Identification of an exonic splicing silencer in exon 6A of the human VEGF gene |
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Authors: | Rui Wang Ronald G Crystal Neil R Hackett |
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Affiliation: | (1) Department of Genetic Medicine, Weill Cornell Medical College, New York, NY, USA |
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Abstract: | Background The different isoforms of vascular endothelial growth factor (VEGF) play diverse roles in vascular growth, structure and function. Alternative splicing of the VEGF gene results in the expression of three abundant isoforms: VEGF121, VEGF165 and VEGF189. The mRNA for VEGF189 contains the alternatively spliced exon 6A whereas the mRNA for VEGF165 lacks this exon. The objective of this study was to identify the cis elements that control utilization of exon 6A. A reporter minigene was constructed (pGFP-E6A) containing the coding sequence for GFP whose translation was dependent on faithful splicing for removal of the VEGF exon 6A. To identify cis-acting splicing elements, sequential deletions were made across exon 6A in the pGFP-E6A plasmid. |
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