title: Characterization of BK virus variants rescued from human tumours and tumour cell lines.
abstract: Episomal BK virus (BKV) DNA was detected in primary human brain tumours, in Kaposi's sarcoma and in cell lines from brain tumours. Ewing sarcoma and osteogenic sarcoma. Infectious BKV was rescued from several tumours and tumour cell lines by transfection of total cellular DNA into human embryonic fibroblasts. Restriction endonuclease and nucleotide sequence analysis showed that all the rescued viruses are similar to BKV-IR, a BK variant previously isolated from a human tumour of pancreatic islets, indicating that a specific BKV strain may be associated with certain types of human tumours. All the variants contain a putative transposable elements in the regulatory region of the viral genome. This region has mutagenic properties and enhancing activity in transformation, suggesting a possible role of these variants in tumour induction or progression.
authors.affiliation: Institute of Microbiology, School of Medicine, University of Ferrara, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Negrini
authors.forename: P
authors.initials: P
authors.lastname: Rimessi
authors.forename: C
authors.initials: C
authors.lastname: Mantovani
authors.forename: S
authors.initials: S
authors.lastname: Sabbioni
authors.forename: A
authors.initials: A
authors.lastname: Corallini
authors.forename: M A
authors.initials: MA
authors.lastname: Gerosa
authors.forename: G
authors.initials: G
authors.lastname: Barbanti-Brodano
mesh_terms: D000818:Animals; D001739:BK Virus / Q000235:genetics*; D001483:Base Sequence; D004279:DNA, Viral / Q000737:chemistry; D004742:Enhancer Elements, Genetic; D014644:Genetic Variation; D005910:Glioma / Q000382:microbiology*; D006801:Humans; D051379:Mice; D008969:Molecular Sequence Data; D009154:Mutation; D009690:Nucleic Acid Conformation; D051381:Rats; D012091:Repetitive Sequences, Nucleic Acid; D012509:Sarcoma / Q000382:microbiology*; D014170:Transformation, Genetic; D014407:Tumor Cells, Cultured
chemical_list: D004279:DNA, Viral