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Gut Microbiota Metabolite Indole-3-Acetic Acid Maintains Intestinal Epithelial Homeostasis Through Mucin Sulfation

ABSTRACT: Gut Microbiota Metabolite Indole-3-Acetic Acid Maintains Intestinal Epithelial Homeostasis Through Mucin Sulfation

PROVIDER: PRJNA1051583 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR27186728_1.fastq.gz	Fastqsanger.gz
	SRR27186728_2.fastq.gz	Fastqsanger.gz
	SRR27186729_1.fastq.gz	Fastqsanger.gz
	SRR27186729_2.fastq.gz	Fastqsanger.gz
	SRR27186730_1.fastq.gz	Fastqsanger.gz

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Gut Microbiota Metabolite Indole-3-Acetic Acid Maintains Intestinal Epithelial Homeostasis Through Mucin Sulfation

Project description:The incidence and prevalence of inflammatory bowel disease (IBD) is gradually increasing. A high-fat diet (HFD) is known to disrupt intestinal homeostasis and aggravate IBD, yet the underlying mechanisms remain largely undefined. Here, a positive correlation between dietary fat intake and disease severity in both IBD patients and HFD-fed mice is observed. HFD induces a significant decrease in indole-3-acetic acid (IAA) and lead to intestinal barrier damage. Furthermore, IAA supplementation enhances the intestinal mucin sulfation and effectively alleviates colitis. Mechanistically, IAA upregulates key molecules involved in mucin sulfation, including Papss2 and Slc35b3, the synthesis enzyme and the transferase of 3'-phosphoadenosine-5'-phosphosulfate (PAPS), via the Aryl Hydrocarbon Receptor (AHR). More importantly, AHR can directly bind to the transcription start site of Papss2. Oral administration of Lactobacillus reuteri, which can produce IAA, contributes to protecting against colitis and promoting mucin sulfation, while the modified L. reuteri strain lacking the iaaM gene (LactobacillusΔiaaM) and the ability to produce IAA fails to exhibit such effects. Overall, IAA enhances intestinal mucin sulfation through AHR, contributing to the protection of intestinal homeostasis.

2024-05-26 | GSE249996 | GEO

Indole-3-acetic acid degradation in a novel strain Pseudomonas composti LY1

Project description:Indole-3-acetic acid (IAA), knows as common plant hormone, is one of the most distributed indole derivatives in the environment. A novel strain, which was able to use IAA as sole source of carbon and nitrogen, was isolated from farm soil, identified and classified as Pseudomonas composti LY1 based on 16S rRNA sequence and genome analysis. The optimal growth conditions for LY1 with IAA are characterized. Proteome profile of strain LY1 to IAA and citrate were analyzed and compared using label free strategy with LC-MS/MS.

2021-09-08 | PXD014968 | Pride

Transcription profiling of indole-3-acetic acid at physiological concentrations (IAA) treatment of Arabidopsis seedlings

Project description:To demonstrate the analysis of differential expression using CATMA v1 arrays, Arabidopsis seedlings were treated with indole-3-acetic acid at physiological concentrations. The seedlings were germinated in liquid medium, and treated with indole-3-acetic acid for 30, 120 or 240 minutes. Changes in expression patterns were monitored using a complete loop design including an untreated sample (0 minutes). Reciprocal labelling was used rendering a total of eight hybridisations. An additional self-to-self hybridisation for time-point 0 was included. The statistical analysis was based an ANOVA model and indicated that 1123 GSTs were differentially expressed (p < 2.37 x 10-6) in at least one of the three time points following treatment.

2004-05-31 | E-MEXP-65 | biostudies-arrayexpress

Effect of deletion of the ipdc gene, involved in indole-3-acetic acid synthesis, in the biocontrol agent Serratia plymuthica A153

Project description:To explore the role of indole-3-acetic acid (IAA) as signalling molecule in plant-associated bacteria we analyzed the whole transcriptome of S. plymuthica A153 wild type and its Δipdc mutant in vitro

2023-07-24 | GSE226107 | GEO

iac gene expression in the indole-3-acetic acid-degrading soil bacterium Enterobacter soli LF7

Project description:We show for soil bacterium Enterobacter soli LF7 (synonym Enterobacter asburiae LF7a) that possession of a iac (indole 3-acetic acid catabolic) gene cluster is causatively linked to the ability to utilize the plant hormone indole 3-acetic acid (IAA) as a carbon and energy source. Genome-wide transcriptional profiling by mRNA sequencing revealed that these iac genes chromosomally arranged as iacHABICDEFG and coding for the transformation of IAA to catechol, were the most highly induced (>29-fold) among the relatively few (<1%) differentially expressed genes in response to IAA. Also highly induced and immediately downstream of the iac cluster were genes for a Major Facilitator Superfamily protein (mfs) and enzymes of the β-ketoadipate pathway (pcaIJD-catBCA), which channels catechol into central metabolism. This entire iacHABICDEFG-mfs-pcaIJD-catBCA gene set was constitutively expressed in a iacR deletion mutant, confirming the role of iacR, annotated as coding for a MarR-type regulator and located upstream of iacH, as a repressor of iac gene expression. The research described here was funded from grants #2010-03544 and #2013-02075 awarded to JHJL by the United States Department of Agriculture (USDA) National Institute of Food and Agriculture (NIFA) Agriculture and Food Research Initiative (AFRI)

