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Choroid Plexus Expression Data from Add1 Null Mice on the C57BL/6J Background Strain

ABSTRACT: Add1 Null mice on the C57BL/6J background develop hydrocephalus that may be due to gene expression changes in the choroid plexus. We used microarrays to detail choroid plexi gene expression prior to the manifestation of hydrocephalus.

ORGANISM(S): Mus musculus

PROVIDER: GSE37098 | GEO | 2012/04/09

SECONDARY ACCESSION(S): PRJNA158259

REPOSITORIES: GEO

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Choroid Plexus Expression Data from Add1 Null Mice on the C57BL/6J Background Strain

Project description:Add1 Null mice on the C57BL/6J background develop hydrocephalus that may be due to gene expression changes in the choroid plexus. We used microarrays to detail choroid plexi gene expression prior to the manifestation of hydrocephalus. Choroid plexi from the four ventricle were dissected out, for RNA extraction and hybridization to Affymetrix microarrays, from male Add1 wildtype, heterozygous and null mice at three weeks of age. Five mice were selected for each genotype to assess gene expression prior to the development of hydrocephalus.

2012-04-08 | E-GEOD-37098 | biostudies-arrayexpress

Spatially heterogeneous choroid plexus transcriptomes encode positional identity and contribute to regional cerebrospinal fluid production

Project description:A sheet of choroid plexus epithelial cells extends into each cerebral ventricle and secretes signaling factors into the cerebrospinal fluid (CSF). To evaluate whether differences in the CSF proteome across ventricles arise, in part, from regional differences in choroid plexus gene expression, we defined the transcriptome of lateral ventricle (telencephalic) vs. fourth ventricle (hindbrain) choroid plexus. We find that positional identities of mouse, macaque, and human choroid plexi derive from gene expression domains that parallel their axial tissues of origin. We then show that molecular heterogeneity between telencephalic and hindbrain choroid plexi contributes to region-specific, age-dependent protein secretion in vitro. Transcriptome analysis of FACS-purified choroid plexus epithelial cells also predicts their cell type-specific secretome. Spatial domains with distinct protein expression profiles were observed within each choroid plexus. We propose that regional differences between choroid plexi contribute to dynamic signaling gradients across the mammalian cerebroventricular system.

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Project description:Atoh1-Cre; Myc/Myc mice developed choroid plexus papilloma and Atoh1-Cre; Myc/Myc; p53fl/fl mice developed choroid plexus carcinoma. By studying the gene expression profiles of normal choroid plexus, choroid plexus papilloma and choroid plexus carcinoma in mice, we aim to gain a better understanding of the biology of choroid plexus tumors

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Expression data from whole lateral ventricle choroid plexus tissue of young (two months old) and aged (eighteen months old) CD1 male mice.

Project description:We used microarrays to reveal the global expression profiles of young and old whole lateral ventricle choroid plexus tissue. RNA was isolated from whole lateral ventricle choroid plexus tissue followed by RNA amplification and hybridization on Affymetrix microarrays. Each sample contains both lateral ventricle choroid plexi from one male CD1 mouse. A total of six samples (three biological replicates from 2 different ages) were analyzed.

2016-07-20 | E-GEOD-82308 | biostudies-arrayexpress

Choroid plexus mast cells drive tumor-associated hydrocephalus

Project description:Tumor-associated hydrocephalus (TAH) is a common and lethal complication of brain metastases. Although other factors beyond mechanical obstructions have been suggested, the exact mechanisms are unknown. Using single-nucleus RNA-sequencing and spatial transcriptomics, we find that a distinct population of mast cells locate in the choroid plexus and dramatically increase during TAH. Genetic fate-tracing and intracranial mast cell-specific tryptase knockout showed that choroid plexus mast cells (CPMCs) disrupt cilia of choroid plexus epithelia via the tryptase-PAR2-FoxJ1 pathway and consequently increase cerebrospinal fluid production. Mast cells are also found in the human choroid plexus. Levels of tryptase in cerebrospinal fluid are closely associated with clinical severity of TAH. BMS-262084, an inhibitor of tryptase, can cross blood-brain-barrier, inhibits TAH in vivo and alleviates mast cell-induced damage of epithelial cilia in a human pluripotent stem cell-derived choroid plexus organoid model. Collectively, we uncover the function of CPMCs and provide an attractive therapy for TAH.

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A druggable signaling hub of choroid plexus immune-secretory function

Project description:Integrated multi-omics investigation of novel rat models of acquired hydrocephalus, Blood or bacteria in CSF trigger similar choroid plexus (ChP) immune-secretory responses, Crosstalk between ChP immune and epithelial cells drives CSF hypersecretion and ventriculomegaly, Repurposed systemic immunomodulators ameliorate acquired hydrocephalus, Identification of a druggable hub of ChP function relevant for multiple neurological diseases.

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A druggable signaling hub of choroid plexus immune-secretory function

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Gene expression profiles obtained from laser-microdissected human choroid plexus papilloma cells

Project description:Gene expression profiles generated from human tumor cells laser-microdissected from surgical samples of seven choroid plexus papillomas (Grade I WHO) as eight samples of epithelial cells lasermicrodissected from normal choroid plexus obtained at autopsy. Choroid plexus tumors are rare pediatric brain tumors derrived from the choroid plexus epithelium. Gene expression profiles of lasermicrodissected tumor cells from 7 individual choroid plexus tumor samples obtained at surgery were compared to gene expression profiles from non-neoplastic choroid plexus epithelial cells lasermicrodissected from normal non-neoplastic choroid plexus obtained at autopsy (Am J Surg Pathol. 2006 Jan;30(1):66-74.) in order to identfy genes differentially expressed in choroid plexus tumor cells.

2009-02-01 | E-GEOD-14098 | biostudies-arrayexpress

Gene expression data from normal mouse choroid plexus, choroid plexus papilloma and choroid plexus carcinoma

Project description:Gene expression data from normal mouse choroid plexus, choroid plexus papilloma and choroid plexus carcinoma

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Proteomics profiling of pediatric choroid plexus tumors

Project description:Aggresome is a para nuclear inclusion body that functions as a storage compartment for misfolded proteins. Our previous work revealed the presence of aggresomes in pediatric choroid plexus tumors (CPT). CPTs are rare neoplasms comprised of three pathological subgroups; choroid plexus carcinoma (CPC), a grade III tumor, atypical choroid plexus papilloma (ACPP), a grade II tumor, and choroid plexus papilloma (CPP), a grade I tumor. In the current study, we aimed to investigate the prognostic value of aggresomes-positivity and its correlation to the pathological and molecular subtypes. The proteomics profiling of 21 CPT pediatric samples was investigated using ABSciex Triple TOF 5600+ mass spectrometer.

2021-02-11 | PXD021076 | Pride

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