Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Metabolomics Analysis of the Effect of GAT-2 Deficiency on Th1 Cells in Mice

ABSTRACT:

The classic neurotransmitter gamma-aminobutyric acid (GABA) has been shown to shape the activation and function of immune cells. There are four high affinity GABA transporters (GATs, including GAT-1, GAT-2, GAT-3 and GAT-4) responsible for the transmembrane transport of GABA in mice. To explore the effect of GAT-2 on type 1 helper T (Th1) cells, naïve CD4+ T cells were isolated from splenocytes of GAT-2 knockout (KO) and wild-type (WT) mice and cultured for Th1 cell differentiation, and then metabolomics analysis of Th1 cells was performed via gas chromatography coupled to time-of-flight mass spectrometry (GC-TOF-MS) added with multivariate analyses. The study will provide insights into T cell response to GAT-2 deficiency in mice.

INSTRUMENT(S): Gas Chromatography MS - positive

SUBMITTER: Xueyan Ding

PROVIDER: MTBLS3358 | MetaboLights | 2021-10-14

REPOSITORIES: MetaboLights

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
	MTBLS3358	Other
	FILES	Other
	MTBLS-fixed-isa.json	Other
	a_MTBLS3358_GC-MS_positive__metabolite_profiling.txt	Txt
	files-all.json	Other

Items per page:

1 - 5 of 8

Similar Datasets

GABA, glucose and insulin orchestrate CD4+ T cells effector functions

Project description:Metabolic programs of immune cells are closely linked to their effector functions , where physiological molecules provide environmental cues and guidance. Exactly how it happens is still being unraveled. Insulin maintains normal blood glucose levels and glucose is themain source of energy and a precursor for many biomolecules in T cells, whereas γ-aminobutyric acid (GABA), best known as a neurotransmitter, is increasingly recognized as a regulatory molecule in the immune system. Here, we demonstrate that GABA-mediated reduction of metabolic activity and release of inflammatory molecules, including IFNγ and IL-10, was abolished in human CD4+ T cells, when the glucose concentration was elevated above normal levels. In a glucose concentration-dependent manner, insulin enhanced the GABAA receptors activated currents and GABA-dependent Ca2+ influx. GABA decreased, whereas insulin maintained glycolysis but in a SGLT (Na + -glucose transporter)-dependent manner, revealing expression of SGLTs in activated CD4+ T cells. The SGLTs antagonist phlorizin, alone or together with GABA, restored the inhibition of IFNγ and IL-10 release in presence of high glucose. This study exposes concerted effects of GABA, glucose and insulin on CD4+ T cells metabolic activity and release of inflammatory molecules, and identifies a role for SGLTs in CD4+ T cells function.

2024-08-10 | PXD041654 | Pride

Transcription profiling of mouse model of succinate semialdehyde dehydrogenase deficiency vs wild type litter mates reveals multiple myelin alterations

Project description:Succinate semialdehyde dehydrogenase (SSADH) deficiency is a rare autosomal recessive disorder effecting approximately 350 people around the world. Patients suffering from SSADH deficiency experience language acquisition failure, memory deficiencies, autism, increased aggressive behaviors, and seizures. There is a chemical buildup of both gamma-aminobutyric acid (GABA) and gamma-hydroxybutyric acid (GHB) in the neurological system of these patients. The Aldh5a1-/- knock out mouse model of SSADH deficiency shows the same chemical imbalances as the human disease, with additional fatal tonic-clonic seizures at three weeks of age. The elucidation of seizure causing pathways will facilitate treatment of seizure phenotypes in diseases with related epilepsy. ,Gene expression patterns within the hippocampus, cerebellum, and cortex of SSADH deficient mice (Aldh5a1-/- mice) will be compared to wild type mice at a time point immediately prior to fatal seizures. ,We hypothesis that the SSADH deficient mice experience a dysfunction of glutamate/GABA/ glutamine neurotransmitter cycle linked to astroglial metabolism and/or uptake of neuronally-released glutamate. The increased levels of GHB and GABA lead to down regulation of GABA-B-Receptor leading to seizures. The SSADH deficient phenotype may also be caused by ongoing oxidative damage and the pathological role of succinic semialdehyde.,SSADH deficient mice (Aldh5a1-/- knock out) exhibit fatal seizures around three weeks of age. Mutant and wild type mice will be sacrificed between 17 and 19 days of life, and brain sections will be extracted and frozen (using a standard protocol). Hippocampus, cerebellum, and cortex from three mutant mice and three wild type mice will individually be expression profiled on the Affymetrix platform, giving a total of eighteen arrays. Comparative analysis will then be carried out, evaluating the transcript differences between mutant and wild type mice in each brain region.

