Monocytes Secrete CXCL7 to Promote Breast Cancer Progression

To identify key immune players in the tumor microenvironment, investigators applied highly invasive MDA-MB-231 breast cancer cell lines to co-culture with human monocyte THP-1 cells and identified CXCL7 by cytokine array as one of the increasingly secreted cytokines by THP-1 cells.