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ABSTRACT: AKK inhibits Th17 cell differentiation

PROVIDER: PRJNA889333 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR21857886_1.fastq.gz	Fastqsanger.gz
	SRR21857886_2.fastq.gz	Fastqsanger.gz
	SRR21857887_1.fastq.gz	Fastqsanger.gz
	SRR21857887_2.fastq.gz	Fastqsanger.gz
	SRR21857888_1.fastq.gz	Fastqsanger.gz

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Akkermansia muciniphila reduces lipid absorption through activating AMPK in the jejunum

Project description:Akkermansia muciniphila (Akk) associated with multiple metabolic diseases and administration of Akk can improve the metabolic disorders. However, little is known about the effect of Akk on jejunal epithelial cells which absorb lipid and interact with oral administrated Akk. We oral administrated Akk to mice and measured the lipid absorption and gene expression in small intestinal epithelial cells. The long-term effect of Akk treatment reduced lipid deposits in the liver and adipocytes with improved the glucose metabolism. This is particularly caused by reduced lipid absorption in jejunal epithelia. Akk feeding reduced the expression of those genes that regulate synthesis and cell cycles, characters of the host cell responding to energy deficiency. In fact, we detected increased AMPK-alpha phosphorylation levels in Akk-treated jejunal epithelial cells both in vivo and in vitro. Furthermore, activating AMPK inhibits lipids absorption in jejunum. Thus, we conclude that oral administration of Akk activates the AMPK pathway and represses the lipid absorption in jejunal epithelial cells, which contributes to the metabolic benefits of oral Akk administration.

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Transcription profiling of mouse T cells treated with halofuginone to investigate regulation of Y cell gene expression by Halofuginone (HF)

Project description:T cell differentiation to the Th17 effector subset requires stimulation through the T cell and co-stimulatory receptors, together with cytokine stimulation by TGFb and IL-6. The small molecule halofuginone (HF) inhibits Th17 cell development and induces a pattern of stress-regulated gene expression that mimics amino acid starvation. We used global transcript profiling to ask how halofuginone modulates gene expression induced during T cell activaiton and Th17 differentiation Experiment Overall Design: Purified mouse CD4+ CD25- T cells were activated under Th17 polarizing cytokine conditions and treated with either halofuginone or its inactive derivative, MAZ1310, for 3- or 6-hours.

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Critical role of histone demethylase Jmjd3 in the regulation of CD4+ T cell differentiation

Project description:Epigenetic factors have been implicated in the regulation of CD4(+) T-cell differentiation. Jmjd3 plays a role in many biological processes, but its in vivo function in T-cell differentiation remains unknown. Here we report that Jmjd3 ablation promotes CD4(+) T-cell differentiation into Th2 and Th17 cells in the small intestine and colon, and inhibits T-cell differentiation into Th1 cells under different cytokine-polarizing conditions and in a Th1-dependent colitis model. Jmjd3 deficiency also restrains the plasticity of the conversion of Th2, Th17 or Treg cells to Th1 cells. The skewing of T-cell differentiation is concomitant with changes in the expression of key transcription factors and cytokines. H3K27me3 and H3K4me3 levels in Jmjd3-deficient cells are correlated with altered gene expression through interactions with specific transcription factors. Our results identify Jmjd3 as an epigenetic factor in T-cell differentiation via changes in histone methylation and target gene expression. ChIP-seq of histone modification marks H3K4me3 and H3K27me3 in WT and JMJD3 cKO mouse CD4+ T-cells

2015-06-13 | E-GEOD-58775 | biostudies-arrayexpress

Regulation of T cell gene expression by Halofuginone (HF)

Project description:T cell differentiation to the Th17 effector subset requires stimulation through the T cell and co-stimulatory receptors, together with cytokine stimulation by TGFb and IL-6. The small molecule halofuginone (HF) inhibits Th17 cell development and induces a pattern of stress-regulated gene expression that mimics amino acid starvation. We used global transcript profiling to ask how halofuginone modulates gene expression induced during T cell activaiton and Th17 differentiation Keywords: T cell activation/ differentiation timecourse

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Intestinal Akkermansia muciniphila complements the therapeutic efficacy of PD1 therapy by reshaping the immunosuppressive microenvironment in nonalcoholic fatty liver disease (NAFLD)-induced hepatocellular carcinoma [scRNA-Seq]

Project description:Using scRNA-seq coupled with immunoprofiling analyses, we found that Akk decreased the populations of immunosuppressive cells, including monocytic myeloid-derived suppressor cells (m-MDSCs) and M2 macrophages, by suppressing the differentiation of these cells from monocytes, which led to T-cell proliferation and activation.

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Critical role of histone demethylase Jmjd3 in the regulation of CD4+ T cell differentiation

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Reconstruction of the dynamic regulatory network that controls Th17 cell differentiation by systematic perturbation in primary cells (ChIP-Seq)

Project description:Despite their enormous importance, the molecular circuits that control the differentiation of Th17 cells remain largely unknown. Recent studies have reconstructed regulatory networks in mammalian cells, but have focused on short-term responses and relied on perturbation approaches that cannot be applied to primary T cells. Here, we develop a systematic strategy – combining transcriptional profiling at high temporal resolution, novel computational algorithms, and innovative nanowire-based tools for performing gene perturbations in primary T cells – to derive and experimentally validate a temporal model of the dynamic regulatory network that controls Th17 differentiation. The network is arranged into two self-reinforcing and mutually antagonistic modules that either suppress or promote Th17 differentiation. The two modules contain 12 novel regulators with no previous implication in Th17 differentiation, which may be essential to maintain the appropriate balance of Th17 and other CD4+ T cell subsets. Overall, our study identifies and validates 39 regulatory factors that are embedded within a comprehensive temporal network and identifies novel drug targets and organizational principles for the differentiation of Th17 cells. DNA binding of TSC22D3 in Th17 cells compared to WCE

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