Anti-herpes simplex virus target of an acidic polysaccharide, nostoflan, from the edible blue-green alga Nostoc flagelliforme.
The acidic polysaccharide nostoflan was previously isolated as an antiviral component from the terrestrial alga Nostoc flagelliforme. In the present study, we examined the target for its anti-herpes simplex virus type 1 action. In time-of-addition experiments, the most sensitive stage of viral replication to nostoflan was found to be early events, including the virus binding and/or penetration processes. In order to determine what extent nostoflan may be involved in these processes, virus binding and penetration assays were separately performed. The results indicated that the inhibition of virus binding to but not penetration into host cells was responsible for the antiherpetic effect induced by nostoflan. Our study suggests that nostoflan may be a potential antiherpes agent.
Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan.
Kenji
K
Kanekiyo
Kyoko
K
Hayashi
Hiroyuki
H
Takenaka
Jung-Bum
JB
Lee
Toshimitsu
T
Hayashi
D000327:Adsorption; D000818:Animals; D000998:Antiviral Agents / Q000302:isolation & purification / Q000494:pharmacology*; D002522:Chlorocebus aethiops; D018259:Herpesvirus 1, Human / Q000187:drug effects; D046937:Nostoc / Q000737:chemistry*; D011134:Polysaccharides / Q000302:isolation & purification / Q000494:pharmacology*; D018139:Simplexvirus / Q000187:drug effects* / Q000378:metabolism; D014709:Vero Cells; D014764:Viral Proteins / Q000096:biosynthesis; D014779:Virus Replication / Q000187:drug effects
D000998:Antiviral Agents; D011134:Polysaccharides; D014764:Viral Proteins; C502997:nostoflan