| Autor: |
Estela González-Gualda, David Macias, Samir Morsli, José Ezequiel Martín, Hui-Ling Ou, Mary Denholm, Ioana Olan, Reuben Hoffmann, Mark Dane, Dimitris Veroutis, Guillermo Medrano, Francisca Mulero, Carla P. Martins, Mariano Barbacid, Vassilis Gorgoulis, James E. Korkola, Doris M. Rassl, Gary J. Doherty, Robert C. Rintoul, Masashi Narita, Daniel Muñoz-Espín |
| Rok vydání: |
2022 |
| DOI: |
10.1101/2022.08.01.502019 |
| Popis: |
Platinum-based chemotherapy is commonly used for non-small cell lung cancer (NSCLC) treatment, yet clinical outcomes remain poor. Cellular senescence and its associated secretory phenotype (SASP) can have multiple tumour-promoting activities, although these are largely unexplored in lung cancer. Here we show that cisplatin-derived SASP enhances the malignant phenotype of lung cancer cells. Using xenograft, orthotopic and KrasG12V-driven murine NSCLC models, we demonstrate that cisplatin-induced senescent cells strongly promote tumour progression. Mechanistically, we find that a TGF-β-enriched SASP drives pro-proliferative effects through TGFβR1 and Akt/mTOR pathway activation. We validate the translational relevance of chemotherapy-induced SASP using clinical NSCLC samples from patients who received neoadjuvant platinum-based chemotherapy. Importantly, TGFβR1 inhibition with galunisertib or senolytic treatment significantly reduces tumour promotion driven by cisplatin-induced senescence. Finally, we demonstrate, using distinct murine NSCLC models, that addition of TGFBR1 inhibitors to platinum-based chemotherapy reduces tumour burden and improves survival, providing pre-clinical proof-of-concept for future trial designs. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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