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Figure 3 | Molecular Cancer

Figure 3

From: Cigarette smoke induces epithelial to mesenchymal transition and increases the metastatic ability of breast cancer cells

Figure 3

Cigarette smoke facilitates intraductal colonization of MCF 10A cells and distant metastasis of MCF7 cells. (A-B) H&E and FITC/DAPI staining of mammary gland sections from NSG immunodeficient mice injected intraductally with 100,000 control or 0.5% CSE-treated MCF 10A or MCF7 cells. Each mouse was injected at two sites. MCF10 A cells were injected into 3 mice and MCF7 cells into 2 mice for a total of 6 and 4 sites respectively. Two magnifications are shown. The xenografts were analyzed via immunoflourescence using a FITC antibody specific for human cytokeratin-18. (C) Growth of subcutaneous xenograft tumors from control and CSE-treated (0.5%) MCF7 cells. Each mouse (n=5) was injected at one site. Mean ± SD of five replicates are shown. (D) H&E staining of sections of lung and liver containing metastatic colonies from three representative NSG immunodeficient mice subcutaneously injected with 750,000 MCF7 cells treated with 0.5% CSE. Two additional mice were analyzed by gross pathology for a total n=5.

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Molecular Cancer

ISSN: 1476-4598