Essential Role of the Tyrosine Kinase Substrate Phospholipase C-γ 1 in Mammalian Growth and Development

The activation of many tyrosine kinases leads to the phosphorylation and activation of phospholipase C-γ 1 (PLC-γ 1). To examine the biological function of this protein, homologous recombination has been used to selectively disrupt the Plcg1 gene in mice. Homozygous disruption of Plcg1 results in em...

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Veröffentlicht in:Proceedings of the National Academy of Sciences - PNAS 1997-04, Vol.94 (7), p.2999-3003
Hauptverfasser: Ji, Qun-Sheng, Winnier, Glenn E., Niswender, Kevin D., Horstman, Debra, Wisdom, Ron, Magnuson, Mark A., Carpenter, Graham
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Sprache:eng
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Zusammenfassung:The activation of many tyrosine kinases leads to the phosphorylation and activation of phospholipase C-γ 1 (PLC-γ 1). To examine the biological function of this protein, homologous recombination has been used to selectively disrupt the Plcg1 gene in mice. Homozygous disruption of Plcg1 results in embryonic lethality at approximately embryonic day (E) 9.0. Histological analysis indicates that Plcg1 (-/-) embryos appear normal at E 8.5 but fail to continue normal development and growth beyond E 8.5-E9.0. These results clearly demonstrate that PLC-γ 1 with, by inference, its capacity to mobilize second messenger molecules is an essential signal transducing molecule whose absence is not compensated by other signaling pathways or other genes encoding PLC isozymes.
ISSN:0027-8424
1091-6490
DOI:10.1073/pnas.94.7.2999