Figure 5From: Mapping the cellular and molecular heterogeneity of normal and malignant breast tissues and cultured cell linesCell line marker profiles correlate with established biomarkers in tumor xenografts. (a) Tumor growth curves of cell line-derived xenografts over time. Tumorigenicity of breast cancer cell lines was not correlated with their individual cellular profiles when injected into mammary glands of NOD/SCID mice. (b) Cell line marker profile correlated with resulting tumor histology and expression of biomarkers. Representative H&E stained sections of tumor xenografts from Luminal 1 and 2 cell lines (MCF7, SUM225) showing intraductal and comedo-like DCIS patterns of growth respectively, as well as, Basal cell line (HCC1806) showing solid carcinoma growth with squamous differentiation, and Mesenchymal cell lines (SUM159) showing spindle-cell metaplastic-like growth. Original magnification: 100×. Immunohistochemistry was used to stain tumor xenografts for expression of ERα, Her2, p53, CK14, CK18 and vimentin. Representative images shown from tumors of Luminal 1 (MCF7), Luminal 2 (MDA.MB.361), Basal (SUM 149), and Mesenchymal (MDA.MB.231) cell lines. Bar = 100 μm.Back to article page