JVI Figure table search 04
Home Help [Feedback] [For Subscribers] [Archive] [Search] [Contents]
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrowReprints and Permissions
Right arrow Copyright Information
Right arrow Books from ASM Press
Right arrow MicrobeWorld
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Saito, I
Right arrow Articles by Shimojo, H
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Saito, I
Right arrow Articles by Shimojo, H
J Virol. 1985 June; 54(3): 711-719

Construction of nondefective adenovirus type 5 bearing a 2.8-kilobase hepatitis B virus DNA near the right end of its genome.

I Saito, Y Oya, K Yamamoto, T Yuasa and H Shimojo

ABSTRACT

A novel helper-free adenovirus type 5 (Ad5) vector system, which utilizes a cloning site 0.2 kilobase (kb) from the right end of the genome, has been developed. To construct a nondefective Ad5 bearing the 2.8-kb DNA fragment of hepatitis B virus (HBV) at this site, we deleted the 2.1-kb nonessential E3 fragment from cloned DNA covering the right one-fourth of the Ad5 genome (76 to 100 map units), inserted the HBV DNA into this site, ligated the recombinant DNA to the rest of the Ad5 genome, and transfected the ligated DNA into human embryo kidney cells. Most of the recovered virus clones had only the E3 deletion and no HBV insertion, suggesting that a homologous recombination occurs between transfected DNAs in these cells. The isolated Ad5 virus bearing the HBV DNA (Ad5-HBL) grew without helper virus in HeLa cells as efficiently as wild-type Ad5, although the 1.9-kb major E4 transcript was detected only poorly in the early phase in the Ad5-HBL-infected cells, suggesting that the HBV DNA inserted upstream of the E4 promoter reduces the E4 transcript. HBV mRNAs transcribed from the inserted DNA were at least as abundant as Ad5 early mRNAs in the late phase of Ad5-HBL infection, but the HBV surface antigen was barely detectable in the infected-cell lysate and culture medium. This result suggests that HBV mRNAs can be transcribed from the inserted genes but no protein can be translated from the HBV mRNAs, presumably because of the translational suppression of cellular mRNAs caused by adenovirus in its late phase.


J Virol. 1985 June; 54(3): 711-719




This article has been cited by other articles:




Home Help [Feedback] [For Subscribers] [Archive] [Search] [Contents]
J. Bacteriol. Mol. Cell. Biol. Microbiol. Mol. Biol. Rev.
Clin. Vaccine Immunol. ALL ASM JOURNALS

Copyright © 1985 by the American Society for Microbiology. All rights reserved.