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That is relatively over-expressed at the tumor periphery. These graphical representations of gene expression data compare the relative expression of galectin-1 from the core and edge of tumors to pooled data from normal mouse brain samples. (Graphics from GeneSpringW).created. To ensure that galectin-1 over-expression would not enhance proliferation of the U87MG line (and hence alter the interpret
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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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Cal significance.Paraffin sections of our patient-derived glioblastoma xenografts (15 of 22 lines) were stained for galectin-1 expression. Around half of the xenografts tested showed preferential staining at the tumor-brain interface (Figure 3). A few tumors stained in their entirety, and another subset lacked significant staining. The 2 to 4 fold change in galectin-1 mRNA expression at the tumor
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Radial migration assay was performed as previously described [30,31]. In a blinded fashion, various U87Gal-1 clones were analyzed and compared to U87GFP controls and parental U87MG cells. Of each clone, 2500 cells were allowed to sediment through a cooled manifold onto laminin-coated cell culture wells (Creative Scientific Methods, Inc., Phoenix, AZ). The manifold and slide were incubated together
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Ental counterparts. We did not observe, however, distant invasion in U87MG tumors over-expressing galectin-1. The U87MG model is in fact weakly invasive in the brains of immunocompromized mice [33,34], while it is associated with pronounced neoangiogenesis processes [37]. Further work (e.g. viral transduction) with our patient-derivedToussaint et al. Molecular Cancer 2012, 11:32 http://www.molecul
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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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That is relatively over-expressed at the tumor periphery. These graphical representations of gene expression data compare the relative expression of galectin-1 from the core and edge of tumors to pooled data from normal mouse brain samples. (Graphics from GeneSpringW).created. To ensure that galectin-1 over-expression would not enhance proliferation of the U87MG line (and hence alter the interpret
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That is relatively over-expressed at the tumor periphery. These graphical representations of gene expression data compare the relative expression of galectin-1 from the core and edge of tumors to pooled data from normal mouse brain samples. (Graphics from GeneSpringW).created. To ensure that galectin-1 over-expression would not enhance proliferation of the U87MG line (and hence alter the interpret