Neutrophil-Driven Trogocytosis in Pancreatic Ductal Adenocarcinoma Liver Metastases Restrains Immunosuppressive Macrophage Polarization and Limits Metastatic Progression.
- Open access
Neutrophils limit immunosuppressive macrophage polarization in PDAC liver metastases through trogocytosis, reducing metastatic progression by 50%.
- Why it matters: Understanding immune interactions in PDAC metastasis is crucial because early liver spread leads to limited treatment options and poor survival, yet neutrophil roles remain unclear.
- What they did: The study used intravital calcium imaging and single-cell RNA sequencing to observe neutrophil behavior and their influence on macrophage subpopulations in a PDAC metastasis mouse model, focusing on their interactions and signaling pathways.
- The result: Findings show neutrophils uptake tumor fragments and prevent immunosuppressive macrophage development via C3-dependent signaling, suggesting that targeting neutrophil-macrophage crosstalk could improve therapeutic strategies.