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RNA-Seq data from dairy goat milk somatic cells in response to fish oil diet induced milk fat depression

ABSTRACT: RNA-Seq data from dairy goat milk somatic cells in response to fish oil diet induced milk fat depression

PROVIDER: PRJEB51882 | ENA |

REPOSITORIES: ENA

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			Action	DRS
		Other
	ERR9390110_1.fastq.gz	Fastqsanger.gz
	ERR9390110_2.fastq.gz	Fastqsanger.gz
	ERR9390130_1.fastq.gz	Fastqsanger.gz
	ERR9390130_2.fastq.gz	Fastqsanger.gz

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RNA-Seq data from dairy goat milk somatic cells in response to fish oil diet induced milk fat depression

Project description:Dietary supplementation with fish-oil modulates ruminant milk composition towards a healthier fatty acid profile for consumers, but it also causes milk fat depression (MFD). Because the dairy goat industry is mainly oriented towards cheese manufacturing, MFD can elicit economic losses. There is large individual variation in animal susceptibility with goats more (RESPO+) or less (RESPO−) responsive to diet-induced MFD. Thus, we used RNA-Seq to examine gene expression profiles in mammary cells to elucidate mechanisms underlying MFD in goats and individual variation in the extent of diet-induced MFD.

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Project description:Tandem mass tagging (TMT) was employed in this study to explore the differential proteome of milk from Guanzhong dairy goats.These bioinformatics investigations will provide new insights into the physiological activities of proteins in goat milk from Guanzhong dairy goats, as well as a scientific foundation for future study into the creation of specialized functionalised dairy products, such as cancer prevention.

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Screening and functional investigation of miRNAs regulating milk fat metabolism in dairy goat mammary gland

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Project description:Comparison of goat and cow milk-derived extracellular vesicle miRNomes (microRNA expression profiles) determined usiing RNA-sequencing (NGS).

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Milk microRNA variations in different milk compartments during feed restrictions of different intensities in dairy cows

Project description:In dairy cows, milk production and composition are affected by numerous factors, including diet. Milk is the body fluid with the highest RNA concentration, including numerous microRNA. These microRNA presence in the different milk compartments is still poorly documented and the effect of feed restriction on milk miRNome has not been described yet. The aim of this study was to describe the effects of feed restrictions of different intensitizes on milk compartment miRNome composition. Two feed restriction trials were performed on lactating dairy cows, one of high intensity and one of moderate intensity. 2 896 mature microRNA were identified in milk, including 1 493 that were already known in bovine specie. Among the 1 095 miRNA that were abundant enough to be informative, 10% were exclusive to one milk compartment and the abundance of 155 varied between compartments, revealing a specific miRNome for each milk fraction. Feed restriction affected differently these miRNome, with microRNA in whole milk and milk extracellular vesicles being the most affected and microRNA in fat globules and exfoliated mammary epithelial cells being relatively or completely unaffected. Target prediction of known microRNA that varied under feed restriction reflected modification of some key pathways for lactation related to milk fat and protein metabolisms, cell cycle and stress responses. These findings open up opportunities for future research on the use of milk miRNA as biomarkers of energy status in dairy cows.

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Project description:This investigation reports a differential proteomic analysis of the goat milk to evaluate and understand the protein changes induced by Staphylococcus spp. during a subclinical intramammary infection (IMI). A number of 9 milk samples from multiparous goats were selected for the study, 3 of which in mid-lactation (30-60 Days in milk - DIM) with very low somatic cell count (SCC) from half-udders producing a sterile milk bacterial culture (MLU), 3 of which in late lactation samples (> 250 DIM) with SCC > 2,000,000 cells/mL from half-udders producing a sterile milk bacterial culture for the whole lactation (LHU) and in conclusion 3 in late lactation (> 250 DIM) with SCC > 2,000,000 cells/mL from goat half-udders with a milk bacterial culture repeatedly positive for Staphylococcus aureus (LHS). Samples were analyzed using a shotgun proteomics approach, based on filter-aided sample preparation (FASP) followed by LC-MS/MS and on differential analysis conducted by spectral count approach (1). (1) Pisanu S, Cacciotto C, Pagnozzi D, Puggioni GMG, Uzzau S, Ciaramella P, Guccione J, Penati M, Pollera C, Moroni P, Bronzo V, Addis MF. Proteomic changes in the milk of water buffaloes (Bubalus bubalis) with subclinical mastitis due to intramammary infection by Staphylococcus aureus and by non-aureus staphylococci. Sci Rep, 2019, 9 (1), 15850. Here, we reported both a characterization of goat milk proteins and a panel of differential proteins specific of S. Aureus-infected milk that mostly affected proteins involved in defense response processes and cytoskeleton organization. In conclusion, our results provide a depth characterization of milk proteins in goat samples uninfected and infected with S. Aureus, describe the changes induced by LHU and LHS subclinical intramammary infection and suggest indications to reveal subclinical staphylococcal mastitis in goat by a proteomic investigation of milk.

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2017-02-08 | GSE89163 | GEO

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