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Not all substrates are treated equally: Implications for mTOR, rapamycin-resistance, and cancer therapy
Open accessAbstract
The mTORC1 signaling pathway is a critical regulator of cell growth and is hyper activated in many different cancers. Rapamycin, an allosteric inhibitor of mTORC1, has been approved for treatment against renal cell carcinomas and is being evaluated for other cancers. Mechanistically, mTORC1 controls cell growth in part through its two well-characterized substrates S6K1 and 4E-BP1. In this review, we discuss the implications of a recent finding that showed differential inhibition of S6K1 and 4E-BP1 by rapamycin, leading to cell-type-specific repression of cap-dependent translation. We discuss potential mechanisms for this effect, and propose that mTOR-specific kinase inhibitors, instead of rapamycin, should be considered for mTOR-targeted cancer therapy.
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Cited by
mTOR kinase structure, mechanism and regulation
Yang, H., Rudge, D. G., Koos, J. D., Vaidialingam, B., Yang, H. J., & Pavletich, N. P. (2013) · Nature · doi:10.1038/nature12122 · Cited by 1,075
Regulation and function of ribosomal protein S6 kinase (S6K) within mTOR signalling networks
Magnuson, B., Ekim, B., & Fingar, D. C. (2012) · Biochemical Journal · doi:10.1042/bj20110892 · Cited by 1,015
Yu, Y., Yoon, S.-O., Poulogiannis, G., Yang, Q., Ma, X. M., Villén, J., Kubica, N., Hoffman, G. R., Cantley, L. C., Gygi, S. P., et al. (2011) · Science · doi:10.1126/science.1199484 · Cited by 854
Self-citationTargeting the translation machinery in cancer
Bhat, M., Robichaud, N., Hulea, L., Sonenberg, N., Pelletier, J., & Topisirovic, I. (2015) · Nature Reviews Drug Discovery · doi:10.1038/nrd4505 · Cited by 799
Chappell, W. H., Steelman, L. S., Long, J. M., Kempf, R. C., Abrams, S. L., Franklin, R. A., Bäsecke, J., Stivala, F., Donia, M., Fagone, P., et al. (2011) · Oncotarget · doi:10.18632/oncotarget.240 · Cited by 510
Metadata
- Authors
- Choo, A. Y., & Blenis, J.
- Venue
- Cell Cycle
- Publisher
- Informa UK Limited
- Published
- 2009-02-15
- Volume
- 8
- Issue
- 4
- Pages
- 567-572
- ISSN
- 1538-4101 (ISSN-L)
- 1551-4005
- OpenAlex
- W2067298405
- Cited by
- 210
- References
- 0
- FWCI
- 8.52
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Choo, A. Y., & Blenis, J. (2009). Not all substrates are treated equally: Implications for mTOR, rapamycin-resistance, and cancer therapy. Cell Cycle. https://doi.org/10.4161/cc.8.4.7659
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