PMID:15457211

Citation	Ishimaru, S, Ueda, R, Hinohara, Y, Ohtani, M and Hanafusa, H (2004) PVR plays a critical role via JNK activation in thorax closure during Drosophila metamorphosis. EMBO J. 23:3984-94
Abstract	PVR, the Drosophila homolog of the PDGF/VEGF receptor, has been implicated in border cell migration during oogenesis and hemocyte migration during embryogenesis. It was earlier shown that Mbc, a CDM family protein, and its effector, Rac, transduced the guidance signal from PVR during border cell migration. Here we demonstrate that PVR is also required for the morphogenetic process, thorax closure, during metamorphosis. The results of genetic and biochemical experiments indicate that PVR activates the JNK pathway. We present evidence showing Crk (an adaptor molecule), Mbc, ELMO (a homolog of Caenorhabditis elegans CED-12 and mammalian ELMO), and Rac to be mediators of JNK activation by PVR. In addition, we suppose that not only Rac but also Cdc42 is activated and involved in JNK activation downstream of PVR.
Links	PubMed PMC524349 Online version:10.1038/sj.emboj.7600417
Keywords	Animals; Cells, Cultured; Cytoskeletal Proteins/metabolism; Drosophila/cytology; Drosophila/growth & development; Drosophila/physiology; Drosophila Proteins/chemistry; Drosophila Proteins/genetics; Drosophila Proteins/metabolism; Embryo, Nonmammalian; Insect Proteins/chemistry; Insect Proteins/genetics; Insect Proteins/metabolism; JNK Mitogen-Activated Protein Kinases/metabolism; Metamorphosis, Biological; Morphogenesis; RNA Interference; Receptor Protein-Tyrosine Kinases/chemistry; Receptor Protein-Tyrosine Kinases/genetics; Receptor Protein-Tyrosine Kinases/metabolism; Signal Transduction; Transgenes; cdc42 GTP-Binding Protein/metabolism; rac GTP-Binding Proteins/metabolism
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