Strong correlation between air-liquid interface cultures and in vivo transcriptomics of nasal brush biopsy
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ABSTRACT:
PROVIDER: PRJNA606035 | ENA |
REPOSITORIES: ENA
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Project description:Air-liquid interface cultures are extensively used to model chronic respiratory diseases. Comparative transcriptomics between cultured cells and fresh nasal brushings from patients suggests a high degree of correlation.
2020-07-31 | GSE145096 | GEO
Project description:iTRAQ-based comparison of proteins derived from oral cells collected by brush biopsy. Protein abundance levels compared between oral pre-malignant cells, oral cancer cells and healthy normal cells, all collected from human patients. Two separate iTRAQ labeled biological replicate analyses were conducted.
2014-05-07 | PXD000807 | Pride
Project description:iTRAQ-based comparison of proteins derived from oral cells collected by brush biopsy. Protein abundance levels compared between oral pre-malignant cells, oral cancer cells and healthy normal cells, all collected from human patients. Two separate iTRAQ labeled biological replicate analyses were conducted.
2016-07-22 | MSV000079994 | MassIVE
Project description:Purpose: Tracheal epithelial brush cells are rare chemosensory cells defined by their expression of elements of the bitter taste transduction system, and known to activate the cholinergic nervous system in the murine lung. Similar chemosensory cells in the intestine can generate lipid mediators and pro-inflammatory cytokines but whether brush cell can contribute to airway inflammation is unknown. Furthermore, despite the advances in understanding chemosensory cell effector functions, the receptors that mediate chemosensory cell activation and expansion beyond taste receptors in any compartment remain largely unknown. Methods: In this study, we isolated tracheal brush cells by FACS from naïve ChATBAC-eGFP mice with knockin of eGFP within a BAC spanning the acetylcholine transferase locus, marking brush cells in the epithelium and performed transcriptome profiling using low input RNA sequencing. We compared tracheal brush cells to EpCAM+ epithelial cells and CD45+ hematopoetic cells in naive mice. Results: When compared to EpCAM+ EpCs and to CD45+ cells in the airway, principal component analysis demonstrated that brush cells grouped quite distinctly. This brush cell distinction relative to EpCAM+ cells, was further reflected in the striking number of highly differentially expressed genes. This included 1305 genes expressed at 4-fold or higher levels in EpCAM+eGFP+ cells (brush cells), of which 418 genes were expressed at 32-fold or higher levels in brush cells. Conclusions: Our study represents the first detailed analysis of the transcriptome of tracheal brush cells and identifies a unique set of genes that are primarily expressed in brush cells including the bitter taste transduction system, synthenic machinery for several pro-inflammatory lipid mediators and HoxA2 transciptional factors.
2018-07-03 | GSE116525 | GEO
Project description: Not available
| S-EPMC5745630 | biostudies-literature
Project description:The study aimed to compare the gene expression profiles at a single cell level in bronchial brush cells between patients with idiopathic pulmonary fibrosis and disease controls.
2022-07-03 | GSE141939 | GEO
Project description:Purpose: Choline acetyltransferase (ChAT)-expressing epithelial cells are found in the upper and lower airways. In the trachea, they are referred to as brush cells. In the mouse nose two distinct populations of ChAT-eGFP+ cells had been previously described: a population of rare solitary chemosensory cells (SCCs) in the respiratory mucosa and a more abundant population of microvillous cells (MVCs) in the olfactory epithelium. Besides ChAT expression, SCCs share the expression of bitter taste receptors and signaling machinery with tracheal brush cells as well as close association with CGPR+ nerve fibers and an elongated shape. MVCs do not express bitter taste receptors, are not clearly associated with nerves and are smaller in size than SCCs. We have previously reported the transcriptional profile of tracheal ChAT-expressing brush cells but the transcriptional profile of nasal chemosensory ChAT+ epithelial cells has not been reported. Methods: In this study, we isolated nasal ChAT-eGFP+ cells by FACS from naïve ChAT(BAC)-eGFP mice with knockin of eGFP within a BAC spanning the ChAT locus, marking brush cells in the epithelium and performed transcriptome profiling using low input RNA sequencing. We sorted two distinct subsets of ChAT-eGFP+ epithelial cells from the nasal mucosa based on FACS ice and granularity characteristic: ChAT-eGFP+ EpCAM+ FSC/SSChigh (representing 5% of all ChAT-eGFP+ cells) and FSC/SSClow (representing 95% of all ChAT-eGFP+ cells), respectively. We compared them to unfractionated ChAT-eGFP- EpCAM+ epithelial cells. Results: Both nasal ChAT-eGFP subsets shared the core transcriptional profile of chemosensory cells from the intestine, trachea, gallbladder and thymus including the expression of Il25, Pou2f3, Trpm5, Avil, Plcb2 and transcripts of eicosanoid biosynthetic enzymes suggesting that most ChAT-eGFP+ cells in the nose belong to the chemosensory/tuft/brush cel family. The two subsets of nasal ChAT-eGFP+ cells differed in expression of taste receptors and taste receptor signaling machinery. Conclusions: Our study represents the first detailed analysis of the transcriptome of nasal ChAT-eGFP+ cells (brush cells) and identifies two subsets of nasal brush cells that share a core transcriptional signature but differ in expression of bitter taste receptors.
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2023-04-06 | PXD030159 | Pride
Project description:The Gauging Response in Allergic Rhinitis to Sublingual and Subcutaneous Immunotherapy (GRASS) study was a randomized, double-blind, placebo-controlled trial of individuals with timothy grass allergy who received 2 years of placebo, subcutaneous (SCIT), or sublingual immunotherapy (SLIT) and were followed for a total of 3 years. Here we utilized longitudinal transcriptomic profiling of nasal brush and peripheral blood mononuclear cell (PBMC) samples after allergen provocation collected in the GRASS study to uncover airway and systemic expression pathways mediating responsiveness to immunotherapy.
2023-12-31 | GSE206149 | GEO
Project description:Strong in combination: Polyphasic approach enhances arguments for cold-assigned cyanobacterial endemism
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