SIX1 and breast cancer: In addition, Western blotting results revealed that transfected miR‐200 family mimics, respectively, or mixed in MCF‐7‐SIX‐1‐OE cells could reverse SIX‐1‐mediated EMT (Figure 5G), suggesting that miR‐200 family may be necessary for SIX‐1‐induced ZEB1 signalling in BC metastases.