2007-07-07 | E-GEOD-2866 | biostudies-arrayexpress

Lyve-1 deficiency plasma proteomics

Project description:Hyaluronan receptor LYVE-1 is expressed by liver sinusoidal endothelial cells (LSEC), lymphatic endothelial cells and specialized macrophages. Besides binding hyaluronan, LYVE-1 mediates adhesion of leukocytes and cancer cells to endothelial cells. Here, we analyzed the impact of LYVE-1 on physiological liver functions and metastasis. Mice with deficiency of Lyve-1 (Lyve-1 KO) were analyzed using histology, immunofluorescence, RNA sequencing, plasma proteomics and flow cytometry. Liver metastasis was studied by intrasplenic/intravenous injection of melanoma (B16F10luc2, WT31) or colorectal carcinoma (MC38) cell lines. Results: Hepatic architecture, liver size, endothelial differentiation and angiocrine functions were unaltered in Lyve-1 KO mice. Hyaluronan plasma levels were significantly increased in Lyve-1-KO mice; besides, plasma proteomics revealed increased carbonic anhydrase-2 and decreased FXIIIA, potential modulators of metastatis. Furthermore, gene expression analysis of LSEC indicated regulation of immunological pathways. Therefore, liver metastasis of a highly and of a weekly immunogenic tumor, i.e. melanoma and colorectal carcinoma (CRC), was analyzed in Lyve-1 KO mice. Hepatic metastasis of B16F10 luc2 and WT31 melanoma cells, but not MC38 CRC cells, was significantly reduced in Lyve-1 KO mice. While short-term adhesion assays with B16F10 luc2 cells in vivo did not show differences between Lyve-1 KO and wild-type mice, increased numbers of resident hepatic CD4+, CD8+ and regulatory T cells were detected in Lyve-1 KO livers. In addition, iron deposition was detected in F4/80+ liver macrophages known to exert pro-inflammatory effects. Conclusions: LYVE-1 deficiency controlled hepatic metastasis in a tumor cell-specific manner reducing hepatic metastasis of melanoma, but not CRC. Anti-tumorigenic effects are likely due to enhancement of the resident hepatic immune microenvironment.

2023-03-11 | PXD032717 | Pride

B cell-derived GABA elicits IL-10+ macrophages and limits anti-tumor immunity

Project description:Small, soluble metabolites are not only essential intermediates in intracellular biochemical processes, but can also influence neighboring cells when released into the extracellular milieu. Here, we identify the metabolite and neurotransmitter GABA as a candidate signaling molecule synthesized and secreted by activated B cells and plasma cells. We show that B cell-derived GABA promotes monocyte differentiation into anti-inflammatory macrophages which secrete IL-10 and inhibit CD8+ T cell killer function. In mice, B cell deficiency or B cell-specific inactivation of the GABA generating enzyme GAD67 enhances anti-tumor responses. Our study reveals that in addition to cytokines and membrane proteins, small metabolites derived from B lineage cells have immunoregulatory functions, which may be pharmaceutical targets allowing fine-tuning of immune responses.

2021-11-15 | PXD028403 | Pride

KLF10 deficiency in CD4+ T cells triggers obesity and insulin resistance

Project description:Gene expression profiling of CD4+ T regs from WT and CD4-KLF10-KO mice on a high-fat diet.

2020-11-06 | GSE139977 | GEO

Analysis of the Vav1 interactome in primary T cells

Project description:In this study, we combined mouse genetics and quantitative proteomics to characterize in a comprehensive manner the VAV1 interactome. A line of knock-in mouse expressing endogenous VAV1 molecules with a genetic tag permitting affinity purification was generated and combined with affinity purification and mass spectrometry (AP-MS) to analyze the VAV1 signaling complex that assembles in primary CD4+ T cells over 300 s of activation. This allowed us to describe in a time-resolved manner the interactome of VAV1 in primary CD4+ T cells and to identify 44 previously unknown bindings partners of VAV1. The dataset contains mass spectrometry results from the analysis of AP-MS purifications (based on affinity purification on Streptactin beads of One-Strep-tagged proteins) starting from CD4+ T cells which were either non stimulated or stimulated with pervanadate for different time lengths. Control samples for each time point were prepared from wild-type mice. 8 different conditions were thus analyzed: - VAV1-OST transgenic mice, CD4+ T cells non stimulated (noted Vav_0) - VAV1-OST transgenic mice, CD4+ T cells stimulated 30s (noted Vav_30) - VAV1-OST transgenic mice, CD4+ T cells stimulated 120s (noted Vav_120) - VAV1-OST transgenic mice, CD4+ T cells stimulated 300s (noted Vav_300) - WT mice, CD4+ T cells non stimulated (noted WT_0) - WT mice, CD4+ T cells stimulated 30s (noted WT_30) - WT mice, CD4+ T cells stimulated 120s (noted WT_120) - WT mice, CD4+ T cells stimulated 300s (noted WT_300) Four biological replicates were prepared for these 8 different conditions (noted S1, S2, S3, S4), yielding 32 analyzed samples. Three technical nanoLC-MS runs were acquired for each sample (noted R1, R2, R3), except for some samples of the biological series S4 for which 2 technical nanoLC-MS runs were performed. This led to 91 nanoLC-MS raw files composing the dataset.

