The effect of dietary fibre exposure on gene expression profiles in Caco-2 and THP-1 cells
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PROVIDER: PRJNA388892 | ENA |
REPOSITORIES: ENA
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Project description:Background: Macrophages represent an important part of the immune system in the intestine and are crucial for maintaining homeostasis. As part of research investigating the effect of dietary fibres on the intestinal immune barrier THP-1 macrophages were used as model system. Methods: THP-1 monocytes were stimulated for 48 hours with 100 ng/ml PMA and 48 hours rested in medium. Subsequently, they were stimulated with 500 ug/ml dietary fibres and the maximal observed LPS contamination to serve as background control. After 6 hours, total RNA was extracted and Affymterix Human Gene 1.1 ST arrays were used to analyze the gene expression profiles. To identify dietary fibre induced gene expression profiles in dietary fibre gene responses were compared to medium samples. Furthermore, to analyse differentiatlly affected pathways Ingenuite Pathway Analysis was employed. Results: There was a clear difference in significantly differentially expressed genes (gene cut-off p<0.05) with beta-glucan oat medium viscosity and GOS changing transcription of a relative small amount of genes and Sugar beet pectin and Resistant starch a relative large amount of genes. These latter two were also the only dietary fibres to demonstrate an increase in Fc-receptor-related pathway activation. Alternatively, beta-glucan oat medium viscosity and GOS were the only dietary fibres to activate pathways related to cellular movement and the only two to not activate the Ahr-signaling pathway (p<0.05). Conclusion: our data indicate that the in vitro THP-1 macrophage model can be used to differentiate in immunomodulatory potential of dietary fibres and provide hypotheses for functional differentiation.
2022-05-30 | GSE99611 | GEO
Project description:Background: Human intestinal tissue samples are barely accessible to study potential health benefits of nutritional compounds. Dietary fibres have been descirbed to be beneficial for intestinal health. Therefore, in this study we explored the applicability of an in vitro model, namely human intestinal Caco-2 cells, to study the effect of dietary fibres on intestinal health. Transcriptomics was applied to obtain more insight into their mode of actions in the intestinal cells. Methods: Caco-2 cells were stimulated with 500 ug/ml dietary fibres and the maximal observed LPS contamination to serve as background control for 6 hours, total RNA was extracted and Affymterix Human Gene 1.1 ST arrays were used to analyze the gene expression profiles. To identify dietary fibre induced gene expression profiles in dietary fibre gene responses were compared to medium samples. Furthermore, to analyse differentiatlly affected pathways Ingenuite Pathway Analysis was employed. Results: Pathway analysis revealed a distinct separation between the dietary fibres. GOS and beta-glucan oat medium viscosity affected transcription of a lower amount of genes (gene cut-off p<0.05) and gen transcription changes suggest an increase in vesicle transport and altered cholesterol regulation. On the other hand, the other dietary fibres differentially regulated a larger numbers of genes (gene cut-off p<0.05) and all appeared related to immune responses. We observed an increase in intracellular and extracellular anti-bacterial pathways and production of cytokines specifically aimed at communication with the adaptive immune system. Conclusion: GOS and beta-glucan oat medium viscosity appeared to induce intestinal epithelial communication with the body, whereas the other dietary fibres appeared recognized as PAMP and induce epithelial cells to interact with the immune system.
2022-05-30 | GSE99610 | GEO
Project description:Previously, we constructed a coculture model to analyze the effect of macrophages on intestinal epithelial cells, and found that TNF-a secreted from human macrophage-like THP-1 cells induced cell damage to intestinal epithelial Caco-2 cells (Exp.Cell.Res. 2006, 312(19):3909-19). In this study, we present activation of NF-kB in Caco-2 cells within 15 min after coculturing. To reveal how TNF-a secreted from THP-1 cells affects Caco-2 cells in an early stage of coculture, we exhaustively analyzed the changes of gene expression in Caco-2 cells cocultured with THP-1 cells over the time periods of 0, 1, 3, 6, 24, and 48 h by using a DNA microarray. Differentially expressed genes extracted with maSigPro demonstrated that IEX-1 was the lowest p-value gene, that is, the most significantly changed gene among the up-regulated genes. The genes expressed in a similar pattern to IEX-1 involved immunity, apoptosis, and protein kinase cascade. These findings suggest that the stimuli of TNF-a from THP-1 cells activates NF-kB, leading induction of various gene expression. This pattern of gene expression indicates that not only early defense response but also cell death occurs at the same time, causing inflammatory condition. Caco-2 cells were cultured for 14 days on a semi-permeable support, and THP-1 cells were differentiated with phorbol myristate acetate (PMA) for 4 days in 12-well plates. Then, the semi-permeable support membrane in which Caco-2 cells had been cultured was placed on the 12-well plates on which THP-1 has been cultured.
