Cited by 1,160Telomeres, Telomerase, and SenescenceGenetics, Aging, and Longevity in Model OrganismsPI3K/AKT/mTOR signaling in cancer

MTOR regulates the pro-tumorigenic senescence-associated secretory phenotype by promoting IL1A translation

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Laberge, Remi-Martin, Sun, Yu, Orjalo, Arturo V., Patil, Christopher K., Freund, Adam, Zhou, Lili, Curran, Samuel C., Davalos, Albert R. +13 more·2015·Nature Cell Biology

Abstract

The TOR (target of rapamycin) kinase limits longevity by poorly understood mechanisms. Rapamycin suppresses the mammalian TORC1 complex, which regulates translation, and extends lifespan in diverse species, including mice. We show that rapamycin selectively blunts the pro-inflammatory phenotype of senescent cells. Cellular senescence suppresses cancer by preventing cell proliferation. However, as senescent cells accumulate with age, the senescence-associated secretory phenotype (SASP) can disrupt tissues and contribute to age-related pathologies, including cancer. MTOR inhibition suppressed the secretion of inflammatory cytokines by senescent cells. Rapamycin reduced IL6 and other cytokine mRNA levels, but selectively suppressed translation of the membrane-bound cytokine IL1A. Reduced IL1A diminished NF-κB transcriptional activity, which controls much of the SASP; exogenous IL1A restored IL6 secretion to rapamycin-treated cells. Importantly, rapamycin suppressed the ability of senescent fibroblasts to stimulate prostate tumour growth in mice. Thus, rapamycin might ameliorate age-related pathologies, including late-life cancer, by suppressing senescence-associated inflammation.

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  • NF-κB, p38, mTOR and C/EBPβ signalling pathways are major components of the SASP.

    “The NF- κB, p38, mTOR and C/EBPβ signalling pathways are major components of the SASP 63-67 .”

    From Senescence and cancer — role and therapeutic opportunities (2022) · cites this paper as [66]

    The Results sections on rapamycin and NF-κB activity support roles for mTOR and NF-κB in regulating the SASP. The cited passages do not establish p38 or C/EBPβ as major SASP pathways, so this paper supports only part of the four-pathway statement. No page numbers are available in our copy. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • Rapamycin lowers the senescence-associated secretory phenotype and preserves cell-cycle arrest but does not kill senescent cells.

    “Rapamycin, an immunosuppressant, decreases the SASP and maintains cell cycle arrest but does not kill Sncs (24).”
  • 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.”
  • 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”
  • 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 [66]

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Authors
Laberge, R.-M., Sun, Y., Orjalo, A. V., Patil, C. K., Freund, A., Zhou, L., Curran, S. C., Davalos, A. R., Wilson-Edell, K. A., Liu, S., Limbad, C., Demaria, M., Li, P., Hubbard, G. B., Ikeno, Y., Javors, M., Desprez, P.-Y., Benz, C. C., Kapahi, P., Nelson, P. S., & Campisi, J.
Affiliations
  • Chinese Academy of Sciences (CN)
  • Buck Institute for Research on Aging (US)
  • The University of Texas at San Antonio Health Science Center (US)
  • Fred Hutch Cancer Center (US)
Corresponding author
Campisi, Judith
Venue
Nature Cell Biology
Published
2015-07-06
Volume
17
Issue
8
Pages
1049-1061
ISSN
  • 1465-7392 (ISSN-L)
  • 1476-4679
OpenAlex
W1033197108
Cited by
1,160
References
72
Citations by year
2026: 119 · 2025: 114 · 2024: 109 · 2023: 99 · 2022: 137 · 2021: 122 · 2020: 112 · 2019: 87 · 2018: 89 · 2017: 78 · 2016: 72 · 2015: 22
FWCI
64.11
Type
journal article
Language
en
Open access
Locations
  • Nature Cell Biology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institute on Aging (AG041122, R56AG009909, AG017242, AG-09909, RL1AG032113, AG045288, P01AG025901, R01AG045835, R37AG009909, P01AG041122, K99AG045288, AG032113, P01AG017242, AG000266-16, AG025901, P30AG013319, P30AG044271, T32AG000266)
  • National Cancer Institute (CA097186, CA155679, R21CA155679, U24CA143858, CA165573, R01CA165573, CA071468, CA164188, R01CA071468, CA143858, U01CA164188, P50CA097186)
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, TORC1, rapamycin, senescence-associated secretory phenotype, cellular senescence, interleukin-6, NF-κB, senescence-associated inflammation, age-related cancer, longevity, translational regulation
MeSH terms
Animals, Anti-Inflammatory Agents, Antineoplastic Agents, Dose-Response Relationship, Drug, Fibroblasts, Humans, Male, Mitoxantrone, Phenotype, Prostatic Neoplasms, RNA, Messenger, Time Factors, Transcription, Genetic, Transfection, Interleukin-6, Up-Regulation, Gene Expression Regulation, Neoplastic, NF-kappa B, Mice, SCID, Cellular Senescence, Inflammation Mediators, Sirolimus, Xenograft Model Antitumor Assays, RNA Interference, Cell Line, Tumor, Tumor Burden, Cell Proliferation, Interleukin-1alpha, TOR Serine-Threonine Kinases

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