Title |
The Receptor Tyrosine Kinase Regulator Sprouty1 Is a Target of the Tumor Suppressor WT1 and Important for Kidney Development*
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Published in |
Journal of Biological Chemistry, July 2003
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DOI | 10.1074/jbc.m306425200 |
Pubmed ID | |
Authors |
Isabelle Gross, Debra J. Morrison, Deborah P. Hyink, Kylie Georgas, Milton A. English, Mathias Mericskay, Seiyu Hosono, David Sassoon, Patricia D. Wilson, Melissa Little, Jonathan D. Licht |
Abstract |
WT1 encodes a transcription factor involved in kidney development and tumorigenesis. Using representational difference analysis, we identified a new set of WT1 targets, including a homologue of the Drosophila receptor tyrosine kinase regulator, sprouty. Sprouty1 was up-regulated in cell lines expressing wild-type but not mutant WT1. WT1 bound to the endogenous sprouty1 promoter in vivo and directly regulated sprouty1 through an early growth response gene-1 binding site. Expression of Sprouty1 and WT1 overlapped in the developing metanephric mesenchyme, and Sprouty1, like WT1, plays a key role in the early steps of glomerulus formation. Disruption of Sprouty1 expression in embryonic kidney explants by antisense oligonucleotides reduced condensation of the metanephric mesenchyme, leading to a decreased number of glomeruli. In addition, sprouty1 was expressed in the ureteric tree and antisense-treated ureteric trees had cystic lumens. Therefore, sprouty1 represents a physiologically relevant target gene of WT1 during kidney development. |
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Geographical breakdown
Country | Count | As % |
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United Kingdom | 1 | 3% |
Australia | 1 | 3% |
Unknown | 28 | 93% |
Demographic breakdown
Readers by professional status | Count | As % |
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Professor > Associate Professor | 5 | 17% |
Student > Ph. D. Student | 4 | 13% |
Researcher | 4 | 13% |
Student > Bachelor | 3 | 10% |
Professor | 3 | 10% |
Other | 8 | 27% |
Unknown | 3 | 10% |
Readers by discipline | Count | As % |
---|---|---|
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Biochemistry, Genetics and Molecular Biology | 8 | 27% |
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Chemistry | 2 | 7% |
Neuroscience | 1 | 3% |
Other | 1 | 3% |
Unknown | 3 | 10% |