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Changes in hepatic transcriptome profile in α4β7 mAb-treated Western diet-fed mice

ABSTRACT: Hepatic transcriptome of junctional adhesion molecule A knockout, F11r–/– mice fed a Western diet (WD) for eight weeks. A cohort of WD-fed mice were treated with IgG or α4β7 mAb for four weeks starting at week four following initiation of the WD.

ORGANISM(S): Mus musculus

PROVIDER: GSE149208 | GEO | 2022/04/21

REPOSITORIES: GEO

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Changes in hepatic transcriptome profile in α4β7 mAb-treated Western diet-fed mice

Project description:Changes in hepatic transcriptome profile in α4β7 mAb-treated Western diet-fed mice

| PRJNA627669 | ENA

Deficiency of hypothalamic taste receptor type 1 member 3 prevents western diet-induced anxiety in mice

Project description:Accumulating studies support that the western diet (WD), a diet comprised of saturated fat and sugary drinks, contributes to the pathogenesis of anxiety disorders, the most prevalent mental disorders worldwide. However, the underlying mechanisms by which WD causes anxiety, remain unclear. Abundant expression of taste receptor type 1 member 3 (TAS1R3) is identified in the hypothalamus, a key brain area involved in both sensing peripheral nutritional signals and regulating anxiety. Thus, we investigated the role of the hypothalamic TAS1R3 in WD-induced anxiety using wild-type (WT) and Tas1r3 deficient (Tas1r3-/-) mice fed a normal diet (ND) or WD for 12 weeks. We evaluated anxiety levels with the open field test and the elevated plus maze test. Behavior tests showed WD increased anxiety in WT mice, whereas Tas1r3-/- mice were protected from WD-induced anxiety. Analyzing the hypothalamic transcriptome of WD-fed WT and Tas1r3-/- mice, we found 1,437 genes significantly regulated by Tas1r3 deficiency. In addition, bioinformatic analysis revealed that CREB-mediated maintenance of neuronal regeneration, which can prevent the development of anxiety, was enhanced in WD-fed Tas1r3-/- mice compared to WD-fed WT mice. In addition, in vitro studies further confirmed that Tas1r3 knockdown prevented suppression of CREB caused by high levels of glucose, fructose, and palmitic acid in adult hypothalamic neuronal cells. These results imply that TAS1R3 may play a key role in WD-induced alterations in hypothalamic functions, and inhibition of TAS1R3 overactivation in the hypothalamus could offer therapeutic targets to alleviate the effects of the WD on anxiety.

2023-08-05 | GSE216063 | GEO

Albumosomes formed by pre-folding albumin in cytoplasm of hepatocytes maintain mitochondrial homeostasis and inhibit nonalcoholic fatty liver disease

Project description:Wildtype (WT) and albumin-knockout (AKO) were fed with normal diet. We harvested the liver tissues from WT and AKO mice at 3-week, 8-week, and 10-month of age. We then performed gene expression profiling analysis using data obtained from RNA-seq of the six different liver tissues. Wildtype (WT) and albumin-knockout (AKO) mice were fed with Normal diet (ND) or Western diet (WD) for 8 weeks from the age of 8 weeks. We harvested the liver tissues from WT-ND, WT-WD, AKO-ND, AKO-WD mice . We then performed gene expression profiling analysis using data obtained from RNA-seq of the four different liver tissues. Wildtype (WT) mice fed with HFD from the age of 8 weeks were injected by 17-AAG at the 3rd, 4th, 5th, 6.5th, and 8th weeks of the HFD feeding process. The control group was injected by the solvent. Another group of mice at the same age was fed with normal diet (ND). We harvested the liver tissues ND, Ctrl, and 17-AAG mice. We then performed gene expression profiling analysis using data obtained from RNA-seq of the three different liver tissues.

2023-01-20 | GSE222922 | GEO

HIV-1 gp120 impairs B cell proliferation by inducing TGF-β1 production and FcRL4 expression via an α4β7-dependent mechanism

Project description:The anti-HIV humoral immune response following acute infection is delayed and ineffective. HIV envelope protein gp120 binds to and signals through α4β7 on T cells. We show that gp120 also binds and signals through α4β7 on B cells, resulting in an abortive proliferative response. In primary B cells, gp120 signaling through α4β7 resulted in increased expression of TGF-β1 and the B cell inhibitory receptor FcRL4. Co-culture of B cells with HIV-infected autologous CD4+ T cells also resulted in increased B cell FcRL4 expression. These findings indicate that, in addition to inducing chronic immune activation, viral proteins can contribute directly to HIV-associated B cell dysfunction, thus providing a mechanism whereby the virus subverts the early HIV-specific humoral immune response. Forty-two samples in two batches were run with different treatments and different time points.