2010-04-06 | E-GEOD-17625 | biostudies-arrayexpress
Project description:Previously, we constructed a coculture model to analyze the effect of macrophages on intestinal epithelial cells, and found that TNF-a secreted from human macrophage-like THP-1 cells induced cell damage to intestinal epithelial Caco-2 cells (Exp.Cell.Res. 2006, 312(19):3909-19). In this study, we present activation of NF-kB in Caco-2 cells within 15 min after coculturing. To reveal how TNF-a secreted from THP-1 cells affects Caco-2 cells in an early stage of coculture, we exhaustively analyzed the changes of gene expression in Caco-2 cells cocultured with THP-1 cells over the time periods of 0, 1, 3, 6, 24, and 48 h by using a DNA microarray. Differentially expressed genes extracted with maSigPro demonstrated that IEX-1 was the lowest p-value gene, that is, the most significantly changed gene among the up-regulated genes. The genes expressed in a similar pattern to IEX-1 involved immunity, apoptosis, and protein kinase cascade. These findings suggest that the stimuli of TNF-a from THP-1 cells activates NF-kB, leading induction of various gene expression. This pattern of gene expression indicates that not only early defense response but also cell death occurs at the same time, causing inflammatory condition.
2010-03-08 | GSE17625 | GEO
Project description:The aim of this study was to detect miRNAs modified by biactive dietary lipids in a cellular model of enterocytes. The selected model was Caco-2 cells
2015-03-01 | GSE59153 | GEO
Project description:Bacillus velezensis strain:VTX20 | isolate:dietary fibre Genome sequencing
| PRJNA728832 | ENA
Project description:This SuperSeries is composed of the SubSeries listed below.
2022-05-30 | GSE99612 | GEO
Project description:The aim of this study was to detect miRNAs modified by biactive dietary lipids in a cellular model of enterocytes. The selected model was Caco-2 cells Differentiated Caco-2 cells were incubated with micelles containing the lipids for 24 and 48 hours. The expression leveles of the miRNAs were compared with cells treated with empty micelles. Four control and choelsterol samples, three DHA samples and two CLA samples were analyzed variables: Control (Empty micelles), Cholesterol 250 M-BM-5M 48h, DHA 200 M-BM-5M 24h, CLA 200M-BM-5M 24h Biological replicates Control: Samples 137, 159, 160, 210 Cholesterol: Samples 150, 151, 152, 219 DHA: Samples 141, 142, 143 CLA: Samples 144, 146
2015-03-01 | E-GEOD-59153 | biostudies-arrayexpress
Project description:Individualized microbiotas dictate impact of dietary fibre on colitis sensitivity
| PRJEB64164 | ENA
Project description:Increasing the consumption of dietary fibre has been proposed to alleviate the progression of non-communicable diseases such as obesity, type 2 diabetes and cardiovascular disease, yet the effect of dietary fibre on host physiology remains unclear. In this study, we performed a multiple diet feeding study in C57BL/6J mice to compare high fat and high fat modified with dietary fibre diets on host physiology and gut homeostasis by combining proteomic, metagenomic, metabolomic and glycomic techniques with correlation network analysis. We observed significant changes in physiology, liver proteome, gut microbiota and SCFA production in response to high fat diet. Dietary fibre modification did not reverse these changes but was associated with specific changes in the gut microbiota, liver proteome, SCFA production and colonic mucin glycosylation. Furthermore, correlation network analysis identified gut bacterial-glycan associations.
2021-09-08 | PXD014132 | Pride