Please note that we have stopped the regular imports of Gene Expression Omnibus (GEO) data into ArrayExpress. This may not be the latest version of this experiment.
E-GEOD-16067 - Gene expression analysis in control and HIF-2 alpha deficient murine lung endothelial cells under hypoxia
Released on 15 July 2009, last updated on 2 June 2014
Journal : Blood. 2009 Jul 9;114(2):469-77. Epub 2009 May 13. Title : Endothelial deletion of hypoxia-inducible factor-2alpha (HIF-2alpha) alters vascular function and tumor angiogenesis. Authors : Skuli N, Liu L, Runge A, Wang T, Yuan L, Patel S, Iruela-Arispe L, Simon MC, Keith B. Abstract : Hypoxia-inducible factor-2alpha (HIF-2alpha) is highly expressed in embryonic vascular endothelial cells (ECs) and activates the expression of target genes whose products modulate vascular function and angiogenesis. In this report, we describe a genetic model designed to test the physiologic consequences of deleting HIF-2alpha in murine endothelial cells. Surprisingly, mice with HIF-2alpha-deficient ECs developed normally but displayed a variety of phenotypes, including increased vessel permeability, aberrant endothelial cell ultrastructure, and pulmonary hypertension. Moreover, these animals exhibited defective tumor angiogenesis associated with increased hypoxic stress and tumor cell apoptosis. Immortalized HIF-2alpha-deficient ECs displayed decreased adhesion to extracellular matrix proteins and expressed reduced levels of transcripts encoding fibronectin, integrins, endothelin B receptor, angiopoietin 2, and delta-like ligand 4 (Dll4). Together, these data identify unique cell-autonomous functions for HIF-2alpha in vascular endothelial cells. Keywords: Murine lung endothelial cell study Cnt1,2 and 3 (Hif-2a floxed/floxed) cells were subjected to 0.5% oxygen treatment for 16hrs and KO1,2 and 3 (Hif-2a knockout) cells were subjected to 0.5% oxygen treatment for 16hrs.
transcription profiling by array
Nicolas Skuli <firstname.lastname@example.org>, Anja Runge, Brian Keith, Lijun Yuan, Liping Liu, Luisa Iruela-Arispe, M C Simon, Sunny Patel, Tao Wang
Endothelial deletion of hypoxia-inducible factor-2alpha (HIF-2alpha) alters vascular function and tumor angiogenesis. Skuli N, Liu L, Runge A, Wang T, Yuan L, Patel S, Iruela-Arispe L, Simon MC, Keith B. , PMID:19439736