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Effect of Palmitic acid on the transcriptional profile of skin regulatory T cells (Tregs)

ABSTRACT: We found that palmitic acid inhibits proliferation and cell death of Tregs in the skin. The goal of this study is to investigate how Palmitic acid drives lipid toxicity in skin Tregs

ORGANISM(S): Mus musculus

PROVIDER: GSE208210 | GEO | 2023/07/01

REPOSITORIES: GEO

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Palmitic Acid Upregulates Type I Interferon-Mediated Antiviral Response and Cholesterol Biosynthesis in Human Astrocytes

Project description:Chronic intake of a high-fat diet increases saturated fatty acids in the brain causing the progression of neurodegenerative diseases. Palmitic acid is a free fatty acid abundant in the diet that at high concentrations may penetrate the blood brain barrier and stimulate the production of pro-inflammatory cytokines, leading to inflammation in astrocytes. The use of the synthetic neurosteroid tibolone in protection against fatty acid toxicity is emerging, but its transcriptional effects on palmitic acid induced lipotoxicity remain unclear. Herein, we performed a transcriptome profiling of normal human astrocytes to investigate the molecular mechanisms by which palmitic acid causes cellular damage to astrocytes, and whether tibolone could reverse its detrimental effects. Astrocytes undergo a profound transcriptional change at 2 mM palmitic acid, affecting the expression of 739 genes, 366 upregulated and 373 downregulated. However, tibolone at 10 nM does not entirely reverse palmitic acid effects. Additionally, the protein protein interaction reveals two novel gene clustering modules. The first module involves astrocyte defense responses by upregulation of pathways associated with antiviral innate immunity, and the second is linked to lipid metabolism. Our data suggest that activation of viral response signaling pathways might be so far, the initial molecular mechanism of astrocytes in response to a lipotoxic insult by palmitic acid, triggered particularly upon increased expression levels of *IFIT2*, *IRF1*, and *XAF1*. Therefore, this novel approach using a global gene expression analysis may shed light on the pleiotropic effects of palmitic acid on astrocytes, and provide a basis for future studies addressed to elucidate these responses in neurodegenerative conditions, which is highly valuable for the design of therapeutic strategies.

2021-02-10 | GSE166500 | GEO

Effect of palmitic acid on gene expression of two types of endothelial cells

Project description:To investigate the effect of palmitic acid on gene expression of rat corpus cavernosum endothelial cells (RCCECs) and human umbilical vein endothelial cells (HUVECs), we used palmitic acid to treat these two primary cells, which were then subjected to RNA-seq.

2022-12-01 | GSE205913 | GEO

Effect of exogenous FABP4 (A-FABP/aP2) with and without palmitic acid on gene expression in RAW264.7 macrophages

Project description:Gene expression profile of FABP4 treatment in RAW264.7 macrophages was examined to show a ligand (palmitic acid)-dependent and a ligand-independent effect of FABP4. RAW264.7 macrophages were treated with and without 200 nM recombinant FABP4 in the absence and presence of 0.2 mM palmitic acid.

2015-09-19 | E-GEOD-73173 | biostudies-arrayexpress

Abnormal metabolism of palmitic acid promotes the formation of renal calcium oxalate stones

Project description:Individual metabolic factors are involved in the occurrence and development of CaOx stones, and dyslipidemia is an independent risk factor for the formation of urolithiasis. This study have screened out palmitic acid as one of the significantly differential metabolites in the urine of patients with renal CaOx stones compared with healthy controls by metabolomics. This study aims to further clarify the correlation between abnormal palmitic acid metabolism and the formation of renal CaOx stones, confirm the promoting effect of abnormal palmitic acid metabolism on the adhesion of CaOx crystals and the formation of renal CaOx stones

2024-02-21 | GSE240279 | GEO

RNASeq of Healthy Human Skin Tregs and CD4 Teffs versus Psoriatic Human Skin Tregs and CD4 Teffs

Project description:The aim of the study was to compare the transcriptional profile of healthy skin Tregs to Tregs isolated from psoriatic lesions and to compare these profiles to CD4 Teffectors isolated from the same patient.

2019-11-08 | GSE139341 | GEO

Transcriptional profiling of Tregs and Teffs sorted from murine skin

Project description:The goal of this study was to identify transcripts that were preferentially expressed in skin-resident Tregs relative to skin-resident Teffs.

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Transcriptional regulation of genes in AML12 cells treated with Palmitic acid, LXR lingand (GW3965) and Ulk1 siRNA

Project description:Transcriptional regulation of genes in AML12 cells treated with Palmitic acid, LXR lingand (GW3965) and Ulk1 siRNA shows differential effect of Ulk1 KD on LXr responsive genes AML-12 cells co-treated with 0.75mM PA+/- 10ÂµM GW3965 for 24 h +/- Ulk1 SiRNA

2016-03-31 | E-GEOD-74059 | biostudies-arrayexpress

Gene expression profiling of HL-1 cells with lncRNA ZNF593-AS overexpression under palmitic acid stimulation

Project description:The aim of this study is to investigate molecular mechanisms underlying the function of lncRNA ZNF593-AS in cardiomyocyte under palmitic acid stimulation in vitro.

2023-04-26 | GSE230434 | GEO

RNASeq of Healthy Human Skin Tregs and CD4 Teffs versus Psoriatic Human Skin Tregs and CD4 Teffs

Project description:RNASeq of Healthy Human Skin Tregs and CD4 Teffs versus Psoriatic Human Skin Tregs and CD4 Teffs

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Transcriptional regulation of genes in AML12 cells treated with Palmitic acid, LXR lingand (GW3965) and Ulk1 siRNA

Project description:Transcriptional regulation of genes in AML12 cells treated with Palmitic acid, LXR lingand (GW3965) and Ulk1 siRNA shows differential effect of Ulk1 KD on LXr responsive genes

2016-03-31 | GSE74059 | GEO

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