Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/9459
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Type: Journal article
Title: A multi-protein complex containing cold shock domain (Y-box) and polypyrimidine tract binding proteins forms on the vascular endothelial growth factor mRNA: Potential role in mRNA stabilization
Author: Coles, L.
Bartley, M.
Bert, A.
Hunter, J.
Polyak, S.
Diamond, P.
Vadas, M.
Goodall, G.
Citation: The Federation of European Biochemical Societies (FEBS) Journal, 2004; 271(3):648-660
Publisher: Blackwell Publishing Ltd
Issue Date: 2004
ISSN: 1742-464X
1432-1033
Statement of
Responsibility: 
Leeanne S. Coles, M. Antonetta Bartley, Andrew Bert, Julie Hunter, Steven Polyak, Peter Diamond, Mathew A. Vadas and Gregory J. Goodall
Abstract: Vascular endothelial growth factor (VEGF) is a key regulator of angiogenesis and post-transcriptional regulation plays a major role in VEGF expression. Both the 5'- and 3'-UTR are required for VEGF post-transcriptional regulation but factors binding to functional sequences within the 5'-UTR have not been fully characterized. We report here the identification of complexes, binding to the VEGFmRNA 5'- and 3'-UTR, that contain cold shock domain (CSD) and polypyrimidine tract binding (PTB) RNA binding proteins. Analysis of the CSD/PTB binding sites revealed a potential role in VEGF mRNA stability, in both noninduced and induced conditions, demonstrating a general stabilizing function. Such a stabilizing mechanism had not been reported previously for the VEGF gene. We further found that the CSD/PTB-containing complexes are large multiprotein complexes that are most likely preformed in solution and we demonstrate that PTB is associated with the VEGF mRNA in vivo. Complex formation between CSD proteins and PTB has not been reported previously. Analysis of the CSD/PTB RNA binding sites revealed a novel CSD protein RNA recognition site and also demonstrated that CSD proteins may direct the binding of CSD/PTB complexes. We found the same complexes binding to an RNA-stabilizing element of another growth factor gene, suggesting a broader functional role for the CSD/PTB complexes. Finally, as the VEGF gene is also regulated at the transcriptional level by CSD proteins, we propose a combined transcriptional/post-transcriptional role for these proteins in VEGF and other growth factor gene regulation.
Keywords: Jurkat Cells
Humans
Vascular Endothelial Growth Factor A
Carrier Proteins
Polypyrimidine Tract-Binding Protein
DNA-Binding Proteins
CCAAT-Enhancer-Binding Proteins
Heat-Shock Proteins
RNA Probes
RNA, Messenger
3' Untranslated Regions
5' Untranslated Regions
Interleukin-2
Chromatography, Gel
Base Sequence
Plasmids
Description: The definitive version is available at www.blackwell-synergy.com
Provenance: The European Journal of Biochemistry is now titled FEBS Journal.
DOI: 10.1111/j.1432-1033.2003.03968.x
Published version: http://dx.doi.org/10.1111/j.1432-1033.2003.03968.x
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