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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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S 1. Lefranc F, Facchini V, Kiss R: Proautophagic drugs: a novel means to combat apoptosis-resistant cancers, with a special emphasis on glioblastomas. Oncologist 2007, 12:1395?403. 2. Stupp R, Hegi ME, Mason WP, van den Bent MJ, Taphoorn MJ, Janzer RC, Ludwin SK, Allgeier A, Fisher B, Belanger K, Hau P, Brandes AA, Gijtenbeek J, Marosi C, Vecht CJ, Mokhtari K, Wesseling P, Villa S, Eisenhauer E,
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Tion into the brain through modifications to the actin cytoskeleton and the levels of expression of small GTPases. J Neuropathol Exp Neurol 2002, 61:585?97. Camby I, Decaestecker C, Lefranc F, Kaltner H, Gabius HJ, Kiss R: Galectin-1 knocking down in human U87 glioblastoma cells alters their gene expression pattern. Biochem Biophys Res Commun 2005, 335:27?5. Jung TY, Jung S, Ryu HH, Jeong YI, Jin
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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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Ioblastoma in general. In conclusion, the orthotopic glioblastoma xenograft model recapitulates not only the invasive phenotype, but also the regional expression profile reported in human samples of glioblastoma multiforme. The value of the model (i.e., abundant tissue, high-quality RNA, andToussaint et al. Molecular Cancer 2012, 11:32 http://www.molecular-cancer.com/content/11/1/Page 10 ofFigure
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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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Man T lymphocytes. J Immunol 1998, 161:2114?119. 47. Rubinstein N, Alvarez M, Zwirner NW, Toscano MA, Ilarregui JM, Bravo A, Mordoh J, Fainboim L, Podhajcer OL, Rabinovich GA: Targeted inhibition of galectin-1 gene expression in tumor cells results in heightened T cellmediated rejection; A potential mechanism of tumor-immune privilege. Cancer Cell 2004, 5:241?51. 48. Kuppner MC, Hamou MF, Sawamura
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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