Expression, purification, and characterization of anti-Zika virus envelope protein: Polyclonal and chicken-derived single chain variable fragment antibodies

Pharaoh Fellow Mwale, Chi Hsin Lee, Liang Tzung Lin, Sy Jye Leu, Yun Ju Huang, Liao Chun Chiang, Yan Chiao Mao, Yi Yuan Yang

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Zika virus (ZIKV) is a new and emerging virus that has caused outbreaks worldwide. The virus has been linked to congenital neurological malformations in neonates and Guillain–Barré syndrome in adults. Currently there are no effective vaccines available. As a result, there is a great need for ZIKV treatment. In this study, we developed single chain variable fragment (scFv) antibodies that target the ZIKV envelope protein using phage display technology. We first induced an immune response in white leghorn laying hens against the ZIKV envelope (E) protein. Chickens were immunized and polyclonal immunoglobulin yolk (IgY) antibodies were extracted from egg yolks. A high-level titer of anti-ZIKV_E IgY antibodies was detected using enzyme-linked immunosorbent assay (ELISA) after the third immunization. The titer persisted for at least 9 weeks. We constructed two antibody libraries that contained 5.3 × 106 and 4.5 × 106 transformants. After biopanning, an ELISA phage assay confirmed the enrichment of specific clones. We randomly selected 26 clones that expressed ZIKV scFv antibodies and classified them into two groups, short-linker and long-linker. Of these, four showed specific binding activities toward ZIKV_E proteins. These data suggest that the polyclonal and monoclonal scFv antibodies have the diagnostic or therapeutic potential for ZIKV.

Original languageEnglish
Article number492
JournalInternational Journal of Molecular Sciences
Volume21
Issue number2
DOIs
Publication statusPublished - Jan 13 2020

Keywords

  • Chicken immunization
  • Envelope protein
  • Immunoglobulin yolk (IgY)
  • Phage display technology
  • Single chain variable fragments (scFv)
  • Zika virus (ZIKV)

ASJC Scopus subject areas

  • Catalysis
  • Molecular Biology
  • Spectroscopy
  • Computer Science Applications
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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