A novel CAF population coordinates hyper-suppressive regulatory T cell recruitment and localization in lung cancer.

A novel immunomodulatory CAF population expressing CHL1 promotes Treg recruitment and tumor immune suppression in lung cancer.

• Why it matters: Understanding how specific CAF subpopulations influence immune cell behavior is crucial for developing targeted therapies to overcome tumor immune evasion and improve patient outcomes.
• What they did: Using single-cell and spatial transcriptomics, the study identified imCAFs enriched in immune regulation, which produce CXCL9 to recruit CXCR3 + T reg cells, with genetic experiments confirming their role in tumor suppression.
• The result: Disrupting the imCAF-CXCL9-CXCR3 + T reg axis enhances CD8 + T cell activity and reduces tumor growth, suggesting this pathway as a promising target for lung cancer immunotherapy.