CD46 Is a Cellular Receptor for Bovine Viral Diarrhea Virus
- 15 February 2004
- journal article
- Published by American Society for Microbiology in Journal of Virology
- Vol. 78 (4), 1792-9
- https://doi.org/10.1128/jvi.78.4.1792-1799.2004
Abstract
Various monoclonal antibodies (MAbs) that recognize cell surface proteins on bovine cells were previously shown to efficiently block infection with bovine viral diarrhea virus (BVDV) (C. Schelp, I. Greiser-Wilke, G. Wolf, M. Beer, V. Moennig, and B. Liess, Arch. Virol.140:1997-2009, 1995). With one of these MAbs, a 50- to 58-kDa protein was purified from calf thymus by immunoaffinity chromatography. Microchemical analysis of two internal peptides revealed significant sequence homology to porcine and human CD46. The cDNA of bovine CD46 (CD46bov) was cloned and further characterized. Heterologously expressed CD46bovwas detected by the MAb used for purification. A putative function of CD46bovas a BVDV receptor was studied with respect to virus binding and susceptibility of nonpermissive cells. While the expression of CD46bovcorrelated well with the binding of [3H]uridine-labeled BVDV, the susceptibility of cells nonpermissive for BVDV was not observed. However, the expression of CD46bovresulted in a significant increase in the susceptibility of porcine cells to BVDV. These results provide strong evidence that CD46bovserves as a cellular receptor for BVDV.Keywords
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