Fig. 6

YY1 activates LINC00673 expression in breast cancer cells. a YY1 binding motif and the prediction of YY1 binding sites within the promoter region of LINC00673 provided by the JASPAR database. b The knockdown efficiency of YY1 in MDA-MB-231 cells was determined by qRT-PCR and western blotting. c qRT-PCR analysis of LINC00673 expression in MDA-MB-231 cells after transfection with YY1 siRNA and the negative control. d The overexpression efficiency of YY1 in MDA-MB-231 cells was determined by qRT-PCR and western blot analysis. e qRT-PCR analysis of LINC00673 expression in MDA-MB-231 cells after transfection with Lv-YY1 and the negative control. f qRT-PCR of the ChIP products validating the binding capacity of YY1 to the LINC00673 promoter. g The mechanism of the regulatory network and function of LINC00673. LINC00673 promoted proliferation, reduced apoptosis in breast cancer cells which could be enhanced by YY1 and acted as a ceRNA for miR-515-5p to regulate MARK and inactivate the Hippo signaling pathway. The data are presented as the mean ± the SD of three independent experiments. ** P < 0.01 and *** P < 0.001