2013-10-17 | E-GEOD-49019 | biostudies-arrayexpress

Osteopontin expression identifies a subset of recruited macrophages distinct from Kupffer cells in the fatty liver. [Single cell RNA Seq]

Project description:CITE-seq analysis on total CD45+ cells isolated from the livers of mice fed a standard diet (SD) or western diet (WD; fat, cholesterol and sugar) for 12, 24 and 36 weeks. We also performed single cell RNA sequencing analysis of the CD45- cells isolated from the livers of the mice fed the SD or WD for 24 and 36 weeks.

2020-08-18 | GSE156057 | GEO

Osteopontin expression identifies a subset of recruited macrophages distinct from Kupffer cells in the fatty liver. [Bulk RNA Seq]

2020-08-18 | GSE156052 | GEO

Gene expression data of ODH-08-treated Western diet-fed murine liver

Project description:Hepatic fibrosis is a dynamic process characterized by the net accumulation of extracellular matrix resulting from chronic liver injury such as nonalcoholic steatohepatitis. During the pathogenesis of hepatic fibrosis, activation of hepatic stellate cells (HSCs) causes transdifferentiation of quiescent cells into proliferative and fibrogenic myofibroblasts. In the present study, we developed a novel RORα-selective ligand, ODH-08, based on the modification of JC1-40, a previously reported N-methylthiourea analog. Administration of ODH-08 to Western diet (WD)-fed mice improved the signs of hepatic fibrosis: decreased hepatic collagen deposition and suppression of the expression of fibrogenic markers. ODH-08 inhibits the TGF1-induced fibrogenic activation of HSCs through suppression of the TGFβ1–SMAD signaling pathway, which represents a novel mechanism for the antifibrogenic effect of RORα. Thus, ODH-08 appears to be a promising antifibrotic agent to treat hepatic fibrosis. We performed a microarray analysis in the liver tissue of ODH-08-treated WD-fed mice to anlyse differentially expressed genes under ODH-08 administration. The control group was vehicle-treated WD-fed mice.

2024-03-01 | GSE250531 | GEO

Differential Gene Expression by Memory T Helper Cells Bearing the Gut-Homing Receptor Integrin α4β7

Project description:This series represents mature CD4+ lymphocytes with high and low expression of integrin α4β7 isolated from human subjects. Keywords = lymphocyte, integrin α4β7 , differential gene expression, microarray Keywords: parallel sample

2004-02-13 | GSE1039 | GEO

Maternal Western-style diet alters the transcriptome of chemically induced mammary tumors in female offspring rats

Project description:Some previous experimental studies have shown that early in life intake of high-fat or Western-style diets did alter the development of mammary cancer in adulthood female rats. Thus, the present study investigated the distinct gene expression patterns of chemically induced mammary tumors derived from female offspring whose dams intake control diet (CD) or Western-style diet (WD). During gestational days (GD) 12-21 and post-natal days (PND) 1-21, pregnant Sprague-Dawley (SD) rats were fed a CD diet or WD (high-fat and low-fiber and oligoelements) diet. On postnatal day (PND) 21, the female offspring received a single dose of carcinogen N-Methyl-N-Nitrosourea (MNU, 50 mg/kg) and CD diet for 12 weeks. Latency, incidence and tumor burden were registered. Mammary tumors samples were collected and histopathology and gene expression analysis were performed.

2018-10-12 | GSE96520 | GEO

Expression data from foam cells of apolipoprotein E-deficient mice

Project description:Hypercholesterolemai is a major contributor to atherosclerosis development. To assess the effects of hypercholesterolemia on the transcriptional profiling in foam cells, mice were fed regular chow, or WD for 2 or 14 weeks prior to sacrifice. We used microarrays for broad analysis of gene expression in the 3 experimental groups. Each group included 5 mice. ApoE-/- mice were fed regular mouse chow to the age of 22 weeks (CHOW) or a western-type diet for 2 weeks between weeks 22 and 24 (2w-WD) or for 14 weeks between weeks 8 and 22 (14w-WD). Foam cells in cross-sections of the aourtic sinus were isolated by laser-capsure microdissection (n=5 per group). RNA was amplified by in vitro transcription, biotinylated, and hybridized to Affymetrix Mouse Genome 430 2.0 Arrays.

2015-07-09 | E-GEOD-70619 | biostudies-arrayexpress

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