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Characterization and epitope mapping of monoclonal antibodies to the nucleocapsid protein of severe acute respiratory syndrome coronavirus.

Identifieur interne : 003150 ( Main/Exploration ); précédent : 003149; suivant : 003151

Characterization and epitope mapping of monoclonal antibodies to the nucleocapsid protein of severe acute respiratory syndrome coronavirus.

Auteurs : Hiroaki Kariwa [Japon] ; Hiroshi Noda ; Mina Nakauchi ; Mariko Ishizuka ; Kazuaki Hashiguchi ; Shingo Hashimoto ; Kentaro Yoshii ; Atsushi Asano ; Takashi Agui ; Hiroyuki Kogaki ; Yoshihiro Kurano ; Yoshiaki Uchida ; Nobuyuki Fujii ; Masahisa Okada ; Ikuo Takashima

Source :

RBID : pubmed:18380153

Descripteurs français

English descriptors

Abstract

The sudden emergence of severe acute respiratory syndrome (SARS) at the end of 2002 resulted in 774 reported deaths from more than 8000 cases worldwide. As no effective vaccines or antiviral agents are available, the most effective measure to prevent the expansion of a SARS epidemic is the rapid diagnosis and isolation of SARS patients. To establish specific diagnostic methods, we generated nine clones of monoclonal antibodies to nucleocapsid protein (NP) of SARS-coronavirus (SARS-CoV). On immunofluorescent antibody assay and Western blotting analysis, none of the monoclonal antibodies showed cross-reactivity to authentic and recombinant NPs of human coronavirus (HCoV) 229E strain. To determine the region on the NP molecule where the monoclonal antibodies bind, we generated four truncated recombinant NPs and analyzed the reactivity between monoclonal antibodies and truncated NPs. Two monoclonal antibodies reacted with a truncated NP covering from amino acid residues 111 to 230, and seven reacted with another truncated NP covering from amino acid residues 221 to 340. Epitope mapping analysis indicated that monoclonal antibody SN5-25 recognized the amino acid sequence Q(245)TVTKK(250) On SARS-NP. Within the epitope, Q245, T246, V247, K249, and K250 appeared to form an essential motif for monoclonal antibody SN5-25 to bind. The information about binding sites and epitopes of monoclonal antibodies may be useful for the development of new diagnostic methods for SARS and for analyzing the function of N protein of SARS-CoV.

PubMed: 18380153


Affiliations:


