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Updated: Dec 22, 2025

Studying the Effects of Tumor-Secreted Paracrine Ligands on Macrophage Activation using Co-Culture with Permeable Membrane Supports
Published on: November 28, 2019
Immunotherapeutic Response in Tumors Is Affected by Microenvironmental ROS
1NorthShore University HealthSystem, Evanston, Illinois. shayward@northshore.org.
Abstract:
Carcinoma-associated fibroblasts (CAF) are a potential therapeutic target for both direct and indirect regulation of cancer progression and therapy response. In this issue of Cancer Research, Ford and colleagues investigate the influence of CAF on the immune environment of tumors, specifically focusing on the regulation of CD8+ T cells, required for immune therapy response. Their work suggests a role for stromally expressed NADPH oxidase 4 (NOX4) as a modulator of reactive oxygen species that in turn can reduce the number of CD8+ T cells locally. Inhibition of NOX4 increased CD8+ T cells and restored responsiveness to immune therapy, suggesting an indirect stromally targeted avenue for therapy resensitization.See related article by Ford et al., p. 1846.
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