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Ble cross-hybridizing host genes. The use of our animal model to identify mediators of glioma invasion has the potential pitfall of identifying artifacts of xenografting. That is, human glioma cells confronted with nude mouse brain rather than human brain may express genes specific to this setting. Two arguments can be made against this theory. First, there is no teleological reason for human cell
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Expression profile of glioblastoma multiforme invasive phenotype points to new therapeutic targets. Neoplasia 2005, 7:7?6. Zagzag D, Salnikow K, Chiriboga L, Yee H, Lan L, Ali MA, Garcia R, Demaria S, Newcomb EW: Downregulation of major histocompatibility complex antigens in invading glioma cells: stealth invasion of the brain. Lab Invest 2005, 85:328?41. Camby I, Belot N, Rorive S, Lefranc F, Mau
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Or his help with radial migration assays. Reagents used in preliminary pilot assays were kindly provided by Yoel Kloog Authors' contributions LGT and JHU conceived of the study and designed the assays. LGT performed tumor xenografting, cell culture, and laser capture microdissection. LGT, FL, and RK wrote and edited the manuscript. AN designed and performed all DNA vector construction and sequenci
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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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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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Galectin-1 transfectants. A population of GFP-sorted cells (the "Gal-1" bars in Figure 4A) was compared to its parental counterpart. The number of metabolically-active cells attached to fibronectin was no different between the two lines at eight hours. Changing the media at four hours reduced the number of cells left for labeling, but the effect was equal in both groups, suggesting a similar rate
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Or his help with radial migration assays. Reagents used in preliminary pilot assays were kindly provided by Yoel Kloog Authors' contributions LGT and JHU conceived of the study and designed the assays. LGT performed tumor xenografting, cell culture, and laser capture microdissection. LGT, FL, and RK wrote and edited the manuscript. AN designed and performed all DNA vector construction and sequenci
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File1: Figure S1. Galectin-1 staining correlates with patient survival. Using a tissue microarray created at Mayo Clinic, we stained glioblastoma samples from 34 separate patients using immunohistochemistry for galectin-1. A survival analysis revealed a trend towards shorter survival in those patients harboring galectin-1 positive tumors. Abbreviations ATCC: American type culture collection; ECM: