NANOG and posterior cortical atrophy: To investigate the relationship between NANOG expression and NK cell resistance in PCa, GFP-NANOG-overexpressing DU145 (GN-DU145) and PC3 (GN-PC3) cells were generated (Fig. 2 A and Additional file 1: Figure S3A); GFP-overexpressing DU145 (GFP-DU145) and PC3 (GFP-PC3) cells were generated as controls.