Cited by 4,181PI3K/AKT/mTOR signaling in cancerMetabolism, Diabetes, and CancerMuscle metabolism and nutrition

Upstream and downstream of mTOR

Open access
Hay, Nissim, Sonenberg, Nahum·2004·Genes & Development

Abstract

The evolutionarily conserved checkpoint protein kinase, TOR (target of rapamycin), has emerged as a major effector of cell growth and proliferation via the regulation of protein synthesis. Work in the last decade clearly demonstrates that TOR controls protein synthesis through a stunning number of downstream targets. Some of the targets are phosphorylated directly by TOR, but many are phosphorylated indirectly. In this review, we summarize some recent developments in this fast-evolving field. We describe both the upstream components of the signaling pathway(s) that activates mammalian TOR (mTOR) and the downstream targets that affect protein synthesis. We also summarize the roles of mTOR in the control of cell growth and proliferation, as well as its relevance to cancer and synaptic plasticity.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1101/gad.1212704

Cites

9 of 9 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • mTORC1 is an important regulator of cell proliferation and metabolism.

    “This pathway is an important regulator of cell proliferation and metabolism (Hay and Sonenberg, 2004; Guertin and Sabatini, 2007).”

    From Efficient genetic editing of human intestinal organoids using ribonucleoprotein-based CRISPR (2023) · cites this paper as Hay and Sonenberg, 2004

    The Abstract and the section on mTOR translational control, cell growth, and proliferation describe mTOR as a regulator of cell proliferation. The sections on upstream regulators and control by energy metabolism chiefly describe nutrients and cellular energy regulating mTOR, rather than establishing that mTORC1 regulates metabolism. Our copy therefore supports the proliferation part but not the metabolism part as stated. (LLM, conf=0.83)

    Experimental — accuracy not yet measured
  • mTORC1 tightly coordinates LTP and LTD, the molecular correlates of learning and memory.

    “In the brain, mTORC1 tightly coordinates different synaptic plasticities -long-term potentiation (LTP) and long-term depression (LTD) -the molecular correlates of learning and memory (2)(3)(4)(5).”

    From Analysis of proteins that rapidly change upon mechanistic/mammalian target of rapamycin complex 1 (mTORC1) repression identifies parkinson protein 7 (PARK7) as a novel protein aberrantly expressed in tuberous sclerosis complex (TSC) (2016) · cites this paper as [4]

    The section “mTOR function in synaptic plasticity, memory, and learning” (page unavailable) identifies LTP as a model of plasticity underlying learning and reports that rapamycin inhibits late LTP. It does not establish that mTORC1 tightly coordinates both LTP and LTD; the supplied passages and searches do not address LTD. (LLM, conf=0.88)

