Clearance of dead cells by efferocytosis promotes liver metastasis in pancreatic cancer

Pancreatic cancer liver metastases show high levels of immunosuppressive macrophages, which promote tumor growth. We found that blocking the efferocytosis pathway during early-stage metastasis in a mouse model inhibited the development of immunosuppressive activity in monocyte-derived macrophages, which restored T cell activation and reduced the metastatic tumor burden.