Ontology highlight
ABSTRACT:
PROVIDER: PRJNA952334 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR24068700_1.fastq.gz | Fastqsanger.gz | |||
| SRR24068700_2.fastq.gz | Fastqsanger.gz | |||
| SRR24068701_1.fastq.gz | Fastqsanger.gz | |||
| SRR24068701_2.fastq.gz | Fastqsanger.gz | |||
| SRR24068702_1.fastq.gz | Fastqsanger.gz |
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Project description:Optimization of broiler chicken breast muscle protein accretion is key for the efficient production of poultry meat, whose demand is steadily increasing. In a context where antimicrobial growth promoters use is being restricted, it is important to find alternatives as well as to characterize the effect of immunological stress on broiler chicken growth. Despite of its importance, research on broiler chicken muscle protein dynamics has been mostly limited to the study of mixed protein turnover. The present study aims to characterize the effect of a bacterial challenge and the feed supplementation of a citrus and a cucumber extract on broiler chicken individual breast muscle proteins fractional synthesis rates (FSR) using a recently developed dynamic proteomics pipeline. 21 day-old broiler chickens were administered a single 2H2O dose before being culled at different timepoints. A total of 60 breast muscle protein extracts from five experimental groups (Unchallenged, Challenged, Control Diet, Diet 1 and Diet 2) were analyzed using a DDA proteomics approach. Proteomics data was filtered in order to reliably calculate multiple proteins FSR making use of a newly developed bioinformatics pipeline. Broiler breast muscle proteins FSR uniformly decreased following a bacterial challenge, this change was judged significant for 15 individual proteins, the two major functional clusters identified as well as for mixed breast muscle protein. Citrus or cucumber extract feed supplementation did not show any effect on the breast muscle protein FSR of immunologically challenged broilers. The present study has identified potential predictive markers of breast muscle growth and provided new information on broiler chicken breast muscle protein turnover which could be essential for improving the efficiency of broiler chicken meat production.
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Project description:Transcriptional profiling of A. niger comparing WT strain vs. ΔXlnR strain treated with steam-exploded sugarcane bagasse (SESB) for 6, 12 and 24 h. The main objective was to identifiy genes related to cellulases and hemicellulases, comparing the differences between WT strain and the strain with the disrupted xylanolytic transcriptional activator gene, XlnR, after treatment with steam-exploded sugarcane. The experiment was further validated by real-time PCR, mass spectrometry of secreted proteins and enzymatic assays.
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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.
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