Oncorhynchus mykiss
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA127647 | ENA |
REPOSITORIES: ENA
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Project description:Macrophages stimulated with LPS and Poly (I:C)
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Project description:Transcriptional profiling of rainbow trout liver cells comparing liver cells from small fish with liver cells from large fish at two time periods.
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Project description:Transcriptional profiling of rainbow trout liver and muscle cells comparing small fish with large fish within a population of neomale offspring.
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Project description:The focus of this study was to investigate the response of cultured rainbow trout erythrocytes to lipopolysaccharide (LPS) and to the analog viral dsRNA Poly(I:C) using a salmonid-specific microarray platform enriched with immune-related genes. Although the transcriptomic response measured as the total number of differentially expressed genes was higher in LPS, the intensity response, in terms of genes with a FC>2, was greater in Poly(I:C) treated cells. These two treatments shared the regulation of some genes, but not alls followed the same pattern. Over representation of Gene Ontology functional categories showed us that Poly(I:C) treatment produced a immune response whereas LPS stimulation affect biological processes specially. Trout erythrocytes were isolated from blood by twice Ficoll 1.007 density gradient centrifugations. For primary cell culture, erythrocytes were resuspended in DMEM (PAA Laboratories) supplemented with 10% heat-inactivated fetal bovine serum (FBS, PAA Laboratories) and the antibiotic Primocin (100 μg/ml, Invivogen) at a density of 7.5x106 cells/ml in six well cell culture plates (NUNC) and cultured at 18 ºC and 5% CO2. Erythrocytes were stimulated with LPS from E. coli (serotype 026:B6, Sigma) and Poly(I:C) (Invivogen) at 50 μg/ml, each treatment had their own control plate. All culture plates were incubated for 24h. Total RNA was extracted from the cultures using 1 ml of Tri Reagent (Sigma) following the manufacturer’s instructions with minor modifications. Quantity and integrity was analyzed by Experion RNA StdSens Analysis Kit (Bio-Rad). The design of the microarray posses 1818 genes printed in six replicates each, including random clones from common and subtracted cDNA libraries which were compared with known vertebrate proteins using blastx. The platform was enriched in immune-related genes.
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Project description:Effect of dietary immunostimulation in the portals of entry of rainbow trout after LPS challenge
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Project description:Infectious hematopoietic necrosis virus (IHNV) can cause widespread death of rainbow trout (Oncorhynchus mykiss), understanding the molecular mechanisms that occur in the rainbow trout in response to IHNV infection will be useful to decrease IHN-related morbidity and mortality in trout aquaculture. However, the molecular mechanisms of rainbow trout in response to IHNV are very limited. This study performed analysis of mRNAs and miRNAs based on RNA-seq technology on the intestine of rainbow trout infected with IHNV and control. There were 80 differentially expressed miRNAs that regulated 3355 target mRNAs, which overlapped with differentially expressed mRNAs obtained from RNA-seq. The expression patterns of DEGs and miRNAs differentially expressed were validated by qRT-PCR. GO enrichment and KEGG pathway analyses of the potential target genes of the DE miRNAs, revealed DEGs were mainly enriched in immune-related pathways such as Toll-like receptor signaling pathway, RIG-I-like receptor signaling pathway and IL-17 signaling pathway. These findings improve our understanding of the molecular mechanisms of IHNV infection. The study analyzed the immune regulatory target gene pairs and signal pathways of rainbow trout intestine against IHNV infection at the transcriptional level, and provided basic data for the study of rainbow trout against IHNV immune regulatory.
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