Related Experiment Video
Updated: Aug 11, 2026
Hepatitis E Virus Fluorescence Reduction Neutralization Test for Measuring Neutralizing Antibody Titers
Published on: May 22, 2026
Putative neutralization epitopes and broad cross-genotype neutralization of Hepatitis E virus confirmed by a
Suzanne U Emerson1, Pilar Clemente-Casares1, Nasser Moiduddin1
1Molecular Hepatitis and Hepatitis Viruses Section, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, 50 South Drive MSC-8009, Bethesda, MD 20892-8009, USA.
Abstract:
Monolayers of Hep G2/C3A cells were inoculated with genotype 1 Hepatitis E virus (HEV) mixed with either anti-HEV or an appropriate control. After 5 or 6 days, cell monolayers were stained with anti-HEV and infected cells were identified by immunofluorescence microscopy and counted. Anti-HEV from vaccinated or infected rhesus monkeys neutralized the virus, as did mAbs that recognized epitopes on the C terminus of a recombinant vaccine protein. Antibodies were broadly cross-reactive, since convalescent serum from animals infected with any one of the four mammalian genotypes all neutralized the genotype 1 virus.
