Abstract
Our studies have confirmed the presence of large concentrations of various intermediate filament proteins (IFPs) in glioma tissue compared to normal brain. This avenue of research was extended to assess the anti-proliferative activity of anti-intermediate filament protein monoclonal antibodies (anti-IFP mAbs) against human glioma cells. In this study, anti-proliferative activity of glial fibrillary acidic protein monoclonal antibodies (anti-GFAP mAbs) has been tested in vitro, using glioma cell lines prepared and established from freshly resected brain tumors. One anaplastic astrocytoma (AA), two glioblastoma multiforme (GB1 and GB2) cell lines and three anti-GFAP mAbs (B12C4, B12B4 and B6C6, all IgG1, kappa) were used. Immunofluorescence study indicated the ability of anti-GFAP mAbs to recognize the cell surface of glioma cells and the inhibition study showed that mAb B12B4 inhibited the proliferation of GB1 (96%), GB2 (85%) and AA (93%) at a concentration of 3.2 x 10(-10) M. mAb B12C4 inhibited the proliferation of GB1 (95%), GB2 (86%) and AA (94%) at a concentration of 3.26 x 10(-10) M and mAb B6C6 inhibited the proliferation of GB1 (75%), GB2 (75%) and AA (91%) at a concentration of 2.074 x 10(-10) M. Thymidine release assa...Continue Reading
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