SMARCA5 and breast carcinoma: Furthermore, we explored whether this regulation occurred for endogenous SMARCA5. In keeping with our luciferase data, qPCR results showed a negative correlation between miR-151-5p and SMARCA5 expression levels in MCF-7 breast cancer lines, while the use of miR-151-5p inhibitor had a slightly increased expression of SMARCA5 mRNA (Figure 4B).