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Eration, Migration, Invasion, Galectin-Backgound In spite of recent advances in the treatment of patients with glioblastoma, the prognosis for those afflicted remains poor. Even when these tumors harbor a favorable gene methylation profile, the newest standard of care, including temozolomide as a chemotherapeutic [1],* Correspondence: Gtoussaint@medicine.tamhsc.edu 1 The Texas Brain and Spine Inst
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Thanized and their brains removed and either frozen using Optimal Cutting Temperature (OCT) compound (Electron Microscopy Sciences, Fort Washington, PA) in cryomolds placed atop dry ice, or fixed in 10 buffered formalin and paraffin embedded for histopathological analysis. The symptom-free survival of nude mice harboring U87MG parental versus transfected xenografts was compared. Kaplan-Meyer surv
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Ed to their corresponding extraction buffer reservoirs. The column-based PicoPure RNA isolation kit (Arcturus, Mountain View, CA) was used to extract RNA from collected cells per manufacturer instructions.Toussaint et al. Molecular Cancer 2012, 11:32 http://www.molecular-cancer.com/content/11/1/Page 3 ofFigure 1 Three geographic tumor regions targeted for RNA isolation. Using laser-capture microdi
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Thotopically xenografted into the brains of immunocompromized mice. Invasive cells at the tumor periphery were isolated using laser capture microdissection. The mRNA expression profile of these cells was compared to expression at the tumor core, using normal mouse brain to control for host contamination. Galectin-1, a target identified by screening the resulting data, was stably over-expressed in
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Id tumors. J Clin Oncol 2010, 28:611s. Hall-Jackson CA, Eyers PA, Cohen P, Goedert M, Boyle FT, Hewitt N, Plant H, Hedge P: Paradoxical activation of Raf by a novel Raf inhibitor. Chem Biol 1999, 6:559?68. Su F, Viros A, Milagre C, Trunzer K, Bollag G, Spleiss O, Reis-Filho JS, Kong X, Koya RC, Flaherty KT, et al: RAS mutations in cutaneous squamous-cell carcinomas in patients treated with BRAF in
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Orithm. Galectin-1 was ranked at the top of this list. We thus took advantage of our own patient-derived glioblastoma xenograft model [25] in order to further decipher the roles of galectin-1 on GBM cell migration features. The system we have developed mitigates the effect of three important confounders from human samples. First, tissue is frozen within one minute of removal, ensuring high quality
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Ns.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.Toussaint et al. Molecular Cancer 2012, 11:32 http://www.molecular-cancer.com/content/11/1/Page 2 ofgrowth factor receptors [11] to effector metallo- [12,13] and serine- [14] proteases. Galectin-1 has also been identified as a key player in GBM cell mi
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Thotopically xenografted into the brains of immunocompromized mice. Invasive cells at the tumor periphery were isolated using laser capture microdissection. The mRNA expression profile of these cells was compared to expression at the tumor core, using normal mouse brain to control for host contamination. Galectin-1, a target identified by screening the resulting data, was stably over-expressed in

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