Cited by 119PI3K/AKT/mTOR signaling in cancerLymphoma Diagnosis and TreatmentRNA and protein synthesis mechanisms

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Targeting cap-dependent translation blocks converging survival signals by AKT and PIM kinases in lymphoma

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Abstract

New anticancer drugs that target oncogenic signaling molecules have greatly improved the treatment of certain cancers. However, resistance to targeted therapeutics is a major clinical problem and the redundancy of oncogenic signaling pathways provides back-up mechanisms that allow cancer cells to escape. For example, the AKT and PIM kinases produce parallel oncogenic signals and share many molecular targets, including activators of cap-dependent translation. Here, we show that PIM kinase expression can affect the clinical outcome of lymphoma chemotherapy. We observe the same in animal lymphoma models. Whereas chemoresistance caused by AKT is readily reversed with rapamycin, PIM-mediated resistance is refractory to mTORC1 inhibition. However, both PIM- and AKT-expressing lymphomas depend on cap-dependent translation, and genetic or pharmacological blockade of the translation initiation complex is highly effective against these tumors. The therapeutic effect of blocking cap-dependent translation is mediated, at least in part, by decreased production of short-lived oncoproteins including c-MYC, Cyclin D1, MCL1, and the PIM1/2 kinases themselves. Hence, targeting the convergence of oncogenic survival signals on translation initiation is an effective alternative to combinations of kinase inhibitors.

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Crossref · 10.1084/jem.20110846

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  • TORC1 inhibition, via loss of 4EBP1 phosphorylation, results in a decrease of MCL-1 protein expression in some cancers.

    “TORC1 inhibition, via loss of 4EBP1 (also referred to as EIF4EBP1) phosphorylation, results in a decrease of MCL-1 protein expression in these cancers (37–40).”

    From mTOR Inhibition Specifically Sensitizes Colorectal Cancers with KRAS or BRAF Mutations to BCL-2/BCL-XL Inhibition by Suppressing MCL-1 (2014) · cites this paper as [40]

    In Results and Discussion (page unavailable), the paper reports that rapamycin-sensitive lymphoma cells show changes in 4E-BP1 phosphorylation and cap-dependent translation under mTORC1 inhibition. The same section reports a loss of MCL1 protein after treatment with silvestrol, a direct translation inhibitor, but does not show that mTORC1 inhibition causes MCL1 loss through reduced 4E-BP1 phosphorylation. (LLM, conf=0.87)

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Metadata

Authors
Schatz, J. H., Oricchio, E., Wolfe, A. L., Jiang, M., Linkov, I., Maragulia, J., Shi, W., Zhang, Z., Rajasekhar, V. K., Pagano, N. C., Porco, J. A., Teruya-Feldstein, J., Rosen, N., Zelenetz, A. D., Pelletier, J., & Wendel, H.-G.
Affiliations
  • Memorial Sloan Kettering Cancer Center (US)
  • Boston University (US)
  • Department of Medicine 4 , 5 , and 6
  • Institut du cancer Rosalind & Morris Goodman (CA)
Corresponding author
Wendel, Hans-Guido
Venue
Journal of Experimental Medicine
Published
2011-08-22
Volume
208
Issue
9
Pages
1799-1807
ISSN
  • 0022-1007 (ISSN-L)
  • 1540-9538
OpenAlex
W2102954277
Cited by
119
References
3
Citations by year
2026: 2 · 2025: 4 · 2024: 4 · 2023: 4 · 2022: 1 · 2021: 7 · 2020: 4 · 2019: 6 · 2018: 9 · 2017: 7 · 2016: 15 · 2015: 8 · 2014: 17 · 2013: 17 · 2012: 9
FWCI
5.24
Type
journal article
Language
en
Open access
Locations
  • The Journal of Experimental Medicine (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion, cc-by-nc-nd)
  • OpenBU (Boston University) (submittedVersion, cc-by-nc-sa)
Funders
  • Dana Foundation
  • Lymphoma Research Foundation
  • Leukemia Research Foundation
  • American Society of Clinical Oncology
  • Memorial Sloan-Kettering Cancer Center
  • National Institutes of Health
  • Canadian Cancer Society Research Institute
  • National Cancer Institute (R01CA142798)
  • National Institute of General Medical Sciences (R01GM073855)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › PI3K/AKT/mTOR signaling in cancer
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Lymphoma Diagnosis and Treatment
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA and protein synthesis mechanisms
Keywords
cap-dependent translation, lymphoma, Akt kinase, PIM kinases, chemoresistance, rapamycin, mTORC1 inhibition, translation initiation, c-Myc, cyclin D1, Mcl-1, kinase inhibitor resistance, targeted therapy
MeSH terms
Mechanistic Target of Rapamycin Complex 1, Animals, Antibiotics, Antineoplastic, Humans, Lymphoma, Proteins, Proto-Oncogene Proteins, RNA Caps, Transcription Factors, Protein Biosynthesis, Tumor Cells, Cultured, Signal Transduction, Gene Expression Regulation, Enzymologic, Gene Expression Regulation, Neoplastic, Protein Serine-Threonine Kinases, Drug Resistance, Neoplasm, Sirolimus, Multiprotein Complexes, Protein Kinase Inhibitors, Proto-Oncogene Proteins c-akt, Mice, Proto-Oncogene Proteins c-pim-1, TOR Serine-Threonine Kinases

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