Abstract
Ras interacts with many downstream effectors that regulate complex cytoplasmic signaling networks. In this issue, Gupta et al. (2007) use mouse models of Ras-mediated tumorigenesis to show that the interaction of Ras with a single isoform of phosphatidylinositol 3-kinase (PI3K), called p110alpha (PIK3CA), is critical for tumor formation. This result will stimulate re-evaluation of pharmacological approaches to target Ras for cancer treatment.
MeSH terms
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Animals
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Cells, Cultured
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Class I Phosphatidylinositol 3-Kinases
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Humans
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Metabolic Networks and Pathways*
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Mice
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Neoplasms / drug therapy
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Neoplasms / metabolism
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Phosphatidylinositol 3-Kinases / genetics
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Phosphatidylinositol 3-Kinases / metabolism*
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Signal Transduction
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ras Proteins / antagonists & inhibitors
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ras Proteins / metabolism*
Substances
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Phosphatidylinositol 3-Kinases
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1-phosphatidylinositol 3-kinase p110 subunit, mouse
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Class I Phosphatidylinositol 3-Kinases
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ras Proteins