title: The fowl adenovirus type 1 (CELO) virus-associated RNA-encoding gene: a new ribozyme-expression vector.
abstract: A new system for hammerhead ribozyme (Rz) expression was examined in which fowl adenovirus type 1 (CELO) virus-associated RNA (CELO VA RNA) was used as a vector for the incorporation of Rz to target the mRNA of secreted alkaline phosphatase (SEAP) both in vitro and in vivo. The Rz gene was integrated into the CELO VA RNA between the internal promoter boxes A and B; apparently this did not interfere with its transcription. Rz integrated into CELO VA RNA and, lacking the viral sequences, exhibited the same activity in vitro, Consequently, CELO VA RNA sequences did not inhibit the integrated Rz activity in vitro. In vivo experiments were carried out with human 293 cells by co-transfection with plasmids containing Rz and SEAP. Inhibition of enzyme activity was 50% in 48 h. We conclude that CELO VA RNA may be used for effective expression of hammerhead Rz.
authors.affiliation: Institute of Agricultural Biotechnology, Moscow, Russian Federation.
authors.forename: A N
authors.initials: AN
authors.lastname: Zakharchuk
authors.forename: K K
authors.initials: KK
authors.lastname: Doronin
authors.forename: V A
authors.initials: VA
authors.lastname: Karpov
authors.forename: V A
authors.initials: VA
authors.lastname: Krougliak
authors.forename: B S
authors.initials: BS
authors.lastname: Naroditsky
mesh_terms: D000469:Alkaline Phosphatase / Q000235:genetics; D000259:Aviadenovirus / Q000201:enzymology / Q000235:genetics*; D001483:Base Sequence; D002460:Cell Line; D015870:Gene Expression; D005814:Genes, Viral; D005822:Genetic Vectors; D006801:Humans; D008969:Molecular Sequence Data; D009690:Nucleic Acid Conformation; D010957:Plasmids / Q000235:genetics; D016337:RNA, Catalytic / Q000235:genetics*; D012367:RNA, Viral / Q000737:chemistry / Q000235:genetics*; D014162:Transfection
chemical_list: D016337:RNA, Catalytic; D012367:RNA, Viral; D000469:Alkaline Phosphatase