Ontology highlight
ABSTRACT:
PROVIDER: PRJNA846164 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR19553277_1.fastq.gz | Fastqsanger.gz | |||
| SRR19553277_2.fastq.gz | Fastqsanger.gz | |||
| SRR19553278_1.fastq.gz | Fastqsanger.gz | |||
| SRR19553278_2.fastq.gz | Fastqsanger.gz | |||
| SRR19553279_1.fastq.gz | Fastqsanger.gz |
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Project description:RNA N6-melthyladenosine has been suggested to play important roles in various biological processes. Chicken ovary development is a process controlled by complex gene regulations. In this study, transcriptome-wide m6A methylation of the Wuhua yellow-feathered chicken ovaries before and after sexual maturation was profiled to identify potential molecular mechanisms underlying chicken ovary development. The results showed that m6A levels of mRNAs changed dramatically during sexual maturity. A total of 1476 differential m6A peaks were found between these two stages with 662 significantly up-regulated methylation peaks and 814 down-regulated methylation peaks after sexual maturation. A positive correlation was found between the m6A peaks and gene expression levels. Functional enrichment analysis indicated that apoptosis related pathways might be the key molecular regulatory pathway underlying the poor reproductive performance of Wuhua yellow-feathered chicken. The fine expressional regulation of genes related to follicles development and follicle atresia controlled by m6A during the maturity results in the poor reproductive performance in the Wuhua yellow-feathered chicken. However, the regulatory mechanisms are still unclear, thus more further studies are required. The pathways and corresponding candidate genes found here may be useful for molecular design breeding for improving egg production performance in Chinese local chicken breed, and it will also benefit for the genetic resource protection of valuable avian species.
2023-11-01 | GSE239644 | GEO
Project description:The aim of this study was to explore whether, and if so, how Bacillus subtilis KC1 can enhance the growth performance of broilers that have been adversely affected by Mycoplasma gallisepticum (MG) infection. A total of 96 1-day-old male broilers were randomly divided into 4 groups: the control group (basal diet), the MG group (basal diet + MG challenge), the Bacillus subtilis KC1 group (basal diet + Bacillus subtilis KC1 supplementation), the Bacillus subtilis KC1 + MG group (basal diet + Bacillus subtilis KC1 supplementation + MG challenge). The trial lasted 42 days, and the results showed that the MG group had significantly reduced body weight and average daily gain, as well as increased feed conversion ratio of broilers, compared to the control group. Dietary supplementation with Bacillus subtilis KC1 significantly improved the growth performance of MG-infected broilers. In addition, dietary supplementation with Bacillus subtilis KC1 significantly improved oxidative stress and inflammatory response markers, characterized by increased superoxide dismutase levels and reduced levels of malondialdehyde, interleukin-1β, and tumor necrosis factor-α. Furthermore, both metabolomics and transcriptomics analyses indicated that MG infection markedly disrupted amino acid metabolism in broilers, whereas Bacillus subtilis KC1 supplementation alleviated the abnormal amino acid metabolism caused by MG infection. These results suggested that Bacillus subtilis KC1 may alleviate the poor growth performance caused by MG infection in broilers by improving amino acid metabolism.
2024-10-23 | GSE273913 | GEO
Project description:The objectives of this study were to determine the protective effects of organic acids (OA) in broilers exposed to Salmonella Pullorum challenge at early stage and to explore the potential benefits of OA by metabolomics analysis. The treatment groups included non-challenged, S. Pullorum-challenged, challenged group supplemented with virginiamycin, challenged group supplemented with OA in drinking water, challenged group supplemented with OA in feed, and challenged group supplemented with OA in combination in drinking water and feed. Results showed that early Salmonella challenge induced an acute systemic infection of broilers in the starter phase, followed by the grower phase without triggering clinical signs. OA supplementation promoted growth during the grower phase, and while OA in water contributed more, the positive effects of OA in combination were comparable to those of virginiamycin supplementation in challenged birds. Furthermore, OA could modulate the systemic metabolic perturbation caused by challenge as it alleviated stress responses mediated by steroid hormone, potentially attenuated antioxidant or immune defense, and modified intestinal microbiota metabolism. These results show a metabolic mechanism that may partly explain the potential benefits of OA in Salmonella challenged birds, and may contribute to the use of OA to control or reduce S. Pullorum infection in farm animals.
2021-05-17 | MTBLS1274 | MetaboLights
Project description:ProNa supplementation for LPS-challenged macrophages
2021-12-20 | GSE191151 | GEO
Project description:Background: Resveratrol has been demonstrated to exert pleiotropic health beneficial effects. Among the various mechanisms of action antioxidant, anti-inflammatory, cardio- and cancer-protective outcomes have been reported. Particularly, an important function of this natural compound against atherosclerosis has been postulated and the action of resveratrol on lipids and lipoprotein levels seems to be of relevance in this pathology, but also for other metabolic diseases. Accordingly, taking into consideration the straight contact of resveratrol with the intestine, this study aimed to gain insights into the protective effects of trans-resveratrol on enterocyte physiology and metabolism in proinflammatory conditions. For this purpose, a DNA microarray analysis was conducted in Caco-2 cells where global gene expression profile at intestinal level was screened. Cells were pretreated with 50 μÎ? of trans-resveratrol and, subsequently, lipopolysaccharide (LPS) was added for 48 h. Results: The microarray analysis revealed 121 genes differentially expressed between resveratrol-treated and non-treated cells (B> 0). Four genes, inhibitor of DNA binding 1(ID1), histidine-rich glycoprotein (HRG), NADPH oxidase (NOX1) and sprouty homolog 1 (SPRY), were upregulated by LPS treatment, but significantly downregulated with trans-resveratrol pretreatment (padj< 0.05). Moreover, genes implicated in pathways related to lipid metabolism, such as synthesis of lipids (z-score= -1.195) and concentration of cholesterol (z-score= -0.109), were markedly downregulated by trans-resveratrol. Other genes implicated in lipid metabolism, but also in cell death and survival function, such as transcription factors Krüppel-like factor 5 (KLF5) and amphiregulin (AREG), were also significantly inhibited by trans-resveratrol pretreatment. RT-qPCR-data confirmed the microarray results. Special mention deserves acyl-CoA synthetase long-chain family member 3 (ACSL3) and endothelial lipase (LIPG), which were downregulated by the stilbene and have been previously associated with fatty acid synthesis and obesity in other tissues. Conclusions: This study envisages that trans-resveratrol might exert important anti-lipogenic effect at intestinal level under proinflammatory conditions, which have not been previously described. The experiment was conducte in Caco-2 cells. There were three experimental groups (n=5), Caco-2 cells stimulated with lipopolysaccharides (LPS), Caco-2 cells stimulated with LPS and pre-treated with trans-resveratrol (LPS+RSV) and non-treated Caco-2 cells.
2016-06-30 | E-GEOD-73650 | biostudies-arrayexpress