NOD-PAT-STAT
Ontology highlight
ABSTRACT:
PROVIDER: PRJEB14696 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| ERR1517710.fastq.gz | Fastqsanger.gz | |||
| ERR1517720.fastq.gz | Fastqsanger.gz | |||
| ERR1517730.fastq.gz | Fastqsanger.gz | |||
| ERR1517740.fastq.gz | Fastqsanger.gz | |||
| ERR1517750.fastq.gz | Fastqsanger.gz |
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Project description:Early-life antibiotic exposure perturbs the intestinal microbiota, alters innate intestinal immunity, and accelerates type 1 diabetes development in the NOD mouse model. Here we found that maternal cecal microbiota transfer (CMT) to NOD mice with early-life antibiotic perturbation partially rescued the induced T1D acceleration. The restoration effects on the intestinal microbiome were substantial and persistent, remediating the antibiotic-depleted diversity, relative abundance of particular taxa, and metabolic pathways. CMT also protected against perturbed cecal and serum metabolites and normalized innate and adaptive immune effectors. CMT restored patterns of ileal microRNA and histone regulation of gene expression and exon-splicing. Based on the analyses of experimental data, we propose an innate intestinal immune network involving CD44, TLR2, and Reg3g, as well as their multiple microRNA and epigenetic regulators that sense intestinal signaling by the gut microbiota. This regulation affects downstream immunological tone, leading to protection against the tissue-specific T1D injury.
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Project description:Early-life antibiotic exposure perturbs the intestinal microbiota, alters innate intestinal immunity, and accelerates type 1 diabetes development in the NOD mouse model Here we found that maternal cecal microbiota transfer (CMT) to NOD mice with early-life antibiotic perturbation partially rescued the induced T1D acceleration The restoration effects on the intestinal microbiome were substantial and persistent, remediating the antibiotic-depleted diversity, relative abundance of particular taxa, and metabolic pathways CMT also protected against perturbed cecal and serum metabolites and normalized innate and adaptive immune effectors CMT restored patterns of ileal microRNA and histone regulation of gene expression and exon-splicing Based on the analyses of experimental data, we propose an innate intestinal immune network involving CD44, TLR2, and Reg3g, as well as their multiple microRNA and epigenetic regulators that sense intestinal signaling by the gut microbiota This regulation affects downstream immunological tone, leading to protection against the tissue-specific T1D injury
2020-12-28 | GSE163888 | GEO
Project description:Early-life antibiotic exposure perturbs the intestinal microbiota, alters innate intestinal immunity, and accelerates type 1 diabetes development in the NOD mouse model. Here we found that maternal cecal microbiota transfer (CMT) to NOD mice with early-life antibiotic perturbation partially rescued the induced T1D acceleration. The restoration effects on the intestinal microbiome were substantial and persistent, remediating the antibiotic-depleted diversity, relative abundance of particular taxa, and metabolic pathways. CMT also protected against perturbed cecal and serum metabolites and normalized innate and adaptive immune effectors. CMT restored patterns of ileal microRNA and histone regulation of gene expression and exon-splicing. Based on the analyses of experimental data, we propose an innate intestinal immune network involving CD44, TLR2, and Reg3g, as well as their multiple microRNA and epigenetic regulators that sense intestinal signaling by the gut microbiota. This regulation affects downstream immunological tone, leading to protection against the tissue-specific T1D injury.
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Project description:With the goal of identifying changes in gene expression in CD4(+) T cells during the development of diabetes in the nonobese diabetic (NOD) mouse, we used DNA microarrays to analyze gene expression in CD4(+) T cells from the pancreatic draining lymph nodes of NOD/BDC 2.5 T cell receptor transgenic and WT NOD mice at different ages. At 4 and 6 weeks of age, we found up-regulation of a number of genes that are known to be induced by IFN-alpha. IFN-alpha levels and IFN-alpha-producing plasmacytoid dendritic cells were increased in the PLNs of 3- to 4-week-old NOD mice. Moreover, blockade of IFN-alpha receptor 1 in NOD mice by a neutralizing antibody at 2-3 weeks of age significantly delayed the onset and decreased the incidence of type 1 diabetes, increased the relative number of immature dendritic cells in the PLNs, and enhanced the ability of spleen CD4(+) T cells to produce IL-4 and IL-10. These findings demonstrate that IFN-alpha in the PLNs is an essential initiator in the pathogenesis of type 1 diabetes in NOD mice.
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Project description:Islets from 6-week old NOR and NOD mice were submitted to proteomics analysis to study differences in insulitis and type 1 diabetes development.
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Project description:The early life microbiome plays important roles in host immunological and metabolic development. Because type 1 diabetes (T1D) incidence has been increasing substantially in recent decades, we hypothesized that early-life antibiotic use alters gut microbiota that predisposes to disease. Using NOD mice that are genetically susceptible to T1D, we examined the effects of exposure to either continuous low-dose antibiotics or pulsed therapeutic antibiotics (PAT) early in life, mimicking childhood exposures. We found that in mice receiving PAT, T1D incidence was significantly higher, microbial community composition and structure differed compared with controls. In pre-diabetic male PAT mice, the intestinal lamina propria had lower Th17 and T reg proportions and intestinal SAA expression than in controls, suggesting key roles in transducing the altered microbiota signals. PAT affected microbial lipid metabolism and host cholesterol biosynthetic gene expression. These findings show that early-life antibiotic treatments alter the gut microbiota and its metabolic capacities, intestinal gene expression, and T-cell populations, accelerating T1D onset in NOD mice.
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Project description:Regulatory T lymphocytes expressing the transcription factor Foxp3 (Treg) play an important role in the prevention of autoimmune diseases and other immunopathologies. Aberrations in Treg-mediated immunosuppression are therefore thought to be involved in the development of autoimmune pathologies but few have been documented. Recent reports indicated a central role for Treg developing during the neonatal period in the prevention of autoimmune pathology. We therefore investigated the development of Treg in neonatal NOD mice, an important animal model for autoimmune type 1 diabetes. Surprisingly, we found that, as compared to seven other commonly studied inbred mouse-strains, in neonatal NOD mice exceptionally large proportions of developing Treg express high levels of GITR and PD-1. The latter phenotype was previously associated with high Treg-autoreactivity in C57BL/6 mice, which we here confirm for NOD animals. Proportions of newly developing GITRhighPD-1+ Treg rapidly drop during the first week of age. A genome-wide genetic screen indicated involvement of several diabetes susceptibility loci in this trait. Analysis of a congenic mouse-strain confirmed that Idd5 contributes to the genetic control of GITRhighPD-1+ Treg-development in neonates. Our data thus demonstrate an intriguing and paradoxical correlation between an idiosyncrasy in Treg development in NOD mice and their susceptibility to type 1 diabetes.
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