Figure 1. Schematic depicting the contribution of bone marrow-derived cells to the formation of lung metastases from a primary breast tumor.
Bone marrow contributes F4/80+ macrophages that express EMT promoting factors in the primary tumor microenvironment, and Ly6C+ myeloid progenitor cells in the metastatic lungs that express versican to stimulate MET of disseminated tumor cells. EMT, epithelial to mesenchymal transition; MET, mesenchymal to epithelial transition.
