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. 2013 May 1;2(5):e24010. doi: 10.4161/onci.24010

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Figure 1. Effects of matrix metalloprotease 11 (MMP-11) expression by mononuclear inflammatory cells on the cytokine profile and metastatic potential of breast cancer. Tumors infiltrated by mononuclear inflammatory cells (MICs) that do not express MMP-11 release less pro-inflammatory factors than tumors containing MMP-11+ MICs. These latter cells mainly express interleukin (IL)-1, IL-5, IL-6, IL-17, interferon β (IFNβ) and NFκB and are associated with poor prognosis. MMP-11 expression by MICs coupled to the upregulation of pro-inflammatory proteins appears indeed to promote the metastatic spread of breast carcinoma cells.