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Chryplewicz A, Scotton J, Tichet M, Zomer A, Shchors K, Joyce JA, Homicsko K, Hanahan D. Cancer cell autophagy, reprogrammed macrophages, and remodeled vasculature in glioblastoma triggers tumor immunity. Cancer Cell 2022; 40:1111-1127.e9. [PMID: 36113478 PMCID: PMC9580613 DOI: 10.1016/j.ccell.2022.08.014] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 06/29/2022] [Accepted: 08/15/2022] [Indexed: 01/10/2023]
Abstract
Glioblastoma (GBM) is poorly responsive to therapy and invariably lethal. One conceivable strategy to circumvent this intractability is to co-target distinctive mechanistic components of the disease, aiming to concomitantly disrupt multiple capabilities required for tumor progression and therapeutic resistance. We assessed this concept by combining vascular endothelial growth factor (VEGF) pathway inhibitors that remodel the tumor vasculature with the tricyclic antidepressant imipramine, which enhances autophagy in GBM cancer cells and unexpectedly reprograms immunosuppressive tumor-associated macrophages via inhibition of histamine receptor signaling to become immunostimulatory. While neither drug is efficacious as monotherapy, the combination of imipramine with VEGF pathway inhibitors orchestrates the infiltration and activation of CD8 and CD4 T cells, producing significant therapeutic benefit in several GBM mouse models. Inclusion up front of immune-checkpoint blockade with anti-programmed death-ligand 1 (PD-L1) in eventually relapsing tumors markedly extends survival benefit. The results illustrate the potential of mechanism-guided therapeutic co-targeting of disparate biological vulnerabilities in the tumor microenvironment.
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Affiliation(s)
- Agnieszka Chryplewicz
- Swiss Institute for Experimental Cancer Research (ISREC), School of Life Sciences, Swiss Federal Institute of Technology Lausanne (EPFL), Lausanne, Switzerland; Agora Translational Cancer Research Center, Lausanne, Switzerland
| | - Julie Scotton
- Swiss Institute for Experimental Cancer Research (ISREC), School of Life Sciences, Swiss Federal Institute of Technology Lausanne (EPFL), Lausanne, Switzerland
| | - Mélanie Tichet
- Swiss Institute for Experimental Cancer Research (ISREC), School of Life Sciences, Swiss Federal Institute of Technology Lausanne (EPFL), Lausanne, Switzerland; Agora Translational Cancer Research Center, Lausanne, Switzerland; Lausanne Branch, Ludwig Institute for Cancer Research, Lausanne, Switzerland
| | - Anoek Zomer
- Agora Translational Cancer Research Center, Lausanne, Switzerland; Lausanne Branch, Ludwig Institute for Cancer Research, Lausanne, Switzerland
| | - Ksenya Shchors
- Swiss Institute for Experimental Cancer Research (ISREC), School of Life Sciences, Swiss Federal Institute of Technology Lausanne (EPFL), Lausanne, Switzerland
| | - Johanna A Joyce
- Agora Translational Cancer Research Center, Lausanne, Switzerland; Lausanne Branch, Ludwig Institute for Cancer Research, Lausanne, Switzerland; Department of Oncology, University of Lausanne, Lausanne, Switzerland; Swiss Cancer Center Leman (SCCL), Lausanne/Geneva, Switzerland
| | - Krisztian Homicsko
- Agora Translational Cancer Research Center, Lausanne, Switzerland; Lausanne Branch, Ludwig Institute for Cancer Research, Lausanne, Switzerland; Department of Oncology, University of Lausanne, Lausanne, Switzerland; Swiss Cancer Center Leman (SCCL), Lausanne/Geneva, Switzerland
| | - Douglas Hanahan
- Swiss Institute for Experimental Cancer Research (ISREC), School of Life Sciences, Swiss Federal Institute of Technology Lausanne (EPFL), Lausanne, Switzerland; Agora Translational Cancer Research Center, Lausanne, Switzerland; Lausanne Branch, Ludwig Institute for Cancer Research, Lausanne, Switzerland; Swiss Cancer Center Leman (SCCL), Lausanne/Geneva, Switzerland.
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