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Accession IconGSE56410

Expression profile of PC-3-derived cell lines from transendothelial migration or in vivo metastasis

Organism Icon Homo sapiens
Sample Icon 7 Downloadable Samples
Technology Badge Icon Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)

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Metastatic colonization involves cancer cell lodgment or adherence in the microvasculature and subsequent migration of those cells across the endothelium into a secondary organ site. To study this process further, we analyzed both in vitro and in vivo migration of human PC-3 prostate cancer cells . We isolated 6 subpopulation of cells: TEM4-18 were isolated from in vitro transendothelial migration of PC-3 cells; GS672.Ug, GS683.LALN and JD1203.Lu are single passaged in vivo cell lines from TEM4-18; GS689.Li and GS694.LAd are twice passaged in vivo cell lines from PC-3 cells. All the subpopulations crossed an endothelial barrier more efficiently and more aggressive in a murine metastatic colonization model than parental PC-3 cells. Microarray and FACS analysis of these cells showed that the expression of many genes previously associated with leukocyte trafficking and cancer cell extravasation were either unchanged or down-regulated. These cells exhibited characteristic molecular markers of an epithelial-to-mesenchymal transition, including frank loss of E-cadherin expression and upregulation of the E-cadherin repressor ZEB1.
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