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- W2896986300 abstract "In the past years, our laboratory successfully generated transgenic rainbow trout bearing cecropin P1 transgene. These fish exhibited resistant characteristic to infection by Aeromonas salmonicida, Infectious Hematopoietic Necrosis Virus (IHNV) and Ceratomyxa shasta (a parasitic pathogen). Previously, treating rainbow trout macrophage cells (RTS-11) with cecropin B, pleurocidin and CF17, respectively, resulted in elevated expression of two pro-inflammatory genes, e.g. cyclooxygenase-2 (cox-2) and interleukin-1β (il-1β). In addition, a profiling of global gene expression by 44 k salmonid microarray analysis was conducted, and the results showed that immune relevant processes have been perturbed in cecopin P1 transgenic rainbow trout. Therefore, we hypothesized that cecropin P1 may not only eliminate pathogens directly, but also modulate the host immune systems, leading to increased resistance against pathogen infections. To confirm this hypothesis, we performed de novo mRNA deep sequencing (RNA-Seq) to analyze the transcriptomic expression profiles in three immune competent tissues of cecropin P1 transgenic rainbow trout. De novo sequencing of mRNA of the rainbow trout spleen, liver and kidney tissues were conducted by second-generation Illumina system, followed by Trinity assembly. Tissue specific unigenes were obtained, and annotated according to the Gene Ontology (GO) and the Nucleotide Basic Local Alignment Search Tool (BLAST). Over 2000 differentially expressed genes (DEGs) were determined by normalized ratio of Reads Per Kilobase of transcript per million mapped reads (RPKM) among the transgenic and non-transgenic fish in a tissue specific manner, and there were 82 DEGs in common among the three tissues. In addition, the enrichment analysis according to Gene Ontology Biological Process (GO:BP), and Kyoto Encyclopedia of Genes and Genomes (KEGG) based pathway analysis associated with innate/adaptive immunity of fish were also performed to illustrate the altered immune-related functions in each tissue. According to the RNA-Seq data, the correlations between alteration of gene expression profiles and the functional perturbations of the host immune processes were revealed. In comparison with the results of cDNA microarray analysis conducted by Lo et al., the overall results supported our hypothesis that the gene product of cecropin P1 transgene may not only directly eliminate pathogens, but also modulate the host immune system. Results of this study present valuable genetic information for Oncorhynchus mykiss, and will benefit future studies on the immunology of this fish species." @default.
- W2896986300 created "2018-10-26" @default.
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- W2896986300 date "2018-10-19" @default.
- W2896986300 modified "2023-10-06" @default.
- W2896986300 title "RNA-Seq analysis of differentially expressed genes relevant to innate and adaptive immunity in cecropin P1 transgenic rainbow trout (Oncorhynchus mykiss)" @default.
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- W2896986300 doi "https://doi.org/10.1186/s12864-018-5141-8" @default.
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