| Literature DB >> 15302208 |
Patricia M A de Graaff1, Jojanneke Heidema, Martien C Poelen, Mariska E A van Dijk, Michael V Lukens, Sjef P J van Gestel, Judith Reinders, Erik Rozemuller, Marcel Tilanus, Peter Hoogerhout, Cecile A C M van Els, Robbert G van der Most, Jan L L Kimpen, Grada M van Bleek.
Abstract
CD4 T cells play a crucial role during virus infections by producing antiviral cytokines and by regulating humoral and cellular immune responses. Unfortunately however, exaggerated CD4 T cell responses can cause significant immune-mediated disease as was observed during RSV infections in children previously vaccinated with a formalin-inactivated virus in the 1960s. It has been observed that vaccination with the G protein of RSV tends to prime mice for a similar Th2-mediated enhanced disease. Whether the G protein may play a role in enhanced disease in man is unclear. In the present study, we identified an immunodominant epitope in the conserved region of the G protein encompassing amino acid residues 162-175. This epitope is presented in the context of HLA-DPB1*0401 and DPB1*0402, the most prevalent HLA class II alleles. Importantly, in some patients, a mixed Th1/Th2 response against this epitope was found in bronchoalveolar lavage samples during primary RSV infections.Entities:
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Year: 2004 PMID： 15302208 DOI： 10.1016/j.virol.2004.06.008
Source DB: PubMed Journal: Virology ISSN： 0042-6822 Impact factor: 3.616