Faculty Research 1980 - 1989
Expression of hepatitis B surface antigen in human cells by a recombinant BK virus DNA vector.
Document Type
Article
Publication Date
1988
Keywords
Cell-Line, DNA-Recombinant, Genetic-Vectors, Hepatitis-B-Surface-Antigens: bi, Hepatitis-B-Virus: ge, Human, Metallothionein: ge, Polyomaviruses: ge, Promoter-Regions-(Genetics), Recombinant-Fusion-Proteins: bi, Recombinant-Proteins: bi, SUPPORT-NON-U-S-GOVT, SUPPORT-U-S-GOVT-P-H-S, Tumor-Cells-Cultured
First Page
459
Last Page
466
JAX Source
J Gen Virol 1988 Feb;69 ( Pt 2):459-66
Grant
CA29797, CA3725
Abstract
The construction of the first stable human cell lines that express and secrete authentic hepatitis B virus surface antigen (HBsAg), using a BK virus (BKV) episomal plasmid vector, is described. The amount of HBsAg produced by BKV vectors (up to 600 ng/10(7) cells) was comparable to other eukaryotic vector systems. The level of HBsAg expression remained the same regardless of the orientation of the HBsAg gene, substitution of the HBsAg gene promoter with the mouse metallothionein I gene promoter or the tissue origin of the human cell lines used to establish stable cellular transformants. Northern blot analysis also indicated synthesis of normal HBsAg transcripts. Surprisingly, however, the vectors were maintained at far lower than expected copy number (one to five copies/cell). Reasons for this are discussed.
Recommended Citation
Caputo A,
Barbanti BG,
Reschiglian P,
Gianni M,
Mottes M,
Miranda P,
Milanesi G,
Knowles BB,
Ricciardi RP.
Expression of hepatitis B surface antigen in human cells by a recombinant BK virus DNA vector. J Gen Virol 1988 Feb;69 ( Pt 2):459-66