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mTOR regulates MAPKAPK2 translation to control the senescence-associated secretory phenotype

mTOR regulates MAPKAPK2 translation to control the senescence-associated secretory phenotype
mTOR regulates MAPKAPK2 translation to control the senescence-associated secretory phenotype
Senescent cells secrete a combination of factors collectively known as the senescence-associated secretory phenotype (SASP). The SASP reinforces senescence and activates an immune surveillance response, but it can also show pro-tumorigenic properties and contribute to age-related pathologies. In a drug screen to find new SASP regulators, we uncovered the mTOR inhibitor rapamycin as a potent SASP suppressor. Here we report a mechanism by which mTOR controls the SASP by differentially regulating the translation of the MK2 (also known as MAPKAPK2) kinase through 4EBP1. In turn, MAPKAPK2 phosphorylates the RNA-binding protein ZFP36L1 during senescence, inhibiting its ability to degrade the transcripts of numerous SASP components. Consequently, mTOR inhibition or constitutive activation of ZFP36L1 impairs the non-cell-autonomous effects of senescent cells in both tumour-suppressive and tumour-promoting contexts. Altogether, our results place regulation of the SASP as a key mechanism by which mTOR could influence cancer, age-related diseases and immune responses.
1465-7392
1205-1217
Herranz, Nicolás
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Gallage, Suchira
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Mellone, Massimiliano
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Wuestefeld, Torsten
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Klotz, Sabrina
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Hanley, Christopher J.
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Raguz, Selina
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Acosta, Juan Carlos
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Innes, Andrew J.
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Banito, Ana
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Georgilis, Athena
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Montoya, Alex
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Wolter, Katharina
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Dharmalingam, Gopuraja
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Faull, Peter
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Carroll, Thomas
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Martínez-Barbera, Juan Pedro
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Cutillas, Pedro
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Reisinger, Florian
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Heikenwalder, Mathias
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Miller, Richard A.
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Withers, Dominic
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Zender, Lars
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Thomas, Gareth J.
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Gil, Jesús
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Herranz, Nicolás
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Gallage, Suchira
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Mellone, Massimiliano
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Wuestefeld, Torsten
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Klotz, Sabrina
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Hanley, Christopher J.
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Raguz, Selina
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Acosta, Juan Carlos
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Innes, Andrew J.
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Banito, Ana
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Georgilis, Athena
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Montoya, Alex
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Wolter, Katharina
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Dharmalingam, Gopuraja
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Faull, Peter
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Carroll, Thomas
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Martínez-Barbera, Juan Pedro
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Cutillas, Pedro
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Reisinger, Florian
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Heikenwalder, Mathias
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Miller, Richard A.
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Withers, Dominic
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Zender, Lars
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Thomas, Gareth J.
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Gil, Jesús
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Herranz, Nicolás, Gallage, Suchira, Mellone, Massimiliano, Wuestefeld, Torsten, Klotz, Sabrina, Hanley, Christopher J., Raguz, Selina, Acosta, Juan Carlos, Innes, Andrew J., Banito, Ana, Georgilis, Athena, Montoya, Alex, Wolter, Katharina, Dharmalingam, Gopuraja, Faull, Peter, Carroll, Thomas, Martínez-Barbera, Juan Pedro, Cutillas, Pedro, Reisinger, Florian, Heikenwalder, Mathias, Miller, Richard A., Withers, Dominic, Zender, Lars, Thomas, Gareth J. and Gil, Jesús (2015) mTOR regulates MAPKAPK2 translation to control the senescence-associated secretory phenotype. Nature Cell Biology, 17 (9), 1205-1217. (doi:10.1038/ncb3225). (PMID:26280535)

Record type: Article

Abstract

Senescent cells secrete a combination of factors collectively known as the senescence-associated secretory phenotype (SASP). The SASP reinforces senescence and activates an immune surveillance response, but it can also show pro-tumorigenic properties and contribute to age-related pathologies. In a drug screen to find new SASP regulators, we uncovered the mTOR inhibitor rapamycin as a potent SASP suppressor. Here we report a mechanism by which mTOR controls the SASP by differentially regulating the translation of the MK2 (also known as MAPKAPK2) kinase through 4EBP1. In turn, MAPKAPK2 phosphorylates the RNA-binding protein ZFP36L1 during senescence, inhibiting its ability to degrade the transcripts of numerous SASP components. Consequently, mTOR inhibition or constitutive activation of ZFP36L1 impairs the non-cell-autonomous effects of senescent cells in both tumour-suppressive and tumour-promoting contexts. Altogether, our results place regulation of the SASP as a key mechanism by which mTOR could influence cancer, age-related diseases and immune responses.

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Accepted/In Press date: 20 July 2015
e-pub ahead of print date: 17 August 2015
Published date: 30 September 2015
Additional Information: A correction has been attached to this output located at https://www.nature.com/articles/ncb3243 and https://doi.org/10.1038/ncb3243
Organisations: Cancer Sciences

Identifiers

Local EPrints ID: 393538
URI: http://eprints.soton.ac.uk/id/eprint/393538
ISSN: 1465-7392
PURE UUID: 04575e5b-7060-4c76-983e-49245449f1ae
ORCID for Massimiliano Mellone: ORCID iD orcid.org/0000-0002-4964-9340
ORCID for Christopher J. Hanley: ORCID iD orcid.org/0000-0003-3816-7220

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Date deposited: 28 Apr 2016 13:21
Last modified: 15 Mar 2024 03:51

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Contributors

Author: Nicolás Herranz
Author: Suchira Gallage
Author: Massimiliano Mellone ORCID iD
Author: Torsten Wuestefeld
Author: Sabrina Klotz
Author: Selina Raguz
Author: Juan Carlos Acosta
Author: Andrew J. Innes
Author: Ana Banito
Author: Athena Georgilis
Author: Alex Montoya
Author: Katharina Wolter
Author: Gopuraja Dharmalingam
Author: Peter Faull
Author: Thomas Carroll
Author: Juan Pedro Martínez-Barbera
Author: Pedro Cutillas
Author: Florian Reisinger
Author: Mathias Heikenwalder
Author: Richard A. Miller
Author: Dominic Withers
Author: Lars Zender
Author: Jesús Gil

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