1000-Cycling Regulatory T Cells Drive Immune Escape

Paper Talk · May 19, 2026 · 20m

This research identifies cycling regulatory T cells (cycTreg) as primary drivers of immunosuppression during the progression from preinvasive to invasive breast cancer. By analyzing large single-cell transcriptomic datasets from both humans and rats, the authors discovered that these specific cells expand significantly during the transition to invasive carcinoma, effectively blocking the body's natural immune response. The study demonstrates that type 2 dendritic cells (cDC2) and IL-33 signaling from fibroblasts are responsible for promoting the growth of these suppressive cells. Clinically…