Abstract
We generated highly immunogenic virus-like particles that are based on the capsid protein VP1 of the hamster polyomavirus (HaPV-VP1) and harbor inserted foreign epitopes. The HaPV-VP1 regions spanning amino acids 81-88 (position 1), 222/223 (2), 244-246 (3), and 289-294 (4) were predicted to be surface exposed. An epitope of the pre-S1 region of the hepatitis B virus (designated S1; amino acid sequence DPAFR) was introduced into the predicted positions of VP1. All VP1/S1 fusion proteins were expressed in yeast and generated virus-like particles. Immunoassays using the S1-specific monoclonal antibody MA18/7 and immunization of C57Bl6 mice with different VP1/S1 constructs showed a pronounced reactivity and a strong S1-specific antibody response for particles carrying the insert in position 1, 2, 1+2, and 1+3. Our results suggest that HaPV-VP1 represents a highly flexible carrier moiety for the insertion of foreign sequences offering a broad range of potential uses, especially in vaccine development.
Copyright 2000 Academic Press.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Amino Acid Sequence
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Animals
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Antibodies, Monoclonal / immunology
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Antibodies, Viral / immunology
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Antigens, Viral / chemistry
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Antigens, Viral / genetics
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Antigens, Viral / immunology
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Antigens, Viral / metabolism
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Capsid / chemistry
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Capsid / genetics*
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Capsid / immunology
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Capsid / metabolism
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Capsid Proteins*
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Cricetinae
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Enzyme Multiplied Immunoassay Technique
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Epitopes / chemistry
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Epitopes / genetics*
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Epitopes / immunology*
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Epitopes / metabolism
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Genetic Vectors / genetics
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Genetic Vectors / immunology
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Hepatitis B Surface Antigens / chemistry
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Hepatitis B Surface Antigens / genetics
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Hepatitis B Surface Antigens / immunology
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Hepatitis B Surface Antigens / metabolism
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Mice
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Mice, Inbred C57BL
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Microscopy, Immunoelectron
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Models, Molecular
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Molecular Sequence Data
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Mutagenesis, Insertional / genetics*
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Peptide Fragments / chemistry
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Peptide Fragments / genetics
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Peptide Fragments / immunology
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Peptide Fragments / metabolism
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Polyomavirus / chemistry
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Polyomavirus / genetics*
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Polyomavirus / immunology*
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Polyomavirus / metabolism
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Protein Conformation
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Protein Precursors / chemistry
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Protein Precursors / genetics
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Protein Precursors / immunology
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Protein Precursors / metabolism
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Recombinant Fusion Proteins / chemistry
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Recombinant Fusion Proteins / genetics
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Recombinant Fusion Proteins / immunology
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Recombinant Fusion Proteins / metabolism
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Saccharomyces cerevisiae / genetics
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Sequence Alignment
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Vaccines, Synthetic / chemistry
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Vaccines, Synthetic / genetics
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Vaccines, Synthetic / immunology
Substances
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Antibodies, Monoclonal
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Antibodies, Viral
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Antigens, Viral
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Capsid Proteins
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Epitopes
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Hepatitis B Surface Antigens
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Peptide Fragments
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Protein Precursors
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Recombinant Fusion Proteins
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VP1 protein, polyomavirus
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Vaccines, Synthetic
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presurface protein 1, hepatitis B surface antigen