Figure 4From: Functional Heterogeneity within the CD44 High Human Breast Cancer Stem Cell-Like Compartment Reveals a Gene Signature Predictive of Distant MetastasisIdentification of proteins exhibiting altered expression levels between CD44hi/CD24lo and CD44hi/CD24− cells using comparative quantitative mass spectrometry-based proteomics of SILAC cells and validation of selected proteins. (A) A list of proteins exhibiting altered expression between CD44hi/CD24lo and CD44hi/CD24− cells. (B) ICC with estimated staining intensity and number of cells expressing CK6A, MUC1 and S100A14 in G4, A4 and the parental cell line compared with IHC of primary tumors established with A4 and HMT3909S13 inoculated into NOG mice. Scale bar: 20 µm. (C) Fold-change expression levels of mRNA of selected candidates in A4 and G4 measured by quantitative realtime PCR identifying CD24, MUC1, KRT6A (CK6A), KRT19 (CK19) and S100A14 upregulation in A4 at the mRNA level, whereas VIM is downregulated compared with G4. The number 1 (y axis) corresponds to equal mRNA expression in the two cell lines.Back to article page