Project description:We combined an iTRAQ-based proteome-level analysis with an RNA sequencing-based transcriptome-level analysis to detect the proteins and genes related to fruit peel colour development during two fruit development stages in the ‘Tunisia’ and ‘White’ pomegranate cultivars.
Project description:Pomegranate exhibits pronounced hypolipidemic properties, and the objective of this study was to delineate the precise mechanism by which pomegranate facilitates the treatment of hyperlipidemia.SD rats were fed with a high fat diet (HFD) to establish an hyperlipidemia model and intervened with pomegranate .Pomegranate significantly lowered body weight gain , liver weight and adipose tissue coefficient, and attenuated the hepatic steatosis.Serum concentrations of triglycerides (TG), total cholesterol (TC), and low-density lipoprotein cholesterol (LDL-C) were markedly reduced, concomitant with a significant elevation in high-density lipoprotein cholesterol (HDL-C) levels. Metabolomic analysis revealed that pomegranate treatment significantly modulated 37 metabolites linked to hyperlipidemia, with the primary pathways affected encompassing sphingolipid metabolism, pyrimidine metabolism, and arachidonic acid metabolism. Transcriptomic profiling identified 439 genes differentially expressed following pomegranate treatment, which were associated with various lipid-related and inflammatory pathways, predominantly including the lipid and atherosclerosis signaling pathway, NF-κB signaling pathway, and TNF signaling pathway.
Project description:Background: MicroRNAs (miRNAs), a class of small non-coding endogenous RNAs that regulate gene expression posttranscriptionally, play multiple key roles in plant growth and development and the stress response. Knowledge of and the roles of miRNAs in pomegranate fruit development have not been explored. Results: Pomegranate, which accumulates a large amount of anthocyanins in skin and arils, is valuable to human health, mainly because of antioxidant properties. In this study, we developed a small RNA library from pooled RNA samples from young seedling to matured fruits and identified both conserved and pomegranate-specific miRNA from 29,948,480 high-quality reads. For the pool of 15- to 30-nt small RNAs, ~50% were 24 nt. The miR157 family was the most abundant, followed by miR156, miR160, and miR159, with many variants within each family. The base bias at the first position from the 5â end has a strong preference for U for most 18- to 26-nt miRNAs but a preference for A for 18-nt miRNAs. In addition, for all 24-nt miRNAs, the nucleotide U is preferred (97%) in the first position. RT-qPCR was used to validate the expression of the predominant miRNA families in leaves, male and female flowers, and multiple fruit developmental stages; miR156, miR156-v1, miR159, miR159-v1, and miR319 were upregulated during the later stages of fruit development. Gene ontology and KEGG pathway analyses revealed predominant metabolic processes and catalytic activities, important for fruit development. In addition, KEGG pathway analyses revealed the involvement of miRNAs in ascorbate and linolenic acid, starch and sucrose metabolism; RNA transport; plant hormone signaling pathways; and circadian clock. Conclusion: Pomegranate largely contains anthocyanin, flavonoids, and antioxidants, which play critical roles in treating cancer, Alzheimer disease, and preventing heart attacks. Our first and preliminary report of novel miRNAs provides information on the biochemical compounds of pomegranate for future research. The functions of the targets of these novel miRNAs need further investigation. Profiling of miRNAs in pomegranate using Illumina HiSeq 2000 platform
Project description:Pomegranate skin extract could prevent fatty liver due to high fat diet in adult male Sprague Dawley rat. There are 3 groups of rats, feeding chow diet, high fat diet and high fat diet combined with pomegrante skin extract. After 8 weeks feeding, high fat diet group developped fatty liver but the other two groups still have healthy liver. We used microarrays to detail the global programme of gene expression underlying the fatty liver development and preventive effect of pomegranate skin extract on fatty liver. There are 3 treatment groups and 6 replicates for each group. The 3 treatment groups are control group feeding chow diet, high fat group feeding high fat diet and PE group feeding high fat diet and pomegranate skin extract. Rat livers were collecteded for RNA extraction and hybridization on Affymetrix microarrays.
Project description:Background: MicroRNAs (miRNAs), a class of small non-coding endogenous RNAs that regulate gene expression posttranscriptionally, play multiple key roles in plant growth and development and the stress response. Knowledge of and the roles of miRNAs in pomegranate fruit development have not been explored. Results: Pomegranate, which accumulates a large amount of anthocyanins in skin and arils, is valuable to human health, mainly because of antioxidant properties. In this study, we developed a small RNA library from pooled RNA samples from young seedling to matured fruits and identified both conserved and pomegranate-specific miRNA from 29,948,480 high-quality reads. For the pool of 15- to 30-nt small RNAs, ~50% were 24 nt. The miR157 family was the most abundant, followed by miR156, miR160, and miR159, with many variants within each family. The base bias at the first position from the 5’ end has a strong preference for U for most 18- to 26-nt miRNAs but a preference for A for 18-nt miRNAs. In addition, for all 24-nt miRNAs, the nucleotide U is preferred (97%) in the first position. RT-qPCR was used to validate the expression of the predominant miRNA families in leaves, male and female flowers, and multiple fruit developmental stages; miR156, miR156-v1, miR159, miR159-v1, and miR319 were upregulated during the later stages of fruit development. Gene ontology and KEGG pathway analyses revealed predominant metabolic processes and catalytic activities, important for fruit development. In addition, KEGG pathway analyses revealed the involvement of miRNAs in ascorbate and linolenic acid, starch and sucrose metabolism; RNA transport; plant hormone signaling pathways; and circadian clock. Conclusion: Pomegranate largely contains anthocyanin, flavonoids, and antioxidants, which play critical roles in treating cancer, Alzheimer disease, and preventing heart attacks. Our first and preliminary report of novel miRNAs provides information on the biochemical compounds of pomegranate for future research. The functions of the targets of these novel miRNAs need further investigation.
2016-02-25 | GSE78498 | GEO
Project description:Transcriptome study of pomegranate