Frontiers in Immunology (Aug 2020)

Computational Design of a Novel VLP-Based Vaccine for Hepatitis B Virus

  • Saeed Mobini,
  • Milad Chizari,
  • Ladan Mafakher,
  • Elmira Rismani,
  • Elham Rismani

DOI
https://doi.org/10.3389/fimmu.2020.02074
Journal volume & issue
Vol. 11

Abstract

Read online

Hepatitis B virus (HBV) is a global virus responsible for a universal disease burden for millions of people. Various vaccination strategies have been developed using viral vector, nucleic acid, protein, peptide, and virus-like particles (VLPs) to stimulate favorable immune responses against HBV. Given the pivotal role of specific immune responses of hepatitis B surface antigen (HBsAg) and hepatitis B core antigen (HBcAg) in infection control, we designed a VLP-based vaccine by placing the antibody-binding fragments of HBsAg in the major immunodominant region (MIR) epitope of HBcAg to stimulate multilateral immunity. A computational approach was employed to predict and evaluate the conservation, antigenicity, allergenicity, and immunogenicity of the construct. Modeling and molecular dynamics (MD) demonstrated the folding stability of HBcAg as a carrier in inserting Myrcludex and “a” determinant of HBsAg. Regions 1–50 and 118–150 of HBsAg were considered to have the highest stability to be involved in the designed vaccine. Molecular docking revealed appropriate interactions between the B cell epitope of the designed vaccine and the antibodies. Totally, the final construct was promising for inducing humoral and cellular responses against HBV.

Keywords