Abstract
Monoclonal antibodies ME361 specific to ganglioside GD2 were isolated from the conditioned medium of hybridoma HB9326 and mouse ascitic fluid by the method of affinity chromatography; their Fab-fragments were obtained by proteolytic cleavage with papain. Evaluation of Fab-fragment specificity by flow cytometry and dot-blot analysis showed that binding effectiveness of fragments with antigens was close to that for the full-length molecule of antigen. It was shown that Fab-fragments and whole antibodies ME361 dose-dependently inhibit the proliferation of cells of mice T-lymphoma EL-4, and induce apoptosis of these cells 24 h after incubation.
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