Abstract
Myeloid-derived suppressor cells (MDSCs) promote tumor growth and metastasis. We have recently demonstrated that the pro-inflammatory cytokine macrophage migration inhibitory factor (MIF) enhances the immunosuppressive microenvironment by increasing the abundance of monocytic MDSCs within the tumor. Our results suggest that MIF is a potential therapeutic target for the prevention of metastasis as it regulates the tumor microenvironment.