• Author: Rola-Łuszczak, Marzena

    National Veterinary Research Institute, Poland

  • Author: Materniak-Kornas, Magdalena

    National Veterinary Research Institute

  • Author: Pluta, Aneta

    National Veterinary Research Institute

  • Author: Podgórska, Katarzyna

    National Veterinary Research Institute, Poland

  • Author: Nielsen, Jens

    National Veterinary Institute, Technical University of Denmark

  • Author: Stadejek, Tomasz

    Warsaw University of Life Sciences

  • Author: Kuźmak, Jacek

    National Veterinary Research Institute

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Porcine reproductive and respiratory syndrome virus is the cause of reproductive failure in sows and respiratory disease in young pigs, which has been considered as one of the most costly diseases to the worldwide pig industry for almost 30 years. This study used microarray-based transcriptomic analysis of PBMCs from experimentally infected pigs to explore the patterns of immune dysregulation after infection with two East European PRRSV strains from subtype 2 (BOR and ILI) in comparison to a Danish subtype 1 strain (DAN). Transcriptional profiles were determined at day 7 post infection in three tested groups of pigs and analysed in comparison with the expression profile of control group. Microarray analysis revealed differential regulation (> 1.5-fold change) of 4253 and 7335 genes in groups infected with BOR and ILI strains, respectively, and of 12518 genes in pigs infected with Danish strain. Subtype 2 PRRSV strains showed greater induction of many genes, especially those involved in innate immunity, such as interferon stimulated antiviral genes and inflammatory markers. Functional analysis of the microarray data revealed a significant up-regulation of genes involved in processes such as acute phase response, granulocyte and agranulocyte adhesion and diapedesis, as well as down-regulation of genes enrolled in pathways engaged in protein synthesis, cell division, as well as B and T cell signaling. This study provided an insight into the host response to three different PRRSV strains at a molecular level and demonstrated variability between strains of different pathogenicity level.

Original languageEnglish
JournalMolecular Biology Reports
Issue number5
Pages (from-to)675-688
StatePublished - 7 Jun 2018

Bibliographical note

This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creat ivecommons .org/licen ses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made

CitationsWeb of Science® Times Cited: 0

    Research areas

  • Host immune response, Pig, PRRSV, Transcriptome analysis
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