Cited by 201Telomeres, Telomerase, and SenescenceOccupational and environmental lung diseasesCancer Cells and Metastasis

SASP mediates chemoresistance and tumor-initiating-activity of mesothelioma cells

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Canino, C, Mori, F, Cambria, A, Diamantini, A, Germoni, S, Alessandrini, G, Borsellino, G, Galati, R +8 more·2012·Oncogene

Abstract

Here we show that pemetrexed-treated mesothelioma cells undergo accelerated senescence. This is characterized by the secretion of proinflammatory and mitogenic cytokines, reminiscent of an SASP (senescence-associated secretory phenotype). Conditioned media from senescent MPM (malignant pleural mesothelioma) cells trigger the emergence of EMT (epithelial-to-mesenchymal)-like, clonogenic and chemoresistant cell subpopulations, expressing high levels of ALDH (aldehyde dehydrogenase) activity (ALDH(bright) cells). We show by fluorescence-activated cell sorting of purified ALDH(bright) and ALDH(low) cells, that both cell-autonomous and cell-non-autonomous mechanisms converge to maintain the SASP-induced, EMT-like cell subpopulations. Chemoresistant ALDH(bright) cells exist within primary MPM specimens and enrichment for ALDH(bright) cells correlates with an earlier tumor onset into NOD/SCID mice. We show that RAS(v12) expression induces SASP-like changes in untransformed human mesothelial cells, and that p53 ablation increases the effect of RAS(v12) expression. We identify STAT3 activation as a crucial event downstream to SASP signaling. In fact, small hairpin RNA-mediated ablation of STAT3 deeply attenuates the induction of EMT genes and the increase of ALDH(bright) cells induced by SASP-cytokines. This strongly affects the chemoresistance of MPM cells in vitro and leads to anticancer effects in vivo.

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Crossref · 10.1038/onc.2011.485

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  • The SASP is able to inhibit differentiation both in vitro and in vivo, while in some cases leads to acquisition of stem cell characteristics.

    “Interestingly, the SASP is able to inhibit differentiation both in vitro and in vivo, while in some cases leads to acquisition of stem cell characteristics.41,44,54,55,64–66”
  • Conditioned media from senescent cells can induce EMT in cell lines derived from many tumour types, including non-aggressive breast cancer, mesothelioma, and melanoma, as evidenced by decreased expression of epithelial markers and increased expression of mesenchymal markers.

    “Importantly, it is known that conditioned media from senescent cells can induce EMT in cell lines derived from many tumour types, including non-aggressive breast cancer, mesothelioma, and melanoma, as evidenced by decreased expression of epithelial markers (e.g. E-cadherin, cytokeratins) and increased expression of mesenchymal markers (e.g. vimentin).12,54,55”
  • Induction of senescence and SASP in mesothelioma cells led to the emergence of a subpopulation of highly clonogenic cells with enhanced ability to form tumours when xenografted in mice.

    “In addition, induction of senescence and SASP in mesothelioma cells led to the emergence of a subpopulation of highly clonogenic cells with enhanced ability to form tumours when xenografted in mice.55”

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Authors
Canino, C., Mori, F., Cambria, A., Diamantini, A., Germoni, S., Alessandrini, G., Borsellino, G., Galati, R., Battistini, L., Blandino, R., Facciolo, F., Citro, G., Strano, S., Muti, P., Blandino, G., & Cioce, M.
Affiliations
  • Instituto Nazionale Tumori Regina Elena (IT)
  • Fondazione Santa Lucia (IT)
Corresponding author
  • Blandino, G
  • Cioce, M
Venue
Oncogene
Published
2011-10-24
Volume
31
Issue
26
Pages
3148-3163
ISSN
  • 0950-9232 (ISSN-L)
  • 1476-5594
OpenAlex
W2004196283
Cited by
200
References
50
Citations by year
2026: 8 · 2025: 12 · 2024: 18 · 2023: 15 · 2022: 18 · 2021: 25 · 2020: 17 · 2019: 16 · 2018: 14 · 2017: 4 · 2016: 18 · 2015: 15 · 2014: 8 · 2013: 7 · 2012: 4
FWCI
4.36
Type
journal article
Language
en
Open access
Locations
  • Oncogene (publishedVersion)
  • PubMed (publishedVersion)
  • Archivio Istituzionale della Ricerca (Universita Degli Studi Di Milano) (submittedVersion, other-oa)
Funders
Istituto Nazionale per l'Assicurazione Contro Gli Infortuni sul Lavoro
Topics
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Occupational and environmental lung diseases
  • Health Sciences › Medicine › Oncology › Cancer Cells and Metastasis
Keywords
senescence-associated secretory phenotype, malignant pleural mesothelioma, chemoresistance, epithelial-mesenchymal transition, aldehyde dehydrogenase, cancer stem cells, pemetrexed, STAT3, RasV12, p53, cellular senescence, tumor microenvironment, cytokines, NOD/SCID xenograft
MeSH terms
Pemetrexed, Aldehyde Dehydrogenase, Animals, Cell Count, Cell Survival, Cell Transformation, Neoplastic, Glutamates, Guanine, Humans, Male, Mesoderm, Mesothelioma, Mitogens, Phenotype, Genes, ras, Signal Transduction, Gene Expression Regulation, Neoplastic, Cytokines, Cellular Senescence, Culture Media, Conditioned, Drug Resistance, Neoplasm, RNA, Small Interfering, Cell Line, Tumor, STAT3 Transcription Factor, Mice, Gene Knockdown Techniques, Epithelial-Mesenchymal Transition

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