Ovarian cancer-derived IL-4 promotes immunotherapy resistance
- PMID: 39481380
- PMCID: PMC11682930
- DOI: 10.1016/j.cell.2024.10.006
Ovarian cancer-derived IL-4 promotes immunotherapy resistance
Abstract
Ovarian cancer is resistant to immunotherapy, and this is influenced by the immunosuppressed tumor microenvironment (TME) dominated by macrophages. Resistance is also affected by intratumoral heterogeneity, whose development is poorly understood. To identify regulators of ovarian cancer immunity, we employed a spatial functional genomics screen (Perturb-map), focused on receptor/ligands hypothesized to be involved in tumor-macrophage communication. Perturb-map recapitulated tumor heterogeneity and revealed that interleukin-4 (IL-4) promotes resistance to anti-PD-1. We find ovarian cancer cells are the key source of IL-4, which directs the formation of an immunosuppressive TME via macrophage control. IL-4 loss was not compensated by nearby IL-4-expressing clones, revealing short-range regulation of TME composition dictating tumor evolution. Our studies show heterogeneous TMEs can emerge from localized altered expression of cancer-derived cytokines/chemokines that establish immune-rich and immune-excluded neighborhoods, which drive clone selection and immunotherapy resistance. They also demonstrate the potential of targeting IL-4 signaling to enhance ovarian cancer response to immunotherapy.
Keywords: CCL7; IL-4; Perturb-map; immunotherapy; intratumoral heterogeneity; macrophages; multiplex imaging; ovarian cancer; spatial CRISPR screens; spatial genomics; tumor immunology; tumor microenvironment; tumor neighborhood; type 2 immunity.
Copyright © 2024 Elsevier Inc. All rights reserved.
Conflict of interest statement
Declaration of interests B.D.B. has a patent application on the Pro-Codes, which have been licensed to Immunai and Noetik. P.K.S. is co-founder of Glencoe Software and member of the SAB for RareCyte, NanoString, and Montai Health; he holds equity in Glencoe and RareCyte. N.R. is the founder of R&A Data.
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