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Suh, Pann-Ghill
BioSignal Network Lab (BSN)
Research Interests
  • Signal transduction, cancer, metabolism, phospholipase C

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Cbl competitively inhibits epidermal growth factor-induced activation of phospholipase C-gamma 1

Cited 20 times inthomson ciCited 16 times inthomson ci
Title
Cbl competitively inhibits epidermal growth factor-induced activation of phospholipase C-gamma 1
Author
Choi, Jang HyunBae, SSPark, JBHa, SHSong, HKim, JHCocco, LRyu, SHSuh, Pann-Ghill
Issue Date
2003-04
Publisher
KOREAN SOC MOLECULAR & CELLULAR BIOLOGY
Citation
MOLECULES AND CELLS, v.15, no.2, pp.245 - 255
Abstract
Phospholipase C-gamma1 (PLC-gamma1) plays pivotal roles in cellular growth and proliferation through its two Src homology (SH) 2 domains and its single SH3 domain, which interact with signaling molecules in response to various growth factors and hormones. However, the role of the SH domains in the growth factor-induced regulation of PLC-gamma1 is unclear. By peptide-mass fingerprinting analysis we have identified Cbl as a binding protein for the SH3 domain of PLC-gamma1 from rat pheochromatocyte PC12 cells. Association of Cbl with PLC-gamma1 was induced by epidermal growth factor (EGF) but not by nerve growth factor (NGF). Upon EGF stimulation, both Cbl and PLC-gamma1 were recruited to the activated EGF receptor through their SH2 domains. Mutation of the SH2 domains of either Cbl or PLC-gamma1 abrogated the EGF-induced interaction of PLC-gamma1 with Cbl, indicating that SH2-mediated translocation is essential for the association of PLC-gamma1 and Cbl. Overexpression of Cbl attenuated EGF-induced tyrosine phosphorylation and the subsequent activation of PLC-gamma1 by interfering competitively with the interaction between PLC-gamma1 and EGFR. Taken together, these results provide the first indications that Cbl may be a negative regulator of intracellular signaling following EGF-induced PLC-gamma1 activation.
URI
https://scholarworks.unist.ac.kr/handle/201301/7284
URL
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0038266133
ISSN
1016-8478
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BIO_Journal Papers
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