Transcriptome profiling of antiviral immune and dietary fatty acid dependent responses of Atlantic salmon macrophage-like cells
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ABSTRACT:
ORGANISM(S): Salmo salar
PROVIDER: GSE93773 | GEO | 2017/10/31
SECONDARY ACCESSION(S): PRJNA362344
REPOSITORIES: GEO
Similar Datasets
Project description:There is an increasing drive to replace fish oil (FO) in finfish aquaculture diets with vegetable oils (VO), driven by the short supply of FO derived from wild fish stocks. Little is known of the consequences for fish health after such substitution. The effect of dietary VO on hepatic gene expression was determined in Atlantic salmon (Salmo salar) byg a cDNA microarray analysis. Post-smolt farmed salmon were reared for x weeks on diets where the FO component of the feed was replaced with one of three different VOs - rapeseed (RO), soybean (SO) or linseed (LO). RNA from five fish fed on each diet was extracted. A total of 20 cDNA microarray hybridisations - TRAITS / SGP Atlantic salmon 17k feature cDNA microarray - were performed - 4 diets (three VO + FO control) x 5 individuals - using a common pooled reference control design. Data were obtained from 19 of the 20 hybridisations.
2008-10-27 | E-TABM-478 | biostudies-arrayexpress
Project description:The effect of different diets (i.e. fish oil based vs vegetable oil based) on liver transcription profiles over the life history stages (freshwater and marine phases) of cultured Atlantic salmon (Salmo salar) were explored. Two groups of fish were raised from first feeding on different lipid containing diets; a) the standard 100% fish oil based diet, the other enriched with a blend of vegetable oils (75%) + fish oil (25%). Liver samples were taken from fish at four time points: two freshwater phase (as parr 36 weeks post hatch (wph); as pre-smolts, 52 wph) and two marine phase ( as post-smolts 55 wph; and as adult fish , 86 wph). A total of 96 cDNA microarray hybridisations - TRAITS / SGP Atlantic salmon 17k feature cDNA microarray - were performed ( 2 diets x 4 time points x 6 biological replicates x 2 -dye swap) using a comon pooled reference contol design.
2008-08-01 | E-TABM-449 | biostudies-arrayexpress
Project description:Transcriptional profiling of adipose tissue comparing three diets with different levels of replacement of fish oil for vegetable oils. Juvenile gilthead sea bream (Sparus aurata L.) of 16 g initial mean body weight were distributed into 9 fibreglass tanks (500 l) in groups of 60 fish at the research experimental facilities of IATS. Each group received (from May 23rd to September 19th) one of the three experimental diets nominally CTRL, 66VO and VO. All diets were based on plant proteins and dietary oil was either Scandinavian FO (CTRL diet) or a blend of vegetable oils, replacing the 66% (66VO diet) and 100% (VO diet) of FO. Four samples, using a control diet (CTRL) as reference and double color hybridization and dye swap with the other two (66VO, VO)
2015-05-09 | E-GEOD-21766 | biostudies-arrayexpress
Project description:Transcriptional profiling of adipose tissue comparing three diets with different levels of replacement of fish oil for vegetable oils.
2015-05-09 | GSE21766 | GEO
Project description:N-3 long chain polyunsaturated fatty acids (n-3LC-PUFA) are essential components of vertebrate membrane lipids and are now at critically low levels in modern Western diets. The main human dietary source for n-3LC-PUFA is fish and seafood, and over 50% of global fish production is currently supplied by aquaculture. However, increasing pressure to include vegetable oils, which are devoid of n-3LC-PUFA, in aquaculture feeds reduces their content in farmed fish flesh. The aim of this investigation was to infer mechanisms determining flesh n-3LC-PUFA content in Atlantic salmon. The TRAITS / SGP Atlantic salmon 17k feature cDNA microarray (ArrayExpress accession: A-MEXP-1790) was used to compare hepatic mRNA expression in 8 families, reared under common conditions, which exhibited contrasting high and low flesh n-3LC-PUFA levels at harvest. The microarray interrogations incorporated a common pooled reference design, comprising a total of 16 hybridisations (8 families x 2 - dye swap). Each family sample comprised RNA pooled from six sibs.
