Molecular Mimicry of Hepatitis B Surface Antigen by an Anti-idiotype-derived Synthetic Peptide
Overview
Affiliations
Monoclonal antibody 2F10 is an "internal-image" anti-idiotype (anti-id) antibody capable of mimicking the group-specific "a" determinant of human hepatitis B surface antigen (HBsAg). By mRNA sequencing and computer-assisted molecular modeling of monoclonal antibody 2F10, we identified a 15-amino acid region of the heavy-chain hypervariable region that has partial residue homology with sequences of the "a" determinant epitopes of HBsAg. We have established that a linear 15-mer peptide from a contiguous region on the anti-id antibody can (i) generate anti-HBsAg-specific antibodies when injected into mice, (ii) prime murine lymph node cells for in vitro HBsAg-specific T-cell proliferative responses, and (iii) stimulate in vitro human CD4+ T cells that were primed in vivo to HBsAg by natural infection with hepatitis B virus or vaccination with a commercially available HBsAg vaccine. Significantly, this peptide could also stimulate CD4+ T cells of human hepatitis B virus carriers. We conclude that a 15-mer peptide derived from the anti-id sequence can duplicate the B- and T-cell stimulatory activity of the intact anti-id antibody and the antigen that is mimicked, HBsAg.
Deng Y, Sheng Y, Zhang G, Sun Y, Wang L, Ji P J Virol. 2024; 98(2):e0165023.
PMID: 38271227 PMC: 10878242. DOI: 10.1128/jvi.01650-23.
Virus-like Particle Vaccines: A Prospective Panacea Against an Avian Influenza Panzootic.
Ninyio N, Ho K, Omar A, Tan W, Iqbal M, Mariatulqabtiah A Vaccines (Basel). 2020; 8(4).
PMID: 33227887 PMC: 7712863. DOI: 10.3390/vaccines8040694.
Ninyio N, Ho K, Ong H, Yong C, Chee H, Hamid M Vaccines (Basel). 2020; 8(2).
PMID: 32512923 PMC: 7350026. DOI: 10.3390/vaccines8020275.
The Promise of Anti-idiotype Revisited.
Kohler H, Pashov A, Kieber-Emmons T Front Immunol. 2019; 10:808.
PMID: 31031777 PMC: 6474207. DOI: 10.3389/fimmu.2019.00808.
Li X, Xu J, Lv Z, Wang J, Sun S, Zhu W Hum Vaccin Immunother. 2015; 11(7):1735-43.
PMID: 26084003 PMC: 4514276. DOI: 10.1080/21645515.2015.1048408.