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. 2021 Mar 4;40(13):2407–2421. doi: 10.1038/s41388-021-01718-4

Fig. 1. Overexpression of YAP1 was critical for growth and invasion of enzalutamide-resistant cells.

Fig. 1

A YAP1 signature was obtained from molecular signatures database of GSEA web site (http://software.broadinstitute.org/gsea/msigdb/index.jsp) and cross-referenced with the enzalutamide-resistant dataset (GSE52169). B, C YAP1 mRNA and protein were measured in parental LNCaP cells (WT) and enzalutamide-resistant cells (EnzaR) by RT-qPCR (n = 3) and western blot, respectively. Glucocorticoid receptor (GR) was used as positive marker for EnzaR cells. Asterisk indicates p < 0.05 using one-way ANOVA test. D YAP1 transcriptional activity was measured by transient transfection of 8xGIIC luciferase reporter into parental LNCaP cells (WT) and enzalutamide-resistant cells (EnzaR) (n = 3). Asterisk indicates p < 0.05 using one-way ANOVA test. E Several well-known YAP1 targets were assayed by RT-qPCR in parental LNCaP cells (WT) and enzalutamide-resistant cells (EnzaR) (n = 3). Asterisk indicates p < 0.05 using one-way ANOVA test. F YAP1 was knocked down in EnzaR cells by siRNA against YAP1 (40 nM). Results of western blot (upper panel) showed the knockdown efficiency of siYAP1 and cell proliferation (lower panel) was measured by MTS assay for indicated time point (n = 3). Asterisk indicates p < 0.05 using two-way ANOVA test. G Enzalutamide-resistant cells knocked down YAP1 expression by siRNA for 48 h were trypsinized and performed cell invasion assay for additional 16 h. Average of invaded cell numbers were counted from six different areas. Asterisk indicates p < 0.05 using two-tailed Student’s t-test.