2010-05-01 | E-TABM-955 | biostudies-arrayexpress
Project description:For aquaculture of carnivorous marine species to continue to expand, dietary fish oil must be replaced with more sustainable vegetable oil alternatives. Most vegetable oils are rich in n-6 polyunsaturated fatty acids (PUFA), specifically 18:2n-6, and their inclusion in feeds reduces the n-3/n-6 PUFA ratio of the fish flesh potentially compromising its nutritional quality. Few vegetable oils are rich in n-3 PUFA but one of these, Camelina oil (CO) is unique in that, in addition to high 18:3n-3 and a high n-3/n-6 PUFA ratio, it also contains substantial levels of C20 and C22 monoenes, similar to fish oil. Cod (initial weight ~0.8 Kg) were fed for 10 weeks with diets in which fish oil was replaced with graded amounts (0 M-bM-^@M-^S 100%) of CO. Growth performance, feed efficiency and fish biometric indices (HSI and VSI) was not significantly affected by increasing dietary CO. Lipid levels of liver tended to increase and those of flesh, decrease, with increasing dietary CO although the data were largely not statistically significant. Reflecting the diet, tissue n-3 long-chain PUFA (LC-PUFA) levels significantly decreased whereas levels of 18:3n-3 and 18:2n-6 increased with increasing inclusion of dietary CO. Dietary replacement of FO by Camelina oil did not appear to induce major metabolic changes in cod intestinal tissue, but rather potentially affected rates of cellular proliferation and death as well as induce changes in the structural properties of the intestinal muscle, most likely leading to different rates of tissue regeneration and/or repair, as well as changes in contractile activity or mechanical characteristics. Our results do not allow us to conclude on the underlying biological reasons explaining these molecular effects but given the important role of the intestine in overall nutrient absorption, further attention should be given to this organ in the future when examining effects of fish oil replacement by vegetable oils.
2011-09-01 | E-TABM-1178 | biostudies-arrayexpress
Project description:This study considers the physiological modulation of liver proteins due to the supplementation with fish oils under two different dietary backgrounds: low- or high- fat and sucrose diets, and the effect of their combination with an antioxidant agent (grape polyphenols) which provides reducing power. For this scope, a quantitative proteomics approach based on the Isobaric Tag for relative and Absolute Quantitation methodology (iTRAQ)-coupled to nano-LC-MS/MS and complemented with 2D-DIGE analysis were used for determining the regulation of liver proteins exerted by the supplementation with fish oils, polyphenols or their combination of Wistar Kyoto rats in the two chosen dietary backgrounds. This experimental design was useful to investigate if the behavior of fish oils changes when the dietary background is modified and the possible synergy between fish oils and polyphenols. Results show that the capacity of fish oils, polyphenols or their combination for down or up-regulating liver proteins depends on the dietary context. In the background of low-fat low-sucrose healthy diets, 10 different proteins were altered by the sum of three supplements, in opposite to the 45 altered proteins found in the high-fat high-sucrose unhealthy diets. In both situations, fish oils seemed to be the main force for regulating liver proteins, although the addition of polyphenols was able to modulate some fish oils effects. Moreover, we provide evidence of the effect of fish oils and their combination with grape polyphenols for improving biochemical parameters and for reducing enzymes of hepatic lipogenesis and glycolysis, for enhancing fatty acid beta oxidation and insulin signaling and for the amelioration of endoplasmic reticule stress and protein oxidation when are included in an unhealthy diet.
2017-01-09 | PXD003061 | Pride
Project description:This study considers the physiological modulation of liver proteins due to the supplementation with fish oils under two different dietary backgrounds: low- or high- fat and sucrose diets, and the effect of their combination with an antioxidant agent (grape polyphenols) which provides reducing power. For this scope, a quantitative proteomics approach based on the Isobaric Tag for relative and Absolute Quantitation methodology (iTRAQ)-coupled to nano-LC-MS/MS and complemented with 2D-DIGE analysis were used for determining the regulation of liver proteins exerted by the supplementation with fish oils, polyphenols or their combination of Wistar Kyoto rats in the two chosen dietary backgrounds. This experimental design was useful to investigate if the behavior of fish oils changes when the dietary background is modified and the possible synergy between fish oils and polyphenols. Results show that the capacity of fish oils, polyphenols or their combination for down or up-regulating liver proteins depends on the dietary context. In the background of low-fat low-sucrose healthy diets, 10 different proteins were altered by the sum of three supplements, in opposite to the 45 altered proteins found in the high-fat high-sucrose unhealthy diets. In both situations, fish oils seemed to be the main force for regulating liver proteins, although the addition of polyphenols was able to modulate some fish oils effects. Moreover, we provide evidence of the effect of fish oils and their combination with grape polyphenols for improving biochemical parameters and for reducing enzymes of hepatic lipogenesis and glycolysis, for enhancing fatty acid beta oxidation and insulin signaling and for the amelioration of endoplasmic reticule stress and protein oxidation when are included in an unhealthy diet.
