Fucoidan but not 2'-Fucosyllactose could inhibit human norovirus replication in zebrafish larvae
2020
Human noroviruses (hNoVs) cause heavy disease burden worldwide and there is no clinically approved vaccination or antivirals hitherto. In this study, with the use of a zebrafish larvae in vivo platform, we investigated the anti-hNoV potentials of fucoidan and 29-Fucosyllactose (29-FL). As a result, although both fucoidan and 2-9FL were able to block hNoV GII.4 virus-like particle (VLPs) from binding to type A saliva as expected, only fucoidan but not 2-9FL was able to inhibit the replication of hNoV GII.P16-GII.4 in zebrafish larvae, indicating the possible needs of higher molecular weights for fucosylated carbohydrates to exert anti-hNoV effect.
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