Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

MRNA regulation in normal or TNF-a/IL-4-activated bronchial epithelial cells (BEAS-2B)

ABSTRACT: Illumina microarray experiment on BEAS-2B cells. Cells were seeded 24 h before TNF-a/IL-4 (50 ng/ml) treatment that lasted for 18 h. Cytoplasmic RNA of both normal and activated BEAS-2B cells were collected for microarray. Cells were seeded 24 h before TNF-a/IL-4 (50 ng/ml) treatment that lasted for 18 h. Biological triplicate control and IL4/TNf samples.

ORGANISM(S): Homo sapiens

SUBMITTER: Ann-Bin Shyu

PROVIDER: E-GEOD-13119 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Coordinated changes in mRNA turnover, translation, and RNA processing bodies in bronchial epithelial cells following inflammatory stimulation.

Zhai Yuxin Y Zhong Zhenping Z Chen Chyi-Ying A CY Xia Zhenfang Z Song Ling L Blackburn Michael R MR Shyu Ann-Bin AB

Molecular and cellular biology 20081020 24

Bronchial epithelial cells play a pivotal role in airway inflammation, but little is known about posttranscriptional regulation of mediator gene expression during the inflammatory response in these cells. Here, we show that activation of human bronchial epithelial BEAS-2B cells by proinflammatory cytokines interleukin-4 (IL-4) and tumor necrosis factor alpha (TNF-alpha) leads to an increase in the mRNA stability of the key chemokines monocyte chemotactic protein 1 and IL-8, an elevation of the g ...[more]

PMID: 18936174

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Project description:As environmental pollutants and possible carcinogens, carbon nanotubes (CNTs) have recently been found to promote tumorigenesis and tumor metastasis after long-term pulmonary exposure. However, whether CNT-induced carcinogenesis can be inherited and last for generations remains unknown. Here, we establish a post-chronic single-walled carbon nanotubes (SWCNTs) exposed human bronchial epithelium BEAS-2B cell model to investigate SWCNTs-induced carcinogenesis. At a tolerated sublethal dose level, post-chronic SWCNTs exposure significantly increases the migration and colony formation abilities of BEAS-2B cells, leading to cell malignant transformation. Notably, the malignant transformation of BEAS-2B cells is irreversible within 60 days recovery period after SWCNTs exposure, and the malignant transformation activities of cells gradually increase during the recovery period. Mechanism analyses show that post-chronic exposure to SWCNTs causes substantial DNA methylation and transcriptome dysregulation of BEAS-2B cells. Subsequent enrichment and clinical database analyses reveal that differentially expressed/methylated genes of BEAS-2B cells are enriched in cancer-related biological pathways, and several of these genes are validated in lung cancer patients. As environmental pollutants and possible carcinogens, carbon nanotubes (CNTs) have recently been found to promote tumorigenesis and tumor metastasis after long-term pulmonary exposure. However, whether CNT-induced carcinogenesis can be inherited and last for generations remains unknown. Here, we establish a post-chronic single-walled carbon nanotubes (SWCNTs) exposed human bronchial epithelium BEAS-2B cell model to investigate SWCNTs-induced carcinogenesis. At a tolerated sublethal dose level, post-chronic SWCNTs exposure significantly increases the migration and colony formation abilities of BEAS-2B cells, leading to cell malignant transformation. Notably, the malignant transformation of BEAS-2B cells is irreversible within 60 days recovery period after SWCNTs exposure, and the malignant transformation activities of cells gradually increase during the recovery period. Mechanism analyses show that post-chronic exposure to SWCNTs causes substantial DNA methylation and transcriptome dysregulation of BEAS-2B cells. Subsequent enrichment and clinical database analyses reveal that differentially expressed/methylated genes of BEAS-2B cells are enriched in cancer-related biological pathways, and several of these genes are validated in lung cancer patients.

Dataset Information

MRNA regulation in normal or TNF-a/IL-4-activated bronchial epithelial cells (BEAS-2B)

Publications

Coordinated changes in mRNA turnover, translation, and RNA processing bodies in bronchial epithelial cells following inflammatory stimulation.

Similar Datasets

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