Omega-3 PUFAs Slow Organ Aging through Promoting Energy Metabolism
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA992543 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR25204654_1.fastq.gz | Fastqsanger.gz | |||
| SRR25204654_2.fastq.gz | Fastqsanger.gz | |||
| SRR25204655_1.fastq.gz | Fastqsanger.gz | |||
| SRR25204655_2.fastq.gz | Fastqsanger.gz | |||
| SRR25204656_1.fastq.gz | Fastqsanger.gz |
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Project description:Energy metabolism dysfunction is highly connected with aging. Aged mice could exhibit multiple energy metabolism disorders, such as insulin resistance, inhibition of fatty acid degradation and lipid accumulation. PPARα is a key transcriptional factor regulating genes of fatty acid β-oxidation, playing a crucial role in lipid metabolism and ATP production. However, the role of PPARα in retarding organ aging has not been fully elucidated. Herein, we investigated the beneficial effects of Omega-3 PUFAs, endogenous agonists of PPARα, in naturally aging mice, accelerated aging mice as well as several kinds of cells cultures. Moreover, we performed studies in mfat-1 transgenic mice at 24 months of age to explore the anti-aging effects of Omega-3 PUFAs. We found that Omega-3 PUFAs and fat-1 gene restored fatty acid β-oxidation and ATP production, reduced lipid accumulation, inhibited age-related pathological changes, preserved organ functions to delay aging process. Our results suggest Omega-3 PUFAs is a promising therapeutic approach to promote healthy aging in the elderly.
2024-12-25 | GSE236867 | GEO
Project description:The optimal ratio of omega-6 to omega-3 polyunsaturated fatty acids (PUFAs) is important for keeping homeostasis of biological processes and metabolism, yet the underlying biological mechanism is poorly understood. The objective of this study was to identify changes in the pig liver transcriptome induced by a diet enriched with omega-6 and omega-3 fatty acids, and to characterize the biological mechanisms related to PUFA metabolism. Polish Landrace pigs (n =12) were fed diet enriched with linoleic acid (LA, omega-6) and alpha-linolenic acid (ALA, omega-3 family) or standard diet as a control. The fatty acids profiling was assayed in order to verify how feeding influenced the fatty acids content in liver, and subsequently next-generation sequencing (NGS) was used to identify differentially expressed genes (DEG) between transcriptomes between dietary groups. The biological mechanisms and pathway interaction networks were identified by analysis in DAVID and Cytoscape tools. Fatty acids profile analysis indicated a higher contribution of PUFAs in liver for LA and ALA-enriched diet group, particularly for the omega-3 fatty acids family, but not omega-6. Next-generation sequencing identified 3,565 DEG, 1,484 of which were induced and 2,081 were suppressed by PUFA supplemenation. Low ratio of omega-6/-3 fatty acids resulted in modulation of fatty acids metabolism pathways and over-representation of genes involved in membrane composition, signal transduction and immune response pathways. In conclusion, a diet enriched with omega-6 and omega-3 fatty acids altered the transcriptomic profile of the pig liver and affected a set of genes involved in metabolic pathways important to animal health status. Hepatic mRNA profiles of Polish Landrace pig breed fed two different diets, were generated by deep sequencing, using Illumina MiSeq. Experimental diet was enriched with polyunsaturated fatty acids (omega-6 and omega-3), while standard diet remain as a cotrol. 2 pooled samples each containing RNA extracts from 6 individuals livers were analyzed.
2016-03-15 | E-GEOD-72123 | biostudies-arrayexpress
Project description:The optimal ratio of omega-6 to omega-3 polyunsaturated fatty acids (PUFAs) is important for keeping homeostasis of biological processes and metabolism, yet the underlying biological mechanism is poorly understood. The objective of this study was to identify changes in the pig liver transcriptome induced by a diet enriched with omega-6 and omega-3 fatty acids, and to characterize the biological mechanisms related to PUFA metabolism. Polish Landrace pigs (n =12) were fed diet enriched with linoleic acid (LA, omega-6) and alpha-linolenic acid (ALA, omega-3 family) or standard diet as a control. The fatty acids profiling was assayed in order to verify how feeding influenced the fatty acids content in liver, and subsequently next-generation sequencing (NGS) was used to identify differentially expressed genes (DEG) between transcriptomes between dietary groups. The biological mechanisms and pathway interaction networks were identified by analysis in DAVID and Cytoscape tools. Fatty acids profile analysis indicated a higher contribution of PUFAs in liver for LA and ALA-enriched diet group, particularly for the omega-3 fatty acids family, but not omega-6. Next-generation sequencing identified 3,565 DEG, 1,484 of which were induced and 2,081 were suppressed by PUFA supplemenation. Low ratio of omega-6/-3 fatty acids resulted in modulation of fatty acids metabolism pathways and over-representation of genes involved in membrane composition, signal transduction and immune response pathways. In conclusion, a diet enriched with omega-6 and omega-3 fatty acids altered the transcriptomic profile of the pig liver and affected a set of genes involved in metabolic pathways important to animal health status.
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Project description:To better understand the mechanisms of miRNAs in PUFA-modulated cellular pathways, we compared physical signs and immune statuses of PUFA-treated rats. The results indicated that omega-3 PUFAs decreased production of pro-inflammatory cytokines such as interleukin-6, C-reactive protein, and tumor necrosis factor-a, at the same time, increased proportion of CD8+ suppressor T cells and regulatory T cells in rats. The changes of these biological parameters showed that the PUFA diet-induced autoimmune (AI)-prone and AI-averse rat models were successfully established. As following steps, differentially expressed miRNAs were filtered in peripheral serum by microarray assay and validated in PBMC, liver, visceral fat, and pituitary gland by stem-loop real-time quantitative-PCR (RT-qPCR). Biological databases and computational algorithms were used to classify the potential target genes of these PUFA-induced differentially expressed miRNAs.
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Project description:In this study, we further elucidate the mechanism of action of one of the most effective antitumor PUFAs, ω-3 docosahexaenoic acid, on MDA-MB-231 breast cancer cells, including those with IGFBP6 knockdown. Additionally, we analyzed the effect of reduced IGFBP6 gene expression on the mechanism of ferroptosis in MDA-MB-231 breast cancer cells under the influence of the canonical ferroptosis inducer erastin.
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Project description:Timecourse of 9-(S)-HODE treatment of Drosophila S2 cells. 9-(S)-HODE is an oxygenated metabolite of the abundant, 18 carbon, omega-6 PUFA linoleic acid. To discriminate how omega-6 PUFAs affect meta-inflammation S2 cells were with 10uM for 12 and 24hrs and microarrays performed to identify downstream transcriptional targets
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