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Journal of Virology, January 2005, p. 401-409, Vol. 79, No. 1
0022-538X/05/$08.00+0 doi:10.1128/JVI.79.1.401-409.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.
Dendritic Cells and Macrophages Are Productively Infected by Poliovirus
Rahnuma Wahid,1
Martin J. Cannon,1 and
Marie Chow1,2*
Departments of Microbiology and Immunology,1
Pathology, University of Arkansas for Medical Sciences, Little Rock, Arkansas2
Received 7 May 2004/
Accepted 13 August 2004
Expression of the poliovirus receptor (PVR) on cells is a major host determinant of infection by poliovirus. Previously, the only immune cell type known to express PVR was the blood-derived monocyte, which is susceptible to infection at very low frequency. We demonstrate that professional antigen-presenting cellsmacrophages and dendritic cells, generated upon differentiation of monocytesretain expression of PVR and are highly susceptible to infection by type 1 Mahoney strain of poliovirus. Maximal cell-associated titers of virus are obtained within 6 to 8 h postinfection, and cell death and lysis occurs within 24 h postinfection. Similar kinetics are observed in cells infected with the Sabin 1 vaccine strain. Although protein synthesis and receptor-mediated endocytosis are inhibited upon poliovirus infection of these critical antigen-presenting cells, we demonstrate for the first time that functional presentation of antigen occurs in these infected cells via the HLA class II pathway.
* Corresponding author. Mailing address: Department of Microbiology and Immunology, University of Arkansas for Medical Sciences, 4301 W. Markham, Slot 511, Little Rock, AR 72205. Phone: (501) 686-5155. Fax: (501) 686-5362. E-mail:
chowmarie{at}uams.edu.
Journal of Virology, January 2005, p. 401-409, Vol. 79, No. 1
0022-538X/05/$08.00+0 doi:10.1128/JVI.79.1.401-409.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.
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