עמוד 1 מ 142 תוצאות
Conjugates of horseradish peroxidase with the lectins ricin (d-galactose), wheat germ agglutinin (N-acetylglucosamine), phytohemagglutinin (N-acetylgalactosamine), and with cholera toxin (GM1 ganglioside) were used for a cytochemical detection of corresponding termin al carbohydrates, or glycolipids
The carbohydrate determinants of the cell surface of neuroblastoma C 1300 clone N 18 have been investigated by light microscopy with a panel of 11 lectins as cytochemical reagents. The expression of N- and O-glycanes with a predominance of 3-4 antigenic N-glycosyl chains was revealed. The
BACKGROUND
CD44 represents a heterogeneous group of surface glycoproteins involved in cell-cell and cell-matrix interactions. CD44H is the major receptor for hyaluronate, and most if not all CD44H known functions are attributed to its ability to recognize hyaluronate. We have previously demonstrated
We report herein the case of a 56-year-old woman with a neuroblastoma associated with a high serum level of carbohydrate antigen, CA125. The patient presented with massive ascites and a firm mass in her upper abdomen for which a laparotomy was performed. However, a recurrent tumor was found 6 months
The cell density-dependent growth inhibition of human SK-N-MC neuroblastoma cells is initiated by increased ganglioside sialidase activity leading to elevated cell surface presentation of ganglioside GM1, a ligand of galectin-1. We herein show that the extent of the cell surface expression of the
A ganglioside-stimulated ecto-type protein phosphorylation system (ecto-Gg-kinase) was detected on the cell surface of a human neuroblastoma cell line (GOTO). When intact cells were incubated with [gamma-32P]ATP, at least 28 cell surface proteins were phosphorylated, as evident on SDS-PAGE (4-20%)
The T3 concentration in brain predominantly reflects local production from T4 rather than T3 uptake from the circulating pool. We recently demonstrated that rat brain T3 content is increased by glucose feeding compared to chow feeding. One possible mechanism for this effect is an increase in brain
Neuronal cells expressing neural cell adhesion molecule (N-CAM) accumulate the largest N-CAM component (N-CAM 180) at cell - cell contact sites. To test whether this accumulation is induced by interactions at the surface membrane, latex beads coated with several purified adhesion molecules or
Endocannabinoid (eCB)-binding receptors can be modulated by several ligands and membrane environment, yet the effect of glycosylation remains to be assessed. In this study, we used human neuroblastoma SH-SY5Y cells to interrogate whether expression, cellular localization, and activity of eCB-binding
Galectin decorates the cell membrane and forms an extracellular molecular association with galactoside units. Here, galactoside probes have been used to study galectin expression in neuroblastoma cells. The hypothesis behind this investigation has been that the molecular mechanisms by which glycans
Neuroblastoma cells were used to determine the effect of high carbohydrate and polyol levels on myo-inositol metabolism. The presence of elevated concentrations of glucose or sorbitol caused a significant decrease in both inositol accumulation and incorporation into phospholipid. These conditions,
The presence of 1.0mm-dibutyryl cyclic AMP (N(6),O(2')-dibutyryladenosine 3':5'-cyclic monophosphate) and 1.5mm-theophylline completely inhibits the growth of mouse neuroblastoma N2a cells by 24-36h. When compared with N2a cultures without inhibitors (controls), the proportion of cells in S phase,
BACKGROUND
Improved prediction of neuroblastoma (NB) behavior is needed to detect treatment-refractory disease and may allow further reduction in therapy for some patients. In this regard, serum metabolomic analysis has proven utility in several cancer types. We hypothesize that serum metabolomic
We have characterized receptors for the insulin-like growth factor (IGF-I) on the mouse neuroblastoma cell line N18 as well as NG108, the hybrid cell line of N18 and rat glioma (C6). In this cell-free system, IGF-I and insulin stimulated the phosphorylation of 95-kDa and 105-kDa proteins. Using