title: Characterization of Tu-2449, a glioma cell line derived from a spontaneous tumor in GFAP-v-src-transgenic mice: comparison with established murine glioma cell lines.
abstract: Glial fibrillary acidic protein (GFAP)-v-src transgenic mice develop spontaneous gliomas with a high incidence of malignant progression. We characterize the first glial cell line derived from v-src transgenic mice, Tu-2449 in comparison with a virally induced murine glioma, SRB-10, and a spontaneous murine glioma, P497. Doubling times were lowest, as clonogenicity in soft agar was highest for Tu-2449, and to a lesser degree, Tu-2449 cells formed spheroids and showed migratory behaviour and invaded fetal rat brain aggregates. BCL-2 and BAX expression were lower in Tu-2449 and P497 than in SRB-10 cells. Only Tu-2449 cells accumulated p53 protein in response to genotoxic stress. Tu-2449 and SRB-10 cells that showed low CD95 expression were resistant to CD95 ligand (CD95L)-induced apoptosis unless coexposed to CD95L and inhibitors of RNA or protein synthesis. A chemosensitivity profile revealed Tu-2449 to be rather chemoresistant. Tu-2449 thus displays growth characteristics and patterns of resistance to apoptosis similar to those of other mouse and human glioma cell lines and may therefore become a valuable tool to evaluate new therapies for malignant gliomas in vitro and in vivo.
authors.affiliation: Laboratory of Molecular Neuro-Oncology, Department of Neurology, University of Tubingen, D-72076 Tubingen, Germany.
authors.forename: U
authors.initials: U
authors.lastname: Pohl
authors.forename: W
authors.initials: W
authors.lastname: Wick
authors.forename: J
authors.initials: J
authors.lastname: Weissenberger
authors.forename: J P
authors.initials: JP
authors.lastname: Steinbach
authors.forename: J
authors.initials: J
authors.lastname: Dichgans
authors.forename: A
authors.initials: A
authors.lastname: Aguzzi
authors.forename: M
authors.initials: M
authors.lastname: Weller
mesh_terms: D000818:Animals; D000972:Antineoplastic Agents, Phytogenic / Q000494:pharmacology; D017209:Apoptosis; D002166:Camptothecin / Q000494:pharmacology; D002455:Cell Division / Q000235:genetics; D002465:Cell Movement / Q000235:genetics; D019008:Drug Resistance, Neoplasm; D053222:Fas Ligand Protein; D016391:Genes, src / Q000235:genetics*; D005904:Glial Fibrillary Acidic Protein / Q000235:genetics*; D005910:Glioma / Q000378:metabolism* / Q000473:pathology*; D008562:Membrane Glycoproteins / Q000494:pharmacology; D051379:Mice; D008822:Mice, Transgenic / Q000235:genetics*; D009361:Neoplasm Invasiveness; D011518:Proto-Oncogene Proteins / Q000096:biosynthesis; D019253:Proto-Oncogene Proteins c-bcl-2 / Q000096:biosynthesis; D051381:Rats; D014407:Tumor Cells, Cultured; D014410:Tumor Stem Cell Assay; D016159:Tumor Suppressor Protein p53 / Q000096:biosynthesis; D051028:bcl-2-Associated X Protein; D051020:bcl-X Protein; D019014:fas Receptor / Q000096:biosynthesis
chemical_list: D000972:Antineoplastic Agents, Phytogenic; C494827:Bax protein, mouse; C494828:Bax protein, rat; C494812:Bcl2l1 protein, mouse; C494813:Bcl2l1 protein, rat; C505661:FASLG protein, human; D053222:Fas Ligand Protein; C505658:Fasl protein, mouse; C505662:Faslg protein, rat; D005904:Glial Fibrillary Acidic Protein; D008562:Membrane Glycoproteins; D011518:Proto-Oncogene Proteins; D019253:Proto-Oncogene Proteins c-bcl-2; D016159:Tumor Suppressor Protein p53; D051028:bcl-2-Associated X Protein; D051020:bcl-X Protein; D019014:fas Receptor; D002166:Camptothecin