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

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

Schatz, Jonathan H
•
Oricchio, Elisa  
•
Wolfe, Andrew L
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2011
The Journal of experimental medicine

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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Type
research article
DOI
10.1084/jem.20110846
Author(s)
Schatz, Jonathan H
Oricchio, Elisa  
Wolfe, Andrew L
Jiang, Man
Linkov, Irina
Maragulia, Jocelyn
Shi, Weiji
Zhang, Zhigang
Rajasekhar, Vinagolu K
Pagano, Nen C
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Date Issued

2011

Published in
The Journal of experimental medicine
Volume

208

Issue

9

Start page

1799

End page

807

Subjects

Protein Biosynthesis

•

Signal Transduction

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
UPORICCHIO  
Available on Infoscience
July 3, 2017
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/138776
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