title: SV40-related T-antigen expression in human meningiomas with normal and G-22-monosomic karyotype.
abstract: Six of 16 meningiomas tested in early subcultures by indirect immunofluorescence showed SV40 T-antigen. Two different antisera specific for T-antigen were used. One serum gave a positive reaction with six tumours and the other with only two. In one T-antigen positive meningioma, the typical nuclear fluorescence changed, beginning with the second subculture, into an unusual brilliant granular pattern irregularly distributed over the nuclei. In six meningiomas, a specific chromosome aberration (monosomy G 22) was established. However, up to now, no clear correlation between karyotype and T-antigen expression could be found: cells from three meningiomas with positive reactions had normal karyotypes, whereas those from three tumours with typical chromosome loss showed no T-antigen.
mesh_terms: D000951:Antigens, Neoplasm / Q000032:analysis*; D000956:Antigens, Viral / Q000032:analysis*; D002460:Cell Line; D002869:Chromosome Aberrations; D002904:Chromosomes, Human, 21-22 and Y; D046508:Culture Techniques; D005260:Female; D006801:Humans; D007621:Karyotyping; D008297:Male; D008579:Meningioma / Q000235:genetics / Q000276:immunology*; D013539:Simian virus 40 / Q000276:immunology*
chemical_list: D000951:Antigens, Neoplasm; D000956:Antigens, Viral