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Journal of Virology, August 2003, p. 8934-8947, Vol. 77, No. 16
0022-538X/03/$08.00+0     DOI: 10.1128/JVI.77.16.8934-8947.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.

Reovirus-Induced Alteration in Expression of Apoptosis and DNA Repair Genes with Potential Roles in Viral Pathogenesis

Roberta L. DeBiasi,1,2,3 Penny Clarke,2 Suzanne Meintzer,2 Robert Jotte,4,5 B. K. Kleinschmidt-Demasters,2,6 Gary L. Johnson,5,7 and Kenneth L. Tyler2,3,8,9,10*

Departments of Pediatrics,1 Neurology,2 Hematology and Oncology,4 Pharmacology,5 Pathology,6 Medicine,8 Microbiology,9 and Immunology,10 Program in Molecular Signal Transduction, University of Colorado Health Sciences Center,7 Denver Veterans Affairs Medical Center, Denver, Colorado 802203

Received 14 January 2003/ Accepted 19 May 2003

Reoviruses are a leading model for understanding cellular mechanisms of virus-induced apoptosis. Reoviruses induce apoptosis in multiple cell lines in vitro, and apoptosis plays a key role in virus-induced tissue injury of the heart and brain in vivo. The activation of transcription factors NF-{kappa}B and c-Jun are key events in reovirus-induced apoptosis, indicating that new gene expression is critical to this process. We used high-density oligonucleotide microarrays to analyze cellular transcriptional alterations in HEK293 cells after infection with reovirus strain T3A (i.e., apoptosis inducing) compared to infection with reovirus strain T1L (i.e., minimally apoptosis inducing) and uninfected cells. These strains also differ dramatically in their potential to induce apoptotic injury in hearts of infected mice in vivo—T3A is myocarditic, whereas T1L is not. Using high-throughput microarray analysis of over 12,000 genes, we identified differential expression of a defined subset of genes involved in apoptosis and DNA repair after reovirus infection. This provides the first comparative analysis of altered gene expression after infection with viruses of differing apoptotic phenotypes and provides insight into pathogenic mechanisms of virus-induced disease.

* Corresponding author. Mailing address: Department of Neurology (B-182), University of Colorado Health Sciences Center, 4200 East 9th Ave., Denver, CO 80262. Phone: (303) 393-4684. Fax: (303) 393-4686. E-mail: Ken.Tyler{at}uchsc.edu.

Journal of Virology, August 2003, p. 8934-8947, Vol. 77, No. 16
0022-538X/03/$08.00+0     DOI: 10.1128/JVI.77.16.8934-8947.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.



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