Evasive encounters: Immunomodulatory CAFs interact with Tregs in the lung cancer microenvironment.

CHL1 + CXCL9 + cancer-associated fibroblasts at lung tumor margins recruit CXCR3 + regulatory T cells, promoting immune evasion in lung cancer.

• Why it matters: Understanding how stromal cells influence immune suppression is crucial for developing effective immunotherapies for lung cancer, where immune evasion limits treatment success.
• What they did: Ringham et al. identified specific fibroblasts expressing CHL1 and CXCL9 that attract suppressive CXCR3 + Tregs, highlighting the role of stromal chemokine gradients in immune regulation.
• The result: These findings suggest that immune-interacting fibroblasts can modulate tumor immunity depending on their context, potentially informing strategies to counteract immune evasion.