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| Item Type: | Article |
|---|---|
| Title: | MAPK-pathway inhibition mediates inflammatory reprogramming and sensitizes tumors to targeted activation of innate immunity sensor RIG-I |
| Creators Name: | Brägelmann, J., Lorenz, C., Borchmann, S., Nishii, K., Wegner, J., Meder, L., Ostendorp, J., Ast, D.F., Heimsoeth, A., Nakasuka, T., Hirabae, A., Okawa, S., Dammert, M.A., Plenker, D., Klein, S., Lohneis, P., Gu, J., Godfrey, L.K., Forster, J., Trajkovic-Arsic, M., Zillinger, T., Haarmann, M., Quaas, A., Lennartz, S., Schmiel, M., D'Rozario, J., Thomas, E.S., Li, H., Schmitt, C.A., George, J., Thomas, R.K., von Karstedt, S., Hartmann, G., Büttner, R., Ullrich, R.T., Siveke, J.T., Ohashi, K., Schlee, M. and Sos, M.L. |
| Abstract: | Kinase inhibitors suppress the growth of oncogene driven cancer but also enforce the selection of treatment resistant cells that are thought to promote tumor relapse in patients. Here, we report transcriptomic and functional genomics analyses of cells and tumors within their microenvironment across different genotypes that persist during kinase inhibitor treatment. We uncover a conserved, MAPK/IRF1-mediated inflammatory response in tumors that undergo stemness- and senescence-associated reprogramming. In these tumor cells, activation of the innate immunity sensor RIG-I via its agonist IVT4, triggers an interferon and a pro-apoptotic response that synergize with concomitant kinase inhibition. In humanized lung cancer xenografts and a syngeneic Egfr-driven lung cancer model these effects translate into reduction of exhausted CD8(+) T cells and robust tumor shrinkage. Overall, the mechanistic understanding of MAPK/IRF1-mediated intratumoral reprogramming may ultimately prolong the efficacy of targeted drugs in genetically defined cancer patients. |
| Keywords: | Signal Transducing Adaptor Proteins, Cell Cycle Checkpoints, Cell Death, Tumor Cell Line, Cytokines, DEAD Box Protein 58, ErbB Receptors, Neoplastic Gene Expression Regulation, Immune Evasion, Innate Immunity, Inflammation, Interferon Regulatory Factor-1, MAP Kinase Signaling System, Neoplasms, Oncogenes, Protein Kinase Inhibitors, Immunologic Receptors, Signal Transduction, Animals, Mice, Inbred C57BL Mice |
| Source: | Nature Communications |
| ISSN: | 2041-1723 |
| Publisher: | Nature Publishing Group |
| Volume: | 12 |
| Number: | 1 |
| Page Range: | 5505 |
| Date: | 17 September 2021 |
| Official Publication: | https://doi.org/10.1038/s41467-021-25728-8 |
| PubMed: | View item in PubMed |
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