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Jagged2 targeting in lung cancer activates anti-tumor immunity via Notch-induced functional reprogramming of tumor-associated macrophages
Journal article   Peer reviewed

Jagged2 targeting in lung cancer activates anti-tumor immunity via Notch-induced functional reprogramming of tumor-associated macrophages

Jay K Mandula, Rosa A Sierra-Mondragon, Rachel V Jimenez, Darwin Chang, Eslam Mohamed, Shiun Chang, Julio A Vazquez-Martinez, Yu Cao, Carmen M Anadon, Sae Bom Lee, …
Immunity (Cambridge, Mass.), Vol.57(5), pp.1124-1140.e9
04/11/2024
DOI: 10.1016/j.immuni.2024.03.020
PMCID: PMC11096038
PMID: 38636522
url
https://pmc.ncbi.nlm.nih.gov/articles/PMC11096038/pdf/nihms-1984323.pdfView
Open Access

Abstract

Signaling through Notch receptors intrinsically regulates tumor cell development and growth. Here, we studied the role of the Notch ligand Jagged2 on immune evasion in non-small cell lung cancer (NSCLC). Higher expression of JAG2 in NSCLC negatively correlated with survival. In NSCLC pre-clinical models, deletion of Jag2, but not Jag1, in cancer cells attenuated tumor growth and activated protective anti-tumor T cell responses. Jag2 lung tumors exhibited higher frequencies of macrophages that expressed immunostimulatory mediators and triggered T cell-dependent anti-tumor immunity. Mechanistically, Jag2 ablation promoted Nr4a-mediated induction of Notch ligands DLL1/4 on cancer cells. DLL1/4-initiated Notch1/2 signaling in macrophages induced the expression of transcription factor IRF4 and macrophage immunostimulatory functionality. IRF4 expression was required for the anti-tumor effects of Jag2 deletion in lung tumors. Antibody targeting of Jagged2 inhibited tumor growth and activated IRF4-driven macrophage-mediated anti-tumor immunity. Thus, Jagged2 orchestrates immunosuppressive systems in NSCLC that can be overcome to incite macrophage-mediated anti-tumor immunity.
macrophage reprogramming immunosuppression in cancer Notch ligands Jagged immunosuppressive myelopoiesis tumor-associated macrophages

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