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- W2000926872 endingPage "e1000374" @default.
- W2000926872 startingPage "e1000374" @default.
- W2000926872 abstract "Gliomas, the most common malignant tumors of the nervous system, frequently harbor mutations that activate the epidermal growth factor receptor (EGFR) and phosphatidylinositol-3 kinase (PI3K) signaling pathways. To investigate the genetic basis of this disease, we developed a glioma model in Drosophila. We found that constitutive coactivation of EGFR-Ras and PI3K pathways in Drosophila glia and glial precursors gives rise to neoplastic, invasive glial cells that create transplantable tumor-like growths, mimicking human glioma. Our model represents a robust organotypic and cell-type-specific Drosophila cancer model in which malignant cells are created by mutations in signature genes and pathways thought to be driving forces in a homologous human cancer. Genetic analyses demonstrated that EGFR and PI3K initiate malignant neoplastic transformation via a combinatorial genetic network composed primarily of other pathways commonly mutated or activated in human glioma, including the Tor, Myc, G1 Cyclins-Cdks, and Rb-E2F pathways. This network acts synergistically to coordinately stimulate cell cycle entry and progression, protein translation, and inappropriate cellular growth and migration. In particular, we found that the fly orthologs of CyclinE, Cdc25, and Myc are key rate-limiting genes required for glial neoplasia. Moreover, orthologs of Sin1, Rictor, and Cdk4 are genes required only for abnormal neoplastic glial proliferation but not for glial development. These and other genes within this network may represent important therapeutic targets in human glioma." @default.
- W2000926872 created "2016-06-24" @default.
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- W2000926872 date "2009-02-13" @default.
- W2000926872 modified "2023-10-17" @default.
- W2000926872 title "A Drosophila Model for EGFR-Ras and PI3K-Dependent Human Glioma" @default.
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- W2000926872 doi "https://doi.org/10.1371/journal.pgen.1000374" @default.
- W2000926872 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/2636203" @default.
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