Salmo salar
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA99347 | ENA |
REPOSITORIES: ENA
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Project description:Early transcriptome responses to purified Piscine orthoreovirus-1 in Atlantic salmon (Salmo salar L.) red blood cells ex vivo, compared to salmonid kidney cell lines
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Project description:Atlantic salmon (Salmo salar L.) is an environmentally and economically important organism and its gene content is reasonably well characterized. From a transcriptional standpoint, it is important to characterize the normal changes in gene expression over the course of early development, from fertilization through to the parr stage.S. salar samples were taken at 17 time points from 2 to 89 days post fertilization. Total RNA was extracted and cRNA was synthesized and hybridized to a new 44K oligo salmonid microarray platform. Quantified results were subjected to preliminary data analysis and submitted to NCBI’s Gene Expression Omnibus. Throughout the entire period of development, several thousand genes were found to be differentially regulated. This work represents the trancriptional characterization of a very large geneset that will be extremely valuable in further examination of the transcriptional changes in Atlantic salmon during the first few months of development. The expression profiles can help to annotate salmon genes in addition to being used as references against any number of experimental variables that developing salmonids might be subjected to.
2010-12-10 | GSE25938 | GEO
Project description:Searching for IPN-specific gene expression profiles in Salmo salar using susceptible and resistant families challenged with the Infectious Pancreatic Necrosis virus (IPNV).
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Project description:Piscirickettsiosis or salmonid rickettsial septicemia (SRS) caused by intracellular Gram-negative bacterial pathogen, Piscirickettsia salmonis, constitutes one of the main infectious diseases in salmonid aquaculture. In the present study, we aimed to explore the transcriptomic responses in the Atlantic salmon kidney following a low dose of EM-90-like P. salmonis infection using the consortium for Genomic Research on All Salmonids Project (cGRASP)-designed Agilent 44K salmonid oligonucleotide microarray. Two infection level phenotypes [low (L-SRS) and high (H-SRS) infection level] were revealed in infected individuals at 21 days post-injection (DPI) based on multivariate analyses of expression of four antibacterial biomarker transcripts (campb, hampa, il8a, tlr5a) and pathogen level measured by qPCR. Five fish from each group (Control, L-SRS, and H-SRS) were selected for transcriptome profiling. We identified 1636 and 3076 differentially expressed probes (DEPs) in the L-SRS and H-SRS groups, respectively (FDR = 0.01).
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Project description:Dynamics of transcriptional changes in ASK cell line upon viral infection or poly I:C stimulation
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Project description:To study the short term (48 h) hepatic transcriptional changes and identify potential modes of action, Atlantic salmon (Salmo salar) were exposed to 0.25 mg/L, 0.5 mg/L and 1.0 mg/L depleted uranium. A combination of high density (60 k) custom oligonucleotide salmonid miacroarray and quantitative real-time reverse transcription polymerase chain reaction (qPCR) was employed to perform gene expression analyses. Differentially expressed genes (DEGs) were determined using one-way analysis of variance (ANOVA) and Tukey posthoc tests. Functional enrichment analysis based on Gene Ontology (GO) was performed to link DEGs to their biological functions. The Salmo salar DEGs were further mapped to mammlian orthologs. By using ortholog DEGs, gene networks were built based on well-curated mammlian protein-protein interactions and pathways analyses were performed to link DEGs to specific toxicological/biological functions. The results obtained from microarray analysis were further verified using qPCR.
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Project description:To study the short-term hepatic transcriptional changes and identify potential modes of action, Atlantic salmon (Salmo salar) were exposed to 70 mGy external gamma radiation, 0.25 mg/L depleted uranium and combination of these two. A combination of high density (60 k) custom oligonucleotide salmonid microarray and quantitative real-time reverse transcription polymerase chain reaction (qPCR) was used to perform gene expression analyses. Differentially expressed genes (DEGs) were determined using one-way analysis of variance (ANOVA) and Tukey posthoc tests. Functional enrichment analysis based on Gene Ontology (GO) was performed to link DEGs to their biological functions. The Salmo salar DEGs were further mapped to mammlian orthologs. By using ortholog DEGs, gene networks were built based on well-curated mammlian protein-protein interactions and pathways analyses were performed to link DEGs to specific toxicological/biological functions. The results obtained from microarray analysis were further verified using qPCR.
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Project description:The response of the trout, O.mykiss, head kidney to bacterial lipopolysaccharide (LPS) or active and attenuated infectious hematopoietic necrosis virus (IHNV and attINHV respectively) intraperoniteal challenge, 24 and 72 hours post-injection, was investigated using a salmonid-specific cDNA microarray. The head kidney response to i.p. LPS-induced inflammation in the first instance displays an initial stress reaction involving suppression of major cellular processes, including immune function, followed by a proliferative hematopoietic-type/biogenesis response 3 days after administration. The viral response at the early stage of infection highlights a suppression of hematopoietic and protein biosynthetic function and a stimulation of immune response. In fish infected with IHNV a loss of cellular function including signal transduction, cell cycle and transcriptional activity 72 hours after infection reflects the tissue-specific pathology of IHNV infection. attIHNV treatment on the other hand shows a similar pattern to native IHNV infection at 24 hours however at 72hours a divergence from the viral response is seen and replace with a recovery response more similar to that observed for LPS is observed. Keywords: Viral and LPS transcriptomic response, IHNV, Trout
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