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- W2495287835 abstract "Galectins are a family of proteins that decorate the cell membrane and form extracellular molecular associations with β-galactoside sugars. In order to mimic multivalent molecular recognitions, galactoside moieties have been immobilized on microbeads and used in cytofluorimetric analysis and in microfluidic assay to study the molecular association between carbohydrates and proteins in neuroblastoma (NB) cells. The hypothesis behind this investigation was that the molecular mechanisms by which glycans modulate neural metastatic cells involve protein-carbohydrate association. To evaluate the binding between microbeads and tumor cells, two human NB cell lines were used in cellular association experiments. GI-LI-N cells, derived from the peripheral blood of a bone marrow-infiltrated, high risk, stage IV NB patient, were chosen for metastatic characteristics; IMR-32 cells were chosen because derived from the primary tumor in the abdominal site of an unknown-stage NB patient. In vitro experiments have revealed molecular binding preferences of the metastatic NB cells. This result underscores that the efficiency of the cellular association might be related to the differences in the expression of the galectins between the two cell lines (GI-LI-N cells >> IMR-32 cells) and that the formation of the molecular association galectin-galactose could discriminate the tumor stages. Ex vivo investigations have supported in vitro results; indeed, galactose moieties mostly recognized GI-LI-N cells derived from orthotopic tumor-bearing mice respect to explanted IMR-32 cells. This molecular association was tumor cells specific because it discriminated healthy tissues. The understanding of this mechanism of recognition, and of possible cellular discrimination, can be relevant for the diagnostic monitoring of metastatic NB cells, and for producing probes tailored to interfere with galectin activities associated with the malignant phenotype. Citation Format: Giuseppina Simone, Mirco Ponzoni, Fabio Pastorino. Galactose probes hit neuroblastoma cells through a specific galactose-galectin association. [abstract]. In: Proceedings of the 107th Annual Meeting of the American Association for Cancer Research; 2016 Apr 16-20; New Orleans, LA. Philadelphia (PA): AACR; Cancer Res 2016;76(14 Suppl):Abstract nr 5112." @default.
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- W2495287835 date "2016-07-15" @default.
- W2495287835 modified "2023-09-26" @default.
- W2495287835 title "Abstract 5112: Galactose probes hit neuroblastoma cells through a specific galactose-galectin association" @default.
- W2495287835 doi "https://doi.org/10.1158/1538-7445.am2016-5112" @default.
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