    Experimental — accuracy not yet measured

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 22

  1. Bernal, A. and Kimbrell, D.A. 2000. Drosophila Thor partici- pates in host immune defense and connects a translational regulator with innate immunity. Proc. Natl. Acad. Sci. 97: 6019-6024.
  2. Burnett, P.E., Barrow, R.K., Cohen, N.A., Snyder, S.H., and Sabatini, D.M. 1998. RAFT1 phosphorylation of the transla- tional regulators p70 S6 kinase and 4E-BP1. Proc. Natl. Acad. Sci. 95: 1432-1437.
  3. Cammalleri, M., Lutjens, R., Berton, F., King, A.R., Simpson, C., Francesconi, W., and Sanna, P.P. 2003. Time-restricted role for dendritic activation of the mTOR-p70S6K pathway in the induction of late-phase long-term potentiation in the CA1. Proc. Natl. Acad. Sci. 100: 14368-14373.
  4. Cantley, L.C. and Neel, B.G. 1999. New insights into tumor suppression: PTEN suppresses tumor formation by restrain- ing the phosphoinositide 3-kinase/AKT pathway. Proc. Natl. Acad. Sci. 96: 4240-4245.
  5. Casadio, A., Martin, K.C., Giustetto, M., Zhu, H.,Chen, M., Bartsch, D., Bailey, C.H., and Kandel, E.R. 1999. A transient, neuron-wide form of CREB-mediated long-term facilitation can be stabilized at specific synapses by local protein syn- thesis. Cell 99: 221-237.
  6. Chen, J., Zheng, X.F., Brown, E.J., and Schreiber, S.L. 1995. Iden- tification of an 11-kDa FKBP12-rapamycin-binding domain within the 289-kDa FKBP12-rapamycin-associated protein and characterization of a critical serine residue. Proc. Natl. Acad. Sci. 92: 4947-4951.
  7. Chiu, M.I., Katz, H., and Berlin, V. 1994. RAPT1, a mammalian homolog of yeast Tor, interacts with the FKBP12/rapamycin complex. Proc. Natl. Acad. Sci. 91: 12574-12578.
  8. Hall, M.N. 1996. The TOR signalling pathway and growth con- trol in yeast. Biochem. Soc. Trans. 24: 234-239.
  9. Hannan, K.M., Brandenburger, Y., Jenkins, A., Sharkey, K., Ca- vanaugh, A., Rothblum, L., Moss, T., Poortinga, G., McArthur, G.A., Pearson, R.B., et al. 2003. mTOR-depen- dent regulation of ribosomal gene transcription requires S6K1 and is mediated by phosphorylation of the carboxy- terminal activation domain of the nucleolar transcription factor UBF. Mol. Cell. Biol. 23: 8862-8877.
  10. Hershey, J.W.B. and Merrick, W.C. 2000. Pathway and mecha- nism of initiation of protein synthesis. In Translational con- trol of gene expression (ed. M.B. Mathews), pp. 33-88. Cold Spring Harbor Laboratory Press, Cold Spring Harbor, N.Y. Hershey, J.W.B. and Miyamoto, S. 2000. Translational control and cancer. In Translational control of gene expression (ed.
  11. M.B. Mathews), pp. 637-654. Cold Spring Harbor Laboratory Press, Cold Spring Harbor, N.Y. Houghton, P.J. and Huang, S. 2004. mTOR as a target for cancer therapy. Curr. Top. Microbiol. Immunol. 279: 339-359.
  12. Mathews, M.B., Sonenberg, N., and Hershey, J.W.B. 2000. Ori- gins and principles of translational control. In Translational control of gene expression (ed. M.B. Mathews), pp. 1-31. Cold Spring Harbor Laboratory Press, Cold Spring Harbor, N.Y. Matsumoto, S., Bandyopadhyay, A., Kwiatkowski, D.J., Maitra, U., and Matsumoto, T. 2002. Role of the Tsc1-Tsc2 complex in signaling and transport across the cell membrane in the fission yeast Schizosaccharomyces pombe. Genetics 161: 1053-1063.
  13. Meyuhas, O. and Hornstein, E. 2000. Translational control of TOP mRNAs. In Translational control of gene expression (ed. M.B. Mathews), pp. 671-694. Cold Spring Harbor Labo- ratory Press, Cold Spring Harbor, N.Y. Miron, M., Verdu, J., Lachance, P.E., Birnbaum, M.J., Lasko, P.F., and Sonenberg, N. 2001. The translational inhibitor 4E- BP is an effector of PI(3)K/Akt signalling and cell growth in Drosophila. Nat. Cell. Biol. 3: 596-601.
  14. Neshat, M.S., Mellinghoff, I.K., Tran, C., Stiles, B., Thomas, G., Petersen, R., Frost, P., Gibbons, J.J., Wu, H., and Sawyers, C.L. 2001. Enhanced sensitivity of PTEN-deficient tumors to inhibition of FRAP/mTOR. Proc. Natl. Acad. Sci. 98: 10314-10319.
  15. Peterson, R.T., Desai, B.N., Hardwick, J.S., and Schreiber, S.L. 1999. Protein phosphatase 2A interacts with the 70-kDa S6 kinase and is activated by inhibition of FKBP12-rapamycin associated protein. Proc. Natl. Acad. Sci. 96: 4438-4442.
  16. Podsypanina, K., Lee, R.T., Politis, C., Hennessy, I., Crane, A., Puc, J., Neshat, M., Wang, H., Yang, L., Gibbons, J., et al. 2001. An inhibitor of mTOR reduces neoplasia and normal- izes p70/S6 kinase activity in Pten +/-mice. Proc. Natl. Acad. Sci. 98: 10320-10325.
  17. Raught, B., Gingras, A.-C., and Sonenberg, N. 2000b. Regulation of ribosomal recruitment in eukaryotes. In Translational control of gene expression (ed. M.B. Mathews), pp. 245-294.
  18. Cold Spring Harbor Laboratory Press, Cold Spring Harbor, N.Y. Raught, B., Peiretti, F., Gingras, A.C., Livingstone, M., Shahba- zian, D., Mayeur, G.L., Polakiewicz, R.D., Sonenberg, N., and Hershey, J.W. 2004. Phosphorylation of eucaryotic trans- lation initiation factor 4B Ser422 is modulated by S6 kinases. EMBO J. 23: 1761-1769.
  19. Schmidt, A., Kunz, J., and Hall, M.N. 1996. TOR2 is required for organization of the actin cytoskeleton in yeast. Proc. Natl. Acad. Sci. 93: 13780-13785.
  20. Scott, P.H., Brunn, G.J., Kohn, A.D., Roth, R.A., and Lawrence Jr., J.C. 1998. Evidence of insulin-stimulated phosphoryla- tion and activation of the mammalian target of rapamycin mediated by a protein kinase B signaling pathway. Proc. Natl. Acad. Sci. 95: 7772-7777.
  21. Tang, S.J., Reis, G., Kang, H., Gingras, A.C., Sonenberg, N., and Schuman, E.M. 2002. A rapamycin-sensitive signaling path- way contributes to long-term synaptic plasticity in the hip- pocampus. Proc. Natl. Acad. Sci. 99: 467-472.
  22. von Manteuffel, S.R., Gingras, A.C., Ming, X.F., Sonenberg, N., and Thomas, G. 1996. 4E-BP1 phosphorylation is medi- ated by the FRAP-p70s6k pathway and is independent of mitogen-activated protein kinase. Proc. Natl. Acad. Sci. 93: 4076-4080.

