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Saliva alleviates hypertension through enrichment of intestinal Bacteroides thetaiotaomicron

ABSTRACT: Saliva alleviates hypertension through enrichment of intestinal Bacteroides thetaiotaomicron

PROVIDER: PRJNA1195560 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR31641885_1.fastq.gz	Fastqsanger.gz
	SRR31641885_2.fastq.gz	Fastqsanger.gz
	SRR31641886_1.fastq.gz	Fastqsanger.gz
	SRR31641886_2.fastq.gz	Fastqsanger.gz
	SRR31641887_1.fastq.gz	Fastqsanger.gz

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Saliva alleviates hypertension through enrichment of intestinal Bacteroides thetaiotaomicron

Project description:Oral environment is closely linked to blood pressure regulation, yet the underlying mechanisms remain poorly understood. In this study, we demonstrated that saliva, abundantly secreted in the oral cavity, played a critical role in sustaining the abundance of Bacteroides thetaiotaomicron (Bt) in the gut microbiota, contributing to lowering blood pressure. Further investigation revealed that the mechanism driving this process originated from mucins and metal ions in saliva, which work synergistically to promote Bt growth. In turn, the significantly increased gut abundance of Bt contributed to blood pressure downregulation indirectly by synthesizing short-chain fatty acids and regulating sodium ion channels in the gut. Based on these findings, a unique saliva-driven surface-engineered probiotic strain was developed to advance clinical translational potential by boosting in vivo bioavailability, thus improving blood pressure management. This study not only revealed that saliva lowered blood pressure through gut microbiota but also proposes a novel perspective to hypertension management.

2024-12-31 | GSE283766 | GEO

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Project description:Investigation of the overall in vitro response of Bacteroides thetaiotaomicron to human milk oligosaccharides. Comparison with response to MM-lactose and MM-galactose (Analysis performed using as a baseline datasets GSM301635 and GSM301637 corresponding to Bacteroides thetaiotaomicron response in MM-Glucose) In vitro transcriptional profiles of Bacteroides thetaiotaomicron obtained from biological duplicate cultures taken: (i) at middle log phase in minimal media galactose (MM-Gal) and minimal media lactose (MM-L) and (ii) at two timepoints during log phase in minimal media human milk oligosaccharides (MM-HMO).

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Bacteroides thetaiotaomicron OMV proteomics

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Elucidating BT4338 binding in Bacteroides thetaiotaomicron following 10 minutes of carbon starvation.

Project description:Use ChIPseq to elucidate BT4338 binding in Bacteroides thetaiotaomicron following 10 minutes of carbon starvation.

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Bacteroides thetaiotaomicron ameliorates colon inflammation in preclinical models of Crohn’s Disease [Bacteroides]

Project description:Analysis of the Bacteroides thetaiotaomicron(BT) transcriptome during co-culture with Caco-2 intestinal epithelial cells To identify potential bacterial protein(s) involved in the anti-inflammatory effect of BT in colitis, BT was incubated with Caco-2 human intestinal epithelial cells for 2 hours, and bacterial gene expression was assessed on a Bacteroides thetaiotaomicron VPI-5482 specific microarray. Forty-three BT genes were up-regulated by five-fold or more and of these, twenty genes encoded hypothetical proteins.

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Project description:Purpose: Examining the transcriptome of Bacteroides thetaiotaomicron VPI-5482 challenged with Bacteroides phage to assess surface molecule expression changes Methods: Bacteroides thetaiotaomicron was grown in BPRM in vitro or Germ-Free mice were monocolonized with Bacteroides thetaiotaomicron and gavaged with ARB25 phage. Fold change was calculated as live phage versus heat-killed phage treated samples with n=3 biological replicates. Once cells reached an optical density corresponding to mid-log phase growth (absorbance between 0.4-0.5), RNA was isolated and rRNA depleted. Samples were multiplexed for sequencing on the Illumina HiSeq platform at the University of Michigan Sequencing Core. Data was analyzed using Arraystar software (DNASTAR, Inc.) using DEseq2 normalization with default parameters. Genes with significant up- or down-regulation were determined by the following criteria: genes with an average fold-change >5-fold and with at least 2/3 biological replicates with a normalized expression level >1% of the overall average, and a p-value < 0.05 (t test with Benjamini-Hochberg correction) Results: Specific capsule expression was increased in wild-type B. thetaiotaomicron during phage infection in vitro and in vivo. Many corresponding in vivo genes were upregulated as well as other surface layer proteins.

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