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Haroun MA, Khames M, Fettata S, Khames Y, El-Hassani M, Zerouak N, Benachour K, Oumouna M. First serological evidence of MERS-CoV in dromedary camels from Algeria. Comp Immunol Microbiol Infect Dis 2023; 103:102078. [PMID: 37865007 DOI: 10.1016/j.cimid.2023.102078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 10/03/2023] [Accepted: 10/03/2023] [Indexed: 10/23/2023]
Abstract
Middle East Respiratory Syndrome (MERS) is a zoonotic disease. Dromedary camel is responsible of its transmission to humans. Accordingly, several human cases have been reported worldwide with a high mortality rate. In Algeria, no data reported on MERS prevalence in camels. This is a first seroprevalence study MERS-CoV in Algerian dromedaries. A total of 87 camel blood samples from EL -MENIAA and Ghardaia, were analyzed by anti-MERS-CoV IgG ELISA camel. The seroprevalence was 64 % and it significantly increases with age. Larger serological and molecular screening is needed to precisely determine the rate of MERS active circulation among Algerian dromedary population.
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Affiliation(s)
- Mohamed Anis Haroun
- Laboratory of Biology and Experimental Pharmacology, University of Medea, Algeria
| | - Maamar Khames
- Laboratory of Biology and Experimental Pharmacology, University of Medea, Algeria; Department of Biology, Faculty of Sciences, University of Medea, Algeria
| | - Said Fettata
- Private Veterinary Practitioner and Independent Researcher, Metlili El-Jadida, Ghardaia 47000, Algeria
| | - Yacine Khames
- Department of Biology, Faculty of Sciences, University of Medea, Algeria
| | - Mouna El-Hassani
- Laboratory of Biology and Experimental Pharmacology, University of Medea, Algeria
| | - Nawel Zerouak
- Laboratory of Biology and Experimental Pharmacology, University of Medea, Algeria
| | - Karine Benachour
- Laboratory of Biology and Experimental Pharmacology, University of Medea, Algeria; Department of Biology, Faculty of Sciences, University of Medea, Algeria
| | - Mustapha Oumouna
- Laboratory of Biology and Experimental Pharmacology, University of Medea, Algeria; Department of Biology, Faculty of Sciences, University of Medea, Algeria.
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Chen H, Li S, Wang J, He S, Wang D, Qian Z, Hu D, Qi F, Hu K, Luo C, Wang J. Simultaneous measurement of the antibody responses against SARS-CoV-2 and its multiple variants by a phage display mediated immuno-multiplex quantitative PCR-based assay. Front Microbiol 2022; 13:968036. [PMID: 36071962 PMCID: PMC9441900 DOI: 10.3389/fmicb.2022.968036] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 07/18/2022] [Indexed: 11/14/2022] Open
Abstract
To combat the continued pandemic of COVID-19, multiplex serological assays have been developed to comprehensively monitor the humoral immune response and help to design new vaccination protocols to different SARS-CoV-2 variants. However, multiplex beads and stably transfected cell lines require stringent production and storage conditions, and assays based on flow cytometry is time-consuming and its application is therefore restricted. Here, we describe a phage display system to distinguish the differences of immune response to antigenic domains of multiple SARS-CoV-2 variants simultaneously. Compared with linear peptides, the recombinant antigens displayed on the phage surface have shown some function that requires the correct folding to form a stable structure, and the binding efficiency between the recombinant phage and existing antibodies is reduced by mutations on antigens known to be important for antigen–antibody interaction. By using Phage display mediated immuno-multiplex quantitative PCR (Pi-mqPCR), the binding efficiency between the antibody and antigens of different SARS-CoV-2 variants can be measured in one amplification reaction. Overall, these data show that this assay is a valuable tool to evaluate the humoral response to the same antigen of different SARS-CoV-2 variants or antigens of different pathogens. Combined with high-throughput DNA sequencing technology, this phage display system can be further applied in monitoring humoral immune response in a large population before and after vaccination.
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Affiliation(s)
- Hanyi Chen
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - Shen Li
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - Jiali Wang
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - Siqi He
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - Dong Wang
- School of Basic Medical Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Zhaohui Qian
- NHC Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Dandan Hu
- Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Fangfang Qi
- Department of Anatomy and Neurobiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Keping Hu
- The Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Andes Antibody Technology Hengshui LL Company, Hengshui City, China
| | - Chenyi Luo
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
- Shenzhen Research Institute, Beijing University of Chinese Medicine, Shenzhen, China
- *Correspondence: Chenyi Luo,
| | - Jianxun Wang
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
- Shenzhen Research Institute, Beijing University of Chinese Medicine, Shenzhen, China
- Jianxun Wang,
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