Cited by

Sorted by citations

Authors
Hay, N., & Sonenberg, N.
Affiliations
University of Illinois Chicago (US)
Venue
Genes & Development
Published
2004-08-15
Volume
18
Issue
16
Pages
1926-1945
ISSN
  • 0890-9369 (ISSN-L)
  • 1549-5477
OpenAlex
W2129585918
Cited by
4,181
References
9
Citations by year
2026: 40 · 2025: 75 · 2024: 94 · 2023: 144 · 2022: 145 · 2021: 188 · 2020: 208 · 2019: 184 · 2018: 216 · 2017: 219 · 2016: 249 · 2015: 265 · 2014: 280 · 2013: 274 · 2012: 284
Type
posted content
Language
en
Open access
Locations
  • Genes & Development (publishedVersion)
  • PubMed (publishedVersion)
  • eScholarship@McGill (McGill) (submittedVersion, cc-by-nc)
Funders
  • Howard Hughes Medical Institute
  • National Institutes of Health
  • Canadian Institutes of Health Research
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › PI3K/AKT/mTOR signaling in cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
Keywords
mTOR, TOR signaling, protein synthesis regulation, cell growth, cell proliferation, downstream targets, phosphorylation, cancer, synaptic plasticity
MeSH terms
Animals, Cell Division, Energy Metabolism, Growth Substances, Neoplasms, Peptide Initiation Factors, Phosphorylation, Protein Kinases, Transcription, Genetic, Protein Biosynthesis, Ribosomal Protein S6 Kinases, TOR Serine-Threonine Kinases

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review