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Rbance values of the other wells. Average corrected absorbance was compared between transfectant and parental cells, using a t-test.ECM attachment assaysThe U87MG human glioma cell line was kept in tissue culture in DMEM (Cellgro Mediatech, Inc.), with 10 fetal bovine serum, and penicillin/streptomycin. For transfection, 2.5x106 cells were plated overnight on a 100 mm round dish. Cells were trans
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By the ample amount of normal mouse brain tissue available for dissection. In spite of species differences, cross-hybridization of mouse genetic material to human probes did prove to be a common occurrence. These data made it possible to control, rather stringently, for the potential contamination of tumor edge samples with mouse brain. Of course, there could still be possible contamination ?react
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Ed by the current ones, highlight a major role for galectin-1 in GBM invasiveness. The characteristic malignant phenotype of glioblastoma extends beyond aggressive invasion. This tumor develops resistance to chemo- and radio-therapy, it promotes neoangiogenesis, and it seems to benefit from immune privilege. Interestingly, galectin-1 may play a role in promoting each of these phenotypes. While gal
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Ss microarray chip platforms when hybridizing the same sample RNA [32]. Additionally,Toussaint et al. Molecular Cancer 2012, 11:32 http://www.molecular-cancer.com/content/11/1/Page 8 ofFigure 4 (A) Galectin-1 transfection does not alter U87MG attachment to fibronectin. Attachment to fibronectin-coated 96-well plates was quantitated with an MTT assay with and without a media change in the middle of
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Esthesia. At the onset of neurological symptoms, animals were sacrificed in accordance with the Mayo Clinic IACUC. Survival curves were generated from those animals (38 of 40) developing tumors (7 of 20 acGFP-only).xenograft lines is necessary to characterize completely the in vivo phenotypic alterations that accompany overexpression of galectin-1.Our model system has identified galectin-1 as a ma
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Ed by the current ones, highlight a major role for galectin-1 in GBM invasiveness. The characteristic malignant phenotype of glioblastoma extends beyond aggressive invasion. This tumor develops resistance to chemo- and radio-therapy, it promotes neoangiogenesis, and it seems to benefit from immune privilege. Interestingly, galectin-1 may play a role in promoting each of these phenotypes. While gal
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Assays of GBM cells stably transfected to over-express galectin-1, perfectly fit in with the previous studies mentioned above and highlight the importance of galectin-1 in the biologically aggressive behavior of experimental GBMs. While there was no enhancement of proliferation or change inattachment to fibronectin, galectin-1 upregulation induced more rapid two-dimensional migration and enhanced
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Filtering algorithm. This algorithm was designed to minimize the effect of potential contamination of the edge samples with normal mouse brain cells. Relative expression values for each gene from tumor core, tumor edge, and normal mouse brain samples were compared. Genes of interest were identified that met three criteria: a) low expression at tumor core; b) relatively increased expression at tumo