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Le document en format XML

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<name sortKey="Kariwa, Hiroaki" sort="Kariwa, Hiroaki" uniqKey="Kariwa H" first="Hiroaki" last="Kariwa">Hiroaki Kariwa</name>
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<nlm:affiliation>Laboratory of Public Health, Department of Environmental Veterinary Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Japan. kariwa@vetemed.hokudai.ac.jp</nlm:affiliation>
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<name sortKey="Ishizuka, Mariko" sort="Ishizuka, Mariko" uniqKey="Ishizuka M" first="Mariko" last="Ishizuka">Mariko Ishizuka</name>
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<name sortKey="Asano, Atsushi" sort="Asano, Atsushi" uniqKey="Asano A" first="Atsushi" last="Asano">Atsushi Asano</name>
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<name sortKey="Agui, Takashi" sort="Agui, Takashi" uniqKey="Agui T" first="Takashi" last="Agui">Takashi Agui</name>
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<name sortKey="Kogaki, Hiroyuki" sort="Kogaki, Hiroyuki" uniqKey="Kogaki H" first="Hiroyuki" last="Kogaki">Hiroyuki Kogaki</name>
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<term>Amino Acid Sequence</term>
<term>Amino Acids (chemistry)</term>
<term>Animals</term>
<term>Antibodies, Monoclonal (chemistry)</term>
<term>Antibodies, Monoclonal (immunology)</term>
<term>Antibodies, Viral (chemistry)</term>
<term>Antibody Specificity</term>
<term>Blotting, Western (veterinary)</term>
<term>Chlorocebus aethiops</term>
<term>Cloning, Molecular</term>
<term>Coronavirus 229E, Human</term>
<term>Cross Reactions</term>
<term>Epitope Mapping</term>
<term>Fluorescent Antibody Technique, Indirect (veterinary)</term>
<term>Humans</term>
<term>Mice</term>
<term>Nucleocapsid Proteins (chemistry)</term>
<term>Nucleocapsid Proteins (genetics)</term>
<term>Nucleocapsid Proteins (immunology)</term>
<term>Rabbits</term>
<term>Reverse Transcriptase Polymerase Chain Reaction (veterinary)</term>
<term>SARS Virus (immunology)</term>
<term>Severe Acute Respiratory Syndrome (diagnosis)</term>
<term>Severe Acute Respiratory Syndrome (veterinary)</term>
<term>Vero Cells</term>
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<term>Acides aminés ()</term>
<term>Animaux</term>
<term>Anticorps antiviraux ()</term>
<term>Anticorps monoclonaux ()</term>
<term>Anticorps monoclonaux (immunologie)</term>
<term>Cartographie épitopique</term>
<term>Cellules Vero</term>
<term>Clonage moléculaire</term>
<term>Coronavirus humain 229E</term>
<term>Humains</term>
<term>Lapins</term>
<term>Protéines nucléocapside ()</term>
<term>Protéines nucléocapside (génétique)</term>
<term>Protéines nucléocapside (immunologie)</term>
<term>RT-PCR (médecine vétérinaire)</term>
<term>Réactions croisées</term>
<term>Souris</term>
<term>Spécificité des anticorps</term>
<term>Syndrome respiratoire aigu sévère (diagnostic)</term>
<term>Syndrome respiratoire aigu sévère (médecine vétérinaire)</term>
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<term>Technique d'immunofluorescence indirecte (médecine vétérinaire)</term>
<term>Technique de Western (médecine vétérinaire)</term>
<term>Virus du SRAS (immunologie)</term>
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<term>Amino Acids</term>
<term>Antibodies, Monoclonal</term>
<term>Antibodies, Viral</term>
<term>Nucleocapsid Proteins</term>
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<keywords scheme="MESH" type="chemical" qualifier="genetics" xml:lang="en">
<term>Nucleocapsid Proteins</term>
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<keywords scheme="MESH" type="chemical" qualifier="immunology" xml:lang="en">
<term>Antibodies, Monoclonal</term>
<term>Nucleocapsid Proteins</term>
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<keywords scheme="MESH" qualifier="diagnosis" xml:lang="en">
<term>Severe Acute Respiratory Syndrome</term>
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<term>Syndrome respiratoire aigu sévère</term>
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<term>Protéines nucléocapside</term>
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<term>Anticorps monoclonaux</term>
<term>Protéines nucléocapside</term>
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<term>SARS Virus</term>
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<term>Technique d'immunofluorescence indirecte</term>
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<term>Blotting, Western</term>
<term>Fluorescent Antibody Technique, Indirect</term>
<term>Reverse Transcriptase Polymerase Chain Reaction</term>
<term>Severe Acute Respiratory Syndrome</term>
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<keywords scheme="MESH" xml:lang="en">
<term>Amino Acid Sequence</term>
<term>Animals</term>
<term>Antibody Specificity</term>
<term>Chlorocebus aethiops</term>
<term>Cloning, Molecular</term>
<term>Coronavirus 229E, Human</term>
<term>Cross Reactions</term>
<term>Epitope Mapping</term>
<term>Humans</term>
<term>Mice</term>
<term>Rabbits</term>
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<keywords scheme="MESH" xml:lang="fr">
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<term>Animaux</term>
<term>Anticorps antiviraux</term>
<term>Anticorps monoclonaux</term>
<term>Cartographie épitopique</term>
<term>Cellules Vero</term>
<term>Clonage moléculaire</term>
<term>Coronavirus humain 229E</term>
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<term>Lapins</term>
<term>Protéines nucléocapside</term>
<term>Réactions croisées</term>
<term>Souris</term>
<term>Spécificité des anticorps</term>
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<front>
<div type="abstract" xml:lang="en">The sudden emergence of severe acute respiratory syndrome (SARS) at the end of 2002 resulted in 774 reported deaths from more than 8000 cases worldwide. As no effective vaccines or antiviral agents are available, the most effective measure to prevent the expansion of a SARS epidemic is the rapid diagnosis and isolation of SARS patients. To establish specific diagnostic methods, we generated nine clones of monoclonal antibodies to nucleocapsid protein (NP) of SARS-coronavirus (SARS-CoV). On immunofluorescent antibody assay and Western blotting analysis, none of the monoclonal antibodies showed cross-reactivity to authentic and recombinant NPs of human coronavirus (HCoV) 229E strain. To determine the region on the NP molecule where the monoclonal antibodies bind, we generated four truncated recombinant NPs and analyzed the reactivity between monoclonal antibodies and truncated NPs. Two monoclonal antibodies reacted with a truncated NP covering from amino acid residues 111 to 230, and seven reacted with another truncated NP covering from amino acid residues 221 to 340. Epitope mapping analysis indicated that monoclonal antibody SN5-25 recognized the amino acid sequence Q(245)TVTKK(250) On SARS-NP. Within the epitope, Q245, T246, V247, K249, and K250 appeared to form an essential motif for monoclonal antibody SN5-25 to bind. The information about binding sites and epitopes of monoclonal antibodies may be useful for the development of new diagnostic methods for SARS and for analyzing the function of N protein of SARS-CoV.</div>
</front>
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