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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Complementation of human papillomavirus type 16 E6 and E7 by Jagged1-specific Notch1-phosphatidylinositol 3-kinase signaling involves pleiotropic oncogenic functions independent of CBF1;Su(H);Lag-1 activation.

We have analyzed the induction and role of phosphatidylinositol 3-kinase (PI3K) by Notch signaling in human papillomavirus (HPV)-derived cancers. Jagged1, in contrast to Delta1, is preferentially upregulated in human cervical tumors. Jagged1 and not Delta1 expression sustained in vivo tumors by HPV16 oncogenes in HaCaT cells. Further, Jagged1 expression correlates with the rapid induction of PI3K-mediated epithelial-mesenchymal transition in both HaCaT cells and a human cervical tumor-derived cell line, suggestive of Delta1;Serrate/Jagged;Lag2 ligand-specific roles. Microarray analysis and dominant-negatives reveal that Notch-PI3K oncogenic functions can be independent of CBF1;Su(H);Lag-1 activation and instead relies on Deltex1, an alternative Notch effector.[1]


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