title: Identification of differentially expressed genes in scrapie-infected mouse neuroblastoma cells.
abstract: In vitro cDNA libraries from scrapie-infected and non-infected murine neuroblastoma cell lines were screened with cDNA probes derived by subtractive hybridization from scrapie-infected and uninfected cells to identify genes with altered expression associated with scrapie infection. Eleven independent recombinant clones, whose expression was either increased or decreased in scrapie-infected cells, were identified. Expression of these genes was also analyzed in a panel of scrapie-infected and non-infected cell lines. Five genes had altered mRNA expression in most scrapie-infected neuroblastoma cell clones compared to non-infected clones. These genes were chromogranin B, intracisternal-A particle envelope, ornithine decarboxylase antizyme, heat shock protein 70 and one unidentified gene. None of these alterations in gene expression was uniquely scrapie-specific; however, the skewed association of increased expression with scrapie infection suggested that a causal relationship might exist between scrapie infection and altered expression of these genes in mouse neuroblastoma cells in vitro.
authors.affiliation: Laboratory of Persistent Viral Diseases, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, Hamilton, MT 59840, USA.
authors.forename: K
authors.initials: K
authors.lastname: Doh-ura
authors.forename: S
authors.initials: S
authors.lastname: Perryman
authors.forename: R
authors.initials: R
authors.lastname: Race
authors.forename: B
authors.initials: B
authors.lastname: Chesebro
mesh_terms: D000818:Animals; D015152:Blotting, Northern; D001921:Brain / Q000378:metabolism; D002999:Clone Cells; D018076:DNA, Complementary / Q000235:genetics; D005786:Gene Expression Regulation; D015723:Gene Library; D051379:Mice; D009420:Nervous System / Q000378:metabolism*; D009447:Neuroblastoma; D009693:Nucleic Acid Hybridization; D012323:RNA Processing, Post-Transcriptional; D012333:RNA, Messenger / Q000032:analysis*; D012608:Scrapie / Q000235:genetics*; D012641:Selection, Genetic; D017422:Sequence Analysis, DNA; D014407:Tumor Cells, Cultured
chemical_list: D018076:DNA, Complementary; D012333:RNA, Messenger