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Genomic-scale analysis of gene expression profiles in TNF-alpha treated human umbilical vein endothelial cells

, : Genomic-scale analysis of gene expression profiles in TNF-alpha treated human umbilical vein endothelial cells. Inflammation Research 51(7): 332-341

Objective and design: TNF-alpha is a potent proinflammatory cytokine that plays an important role in immunity and inflammation, and in the control of cell proliferation, differentiation and programmed cell death. However, it is known that TNF-alpha is also the founding member of a still growing family of cytokines with diverse bioregulative functions. Its detailed molecular mechanisms on endothelial activation and injury remain to be elucidated. This study was aimed at determining genomic-scale gene expression profiles in TNF-alpha treated human endothelial cells. Materials and methods: In this study cultured human umbilical vein endothelial cells (HUVECs) were stimulated with TNF-alpha (10 ng/ml) for 2 and 16 h, respectively, and the gene expression pattern was profiled using a cDNA array representing 14000 gene/cDNA clusters. Results: In total, 72 known human genes were identified the expression levels of which altered over 2-fold in response to TNF-alpha stimulation. Such alteration was confirmed for IL-8 and MCP-1, with an independent quantitative mRNA assay. It was observed that genes with related biological functions were often temporally co-regulated. Conclusions: These results indicate the transcriptional pathways mediated by TNF-alpha inside the HUVECs. Expression profiling in HUVECs responding to TNF-alpha stimulation should give an understanding of the molecular mechanisms involved in vascular inflammation.


PMID: 12146724

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