The fictional link of CD151 to the phenotype of the luminal epithelial cell-derived mammary tumors. A Expression and distribution of E-cadherin, α 3 integrin and ER proteins in mammary tumors. B Analysis of expression of CD151-related adhesion molecules by immunoblotting. C: Recapturing of CD151-mediated cell interaction in breast cancer by the impact of its knockdown on the morphology of cultured MCF-10A cells in 2D (B) or 3D (C). C (a). Immunoblotting of Snail, Slug, Twist1 and KLF4 in mammary tumors. (b) IHC staining. D Image of human TNBC cells (HCC1937) with or without stable CD151 knockdown. Top panel, The-EMT-like change; bottom panel, confocal images of β -catenin staining in tumor cells. The specificity of CD151 shRNA was validated in a prior study [43]. Scale bar: 50 μm.