Cited by 800Telomeres, Telomerase, and SenescenceGenetics, Aging, and Longevity in Model OrganismsPI3K/AKT/mTOR signaling in cancer

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

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Herranz, Nicolás, Gallage, Suchira, Mellone, Massimiliano, Wuestefeld, Torsten, Klotz, Sabrina, Hanley, Christopher J., Raguz, Selina, Acosta, Juan Carlos +17 more·2015·Nature Cell Biology

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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  • Rapamycin and its analogue RAD001 reduced the protumorigenic SASP, prevented senescence, impaired SASP-mediated immune recognition of oncogene-expressing cells, and improved liver dysfunction in naturally aged mice.

    “Treatment with rapamycin (and its analogue RAD001)232 attenuated the protumorigenic SASP230, prevented senescence233, impaired SASP-mediated immune recognition of oncogene-expressing cells and ameliorated liver dysfunction in naturally aged mice231.”

    From Cellular senescence in ageing: from mechanisms to therapeutic opportunities (2021) · cites this paper as [230]

    The Results section ('mTOR inhibition also blunts the tumour suppressive effects of the SASP'; page unavailable) reports that rapamycin impaired SASP induction and reduced immune-cell infiltration in mice with oncogene-expressing hepatocytes, supporting the immune-surveillance part of the claim. The Results section ('mTOR inhibition prevents the induction of the SASP'; page unavailable) reports lower liver SASP levels in aged rapamycin-treated mice, but does not report improved liver dysfunction. The RAD001, protumorigenic-SASP and senescence clauses have separate citations in the citing sentence and are not judged here. (LLM, conf=0.88)

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  • The mTOR pathway, which coordinates cell growth and metabolism according to nutrient availability, also drives SASP production by increasing translation of certain mRNAs, including the membrane-bound NF-κB regulator IL-1α.

    “These include, for example, the mammalian target of rapamycin (mTOR) pathway, which coordinates cell growth and metabolism in response to nutrients, and also promotes SASP production through increased translation of subsets of mRNAs, including the membrane-bound and upstream regulator of NF-κB, IL-1α230”

    From Cellular senescence in ageing: from mechanisms to therapeutic opportunities (2021) · cites this paper as [230]

    The Introduction (page not specified) says mTOR responds to nutrient signals, and the Results report that mTOR inhibition reduces SASP induction and IL-1α mRNA’s association with polysomes. However, the Discussion identifies increased MAPKAPK2 translation—not IL-1α translation—as the mechanism controlling the SASP. The passages do not describe IL-1α as membrane-bound or an upstream NF-κB regulator. (LLM, conf=0.86)

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  • The nutrient sensing pathways mTOR and NAD are involved in SASP regulation.

    “In addition, the nutrient sensing pathways, mTOR and NAD, are involved in SASP regulation.56, 57, 58”

    From Cellular senescence and senescence-associated secretory phenotype via the cGAS-STING signaling pathway in cancer (2020) · cites this paper as [57]

    The Results section (‘mTOR inhibition prevents the induction of the SASP’; page not provided) reports that mTOR depletion and inhibition reduced SASP factors, supporting the mTOR part of the sentence. The cited paper does not address NAD’s involvement in SASP regulation, so it does not support the full claim. (LLM, conf=0.86)

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  • Alkylating agents, topoisomerase inhibitors, γ-irradiation, microtubule inhibitors and, to a lesser extent, vinca alkaloids have all been identified as senescence inducers in preclinical models.

