SLC16A1 and breast cancer: We found miR-124 expressions were significantly downregulated by treating with low concentration-Taxol in three breast cancer cells, BT474, SKBR3 and MCF7 (Fig. 3a–c), suggesting miR-124 might involve in the negative feedback of Taxol-MCT1 pathway since miRNAs negatively regulate the expression of their target genes through direct binding to 3′UTR region.