title: Invasiveness in vitro and biological markers in human primary glioblastomas.
abstract: Invasion of spheroids from 20 human primary glioblastomas into precultured fetal rat brain tissue in culture has been studied and quantified. Between 30 and 98 percent of the normal brain tissue was destroyed by invading glioma cells within 4 days. The degree of invasion did not correlate with patient survival. A slightly higher invasiveness and shorter survival was seen in tumors with EGF receptor overexpression, and the opposite pattern was found for tumors with a TP53 mutation. The degree of invasiveness in vitro was far higher than would be expected from the dynamics of clinically observed tumor spread. This suggests that mechanisms suppressing invasion may be operative in the normal brain; alternatively the differences may be due to a higher permissiveness of the fetal brain tissue for invasion in vitro.
authors.affiliation: The Gade Institute, Department of Pathology, University of Bergen, Haukeland Hospital, Norway.
authors.forename: O D
authors.initials: OD
authors.lastname: Laerum
authors.forename: S J
authors.initials: SJ
authors.lastname: Nygaar
authors.forename: S
authors.initials: S
authors.lastname: Steine
authors.forename: S J
authors.initials: SJ
authors.lastname: Mørk
authors.forename: O
authors.initials: O
authors.lastname: Engebraaten
authors.forename: A
authors.initials: A
authors.lastname: Peraud
authors.forename: P
authors.initials: P
authors.lastname: Kleihues
authors.forename: H
authors.initials: H
authors.lastname: Ohgaki
mesh_terms: D000328:Adult; D000368:Aged; D034961:Antigens, Nuclear; D001345:Autoradiography; D014408:Biomarkers, Tumor; D001932:Brain Neoplasms / Q000235:genetics* / Q000401:mortality / Q000473:pathology*; D004252:DNA Mutational Analysis; D004273:DNA, Neoplasm / Q000032:analysis / Q000235:genetics; D066246:ErbB Receptors / Q000235:genetics*; D005091:Exons / Q000235:genetics; D005260:Female; D016147:Genes, Tumor Suppressor; D005909:Glioblastoma / Q000235:genetics* / Q000401:mortality / Q000473:pathology*; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D009687:Nuclear Proteins / Q000235:genetics; D018807:Polymorphism, Single-Stranded Conformational
chemical_list: D034961:Antigens, Nuclear; D014408:Biomarkers, Tumor; D004273:DNA, Neoplasm; D009687:Nuclear Proteins; D066246:ErbB Receptors