Oncorhynchus mykiss
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PROVIDER: PRJNA113311 | ENA |
REPOSITORIES: ENA
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Project description:The objective of this study was to identify metabolic regulatory mechanisms affected by choline availability in rainbow trout (Oncorhynchus mykiss) broodstock diets associated with increased offspring growth performance. Three customized diets were formulated to have different levels of choline: (a) 0% choline supplementation (Low Choline: 2065 ppm choline), (b) 0.6% choline supplementation (Medium Choline: 5657 ppm choline), and (c) 1.2% choline supplementation (High Choline: 9248 ppm choline). Six all-female rainbow trout families were fed experimental diets beginning 18 months post-hatch until spawning; their offspring were fed a commercial diet. Experimental broodstock diet did not affect overall choline, fatty acid, or amino acid content in the oocytes (p > 0.05), apart from tyrosine (p ≤ 0.05). Offspring body weights from the High and Low Choline diets did not differ from those in the Medium Choline diet (p > 0.05); however, family-by-diet and sire-by-diet interactions on offspring growth were detected (p ≤ 0.05). The High Choline diet did not improve growth performance in the six broodstock families at final harvest (520-days post-hatch, or dph). Numerous genes associated with muscle development and lipid metabolism were identified, including myosin, troponin C, and fatty acid binding proteins, which were associated with key signaling pathways of lipid metabolism, muscle cell development, muscle cell proliferation, and muscle cell differentiation. These findings indicate that supplementing broodstock diets with choline does regulate expression of genes related to growth and nutrient partitioning but does not lead to growth benefits in rainbow trout families selected for disease resistance.
2024-02-09 | GSE243186 | GEO
Project description:Purpose: Aim of the study is to identify changes in hepatic gene expression induced by either a 40kcal% coconut oil rich high fat diet (HFD), a 40kcal% soybean oil plus coconut oil high fat diet (SO-HFD) or a low fat vivarium chow diet (Viv). Methods: Livers from mice that had been fed one of the above mentioned diets for 35 weeks, were used to make cDNA libraries that were then sent for deep sequencing, using the Illumina TruSeq RNA. Result: Many genes involved in metabolism, lipid binding, transport and storage and many Cyp genes are dysregulated in the two high fat diets as compared to Viv HFDs in SO-HFD mice. Comparing the two HFDs shows more metabolism and disease related genes dysregulated in SO-HFD vs HFD. Conclusion: A diet high in soybean oil may be more detrimental to metabolic health than a diet high in saturated fats. cDNA isolated from livers from mice fed HFD, SO-HFD or Viv for 35 weeks, were 50bp pair-ended sequenced in triplicate using Illumina TruSeq RNA Sample Prep v2 Kit.
2015-08-28 | E-GEOD-68360 | biostudies-arrayexpress
Project description:Decay of mRNAs initiates with shortening of the poly(A) tail. Although the CCR4-NOT complex participates in deadenylation, how it becomes activates remain obscure. We show that complete deficiency in CNOT3, subunit 3 of this complex, is lethal in mice, but that heterozygotes survive as lean mice with hepatic and adipose tissues containing reduced lipid levels. Cnot3+/- mice have enhanced metabolic rates and remain lean on high-fat diets. We further provide evidence suggesting that CNOT3, by changing its level in response to feeding conditions, affects the activity of the CCR4-NOT deadenylase against poly(A) tails of specific mRNAs coding for proteins involved in metabolism of carbohydrates and fats. Because the levels of CNOT3 protein were decreased under fasting conditions and increased upon refeeding and because CNOT3 could be a positive regulator of the CCR4-NOT deadenylase, we hypothesized that the levels of CCR4-NOT target mRNAs would be lower in fed mice than in fasted mice. We compared the gene expression profiles of fed and fasted wild-type mice. Microarray analysis revealed that approximately 1,200 mRNA transcripts were down-regulated in the livers of fed mice. Of these mRNAs, 68 corresponded to the genes up-regulated in the livers of Cnot3+/- mice and fasted wild-type mice. A large number of the 68 identified genes encoded proteins involved in metabolism, especially lipid metabolism and growth. The livers were isolated from 8-week-old fed wild-type, fasted wild-type and fasted Cnot3+/- mice (n = 2 for each genotype).
2011-12-09 | E-GEOD-18925 | biostudies-arrayexpress
Project description:Bacterial community analysis of rainbow trout (Oncorhynchus mykiss) intestial tracts fed diets supplemented with brewery spent byproducts.
| PRJNA1087736 | ENA
Project description:One of the metabolic consequences of obesity is abnormal lipid accumulation in the liver, or hepatosteatosis, which can develop intomore serious diseases in the non-alcoholic liver disease (NAFLD) spectrum including non-alcoholic steatohepatitis (NASH) and hepatocellular carcinoma. Therefore, it is necessary to understand the metabolic changes that occur in hepatosteatosisin order toprevent disease progression.The liver plays a major role in regulating macronutrient and energy homeostasis in both the fed and fasted states. However, whether hepatosteatosis influences thepostprandial molecularresponse, specifically to dietary fat,has not been investigated.Therefore, the goal of this study was to comparethe proteome and phosphoproteome of steatotic livers from diet-induced obese (DIO) mice and control livers from lean mice in the postprandial response to dietary fat. Using untargeted LC-MS/MS analysis, we identified significant alterations in the levels of proteins involved in macronutrient and energy metabolism in livers of DIO compared to lean mice. In addition, uniquely phosphorylated proteins in livers of DIO andlean mice reflect regulatory mechanisms controlling cellular processes contributingto hepatosteatosis. Theresultsof this studyexpandourknowledge ofthe metabolic consequences that occur duringhepatosteatosisandtheinfluence of dietary fat on NAFLD progression.
