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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Freigang, Stefan Bienz, Kurt Zinkernagel, Rolf M. Hengartner, Hans Egger, Denise |
| Description | Author Affiliation: Freigang S ( Institute of Experimental Immunology, University Hospital, Schmelzbergstrasse 12, 8091 Zurich, Switzerland. feigang@pathol.unizh.ch); |
| Abstract | Induction of antiviral cytotoxic T lymphocytes (CTLs) has been proposed to require cross-presentation of viral antigens derived from infected extralymphatic host cells by antigen-presenting cells (APC). This postulated mechanism of cross-priming is thought to be essential for CTL responses against viruses that do not infect professional APC, e.g., because of absence of the specific virus receptor. Here, we show for the human pathogen poliovirus that naturally nonpermissive murine APC acquire viral RNA in vivo independently of the cellular virus receptor. Uptake of poliovirus or polioviral RNA initiated neosynthesis of viral antigen to an extent sufficient to prime CTLs in vivo, which were detectable 2-3 wk after infection. Our results do not only indicate that experiments studying cross-presentation and cross-priming by using potentially amplifiable or translatable materials need careful examination, but they also question the general biological importance of cross-presentation and cross-priming in antiviral CTL responses. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 23 |
| Volume Number | 100 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2003-11-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Antigens, Viral Chemistry T-Lymphocytes, Cytotoxic Metabolism Virology Animals Antigen Presentation Antigen-Presenting Cells Antigens Antigens, CD11c Biosynthesis Cell Line, Tumor Clostridium Magnetics Mice Mice, Inbred C57BL Poliovirus Poliovirus Vaccines RNA RNA, Messenger RNA, Viral Time Factors Transfection Research Support, Non-U.S. Gov't Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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