Key result
Norovirus GII.4 binds sialic acid in oyster tissues while GI.1 targets seasonal A-like digestive ligands.
Why the study?
The specific binding mechanisms and seasonal variation of norovirus genogroup I and II ligands in oyster tissues were not fully understood.
Population
Oysters and human norovirus strains GI.1 and GII.4
Comparison
Wild-type versus mutant GI.1 Viruslike particles in bioaccumulation experiments
Design
Preclinical evaluation of ligand attachment and bioaccumulation
Authors
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May inform strain- and season-specific oyster safety monitoring; leaves open human translation for outbreak prevention.
Distinct ligand-binding specificities and seasonal variations in ligand expression in oysters may explain the epidemiological features of norovirus outbreaks from different genogroups.
Maalouf et al. (2010) studied Norovirus accumulation in oysters. Norovirus GI.1 and GII.4 strains was evaluated on Ligand binding and seasonal expression in oyster tissues. Norovirus GII.4 strains recognized a sialic acid-containing ligand in all oyster tissues, while GI.1 strains bound an A-like ligand in the digestive tract with peak expression in late winter/spring.
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