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Cxcr3 expressing leukocytes are necessary for neurofibroma formation in mice

ABSTRACT: Plexiform neurofibroma is a major contributor to morbidity in Neurofibromatosis type I (NF1) patients. Macrophages and mast cells infiltrate neurofibroma, and data from mouse models implicate these leukocytes in neurofibroma development. Anti-inflammatory therapy targeting these cell populations has been suggested as a means to prevent neurofibroma development. Here, we compare gene expression in inflamed nerves from NF1 models which invariably form neurofibroma to those with inflammation driven by EGFR overexpression which rarely progresses to neurofibroma. We find that the chemokine Cxcl10 is uniquely up-regulated in NF1 mice that invariably develop neurofibroma. Global deletion of the CXCL10 receptor, Cxcr3, prevented neurofibroma development in these neurofibroma-prone mice. Cxcr3 expression localized to T cells and dendritic cells (DCs) in both inflamed nerves and neurofibromas. These data support a heretofore unappreciated role for T cells/DCs in neurofibroma initiation.

ORGANISM(S): Mus musculus

PROVIDER: GSE122730 | GEO | 2019/02/24

REPOSITORIES: GEO

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Cxcr3 expressing leukocytes are necessary for neurofibroma formation in mice

Project description:Plexiform neurofibroma is a major contributor to morbidity in Neurofibromatosis type I (NF1) patients. Macrophages and mast cells infiltrate neurofibroma, and data from mouse models implicate these leukocytes in neurofibroma development. Anti-inflammatory therapy targeting these cell populations has been suggested as a means to prevent neurofibroma development. Here, we compare gene expression in inflamed nerves from NF1 models which invariably form neurofibroma to those with inflammation driven by EGFR overexpression which rarely progresses to neurofibroma. We find that the chemokine Cxcl10 is uniquely up-regulated in NF1 mice that invariably develop neurofibroma. Global deletion of the Cxcl10 receptor Cxcr3 prevented neurofibroma development in these neurofibroma-prone mice. Cxcr3 expression localized to T cells and dendritic cells (DCs) in both inflamed nerves and neurofibromas. These data support a heretofore unappreciated role for T cells/DCs in neurofibroma initiation.

2018-11-28 | GSE122999 | GEO

Expression data of three sets of cells: (1) Schwann cells and macrophages from 1m-old WT DRG, (2) Schwann cells (Nf1-/-) and macrophages (Nf1+/+) from 1m-old neurofibroma, (3) Schwann cells (Nf1-/-) and macrophages (Nf1+/+) from 7m-old neurofibroma

Project description:Schwann cells and macrophages were dissociated from normal DRGs and 1- and 7-month-old neurofibroma. Schwann cells from neurofibroma have Nf1-/- phenotypes. All macrophages have Nf1+/+ phenotypes. We used microarrays (Affymetrix MoGene 2.0 ST GeneChip) to detect transcriptomal changes between 7-month-old neurofibroma Schwann cells (or macrophages) versus 1-month-old wild-type (or neurofibroma) Schwann cells (or macrophages). Expression data of three sets of cells: (1)Schwann cells and macrophages from 1-month-old wild-type mouse dorsal root ganglia, (2) Schwann cells (Nf1-/-) and macrophages (Nf1+/+) from 1-month-old neurofibroma, (3) Schwann cells (Nf1-/-) and macrophages (Nf1+/+) from 7-month-old neurofibroma We chopped mouse DRG/neurofibromas into 1-3 mm^3 pieces and plated them in dissociation medium containing 20mL L-15 (Mediatech), 0.5 mg/mL collagenase type 1 (Worthington; Lakewood, NJ), and 2.5 mg/mL dispase protease type II (Cambrex; East Rutherford, NJ) at 37Â°C for 4-6 hours with shaking. The dissociation reaction was stopped by adding DMEM +10%FBS. Undigested DRG/tumors were excluded by 100ÂµM cell strainer. Cells were collected by centrifugation. For each microarrays (Schwann cell, macrophage), Affymetrix GeneChip Command Console (v4.0.0) was used to create .chp files. All the probe sets on Affymetrix Mouse Gene 2.0 ST array (Mogene-2_0-st-v1.na33.2.mm10) were summarized by Affymetix Expression Console program using robust multi-chip average (RMA) method . After preprocessing steps, data from two batches were combined and their batch effects were corrected using ComBat method Please note that [1] all MP samples are Nf1+/+ (no mutation on Nf1 gene) and the only difference is their ages (1month, 7month) and [2] the 'nf1' in sample title reperesents "neurofibroma type1 disease", not "Nf1 gene".

