title: Enzyme-linked immunosorbent assay for detection of filovirus species-specific antibodies.
abstract: Several enzyme-linked immunosorbent assays (ELISAs) for the detection of filovirus-specific antibodies have been developed. However, diagnostic methods to distinguish antibodies specific to the respective species of filoviruses, which provide the basis for serological classification, are not readily available. We established an ELISA using His-tagged secreted forms of the transmembrane glycoproteins (GPs) of five different Ebola virus (EBOV) species and one Marburg virus (MARV) strain as antigens for the detection of filovirus species-specific antibodies. The GP-based ELISA was evaluated by testing antisera collected from mice immunized with virus-like particles as well as from humans and nonhuman primates infected with EBOV or MARV. In our ELISA, little cross-reactivity of IgG antibodies was observed in most of the mouse antisera. Although sera and plasma from some patients and monkeys showed notable cross-reactivity with the GPs from multiple filovirus species, the highest reactions of IgG were uniformly detected against the GP antigen homologous to the virus species that infected individuals. We further confirmed that MARV-specific IgM antibodies were specifically detected in specimens collected from patients during the acute phase of infection. These results demonstrate the usefulness of our ELISA for diagnostics as well as ecological and serosurvey studies.
authors.affiliation: Department of Global Epidemiology, Hokkaido University Research Center for Zoonosis Control, Kita-20, Nishi-10, Kita-ku, Sapporo 001-0020, Japan.
authors.forename: Eri
authors.initials: E
authors.lastname: Nakayama
authors.forename: Ayaka
authors.initials: A
authors.lastname: Yokoyama
authors.forename: Hiroko
authors.initials: H
authors.lastname: Miyamoto
authors.forename: Manabu
authors.initials: M
authors.lastname: Igarashi
authors.forename: Noriko
authors.initials: N
authors.lastname: Kishida
authors.forename: Keita
authors.initials: K
authors.lastname: Matsuno
authors.forename: Andrea
authors.initials: A
authors.lastname: Marzi
authors.forename: Heinz
authors.initials: H
authors.lastname: Feldmann
authors.forename: Kimihito
authors.initials: K
authors.lastname: Ito
authors.forename: Masayuki
authors.initials: M
authors.lastname: Saijo
authors.forename: Ayato
authors.initials: A
authors.lastname: Takada
mesh_terms: D000818:Animals; D000914:Antibodies, Viral / Q000097:blood*; D000956:Antigens, Viral / Q000235:genetics; D003429:Cross Reactions; D029043:Ebolavirus / Q000235:genetics / Q000276:immunology; D004797:Enzyme-Linked Immunosorbent Assay / Q000379:methods; D005260:Female; D016563:Filoviridae / Q000276:immunology / Q000302:isolation & purification*; D018702:Filoviridae Infections / Q000175:diagnosis* / Q000276:immunology / Q000662:veterinary*; D000882:Haplorhini; D006801:Humans; D007074:Immunoglobulin G / Q000097:blood; D007075:Immunoglobulin M / Q000097:blood; D029024:Marburgvirus / Q000235:genetics / Q000276:immunology; D051379:Mice; D008807:Mice, Inbred BALB C; D011323:Primates; D011994:Recombinant Proteins / Q000235:genetics; D012680:Sensitivity and Specificity; D014773:Virology / Q000379:methods*
chemical_list: D000914:Antibodies, Viral; D000956:Antigens, Viral; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D011994:Recombinant Proteins