[No authors listed]
Müller cells have recently been found to produce select angiogenic substances. In choosing a more comprehensive approach, we wanted to study the genomic response of Müller cells to hypoxia to identify novel angiogenic genes. An established Müller cell line (rMC-1) was exposed to standard or hypoxic conditions. We analyzed gene expression with three independent microarrays and determined differential expression levels compared to normoxia. Selected genes were confirmed by real-time PCR (RTPCR). Subcellular localization of proteins was examined by immunocytochemistry. A network-based pathway analysis was performed to investigate how those genes may contribute to angiogenesis. We found 19,004 of 28,000 known rat genes expressed in Müller cells. 211 genes were upregulated by hypoxia 1.5 to 14.9-fold (p<0.001, FDR
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