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Expression of a Large Single-Chain 13F6 Antibody with Binding Activity against Ebola Virus-Like Particles in a Plant System
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Expression of a Large Single-Chain 13F6 Antibody with Binding Activity against Ebola Virus-Like Particles in a Plant System
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Journal Article
Expression of a Large Single-Chain 13F6 Antibody with Binding Activity against Ebola Virus-Like Particles in a Plant System
2020
Overview
Pathogenic animal and human viruses present a growing and persistent threat to humans worldwide. Ebola virus (EBOV) causes zoonosis in humans. Here, two structurally different anti-Ebola 13F6 antibodies, recognizing the heavily glycosylated mucin-like domain (MLD) of the glycoprotein (GP), were expressed in transgenic Nicotiana tabacum plants and designed as inexpensive and effective diagnostic antibodies against Ebola virus disease (EVD). The first was anti-EBOV 13F6 full size antibody with heavy chain (HC) and light chain (LC) (monoclonal antibody, mAb 13F6-FULL), while the second was a large single-chain (LSC) antibody (mAb 13F6-LSC). mAb 13F6-LSC was constructed by linking the 13F6 LC variable region (VL) with the HC of mAb 13F6-FULL using a peptide linker and extended to the C-terminus using the endoplasmic reticulum (ER) retention motif KDEL. Agrobacterium-mediated plant transformation was employed to express the antibodies in N. tabacum. PCR, RT-PCR, and immunoblot analyses confirmed the gene insertion, transcription, and protein expression of these antibodies, respectively. The antibodies tagged with the KDEL motif displayed high-mannose type N-glycan structures and efficient binding to EBOV-like particles (VLPs). Thus, various forms of anti-EBOV plant-derived mAbs 13F6-FULL and LSC with efficient binding affinity to EBOV VLP can be produced in the plant system.
Publisher
MDPI AG,MDPI
Subject
Antibodies, Viral - biosynthesis
/ Antibodies, Viral - genetics
/ Antibodies, Viral - immunology
/ Antigens
/ Peptides
/ Plants, Genetically Modified - genetics
/ Plants, Genetically Modified - immunology
/ Plants, Genetically Modified - metabolism
/ Proteins
/ Recombinant Proteins - biosynthesis
/ Recombinant Proteins - genetics
/ Recombinant Proteins - immunology
/ Single-Chain Antibodies - biosynthesis
/ Single-Chain Antibodies - genetics