2018-05-05 | GSE114050 | GEO

Bj_indole-3-acetic acid 1 mM vs. non-treatment

Project description:Transcriptional profiling of mid-logarithmic phase cultures exposed to a 1 mM shock treatment of indole-3-acetic acid for 3 hours.

2013-06-01 | GSE36913 | GEO

Human epithelial cell response to bacterial signal indole

Project description:Indole is a bacterial signal secreted by pathogenic and commensal Escherichia coli in the stationary phase at high concentrations (~600 µM). Prior work from our lab has shown that indole decreases E. coli O157:H7 (EHEC) chemotaxis, motility, attachment to epithelial cells and biofilm formation. However, its effect on epithelial cells is not known. We hypothesized that indole induces gene expression changes in epithelial cells that lead to decreased pathogen colonization and infection. Changes in gene expression with the human enterocyte cell line HCT-8 exposed to indole suggested down-regulation of Toll-like receptor signaling and coordinated changes in Jak-STAT and p38 MAPK pathways. Corresponding changes in the expression of cytokines, chemokines, and their receptors also suggested that indole functions as a modulator of inflammation in intestinal epithelial cells. In addition, the expression of genes involved in tight junction organization (claudins, and tight junction proteins) and mucin production were also up-regulated by indole. Keywords: Inter-kingdom signaling interactions between human cells and bacterial signal indole

2009-12-22 | GSE14379 | GEO

Comparative transcriptome analysis on Arabidopsis thaliana treated by guvermectin, gibberellin acid 3, trans-zeatin, indole-3-acetic acid or epibrassinolide

Project description:Purpose: To compare transcriptomic changes after guvermectin (GV), indole-3-acetic acid (IAA), trans-zeatin (ZT), epibrassinolide (eBL) and gibberellin acid 3 (GA3) treatments in Arabidopsis. Method: 7-day-old MS liquid cultivated Col-0 seedlings were treated by 10 μM GV, 1 μM IAA, 1 μM ZT, 1 μM eBL or 1 μM GA3. Chemicals were added into MS liquid respectively and whole seedling samples were collected after treatment for 5, 30, 180 minutes. In total, we got control group and 5 treatment groups. Three biological replicates were performed. Results: In total, 54 samples were used for RNA sequencing analysis. At least 6 G clean bases were generated for each sample. Comparative analysis identified differences between GV and other plant growth regulators in transcriptional level.

2024-12-03 | GSE190152 | GEO

Human epithelial cell response to bacterial signal indole

Project description:Indole is a bacterial signal secreted by pathogenic and commensal Escherichia coli in the stationary phase at high concentrations (~600 ÂµM). Prior work from our lab has shown that indole decreases E. coli O157:H7 (EHEC) chemotaxis, motility, attachment to epithelial cells and biofilm formation. However, its effect on epithelial cells is not known. We hypothesized that indole induces gene expression changes in epithelial cells that lead to decreased pathogen colonization and infection. Changes in gene expression with the human enterocyte cell line HCT-8 exposed to indole suggested down-regulation of Toll-like receptor signaling and coordinated changes in Jak-STAT and p38 MAPK pathways. Corresponding changes in the expression of cytokines, chemokines, and their receptors also suggested that indole functions as a modulator of inflammation in intestinal epithelial cells. In addition, the expression of genes involved in tight junction organization (claudins, and tight junction proteins) and mucin production were also up-regulated by indole. Keywords: Inter-kingdom signaling interactions between human cells and bacterial signal indole Human intestinal epithelial cells were exposed to 1 mM indole for 4 h or 24 h. RNA was isolated from the control cells and cells exposed to indole for 4 h and 24 h. The experiments were performed in triplicate. A total of 9 microarrays were performed, three for each condition. The gene expression data was analyzed using significance analysis of microarrays (SAM) where a false discovery rate cut-off of 1% was used. The genes were then classified and importnat regulated pathways were reported.

2010-05-16 | E-GEOD-14379 | biostudies-arrayexpress

iac gene expression in the indole-3-acetic acid-degrading soil bacterium Enterobacter soli LF7

Project description:iac gene expression in the indole-3-acetic acid-degrading soil bacterium Enterobacter soli LF7

| PRJNA463330 | ENA