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Recent transcriptome analysis indicates that > 90% of human genes undergo alternative splicing, underscoring the contribution of differential RNA processing to diverse proteomes in higher eukaryotic cells. The polypyrimidine tract-binding protein PTB is a well-characterized splicing repressor, but PTB knockdown causes both exon inclusion and skipping. Genome-wide mapping of PTB-RNA interactions...
Vascular development begins when mesodermal cells differentiate into endothelial cells, which then form primitive vessels. It has been hypothesized that endothelial-specific gene expression may be regulated combinatorially, but the transcriptional mechanisms governing specificity in vascular gene expression remain incompletely understood. Here, we identify a 44 bp transcriptional enhancer that is...
GLUT3 glucose transporter gene expression is confined to neurons, while GLUT1 gene expression is limited to endothelial cells in normal brain. Thus far, neither of the GLUT genes has been shown to be consistently expressed in glial cells in adult brain in vivo under normal conditions. However, GLUT gene expression may be aberrant in human brain glial tumors. The present investigation shows that the...
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