title: Transcriptomic response of porcine PBMCs to vaccination with tetanus toxoid as a model antigen.
abstract: The aim of the present study was to characterize in vivo genome-wide transcriptional responses to immune stimulation in order to get insight into the resulting changes of allocation of resources. Vaccination with tetanus toxoid was used as a model for a mixed Th1 and Th2 immune response in pig. Expression profiles of PBMCs (peripheral blood mononuclear cells) before and at 12 time points over a period of four weeks after initial and booster vaccination at day 14 were studied by use of Affymetrix GeneChip microarrays and Ingenuity Pathway Analysis (IPA). The transcriptome data in total comprised more than 5000 genes with different transcript abundances (DE-genes). Within the single time stages the numbers of DE-genes were between several hundred and more than 1000. Ingenuity Pathway Analysis mainly revealed canonical pathways of cellular immune response and cytokine signaling as well as a broad range of processes in cellular and organismal growth, proliferation and development, cell signaling, biosynthesis and metabolism. Significant changes in the expression profiles of PBMCs already occurred very early after immune stimulation. At two hours after the first vaccination 679 DE-genes corresponding to 110 canonical pathways of cytokine signaling, cellular immune response and other multiple cellular functions were found. Immune competence and global disease resistance are heritable but difficult to measure and to address by breeding. Besides QTL mapping of immune traits gene expression profiling facilitates the detection of functional gene networks and thus functional candidate genes.
authors.affiliation: Leibniz Institute for Farm Animal Biology (FBN), Institute for Genome Biology, Dummerstorf, Germany.
authors.forename: Marcel
authors.initials: M
authors.lastname: Adler
authors.forename: Eduard
authors.initials: E
authors.lastname: Murani
authors.forename: Ronald
authors.initials: R
authors.lastname: Brunner
authors.forename: Siriluck
authors.initials: S
authors.lastname: Ponsuksili
authors.forename: Klaus
authors.initials: K
authors.lastname: Wimmers
mesh_terms: D000818:Animals; D000941:Antigens / Q000276:immunology*; D005260:Female; D020869:Gene Expression Profiling; D005786:Gene Expression Regulation; D007963:Leukocytes, Mononuclear / Q000276:immunology* / Q000378:metabolism*; D008297:Male; D015203:Reproducibility of Results; D015398:Signal Transduction; D013552:Swine / Q000276:immunology*; D013745:Tetanus Toxoid / Q000276:immunology*; D013997:Time Factors; D014611:Vaccination
chemical_list: D000941:Antigens; D013745:Tetanus Toxoid
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