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Eka Saputri M, Aisyah Rahmalia Effendi S, Nadila R, Azzam Fajar S, Damajanti Soejoedono R, Handharyani E, Nadia Poetri O. Immunoglobulin yolk targeting spike 1, receptor binding domain of spike glycoprotein and nucleocapsid of SARS-CoV-2 blocking RBD-ACE2 binding interaction. Int Immunopharmacol 2022; 112:109280. [PMID: 36183680 PMCID: PMC9515349 DOI: 10.1016/j.intimp.2022.109280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 09/13/2022] [Accepted: 09/22/2022] [Indexed: 11/16/2022]
Abstract
Coronavirus disease (COVID)-19 caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection has become a global pandemic disease that has social and economic chaos. An alternative mitigation strategy may involve the use of specific immunoglobulin (Ig)-Y derived from chicken eggs. Our study aimed to evaluate the neutralizing potential of specific IgY targeting S1, receptor-binding-domain (RBD) of spike glycoprotein and nucleocapsid (N) of SARS-CoV-2 to inhibit RBD and angiotensin-converting-enzyme-2 (ACE2) binding interaction. Hy-Line Brown laying hens were immunized with recombinant S1, RBD spike glycoprotein, and nucleocapsid (N) of SARS-CoV-2. The presence of specific S1,RBD,N-IgY in serum and egg yolk was verified by indirect enzyme-linked immunosorbent assay (ELISA). Specific S1,RBD,N-IgY was purified and characterized from egg yolk using sodium-dodecyl-sulfate-polyacrylamide-gel-electrophoresis (SDS-PAGE), and was subsequently evaluated for inhibition of the RBD-ACE2 binding interaction in vitro. Specific IgY was present in serum at 1 week post–initial immunization (p.i.i), whereas its present in egg yolk was confirmed at 4 weeks p.i.i. Specific S1,RBD,N-IgY in serum was able to inhibit RBD-ACE2 binding interaction between 4 and 15 weeks p.i.i. The results of the SDS-PAGE revealed the presence of bands with molecular weights of 180 kDa, indicating the presence of whole IgY. Our results demonstrated that S1,RBD,N-IgY was able to inhibit RBD-ACE2 binding interaction in vitro, suggesting its potential use in blocking virus entry. Our study also demonstrated proof-of-concept that laying hens were able to produce this specific IgY, which could block the viral binding and large production of this specific IgY is feasible.
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Affiliation(s)
- Meliana Eka Saputri
- Study Programme of Medical Microbiology, IPB Postgraduate School, IPB University, Jl Agatis, Kampus IPB Dramaga, Bogor 16680, Indonesia
| | - Siti Aisyah Rahmalia Effendi
- Study Programme of Veterinary Medicine, School of Veterinary Medicine and Biomedical Science, IPB University, Jl Agatis, Kampus IPB Dramaga, Bogor 16680, Indonesia
| | - Rifa Nadila
- Study Programme of Veterinary Medicine, School of Veterinary Medicine and Biomedical Science, IPB University, Jl Agatis, Kampus IPB Dramaga, Bogor 16680, Indonesia
| | - Syauqi Azzam Fajar
- Study Programme of Veterinary Medicine, School of Veterinary Medicine and Biomedical Science, IPB University, Jl Agatis, Kampus IPB Dramaga, Bogor 16680, Indonesia
| | - Retno Damajanti Soejoedono
- Division of Medical Microbiology, School of Veterinary Medicine and Biomedical Science, IPB University, Jl Agatis, Kampus IPB Dramaga, Bogor 16680, Indonesia
| | - Ekowati Handharyani
- Division of Veterinary Pathology, School of Veterinary Medicine and Biomedical Science, IPB University, Jl Agatis, Kampus IPB Dramaga, Bogor 16680, Indonesia
| | - Okti Nadia Poetri
- Division of Medical Microbiology, School of Veterinary Medicine and Biomedical Science, IPB University, Jl Agatis, Kampus IPB Dramaga, Bogor 16680, Indonesia.
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