    “Alkylating agents 27,95,96 (for example, cisplatin, cyclophosphamide and temozolomide), topoisomerase inhibitors 27,65,91,95 (such as doxorubicin, etoposide and camptothecin) and γ- irradiation 78 , but also microtubule inhibitors 27,97,98 (for example, paclitaxel) and, to a lesser extent, vinca alkaloids 78 (for example, vincristine), have all been identified as senescence inducers in preclinical”

    From Senescence and cancer — role and therapeutic opportunities (2022) · cites this paper as [65]

    The Results section describes fibroblasts that underwent irradiation-induced senescence, supporting the γ-irradiation part of the citation. The paper does not identify vinca alkaloids or vincristine as senescence inducers; those are the other agents for which this citation is attached. Page numbers are unavailable in our copy. (LLM, conf=0.88)

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  • The mTOR inhibitor rapamycin has the context-dependent potential to induce senescence, diminish NF-κB activity, suppress the pro-inflammatory SASP at the translational level, and limit the growth-promoting effect of senescent bystander fibroblasts on prostate tumours.

    “In various preclinical studies, the mTOR inhibitor rapamycin might have the context-dependent potential to induce senescence 45 , diminish NF-κB activity 65,66 , suppress the pro-inflammatory SASP at the translational level, and limit the growth-promoting effect of senescent bystander fibroblasts on prostate tumours 66 .”

    From Senescence and cancer — role and therapeutic opportunities (2022) · cites this paper as [65]

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Authors
Herranz, N., Gallage, S., Mellone, M., Wuestefeld, T., Klotz, S., Hanley, C. J., Raguz, S., Acosta, J. C., Innes, A. J., Banito, A., Georgilis, A., Montoya, A., Wolter, K., Dharmalingam, G., Faull, P., Carroll, T., Martínez-Barbera, J. P., Cutillas, P., Reisinger, F., Heikenwalder, M., Miller, R. A., Withers, D., Zender, L., Thomas, G. J., & Gil, J.
Affiliations
  • Imperial College London (GB)
  • Cancer Research UK (GB)
  • University of Tübingen (DE)
  • Helmholtz Munich (DE)
  • University of Michigan (US)
Corresponding author
Gil, Jesús
Venue
Nature Cell Biology
Published
2015-08-17
Volume
17
Issue
9
Pages
1205-1217
ISSN
  • 1465-7392 (ISSN-L)
  • 1476-4679
OpenAlex
W1910950086
Cited by
788
References
61
Citations by year
2026: 88 · 2025: 68 · 2024: 81 · 2023: 86 · 2022: 97 · 2021: 81 · 2020: 76 · 2019: 64 · 2018: 54 · 2017: 48 · 2016: 39 · 2015: 6
FWCI
36.07
Type
journal article
Language
en
Open access
Locations
  • Nature Cell Biology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • ePrints Soton (University of Southampton) (acceptedVersion)
  • UCL Discovery (University College London) (submittedVersion)
  • mediaTUM – the media and publications repository of the Technical University Munich (Technical University Munich) (submittedVersion)
  • Site cant be reached (submittedVersion)
  • PuSH - Publication Server of Helmholtz Zentrum München (submittedVersion)
  • Spiral (Imperial College London) (submittedVersion)
Funders
  • Wellcome Trust (098565, 098565/Z/12/Z)
  • Cancer Research UK (16243, 13315)
  • National Institutes of Health
  • Medical Research Council (MR/M000125/1)
  • Biotechnology and Biological Sciences Research Council (BB/H020527/2)
  • National Institute on Aging (P01AG031736, P30AG024824, U01AG022303)
Topics
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › PI3K/AKT/mTOR signaling in cancer
Keywords
mTOR, senescence-associated secretory phenotype, MAPKAPK2, 4E-BP1, ZFP36L1, translational regulation, mRNA degradation, rapamycin, cellular senescence, tumor suppression, tumor promotion, age-related diseases, immune surveillance
MeSH terms
MAP-Kinase-Activated Kinase 2, Animals, Female, Humans, Mice, Nude, Neoplasm Transplantation, Phosphoproteins, Protein Biosynthesis, Cellular Senescence, Protein Serine-Threonine Kinases, Proteome, Cell Line, Tumor, Intracellular Signaling Peptides and Proteins, HEK293 Cells, TOR Serine-Threonine Kinases

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