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Originally published In Press as doi:10.1074/jbc.M106955200 on January 11, 2002
J. Biol. Chem., Vol. 277, Issue 12, 10427-10434, March 22, 2002
YB-1 Relocates to the Nucleus in Adenovirus-infected Cells and
Facilitates Viral Replication by Inducing E2 Gene Expression through
the E2 Late Promoter*
Per S.
Holm §¶,
Stephan
Bergmann **,
Karsten
Jürchott ,
Hermann
Lage§,
Karsten
Brand ,
Axel
Ladhoff§,
Klaus
Mantwill ,
David T.
Curiel ,
Matthias
Dobbelstein§§,
Manfred
Dietel§,
Bernd
Gänsbacher , and
Hans-Dieter
Royer ¶¶
From the Institut für Experimentelle Onkologie
und Therapieforschung, Technische Universität München,
Klinikum Rechts der Isar, München 81675, Germany, the
§ Institut für Pathologie, Universitätsklinikum
Charité, Humboldt-Universität zu Berlin, Berlin 10117, Germany, the Max-Delbrück Zentrum für Molekulare
Medizin, Berlin 13125, Germany, the §§ Institut
für Virologie, Philipps-Universität Marburg, Marburg 35037, Germany, the ¶¶ Institut für
Transplantationsdiagnostik und Zelltherapeutika and the
** Institut für Humangenetik und Anthropologie,
Heinrich-Heine Universität Düsseldorf, Düsseldorf
40225, Germany, and the  Gene Therapy
Program, University of Alabama at Birmingham, Wallace Tumor Institute,
Birmingham, Alabama 352948
The adenovirus early proteins E1A and
E1B-55kDa are key regulators of viral DNA replication, and it
was thought that targeting of p53 by E1B-55kDa is essential for this
process. Here we have identified a previously unrecognized function of
E1B for adenovirus replication. We found that E1B-55kDa is involved in
targeting the transcription factor YB-1 to the nuclei of adenovirus
type 5-infected cells where it is associated with viral inclusion
bodies believed to be sites of viral transcription and replication. We show that YB-1 facilitates E2 gene expression through the E2 late promoter thus controlling E2 gene activity at later stages of infection. The role of YB-1 for adenovirus replication was demonstrated with an E1-minus adenovirus vector containing a YB-1 transgene. In
infected cells, AdYB-1 efficiently replicated and produced infectious
progeny particles. Thus, adenovirus E1B-55kDa protein and the host cell
factor YB-1 act jointly to facilitate adenovirus replication in the
late phase of infection.
*
This work was supported by Grant Ho 1482/2-2 from the
Deutsche Forschungsgemeinschaft (to P. S. H.) and by a Berliner
Krebsgesellschaft grant (to H.-D. R.).The costs of publication of this
article were defrayed in part by the
payment of page charges. The article
must therefore be hereby marked
"advertisement" in
accordance with 18 U.S.C. Section
1734 solely to indicate this fact.
¶
To whom correspondence should be addressed: Institut für
Experimentelle Onkologie und Therapie, Technische Universität
München, Klinikum Rechts der Isar, Ismaningerstrasse 22, München 81675, Germany. Tel.: 49-89-4140-4452; Fax:
49-89-4140-4476; E-mail: per.s.holm@lrz.tum.de.
Copyright © 2002 by The American Society for Biochemistry and Molecular Biology, Inc.

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Copyright © 2002 by the American Society for Biochemistry and Molecular Biology.
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