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 Previous Article

Journal of Virology, December 2002, p. 12399-12404, Vol. 76, No. 23
0022-538X/02/$04.00+0     DOI: 10.1128/JVI.76.23.12399-12404.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.

Inhibition of Hepatitis Delta Virus RNA Editing by Short Inhibitory RNA-Mediated Knockdown of ADAR1 but Not ADAR2 Expression

Geetha C. Jayan and John L. Casey*

Division of Molecular Virology and Immunology, Georgetown University Medical Center, Rockville, Maryland 20850

Received 3 June 2002/ Accepted 21 August 2002

Hepatitis delta virus (HDV) requires host RNA editing at the viral RNA amber/W site. Of the two host genes responsible for RNA editing via deamination of adenosines in double-stranded RNAs, short inhibitory RNA-mediated knockdown of host ADAR1 expression but not that of ADAR2 led to decreased HDV amber/W editing and virus production. Despite substantial sequence and structural variation among the amber/W sites of the three HDV genotypes, ADAR1a was primarily responsible for editing all three. We conclude that ADAR1 is primarily responsible for editing HDV RNA at the amber/W site during HDV infection.

* Corresponding author. Mailing address: Department of Microbiology and Immunology, Georgetown University, 3900 Reservoir Rd., Washington, DC 20007. Phone: (202) 687-1052. Fax: (202) 687-1800. E-mail: caseyj{at}georgetown.edu.

Journal of Virology, December 2002, p. 12399-12404, Vol. 76, No. 23
0022-538X/02/$04.00+0     DOI: 10.1128/JVI.76.23.12399-12404.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.



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