Proceedings of the National Academy of Sciences · 2003 · 774 citations · 27 references
Life SciencesInfectious DiseasesMolecular BiologyCell AdhesionMolecular VirologyVirologyAntiviral ImmunityViral HepatitisViral InfectionsViral StructureViral TropismVirus EntryAntiviral RecognitionHepatitis C InfectionPh-dependent EntryReceptor Binding SpecificityViral Entry ReceptorsViral Envelope GlycoproteinsViral Envelope ProteinsViral Glycoproteins
HIV pseudotypes bearing native hepatitis C virus (HCV) glycoproteins (strain H and Con1) are infectious for the human hepatoma cell lines Huh-7 and PLC/PR5. Infectivity depends on coexpression of both E1 and E2 glycoproteins, is pH-dependent, and can be neutralized by mAbs mapping to amino acids 412-447 within E2. Cell-surface expression of one or all of the candidate receptor molecules (CD81, low-density lipoprotein receptor, scavenger receptor class B type 1, and dendritic cell-specific intercellular adhesion molecule 3 grabbing nonintegrin) failed to confer permissivity to HIV-HCV pseudotype infection. However, HIV-HCV pseudotype infectivity was inhibited by a recombinant soluble form of CD81 and a mAb specific for CD81, suggesting that CD81 may be a component of a receptor complex.
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Binding of Hepatitis C Virus to CD81
Piero Pileri, Yasushi Uematsu, Susanna Campagnoli et al. · Science · 1998 · 2K citations