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Remodeling of the Epigenetic Landscape in Rainbow Trout, Oncorhynchus mykiss, Offspring in Response to Maternal Choline Intake

ABSTRACT: Remodeling of the Epigenetic Landscape in Rainbow Trout, Oncorhynchus mykiss, Offspring in Response to Maternal Choline Intake

PROVIDER: PRJNA1120077 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR29283739_1.fastq.gz	Fastqsanger.gz
	SRR29283739_2.fastq.gz	Fastqsanger.gz
	SRR29283740_1.fastq.gz	Fastqsanger.gz
	SRR29283740_2.fastq.gz	Fastqsanger.gz
	SRR29283741_1.fastq.gz	Fastqsanger.gz

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Remodeling of the Epigenetic Landscape in Rainbow Trout, Oncorhynchus mykiss, Offspring in Response to Maternal Choline Intake

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

Maternal Dietary Choline Levels Cause Transcriptome Shift due to Genotype-by-Diet Interaction in Rainbow Trout (Oncorhynchus mykiss)

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

Oncorhynchus mykiss breed:Rainbow trout

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Proteome changes during oocyte to zygote transition in rainbow trout Oncorhynchus mykiss

Project description:The aim of present study is to identify and quantify proteins involved in the events of fertilization and early embryo development using a label-free protein quantification method in rainbow trout (Oncorhynchus mykiss) as an economically important fish species in aquaculture.

2020-01-16 | PXD013329 | Pride

Identification of genes involved in cold shock response in rainbow trout (Oncorhynchus mykiss)

Project description:A rapid decline in temperature poses a major challenge for poikilothermic fish. The gene expression of rainbow trout Oncorhynchus mykiss having undergone such a cold shock (0 °C) and a control (5 °C) were compared in a microarray-based study.

2015-12-02 | GSE75563 | GEO

Shotgun proteomic profiling of intestinal mucosa of rainbow trout Oncorhynchus mykiss

Project description:The objective of this study was to identify and quantify proteomic profiles of intestine of rainbow trout (Oncorhynchus mykiss). Specific pathogen free rainbow trout (mean length 15 ± 1 cm) were maintained in recirculating de-chlorinated water at 19±1 °C. Prior to the experiment, fish were distributed between aquaria. The test groups were infected by immersion of Yersinia ruckeri CSF007-82 (biotype 1) and 7959-11 (biotype 2) strains. The control group was immersed similar with sterile broth medium. Fish were anaesthetized and sampled aseptically at different time points. Each intestine was washed three times with sterile phosphate-buffered saline containing a cocktail of mammalian protease inhibitors. Intestinal mucosa was scraped with a sterile large scalpel blade. Intestinal samples were snap-frozen in liquid nitrogen and stored at –80 °C.

2019-11-12 | PXD011087 | Pride

Shotgun proteomic profiling of spleen of rainbow trout Oncorhynchus mykiss

Project description:The objective of this study was to identify and quantify proteomic profiles of spleen of rainbow trout Oncorhynchus mykiss. Specific pathogen free rainbow trout (mean length 15 ± 1 cm) were maintained in recirculating de-chlorinated water at 19±1 °C. Prior to the experiment, fish were distributed between 9 aquaria, 18 fish per aquarium. The test groups were infected by immersion of Yersinia ruckeri strains: CSF007-82 (biotype 1) and 7959-11 (biotype 2). The control group was immersed similar with sterile broth medium. There were 3 aquaria per each group (CSF007-82-infected, 7959-11-infected and control). Nine fish from infected and control fish groups were anaesthetized with MS-222 at 3, 9 and 28 days post exposure and sampled aseptically. Each spleen was washed three times with sterile phosphate-buffered saline containing a cocktail of mammalian protease inhibitors. Spleen samples were snap-frozen in liquid nitrogen and stored at –80 °C.

2018-08-14 | PXD008478 | Pride

Shotgun proteomic profiling of head kidney of rainbow trout Oncorhynchus mykiss

Project description:The objective of this study was to identify and quantify proteomic profiles of head kidney of rainbow trout Oncorhynchus mykiss. Specific pathogen free rainbow trout (mean length 15 ± 1 cm) were maintained in recirculating de-chlorinated water at 19±1 °C. Prior to the experiment, fish were distributed between 9 aquaria, 18 fish per aquarium. The test groups were infected by immersion of Yersinia ruckeri strains: CSF007-82 (biotype 1) and 7959-11 (biotype 2). The control group was immersed similar with sterile broth medium. There were 3 aquaria per each group (CSF007-82-infected, 7959-11-infected and control). Nine fish from infected and control fish groups were anaesthetized with MS-222 at 3, 9 and 28 days post exposure and sampled aseptically. Each head kidney was washed three times with sterile phosphate-buffered saline containing a cocktail of mammalian protease inhibitors. Head kidney samples were snap-frozen in liquid nitrogen and stored at –80 °C.

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Analysis of red blood cells from rainbow trout Oncorhynchus mykiss infected by Tetracapsuloides bryosalmonae

Project description:The myxozoan Tetracapsuloides bryosalmonae is the causative agent of proliferative kidney disease (PKD) – a disease of salmonid fishes, notably of the commercially farmed rainbow trout Oncorhynchus mykiss. Both wild and farmed salmonids are threatened by this virulent/deadly disease, which is often expressed by swollen kidneys. In order to understand the causes and consequences of the disease, we studied the immune response towards the parasite. To profile the influence of the disease on these cells, we produced a transcriptome of teleost RBCs in health and disease. Compared to erythrocytes originating from healthy fish, PKD fundamentally altered RBCs in their metabolism, adhesion, and response to inflammation.

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