2017-05-01 | E-GEOD-78901 | biostudies-arrayexpress

Cxcr3 expressing leukocytes are necessary for neurofibroma formation in mice

Project description:Cxcr3 expressing leukocytes are necessary for neurofibroma formation in mice

| PRJNA507180 | ENA

Cxcr3 expressing leukocytes are necessary for neurofibroma formation in mice

Project description:Cxcr3 expressing leukocytes are necessary for neurofibroma formation in mice

| PRJNA507362 | ENA

2017-05-01 | GSE78901 | GEO

Genome-wide gene expression analysis of neurofibroma-derived NF1+/- and NF1-/- Schwann cells

Project description:Analysis of the effect of NF1 second hit mutation to the reading of the whole human genome by comparing the gene expression profiles of neurofibroma derived Schwann cell cultures representing two different NF1 genotypes (NF1+/- and NF1-/-).

2016-12-22 | GSE32029 | GEO

Pro-inflammatory Beta Cell Small Extracellular Vesicles Induce Beta Cell Failure Through Activation of the CXCL10/CXCR3 Axis in Diabetes

Project description:Coordinated communication among pancreatic islet cells is necessary for the maintenance of glucose homeostasis. In diabetes, chronic exposure to pro-inflammatory cytokines has been shown to perturb β-cell communication and function. Compelling evidence has implicated extracellular vesicles (EVs) in modulating physiological and pathological responses to β-cell stress. We report that pro-inflammatory β-cell small EVs (cytoEV) induce β-cell dysfunction, promote a pro-inflammatory islet transcriptome, and enhance recruitment of CD8+ T-cells and macrophages. Proteomic analysis of cytoEV revealed an enrichment of the chemokine, CXCL10, with surface topological analysis depicting CXCL10 as membrane-bound on cytoEV to facilitate direct binding to CXCR3 receptors on the surface of β-cells. CXCR3 receptor inhibition reduced CXCL10-cytoEV binding and attenuated β-cell dysfunction, inflammatory gene expression, and leukocyte recruitment to islets. Collectively, this work implicates the significant role of pro-inflammatory β-cell derived small EVs in modulating β-cell function, global gene expression, and antigen presentation through activation of the CXCL10/CXCR3 axis.

2021-08-25 | PXD026998 | Pride

Neurofibroma

Project description:Neurofibroma

| PRJNA484782 | ENA

Kinome profiling: cabozantinib treatment in a mouse model of plexiform neurofibroma

Project description:Neurofibromatosis type 1 (NF1) is the most common autosomal dominant disorder, affecting 1 in 3,500 individuals worldwide and predisposing to cancer. Germline mutations in the NF1 gene, encoding the p21Ras GTPase-activating protein (GAP) neurofibromin, are the underlying cause for NF1. Somatic inactivation of the wild type copy of NF1 leads to deregulated Ras signaling. Clinical manifestations are diverse for NF1 patients, but the predominant lesions are plexiform neurofibroma (PNF), arising from the Schwann cell (SC) lineage. While PNF are generally benign, approximately 10% of patients will experience PN progression to highly aggressive malignant peripheral nerve sheath tumors (MPNST) with poor prognosis. There are currently no approved targeted therapies for PNF or MPNST. In this study, we used a conditional mouse model of NF1, test the multi-receptor tyrosine kinase inhibitor, cabozantinib (XL184). Mice were treated with vehicle or with cabozantinib for 3 or 7 days. Tissue was harvested, lysates prepared, and the lysate was used for kinome profiling. From cell lines or tumor tissue, protein lysates are prepared and passed over an affinity matrix consisting of Sepharose beads covalently coupled to a mixture of linker-adapted Type I kinase inhibitors. Kinase capture is reproducible and is a function of affinity for kinases for the immobilized inhibitors, expression level of the kinase, as well as the activation state of the kinase. Following affinity purification, kinases are identified and their multiplexed kinase inhibitor bead binding quantified by mass spectrometry (MIB/MS). Our goal is to identify the kinome changes in NF1 plexiform neurofibroma induced by cabozantinib treatment.

2020-11-19 | PXD019138 | Pride

Kinome profiling: cabozantinib treatment in a mouse model of plexiform neurofibroma

2023-05-18 | PXD019005 | Pride

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