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Related Experiment Video

Updated: Apr 8, 2026

Utilizing the Antigen Capsid-Incorporation Strategy for the Development of Adenovirus Serotype 5-Vectored Vaccine Approaches
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Antigenic composition and immunoreactivity differences between HEV recombinant capsid proteins generated from

Nouredine Behloul1, Jiyue Wen1, Xing Dai1

  • 1Department of Microbiology and Immunology, Southeast University School of Medicine, Nanjing, China.

Infection, Genetics and Evolution : Journal of Molecular Epidemiology and Evolutionary Genetics in Infectious Diseases
|July 1, 2015
PubMed
Summary
This summary is machine-generated.

Hepatitis E virus (HEV) diagnostic variability was observed using recombinant proteins. Identifying a highly antigenic region in silico can improve HEV serological assays and vaccine development.

Keywords:
BioinformaticsCapsid proteinConformational epitopesHepatitis E virusLinear epitopes

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Area of Science:

  • Virology
  • Immunology
  • Bioinformatics

Background:

  • Serological diagnostics for Hepatitis E virus (HEV) exhibit significant variability.
  • Recombinant proteins derived from ORF2 of different HEV genotypes show differing immunoreactivity.

Purpose of the Study:

  • To investigate the variability in HEV serological diagnostics.
  • To identify highly antigenic regions for improved assay and vaccine development.

Main Methods:

  • Generated four recombinant proteins (p166s) from HEV ORF2 (452-617 aa) of different genotypes.
  • Utilized indirect ELISA to detect anti-HEV IgMs and IgGs in patient sera.
  • Predicted 3D-structure models and analyzed antigenic composition using bioinformatics tools.

Main Results:

  • Observed considerable variability in antigen immunoreactivity against both anti-HEV IgMs and IgGs.
  • In silico analysis identified a highly antigenic region (483-533 aa) with six key amino acids.
  • This variability can impact diagnostic accuracy and seroprevalence studies.

Conclusions:

  • The identified highly antigenic region can guide the development of more efficient HEV serological assays.
  • This finding supports the development of epitope-based vaccines for Hepatitis E.
  • Standardization of HEV diagnostics is crucial for accurate epidemiological assessments.