Single-cell transcriptomics of bronchoalveolar lavage during PRRSV infection with different virulence

Abstract Porcine reproductive and respiratory syndrome virus (PRRSV) causes significant economic losses in the global swine industry due to its high genetic diversity and different virulence levels, which complicate disease management and vaccine development. This study evaluated longitudinal change...

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Main Authors: Byeonghwi Lim, Seung-Chai Kim, Hwan-Ju Kim, Jae-Hwan Kim, Young-Jun Seo, Chiwoong Lim, Yejee Park, Sunirmal Sheet, Dahye Kim, Do-Hwan Lim, Kyeongsoon Park, Kyung-Tai Lee, Won-Il Kim, Jun-Mo Kim
Format: Article
Language:English
Published: Nature Portfolio 2025-01-01
Series:Nature Communications
Online Access:https://doi.org/10.1038/s41467-024-54676-2
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author Byeonghwi Lim
Seung-Chai Kim
Hwan-Ju Kim
Jae-Hwan Kim
Young-Jun Seo
Chiwoong Lim
Yejee Park
Sunirmal Sheet
Dahye Kim
Do-Hwan Lim
Kyeongsoon Park
Kyung-Tai Lee
Won-Il Kim
Jun-Mo Kim
author_facet Byeonghwi Lim
Seung-Chai Kim
Hwan-Ju Kim
Jae-Hwan Kim
Young-Jun Seo
Chiwoong Lim
Yejee Park
Sunirmal Sheet
Dahye Kim
Do-Hwan Lim
Kyeongsoon Park
Kyung-Tai Lee
Won-Il Kim
Jun-Mo Kim
author_sort Byeonghwi Lim
collection DOAJ
description Abstract Porcine reproductive and respiratory syndrome virus (PRRSV) causes significant economic losses in the global swine industry due to its high genetic diversity and different virulence levels, which complicate disease management and vaccine development. This study evaluated longitudinal changes in the immune cell composition of bronchoalveolar lavage fluid and the clinical outcomes across PRRSV strains with varying virulence, using techniques including single-cell transcriptomics. In highly virulent infection, faster viral replication results in an earlier peak lung-damage time point, marked by significant interstitial pneumonia, a significant decrease in macrophages, and an influx of lymphocytes. Viral tracking reveals less than 5% of macrophages are directly infected, and further analysis indicates bystander cell death, likely regulated by exosomal microRNAs as a significant factor. In contrast, the peak intermediate infection shows a delayed lung-damage time point with fewer cell population modifications. Furthermore, anti-inflammatory M2-like macrophages (SPP1-CXCL14high) are identified and their counts increase during the peak lung-damage time point, likely contributing to local defense and lung recovery, which is not observed in high virulent infection. These findings provide a comprehensive description of the immune cellular landscape and differential PRRSV virulence mechanisms, which will help build new hypotheses to understand PRRSV pathogenesis and other respiratory infections.
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spelling doaj-art-3ce0d3932cbe451ba3a0198c6eb08d902025-02-02T12:32:36ZengNature PortfolioNature Communications2041-17232025-01-0116112210.1038/s41467-024-54676-2Single-cell transcriptomics of bronchoalveolar lavage during PRRSV infection with different virulenceByeonghwi Lim0Seung-Chai Kim1Hwan-Ju Kim2Jae-Hwan Kim3Young-Jun Seo4Chiwoong Lim5Yejee Park6Sunirmal Sheet7Dahye Kim8Do-Hwan Lim9Kyeongsoon Park10Kyung-Tai Lee11Won-Il Kim12Jun-Mo Kim13Functional Genomics & Bioinformatics Laboratory, Department of Animal Science and Technology, Chung-Ang UniversityCollege of Veterinary Medicine, Jeonbuk National UniversityCollege of Veterinary Medicine, Jeonbuk National UniversityAnimal Genomics and Bioinformatics Division, National Institute of Animal Science, RDAFunctional Genomics & Bioinformatics Laboratory, Department of Animal Science and Technology, Chung-Ang UniversityFunctional Genomics & Bioinformatics Laboratory, Department of Animal Science and Technology, Chung-Ang UniversityAnimal Genomics and Bioinformatics Division, National Institute of Animal Science, RDAAnimal Genomics and Bioinformatics Division, National Institute of Animal Science, RDAAnimal Genomics and Bioinformatics Division, National Institute of Animal Science, RDASchool of Systems Biomedical Science, Soongsil UniversityDepartment of Systems Biotechnology, Chung-Ang UniversityAnimal Genomics and Bioinformatics Division, National Institute of Animal Science, RDACollege of Veterinary Medicine, Jeonbuk National UniversityFunctional Genomics & Bioinformatics Laboratory, Department of Animal Science and Technology, Chung-Ang UniversityAbstract Porcine reproductive and respiratory syndrome virus (PRRSV) causes significant economic losses in the global swine industry due to its high genetic diversity and different virulence levels, which complicate disease management and vaccine development. This study evaluated longitudinal changes in the immune cell composition of bronchoalveolar lavage fluid and the clinical outcomes across PRRSV strains with varying virulence, using techniques including single-cell transcriptomics. In highly virulent infection, faster viral replication results in an earlier peak lung-damage time point, marked by significant interstitial pneumonia, a significant decrease in macrophages, and an influx of lymphocytes. Viral tracking reveals less than 5% of macrophages are directly infected, and further analysis indicates bystander cell death, likely regulated by exosomal microRNAs as a significant factor. In contrast, the peak intermediate infection shows a delayed lung-damage time point with fewer cell population modifications. Furthermore, anti-inflammatory M2-like macrophages (SPP1-CXCL14high) are identified and their counts increase during the peak lung-damage time point, likely contributing to local defense and lung recovery, which is not observed in high virulent infection. These findings provide a comprehensive description of the immune cellular landscape and differential PRRSV virulence mechanisms, which will help build new hypotheses to understand PRRSV pathogenesis and other respiratory infections.https://doi.org/10.1038/s41467-024-54676-2
spellingShingle Byeonghwi Lim
Seung-Chai Kim
Hwan-Ju Kim
Jae-Hwan Kim
Young-Jun Seo
Chiwoong Lim
Yejee Park
Sunirmal Sheet
Dahye Kim
Do-Hwan Lim
Kyeongsoon Park
Kyung-Tai Lee
Won-Il Kim
Jun-Mo Kim
Single-cell transcriptomics of bronchoalveolar lavage during PRRSV infection with different virulence
Nature Communications
title Single-cell transcriptomics of bronchoalveolar lavage during PRRSV infection with different virulence
title_full Single-cell transcriptomics of bronchoalveolar lavage during PRRSV infection with different virulence
title_fullStr Single-cell transcriptomics of bronchoalveolar lavage during PRRSV infection with different virulence
title_full_unstemmed Single-cell transcriptomics of bronchoalveolar lavage during PRRSV infection with different virulence
title_short Single-cell transcriptomics of bronchoalveolar lavage during PRRSV infection with different virulence
title_sort single cell transcriptomics of bronchoalveolar lavage during prrsv infection with different virulence
url https://doi.org/10.1038/s41467-024-54676-2
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