Article (Scientific journals)
Multiplex Assay for Simultaneous Detection of Antibodies against Crimean-Congo Hemorrhagic Fever Virus Nucleocapsid Protein and Glycoproteins in Ruminants.
Hoste, Alexis; Djadjovski, Igor; Jiménez-Clavero, Miguel Ángel et al.
2023In Microbiology Spectrum, p. 0260022
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Keywords :
CCHFV; Crimean-Congo hemorrhagic fever virus; diagnosis; glycoproteins; multiplex assay; nucleocapsid protein; Infectious Diseases; Cell Biology; Microbiology (medical); General Immunology and Microbiology
Abstract :
[en] Crimean-Congo hemorrhagic fever virus (CCHFV) is a widespread tick-borne zoonotic virus that causes Crimean-Congo hemorrhagic fever (CCHF). CCHF is asymptomatic in infected animals but can develop into severe illness in humans, with high case-fatality rates. Due to complex environmental and socio-economic factors, the distribution of CCHFV vectors is changing, leading to disease occurrence in previously unaffected countries. Neither an effective treatment nor a vaccine has been developed against CCHFV; thus, surveillance programs are essential to limit and control the spread of the virus. Furthermore, the WHO highlighted the need of assays that can cover a range of CCHFV antigenic targets, DIVA (differentiating infected from vaccinated animals) assays, or assays for future vaccine evaluation. Here, we developed a multiplex assay, based on a suspension microarray, able to detect specific antibodies in ruminants to three recombinantly produced CCHFV proteins: the nucleocapsid (N) protein and two glycoproteins, GN ectodomain (GNe), and GP38. This triplex assay was used to assess the antibody response in naturally infected animals. Out of the 29 positive field sera to the N protein, 40% showed antibodies against GNe or GP38, with 11 out of these 12 samples being positive to both glycoproteins. To determine the diagnostic specificity of the test, a total of 147 sera from Spanish farms free of CCHFV were included in the study. This multiplex assay could be useful to detect antibodies to different proteins of CCHFV as vaccine target candidates and to study the immune response to CCHFV in infected animals and for surveillance programs to prevent the further spread of the virus. IMPORTANCE Crimean-Congo hemorrhagic fever virus (CCHFV) causes Crimean-Congo hemorrhagic fever, which is one of the most important tick-borne viral diseases of humans and has recently been found in previously unaffected countries such as Spain. The disease is asymptomatic in infected animals but can develop into severe illness in humans. As neither an effective treatment nor a vaccine has been developed against CCHFV, surveillance programs are essential to limit and control the spread of the virus. In this study, a multiplex assay detecting antibodies against different CCHFV antigens in a single sample and independent of the ruminant species has been developed. This assay could be very useful in surveillance studies, to control the spread of CCHFV and prevent future outbreaks, and to better understand the immune response induced by CCHFV.
Disciplines :
Microbiology
Author, co-author :
Hoste, Alexis  ;  Université de Liège - ULiège > Département GxABT > Microbial technologies ; Eurofins-Inmunología y Genética Aplicada S.A. (Eurofins-INGENASA S.A.), Madrid, Spain ; School of Molecular and Cellular Biology, University of Leeds, Leeds, United Kingdom
Djadjovski, Igor;  Ss. Cyril and Methodius University in Skopje, Faculty of Veterinary Medicine, Skopje, North Macedonia
Jiménez-Clavero, Miguel Ángel;  Centro de Investigación en Sanidad Animal (CISA), Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA-CSIC), Valdeolmos, Spain ; CIBER of Epidemiology and Public Health (CIBERESP), Madrid, Spain
Rueda, Paloma;  Eurofins-Inmunología y Genética Aplicada S.A. (Eurofins-INGENASA S.A.), Madrid, Spain
Barr, John N ;  School of Molecular and Cellular Biology, University of Leeds, Leeds, United Kingdom
Sastre, Patricia ;  Eurofins-Inmunología y Genética Aplicada S.A. (Eurofins-INGENASA S.A.), Madrid, Spain
Language :
English
Title :
Multiplex Assay for Simultaneous Detection of Antibodies against Crimean-Congo Hemorrhagic Fever Virus Nucleocapsid Protein and Glycoproteins in Ruminants.
Publication date :
23 February 2023
Journal title :
Microbiology Spectrum
eISSN :
2165-0497
Publisher :
American Society for Microbiology, United States
Pages :
e0260022
Peer reviewed :
Peer Reviewed verified by ORBi
European Projects :
H2020 - 721367 - HONOURs - Host switching pathogens, infectious outbreaks and zoonosis; a Marie Sklodowska-Curie Training Network
Funders :
EU - European Union [BE]
Funding text :
We thank Isabel García and Mercedes Montón for technical assistance. We thank the EU Marie Skłodowska-Curie Actions (MSCA) Innovative Training Network (ITN): H2020- MSCA-ITN-2016, under grant no. 721367 (to Alexis C. R. Hoste) and the MediLabSecure Project, supported by the European Commission (DEVCO: IFS/2018/402-247) (to Igor Djadjovski and Miguel Ángel Jiménez-Clavero).
Available on ORBi :
since 27 February 2023

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