Platelet derived growth factors (PDGFs) are required for vascular development, cranial and cardiac neural crest cells, somitic mesoderm, extraembryonic lineages and in the kidney. The mechanisms by which they control cell proliferation, survival and migration have been deciphered in cultured cells, but the identity of the target genes that mediate such pleiotropic functions in development and the adult remain unknown. This proposal focuses on identifying PDGF targets using a novel platform, the gene trap array, in which thousands of cDNAs derived from gene trap disrupted loci in ES cells are spotted on DNA arrays. This approach combines all of the power of DNA array technologies with the possibility of readily generating mutant mice from the frozen ES cell stocks. The physiological roles of a subset of regulated genes will be assessed by deriving mutant mice from the trapped ES cell clones. Target genes will be further characterized by establishing if they are specific for one or the other PDGFR and if they are subject to regulation by other signaling pathways. Conditional gene trap vectors will be generated that allow spatio-temporal elimination of gene activity and the generation of allelic series at the trapped loci. The Gene Trap Array will be expanded to 10,000 mutant ES cell clones and genes mutated by these vectors will be identified by sequencing and their identity will be listed on a web-based platform. Critical components of PDGF signaling will be identified in neural crest cells, using two complementary approaches, the gene trap array or gain-of-function gene trap mutagenesis in a PDGFalphaR sensitized background. Gain-of-function alleles that synergize with a PDGFalphaR mutation will be converted to loss of function alleles to study the normal function of the gene. These studies may shed insight on birth defects associated with abnormal neural crest development, such as cleft palate or DiGeorge Syndrome.

Agency
National Institute of Health (NIH)
Institute
Eunice Kennedy Shriver National Institute of Child Health & Human Development (NICHD)
Type
Research Project (R01)
Project #
5R01HD024875-20
Application #
7341588
Study Section
Cell Development and Function Integrated Review Group (CDF)
Program Officer
Coulombe, James N
Project Start
1989-01-01
Project End
2008-08-31
Budget Start
2008-01-01
Budget End
2008-08-31
Support Year
20
Fiscal Year
2008
Total Cost
$322,286
Indirect Cost
Name
Fred Hutchinson Cancer Research Center
Department
Type
DUNS #
078200995
City
Seattle
State
WA
Country
United States
Zip Code
98109
Zou, Hongyan; Feng, Rui; Huang, Yong et al. (2015) Double minute amplification of mutant PDGF receptor ? in a mouse glioma model. Sci Rep 5:8468
Friedel, Roland H; Friedel, Caroline C; Bonfert, Thomas et al. (2013) Clonal expansion analysis of transposon insertions by high-throughput sequencing identifies candidate cancer genes in a PiggyBac mutagenesis screen. PLoS One 8:e72338
Olson, Lorin E; Soriano, Philippe (2011) PDGFR? signaling regulates mural cell plasticity and inhibits fat development. Dev Cell 20:815-26
Friedel, Roland H; Soriano, Philippe (2010) Gene trap mutagenesis in the mouse. Methods Enzymol 477:243-69
Raymond, Christopher S; Soriano, Philippe (2010) ROSA26Flpo deleter mice promote efficient inversion of conditional gene traps in vivo. Genesis 48:603-6
Wassarman, Paul M; Soriano, Philippe M (2010) Guide to techniques in mouse development. Preface. Methods Enzymol 476:xix
Olson, Lorin E; Soriano, Philippe (2009) Increased PDGFRalpha activation disrupts connective tissue development and drives systemic fibrosis. Dev Cell 16:303-13
Bush, Jeffrey O; Soriano, Philippe (2009) Ephrin-B1 regulates axon guidance by reverse signaling through a PDZ-dependent mechanism. Genes Dev 23:1586-99
Schmahl, Jennifer; Rizzolo, Kamran; Soriano, Philippe (2008) The PDGF signaling pathway controls multiple steroid-producing lineages. Genes Dev 22:3255-67
Davy, Alice; Soriano, Philippe (2007) Ephrin-B2 forward signaling regulates somite patterning and neural crest cell development. Dev Biol 304:182-93

Showing the most recent 10 out of 51 publications