Identification of the JNK signaling pathway as a functional target of the tumor suppressor PTEN Journal Article
| Authors: | Vivanco, I.; Palaskas, N.; Tran, C.; Finn, S. P.; Getz, G.; Kennedy, N. J.; Jiao, J.; Rose, J.; Xie, W.; Loda, M.; Golub, T.; Mellinghoff, I. K.; Davis, R. J.; Wu, H.; Sawyers, C. L. |
| Article Title: | Identification of the JNK signaling pathway as a functional target of the tumor suppressor PTEN |
| Abstract: | Although most oncogenic phenotypes of PTEN loss are attributed to AKT activation, AKT alone is not sufficient to induce all of the biological activities associated with PTEN inactivation. We searched for additional PTEN-regulated pathways through gene set enrichment analysis (GSEA) and identified genes associated with JNK activation. PTEN null cells exhibit higher JNK activity, and genetic studies demonstrate that JNK functions parallel to and independently of AKT. Furthermore, PTEN deficiency sensitizes cells to JNK inhibition and negative feedback regulation of PI3K was impaired in PTEN null cells. Akt and JNK activation are highly correlated in human prostate cancer. These findings implicate JNK in PI3K-driven cancers and demonstrate the utility of GSEA to identify functional pathways using genetically defined systems. © 2007 Elsevier Inc. All rights reserved. |
| Keywords: | signal transduction; protein kinase b; human tissue; human cell; cancer growth; nonhuman; animal cell; mouse; animals; mice; mice, knockout; gene expression profiling; signaling; stress activated protein kinase; enzyme activation; cell transformation, neoplastic; prostate cancer; tumor suppressor gene; enzyme phosphorylation; cell transformation; 1-phosphatidylinositol 3-kinase; proto-oncogene proteins c-akt; pten phosphohydrolase; cellcycle; gene inactivation; negative feedback; malignant transformation; mitogen-activated protein kinase kinases; genes, tumor suppressor; feedback, biochemical; jnk mitogen-activated protein kinases; pten gene; protein-tyrosine-phosphatase; phosphatidylinositol kinase; protein patched 2 |
| Journal Title: | Cancer Cell |
| Volume: | 11 |
| Issue: | 6 |
| ISSN: | 1535-6108 |
| Publisher: | Cell Press |
| Date Published: | 2007-06-12 |
| Start Page: | 555 |
| End Page: | 569 |
| Language: | English |
| DOI: | 10.1016/j.ccr.2007.04.021 |
| PUBMED: | 17560336 |
| PROVIDER: | scopus |
| DOI/URL: | |
| Notes: | --- - "Cited By (since 1996): 63" - "Export Date: 17 November 2011" - "CODEN: CCAEC" - "Source: Scopus" |
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