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medulloblastoma/carbohydrate
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The micro-RNA 199b-5p regulatory circuit involves Hes1, CD15, and epigenetic modifications in medulloblastoma.
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Micro-RNA (miR) 199b-5p targets Hes1 in medulloblastoma, one of the downstream effectors of both the canonical Notch and noncanonical Sonic Hedgehog pathways. In medulloblastoma patients, expression of miR-199b-5p is significantly decreased in metastatic cases, thus suggesting a downregulation
Differential spectrum of expression of neural cell adhesion molecule isoforms and L1 adhesion molecules on human neuroectodermal tumors.
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A series of four medulloblastomas, seven neuroblastomas (Nb), two ependymomas, and three gliomas, human neuroectodermal tumors, were screened for their expression of adhesion molecules L1, carcinoembryonic antigen, neural cell adhesion molecule isoforms (N-CAM) and HNK1 epitope by Western blotting
Overexpression of murine Pax3 increases NCAM polysialylation in a human medulloblastoma cell line.
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Polysialic acid (PSA) is a developmentally regulated carbohydrate found primarily on neural cell adhesion molecules (NCAM) in embryonic tissues. The majority of NCAM in adult tissues lacks this unique carbohydrate, but polysialylated NCAM (PSA-NCAM) is present in adult brain regions where neural
Human medulloblastoma gangliosides.
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To establish a model system for the study of ganglioside metabolism of the human brain tumor, medulloblastoma, we have chemically characterized the gangliosides of the Daoy cell line. These cells contain a high concentration of gangliosides (143 +/- 13 nmol LBSA/10(8) cells). The major species have
Tumor-associated carbohydrate antigens defining tumor malignancy: basis for development of anti-cancer vaccines.
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Tumors expressing a high level of certain types of tumor-associated carbohydrate antigens (TACAs) exhibit greater metastasis and progression than those expressing low level of TACAs, as reflected in decreased patient survival rate. Well-documented examples of such TACAs are: (i) H/Le(y)/Le(a) in
Shedding of gangliosides by human medulloblastoma cells.
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Shedding of immunosuppressive gangliosides is an important characteristic of both experimental and human tumors. Using a medulloblastoma cell line, Daoy, with a very high ganglioside expression (141 +/- 13 nmol/10(8) cells) and a well-characterized ganglioside complement, we have now studied
Proteomic profiling of cerebrospinal fluid identifies prostaglandin D2 synthase as a putative biomarker for pediatric medulloblastoma: A pediatric brain tumor consortium study.
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The aims of this study were to demonstrate the feasibility of centrally collecting and processing high-quality cerebrospinal fluid (CSF) samples for proteomic studies within a multi-center consortium and to identify putative biomarkers for medulloblastoma in CSF. We used 2-DE to investigate the CSF
The Ketogenic Diet Does Not Affect Growth of Hedgehog Pathway Medulloblastoma in Mice.
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The altered metabolism of cancer cells has long been viewed as a potential target for therapeutic intervention. In particular, brain tumors often display heightened glycolysis, even in the presence of oxygen. A subset of medulloblastoma, the most prevalent malignant brain tumor in children, arises
Non-polarized expression of Basal-cell adhesion molecule B-cam in epithelial ovarian cancers.
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The basal cell adhesion molecule (B-CAM) is a M(r) 90,000 cell surface glycoprotein identified by two monoclonal antibodies (mAbs), F8 and G253, raised against human tumor cells. Cloning and sequence analysis of a B-CAM cDNA has revealed a characteristic immunoglobulin domain structure of the B-CAM
Detection of acid mucopolysaccharides in human brain tumors by histochemical methods.
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Acid mucopolysaccharides (glycosaminoglycans) are identified by histochemical methods in biopsies of 107 human brain tumors. Isomorphous oligodendrogliomas and astrocytomas stained with alcian blue show marked, weblike, or diffuse distribution and concentration of acid mucopolysaccharides.
Glycosphingolipid antigens in neural tumor cell lines and anti-glycosphingolipid antibodies in sera of patients with neural tumors.
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To characterize biomarkers in neural tumors, we analyzed the acidic lipid fractions of 13 neural tumor cell lines using enzyme-linked immunoabsorbent assay (ELISA) and high-performance thin-layer chromatography (HPTLC) immunostaining. Sulfated glucuronosyl glycosphingolipids (SGGLs) are cell surface
Expression pattern of galectin-3 in neural tumor cell lines.
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Galectin-3 is a member of the galectin family of beta-galactoside-specific animal lectins. Here we show that galectin-3 is constitutively expressed in 15 out of 16 glioma cell lines tested, but not by normal or reactive astrocytes, oligodendrocytes, glial O-2A progenitor cells and the
Fluctuations in the expression of a glycolipid antigen associated with differentiation of melanoma cells monitored by a monoclonal antibody, Leo Mel 3.
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A monoclonal antibody, Leo Mel 3, raised against a melanoma cell line (LiBr), binds to a carbohydrate determinant of cell surface gangliosides, the simplest of which is GD3. This monoclonal antibody was screened for by its capacity to block the recognition and lysis of the melanoma cells by
Total parenteral nutrition on energy metabolism in children undergoing autologous peripheral blood stem cell transplantation.
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The resting energy expenditure (REE) and the respiratory quotient (RQ) were measured longitudinally using indirect calorimetry to examine the effects of total parenteral nutrition (TPN) on energy metabolism in children undergoing autologous peripheral blood stem cell transplantation (PBSCT). There
Immunization with a mimotope of GD2 ganglioside induces CD8+ T cells that recognize cell adhesion molecules on tumor cells.
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The GD2 ganglioside expressed on neuroectodermal tumor cells has been used as a target for passive and active immunotherapy in patients with malignant melanoma and neuroblastoma. We have reported that immunization of mice with a 47-LDA mimotope of GD2, isolated from a phage display peptide library
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