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Journal of Virology, April 2008, p. 4159-4163, Vol. 82, No. 8
0022-538X/08/$08.00+0     doi:10.1128/JVI.02657-07
Copyright © 2008, American Society for Microbiology. All Rights Reserved.

Human CAR Gene Expression in Nonpermissive Hamster Cells Boosts Entry of Type 12 Adenovirions and Nuclear Import of Viral DNA{triangledown} ,{dagger}

Norbert Hochstein,1,{ddagger},§ Dennis Webb,2,{ddagger},¶ Marianna Hösel,2,|| Werner Seidel,3 Sabrina Auerochs,1 and Walter Doerfler1,2*

Institute for Virology, Erlangen University Medical School, Schlossgarten 4, D-91054 Erlangen, Germany,1 Institute of Genetics, University of Cologne, Zülpicher Strasse 47, D-50674 Cologne, Germany,2 Friedrich Loeffler Institute for Medical Microbiology, University of Greifswald, Lutherstrasse 6, D-17487 Greifswald, Germany3

Received 14 December 2007/ Accepted 25 January 2008

Adenovirus type 12 (Ad12) propagation in hamster BHK21 cells is blocked prior to viral DNA replication. The amounts of Ad12 DNA in the nuclei or cytoplasm of hamster cells are about 2 orders of magnitude (2 h postinfection [p.i.]) and 4 to 5 orders of magnitude (48 h p.i.) lower than in permissive human cells. Cell line BHK21-hCAR is transgenic for and expresses the human coxsackie- and adenovirus receptor (hCAR) gene. Nuclear uptake of Ad12 DNA in BHK21-hCAR cells is markedly increased compared to that in naïve BHK21 cells. Ad12 elicits a cytopathic effect in BHK21-hCAR cells but not in BHK21 cells. Quantitative PCR or [3H]thymidine labeling followed by zone velocity sedimentation fails to detect Ad12 DNA replication in BHK21 or BHK21-hCAR cells. Newly assembled Ad12 virions cannot be detected. Thus, the block in Ad12 DNA replication in hamster cells is not released by enhanced nuclear import of Ad12 DNA.

* Corresponding author. Mailing address: Institute for Virology, Erlangen University Medical School, Schlossgarten 4, D-91054 Erlangen, Germany. Phone: 49-9131-852-6002. Fax: 49-9131-852-2101. E-mail: walter.doerfler{at}viro.med.uni-erlangen.de

{triangledown} Published ahead of print on 6 February 2008.

{dagger} Supplemental material for this article may be found at http://jvi.asm.org/.

{ddagger} These authors contributed equally to this work.

§ Present address: Department of Genetics and Pathology, Rudbeck Laboratory, Uppsala University, S-751 85 Uppsala, Sweden.

Present address: NewLab BioQuality AG, Max-Planck-Str. 15A, D-40699 Erkrath, Germany.

|| Present address: Department of Molecular Infectiology at the Center for Molecular Medicine, University of Cologne, D-50931 Cologne, Germany.

Journal of Virology, April 2008, p. 4159-4163, Vol. 82, No. 8
0022-538X/08/$08.00+0     doi:10.1128/JVI.02657-07
Copyright © 2008, American Society for Microbiology. All Rights Reserved.





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