2018-06-26 | PXD004217 | Pride

Bcl6 controlled gene expression in naïve CD4 T cells (Tf0)

Project description:Gene expression data from wild-type and Bcl6-/- naive CD4 T cells In order to find genes regulated by Bcl6 in follicular helper T cells Naïve CD4 T cells were sorted from wild-type (WT) and T cell-specific conditional Bcl6-/- (KO) mice-- 8 samples, 4 WT and 4 KO

2015-04-08 | E-GEOD-67622 | biostudies-arrayexpress

Bcl6 controlled gene expression in naïve CD4 T cells (Tfh)

2015-04-08 | E-GEOD-67623 | biostudies-arrayexpress

Effect of Lidocaine Transdermal Patch as Add-On Therapy in Treatment of Oxaliplatin Induced Peripheral Neuropathy in Colorectal Cancer Patients

Project description:Oxaliplatin (OXA) is a third-generation platinum-based chemotherapeutic drug with better efficacy for colorectal carcinoma (CRC). Oxaliplatin-induced peripheral neuropathy (OIPN) is one of the most frequent dose-limiting or even treatment-terminating side effects that impair optimal treatment regimens in a significant proportion of patients from 19% to over 85%. Thus, OIPN impacts the quality of life and the patient’s survival. OIPN is a clinical challenge and healthcare professionals are facing this challenge with a limited selection of analgesics and nonpharmacological therapies. Pregabalin is a structural derivative of GABA and is one of the effective treatment modalities for OIPN. It binds with high affinity to the alpha2-delta site of voltage-gated calcium channels in central nervous system tissues and inhibits neurotransmitter release, thus producing anti-nociceptive and anti-seizure effects.

| 60652 | ecrin-mdr-crc

Targeted transcriptome analysis of isolated intestinal epithelial cells from mice with constitutive Ptpn2-deficiency

Project description:Background & aims: Loss-of-function variants in the PTPN2 gene are associated with increased risk of inflammatory bowel disease. We recently showed that Ptpn2 is critical for intestinal epithelial cell (IEC) barrier maintenance, IEC-macrophage communication, and modulation of the gut microbiome in mice, restricting expansion of a small intestinal pathobiont associated with inflammatory bowel disease. Here, we aimed to identify how Ptpn2 loss affects ileal IEC subtypes and their function in vivo. Methods: Constitutive Ptpn2 wild-type, heterozygous, and knockout (KO) mice, as well as mice with inducible deletion of Ptpn2 in IECs, were used in the study. Investigation was performed using imaging techniques, flow cytometry, enteroid culture, and analysis of gene and protein levels of IEC markers. Results: Partial transcriptome analysis showed that expression of Paneth cell-associated antimicrobial peptides Lyz1, Pla2g2a, and Defa6 was down-regulated markedly in Ptpn2-KO mice compared with wild-type and heterozygous. In parallel, Paneth cell numbers were reduced, their endoplasmic reticulum architecture was disrupted, and the endoplasmic reticulum stress protein, C/EBP-homologous protein (CHOP), was increased in Ptpn2-KO mice. Despite reduced Paneth cell number, flow cytometry showed increased expression of the Paneth cell-stimulatory cytokines interleukin 22 and interferon γ+ in CD4+ T cells isolated from Ptpn2-KO ileum. Key findings in constitutive Ptpn2-KO mice were confirmed in epithelium-specific Ptpn2ΔIEC mice, which also showed impaired lysozyme protein levels in Paneth cells compared with Ptpn2fl/fl control mice. Conclusions: Constitutive Ptpn2 deficiency affects Paneth cell viability and compromises Paneth cell-specific antimicrobial peptide production. The observed effects may contribute to the increased susceptibility to intestinal infection and dysbiosis in these mice.

2023-04-10 | GSE181923 | GEO

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data