2020-06-19 | MSV000085612 | MassIVE
Project description:The objective of this paper was to determine whether shifts in the methylome in rainbow trout (Oncorhynchus mykiss) are correlated with transcriptomic changes during early development in response to maternal dietary choline intake. Three experimental diets were formulated to have different levels of choline: (a) 2065 ppm choline (Low Choline, 0% supplementation), (b) 5657 ppm choline (Medium Choline, 0.6% supplementation), and (c) 9248 ppm choline (High Choline, 1.2% choline supplementation). Six rainbow trout families were fed experimental diets beginning 18 months post-hatch until spawning; their offspring were fed a commercial diet. Reduced representational bisulfite sequencing (RRBS) was utilized to measure genome-wide methylation differences in offspring immediately after hatching. When comparing to the Medium Choline offspring, differential DNA methylation occurred more in the Low Choline offspring than High Choline, especially in genic features like promoters. The differentially methylated CpGs (q ≤ 0.01) were identified evenly between CpG islands and shores in the genome, mostly found in the introns of genes. Genes such as fabp2 and leap2B associated with protein binding, fatty acid binding, DNA binding, and response to bacteria were differentially methylated and detected as differentially regulated genes by previous RNA-seq analysis. Although these findings indicate that levels of dietary choline available in broodstock diets alters offspring DNA methylation; most differentially expressed genes were not associated with differential DNA methylation, suggesting additional mechanisms playing a role in regulating gene expression in response to maternal choline intake.
2024-11-21 | GSE269087 | GEO
Project description:Decay of mRNAs initiates with shortening of the poly(A) tail. Although the CCR4-NOT complex participates in deadenylation, how it becomes activates remain obscure. We show that complete deficiency in CNOT3, subunit 3 of this complex, is lethal in mice, but that heterozygotes survive as lean mice with hepatic and adipose tissues containing reduced lipid levels. Cnot3+/- mice have enhanced metabolic rates and remain lean on high-fat diets. We further provide evidence suggesting that CNOT3, by changing its level in response to feeding conditions, affects the activity of the CCR4-NOT deadenylase against poly(A) tails of specific mRNAs coding for proteins involved in metabolism of carbohydrates and fats. Because the levels of CNOT3 protein were decreased under fasting conditions and increased upon refeeding and because CNOT3 could be a positive regulator of the CCR4-NOT deadenylase, we hypothesized that the levels of CCR4-NOT target mRNAs would be lower in fed mice than in fasted mice. We compared the gene expression profiles of fed and fasted wild-type mice. Microarray analysis revealed that approximately 1,200 mRNA transcripts were down-regulated in the livers of fed mice. Of these mRNAs, 68 corresponded to the genes up-regulated in the livers of Cnot3+/- mice and fasted wild-type mice. A large number of the 68 identified genes encoded proteins involved in metabolism, especially lipid metabolism and growth.
2011-12-09 | GSE18925 | GEO
Project description:transcriptome of rainbow trout with extremely high and low carcass fat content in a strain
| PRJNA287641 | ENA
Project description:Obesity and associated increased prevalence of non-alcoholic fatty liver (NAFLD) disease is suggested to be positively modulated by a high protein (HP) diet in humans and rodents. The aim was to detect mechanisms by which a HP diet prevents hepatic lipid accumulation by means of transcriptomics. To study the acute and long term effect of a high protein ingestion on hepatic lipid accumulation under both low and high fat (HF) conditions, mice were fed combinations of high (35%) or low (10%) fat and high (50%) or normal (15%) protein diets for 1 or 12 weeks. Body composition, liver fat, VLDL production rate and gene expression were investigated. Differences in metabolic processes and functions in the liver were identified using gene set enrichment analysis on microarray data. Mice fed the HP diets developed less adiposity and decreased hepatic lipid accumulation due a combination of induced processes mainly involved in protein catabolism such as transamination, TCA cycle and oxidative phosphorylation. Feeding a HP diet can successfully prevent the development of NAFLD by using ingested energy for oxidation instead of storage. Wild type mice were fed combinations of high (35%) or low (10%) fat and high (50%) or normal (15%) protein diets for 1 or 12 weeks. After the diet intervention period, the animals were killed and liver tissue was removed. Total RNA was isolated, pooled and subjected to gene expression profiling.
2012-11-21 | E-GEOD-37897 | biostudies-arrayexpress
Project description:Background: The Nguni is an indigenous Bos taurus Sanga breed which is primarily used in extensive commercial and communal farming systems in South Africa. The Nguni is a small framed early maturing breed not preferred for finishing under feedlot systems, as the large framed later maturing types are favoured for high lean meat yield. In this study we aim to investigate differentially expressed genes in Longissimus dorsi muscle of Nguni cattle fed diets differing in energy levels finished under commercial feedlot conditions. Results: Twenty Nguni and twenty Bonsmara were fed either a low (10.9 MJ ME/kg) or a high (12.00 MJ ME/kg) energy diet for 120 days. At slaughter, muscle samples were taken for RNA extraction and RNA-sequencing. A total of 2214 differentially expressed genes (DEG) were observed between the two breeds regardless of diet. For the low energy diets, 2244 DEG in the Nguni and the Bonsmara were significantly expressed, while a higher number of were differentially expression between the Nguni and Bonsmara on high energy diet (3154 DEG). A difference of 288 DEG were identified between the Nguni fed on the low and high energy diets. Most of the fat deposition genes were upregulated in the Bonsmara (ASIP, OXT, SNAI3, FOX01, PPARGC1A), with lower levels in the Nguni. Conclusion: Clear breed differences were found for the number and level of gene expression, while a larger variation in DEG were observed between the two diets within in the Bonsmara breed.
2018-09-07 | GSE119563 | GEO