2017-01-17 | PXD003080 | Pride
Project description:Vegetable oils (VO) are possible substitutes for fish oil in aquafeeds but are limited by their lack of omega-3 (n-3) long-chain polyunsaturated fatty acids (LC-PUFA). However, oilseed crops can be modified to produce n-3 LC-PUFA such as eicosapentaenoic (EPA) and docosahexaenoic (DHA) acids, representing a potential option to fill the gap between supply and demand of these important nutrients. Camelina sativa was metabolically engineered to produce a seed oil with around 15 % total n-3 LC-PUFA to potentially substitute for fish oil in salmon feeds. Post-smolt Atlantic salmon (Salmo salar) were fed for 11-weeks with one of three experimental diets containing either fish oil (FO), wild-type Camelina oil (WCO) or transgenic Camelina oil (DCO) as added lipid source to evaluate fish performance, nutrient digestibility, tissue n-3 LC-PUFA, and metabolic impact determined by liver transcriptome analysis. The DCO diet did not affect any of the performance or health parameters studied and enhanced apparent digestibility of EPA and DHA compared to the WCO diet. The level of total n-3 LC-PUFA was higher in all the tissues of DCO-fed fish than in WCO-fed fish with levels in liver similar to those in fish fed FO. Endogenous LC-PUFA biosynthetic activity was observed in fish fed both the Camelina oil diets as indicated by the liver transcriptome and levels of intermediate metabolites such as docosapentaenoic acid, with data suggesting that the dietary combination of EPA and DHA inhibited desaturation and elongation activities. Expression of genes involved in phospholipid and triacylglycerol metabolism followed a similar pattern in fish fed DCO and WCO despite the difference in n-3 LC-PUFA contents.
2016-12-05 | E-MTAB-4621 | biostudies-arrayexpress
Project description:Currently, the only sustainable alternatives for dietary fish oil (FO) in aquafeeds are vegetable oils (VO) that are devoid of omega-3 (n-3) long-chain polyunsaturated fatty acids (LC-PUFA). Entirely new sources of n-3 LC-PUFA such as eicosapentaenoic (EPA) and docosahexaenoic (DHA) acids through de novo production is a potential solution to fill the gap between supply and demand of these important nutrients. Camelina sativa,was metabolically engineered to produce a seed oil (ECO) with > 20 % EPA and its potential to substitute for FO in Atlantic salmon feeds was tested. Fish were fed one of three experimental diets containing FO, wild-type camelina oil (WCO) or ECO as the sole lipid sources for 7-weeks. Inclusion of ECO did not affect any of the performance parameters studied and enhanced apparent digestibility of individual n-6 and n-3 PUFA compared to dietary WCO. High levels of EPA were maintained in brain, liver and intestine (pyloric caeca), and levels of DPA and DHA were increased in liver and intestine of fish fed ECO compared to fish fed WCO likely due to increased LC-PUFA biosynthesis based on up-regulation of the genes. Fish fed WCO and ECO showed slight lipid accumulation within hepatocytes similar to that with WCO, although not significantly different to fish fed FO. The regulation of a small number of genes could be attributed to the specific effect of ECO (311 features) with metabolism being the most affected category. The EPA oil from transgenic Camelina (ECO) could be used as a substitute for FO, however it is a hybrid oil containing both FO (EPA) and VO (18:2n-6) fatty acid signatures that resulted in similarly mixed metabolic and physiological responses.
2016-03-01 | E-MTAB-3268 | biostudies-arrayexpress