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E-MTAB-5157

ABSTRACT: Transcriptional profiling of human bronchial epithelial cell BEAS-2B exposed to diesel and biomass ultrafine particles

PROVIDER: E-MTAB-5157 | ExpressionAtlas | 2025-01-23

REPOSITORIES: ExpressionAtlas

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			Action	DRS
	E-MTAB-5157-analysis-methods.tsv	Tabular
	E-MTAB-5157-analytics.tsv	Tabular
	E-MTAB-5157-atlasExperimentSummary.Rdata	Rdata
	E-MTAB-5157-configuration.xml	Xml
	E-MTAB-5157-g10_g15-mvaPlot.png	Other

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Transcriptional profiling of human bronchial epithelial cell BEAS-2B exposed to diesel and biomass ultrafine particles

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E-MTAB-3629

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Transcriptional profiling of human bronchial epithelial cell BEAS-2B exposed to diesel and biomass ultrafine particles

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MicroRNA levels in non-transformed and transformed lung cells

Project description:MicroRNA levels in non-transformed BEAS-2B bronchial epithelial cells, two lines of mycoplasma transformed BEAS-2B cells, and A549 lung adenocarcinoma cells were measured. Microarray analyses of 1145 microRNAs in A549 lung adenocarcinoma cells and two other transformed lung cell types relative to BEAS-2B bronchial epithelial cells were performed. 106 miRNAs were down-regulated and 69 miRNAs were up-regulated in all three transformed lines

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Project description:We reported the application of next generation sequencing technology for high-throughput profiling of miRNA expression in bronchile epithelial cell line Beas-2b with epithelial or mesenchymal mophology. By comparation the expression aboundence of known miRNAs between epithelial type and mesenchymal type Beas-2b cells, we found both upregulated and downregulated miRNAs in bronchial epithelial cells during EMT. This study provides a basic condition for further investigation of the roles of the regulated miRNAs during EMT in bronchial epithelial cells.

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Gene expression profiles in human bronchial epithelial cells exposure to cellulose nanofibrils and microcrystalline cellulose

Project description:To evaluate the biological impact of cellulose nanofibrils (CNFs) at the transcriptional level, we conducted whole-genome microarray analyses on human bronchial epithelial cells (BEAS-2B) exposed to CNFs with different physicochemical properties. The results were compared with those from exposures to microcrystalline cellulose (MCC).

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Defining a No Observable Transcriptional Effect Level (NOTEL) for low dose N-OH-PhIP exposures in human BEAS-2B bronchioepithelial cells

Project description:The estimation of acceptable exposure levels for genotoxicants is accomplished by defining thresholds from apical endpoints, or by modeling points of departure from data that are acquired from high dose experiments, followed by linear extrapolation of the response through zero. We recently proposed that low dose exposure-induced transcriptional changes that can be linked to mechanisms of pathogenesis could provide a more sensitive alternative for defining thresholds for biological responses. In the present study, we used gene expression profiling data to determine an empirical transcriptional dose response threshold for the food and tobacco smoke borne carcinogen, 2-amino-1-methyl-6-phenylimidazo[4,5]pyridine (PhIP) in human BEAS-2B bronchial epithelial cells exposed to concentrations of N-hydroxylated PhIP ranging from 1 x 10-6 to 5 x 10-10 M. The goal was to determine transcriptional dose response threshold (NOTEL) of human BEAS-2B bronchial epithelial cells exposed to the food and tobacco smoke borne carcinogen, 2-hydroxy-mino-1-methyl-6-phenylimidazo[4,5]pyridine (N-OH-PhIP). BEAS-2B cells at ~ 70% confluence were treated with doses of N-OH-PhIP that varied over five orders or magnitude. Triplicate cell cultures were exposed to either DMS (control) or nine different doses of N-OH-PhIP at concentrations ranging from 1 x 10-6 to 5 x 10-10 M.

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Project description:Human BEAS-2B bronchial epithelial cells were exposed directly at the air-liquid interphase towards exhaust gas and particles of a ship engine. The goal was to compare the responses towards different fuel combustions. The engine run either on diesel fuel (DF) or on Heavy Fuel Oil (HFO). The lung cells were exposed 3 times to each combustion aerosol (DF or HFO). The duration of the exposure was 4h. The cells were seeded into transwell-inserts 24h before exposure. Within each exposure 3 transwell-inserts were exposed to the complete aerosol and 3 transwell-inserts were exposed to the filtered aerosol. Effects of the complete aerosol were referenced against the filtered aerosol to determine the effects of the aerosol particles.

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