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An inhibitor of mTOR reduces neoplasia and normalizes p70/S6 kinase activity in Pten+/−mice
Open accessAbstract
PTEN phosphatase acts as a tumor suppressor by negatively regulating the phosphoinositide 3-kinase (PI3K) signaling pathway. It is unclear which downstream components of this pathway are necessary for oncogenic transformation. In this report we show that transformed cells of PTEN+/−mice have elevated levels of phosphorylated Akt and activated p70/S6 kinase associated with an increase in proliferation. Pharmacological inactivation of mTOR/RAFT/FRAP reduced neoplastic proliferation, tumor size, and p70/S6 kinase activity, but did not affect the status of Akt. These data suggest that p70/S6K and possibly other targets of mTOR contribute significantly to tumor development and that inhibition of these proteins may be therapeutic for cancer patients with deranged PI3K signaling.
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Cites
Isolation of a Protein Target of the FKBP12-Rapamycin Complex in Mammalian Cells
Sabers, C. J., Martin, M. M., Brunn, G. J., Williams, J. M., Dumont, F. J., Wiederrecht, G., & Abraham, R. T. (1995) · Journal of Biological Chemistry · doi:10.1074/jbc.270.2.815 · Cited by 887
Phosphorylation and Activation of p70 s6k by PDK1
Pullen, N., Dennis, P. B., Andjelkovic, M., Dufner, A., Kozma, S. C., Hemmings, B. A., & Thomas, G. (1998) · Science · doi:10.1126/science.279.5351.707 · Cited by 826
Cited by
Upstream and downstream of mTOR
Hay, N., & Sonenberg, N. (2004) · Genes & Development · doi:10.1101/gad.1212704 · Cited by 4,181
The evolution of phosphatidylinositol 3-kinases as regulators of growth and metabolism
Engelman, J. A., Luo, J., & Cantley, L. C. (2006) · Nature Reviews Genetics · doi:10.1038/nrg1879 · Cited by 3,330
TSC2 is phosphorylated and inhibited by Akt and suppresses mTOR signalling
Inoki, K., Li, Y., Zhu, T., Wu, J., & Guan, K.-L. (2002) · Nature Cell Biology · doi:10.1038/ncb839 · Cited by 3,083
Defining the role of mTOR in cancer
Guertin, D. A., & Sabatini, D. M. (2007) · Cancer Cell · doi:10.1016/j.ccr.2007.05.008 · Cited by 2,833
Prolonged Rapamycin Treatment Inhibits mTORC2 Assembly and Akt/PKB
Sarbassov, D. D., Ali, S. M., Sengupta, S., Sheen, J.-H., Hsu, P. P., Bagley, A. F., Markhard, A. L., & Sabatini, D. M. (2006) · Molecular Cell · doi:10.1016/j.molcel.2006.03.029 · Cited by 2,365
Metadata
- Authors
- Podsypanina, K., Lee, R. T., Politis, C., Hennessy, I., Crane, A., Puc, J., Neshat, M., Wang, H., Yang, L., Gibbons, J., Frost, P., Dreisbach, V., Blenis, J., Gaciong, Z., Fisher, P., Sawyers, C., Hedrick-Ellenson, L., & Parsons, R.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 2001-08-14
- Volume
- 98
- Issue
- 18
- Pages
- 10320-10325
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W1988609792
- Cited by
- 569
- References
- 2
- FWCI
- 18.13
- Type
- journal article
- Language
- en
- Open access
- green
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- Podsypanina, K., Lee, R. T., Politis, C., Hennessy, I., Crane, A., Puc, J., Neshat, M., Wang, H., Yang, L., Gibbons, J., Frost, P., Dreisbach, V., Blenis, J., Gaciong, Z., Fisher, P., Sawyers, C., Hedrick-Ellenson, L., & Parsons, R. (2001). An inhibitor of mTOR reduces neoplasia and normalizes p70/S6 kinase activity in Pten+/−mice. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.171060098
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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