immune response during infection with M. bovis. However, even though neutrophils accumulate in M. bovis infection, the interaction of M. bovis and neutrophils has not been fully elucidated. We attempted to elucidate the innate immune response of neutrophils stimulated with M. bovis and evaluate the transcriptome and functional analysis of bovine neutrophils stimulated with M. bovis. Proinflammatory cytokines, such as inducible nitric oxide (iNOS), which was the most increased gene in transcriptome analysis, were increased in quantitative polymerase chain reaction analysis of bovine neutrophils stimulated with live or heat-killed M. bovis. Nitric oxide and intracellular reactive oxygen species production of neutrophils stimulated with M. bovis was significantly increased. Neutrophils stimulated with M. bovis showed an increased ratio of nonapoptotic cell death compared to unstimulated controls. We demonstrated that neutrophil extracellular traps (NETs) formation was not recognized in neutrophils stimulated with live M. bovis. However, heat-killed M. bovis induced NETs formation. We also showed the interaction with M. bovis and bovine neutrophils regarding proinflammatory cytokine gene expression and functional expression related to NETs formation. Live and killed M. bovis induced innate immune responses in neutrophils and had the potential to induce NETs formation, but live M. bovis escaped NETs.https://doi.org/10.1186/s13567-021-00920-2Mycoplasma bovisBovineNeutrophilsInnate immuneTranscriptome analysis
spellingShingle Satoshi Gondaira
Koji Nishi
Jumpei Fujiki
Hidetomo Iwano
Reina Watanabe
Ayako Eguchi
Yuki Hirano
Hidetoshi Higuchi
Hajime Nagahata
Innate immune response in bovine neutrophils stimulated with Mycoplasma bovis
Veterinary Research
Mycoplasma bovis
Bovine
Neutrophils
Innate immune
Transcriptome analysis
title Innate immune response in bovine neutrophils stimulated with Mycoplasma bovis
title_full Innate immune response in bovine neutrophils stimulated with Mycoplasma bovis
title_fullStr Innate immune response in bovine neutrophils stimulated with Mycoplasma bovis
title_full_unstemmed Innate immune response in bovine neutrophils stimulated with Mycoplasma bovis
title_short Innate immune response in bovine neutrophils stimulated with Mycoplasma bovis
title_sort innate immune response in bovine neutrophils stimulated with mycoplasma bovis
topic Mycoplasma bovis
Bovine
Neutrophils
Innate immune
Transcriptome analysis
url https://doi.org/10.1186/s13567-021-00920-2
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