Gene Expression from Heterologous Promoters in a Replication-Defective Avian Retrovirus Vector in Quail Cells
| Autor: | Paul J. Hippenmeyer, Gwen G. Krivi |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
Gene Expression Regulation
Viral animal structures viruses Genetic Vectors Transfection Virus Replication Quail Cell Line Chloramphenicol acetyltransferase Retrovirus Animals Vector (molecular biology) Promoter Regions Genetic Gene Regulation of gene expression Reticuloendotheliosis virus biology Defective Viruses Promoter General Medicine Blotting Northern biology.organism_classification Virology Cell biology Blotting Southern DNA Viral RNA Viral Animal Science and Zoology Heterologous expression Plasmids |
| Zdroj: | Poultry Science. 70:982-992 |
| ISSN: | 0032-5791 |
| DOI: | 10.3382/ps.0700982 |
| Popis: | Avian retrovirus vectors, with potential for use in avian transformation, were constructed to evaluate the relative efficiency of promoters placed internal to the viral long terminal repeats (LTR). The vectors are replication-defective reticuloendotheliosis plasmids that contain the neomycin phosphotransferase gene under control of the 5' LTR and an internal promoter that directs expression of the chloramphenicol acetyltransferase gene. The internal promoters were the SV40 early, the mouse metallothionein I, and the human cytomegalovirus immediate early (HCMV-IE) promoters. Under transient conditions in QT6 cells, the HCMV-IE promoter construct was by far the strongest. However, expression dropped greatly from the HCMV-IE promoter after integration into the quail cell genome. Evidence suggests that the HCMV-IE promoter is selectively suppressed by methylation after stable transfection but not after infection. |
| Databáze: | OpenAIRE |
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