Water-soluble polysaccharides were prepared from Panax japonicus by hot water extraction and ethanol precipitation.The polysaccharides were further purified by ion exchange chromatography to obtain neutral and acidic ...Water-soluble polysaccharides were prepared from Panax japonicus by hot water extraction and ethanol precipitation.The polysaccharides were further purified by ion exchange chromatography to obtain neutral and acidic polysaccharides.The neutral polysaccharide fraction mainly contained Glc(90.2%),which was a glucan fraction.The acidic polysaccharide fraction mainly contained GalA(43.6%),Gal(21.7%),and Ara(15.4%),with a degree of methyl-esterification of 20.3%,which was a pectic polysaccharide.The acidic polysaccharide of Panax japonicus could effectively inhibit the replication of human seasonal influenza virus H1N1 and canine influenza virus H3N2 in MDCK cells and A549 cells and significantly reduce the virus titer in infected cells.It also effectively inhibited the number of infected cells of the SARS-CoV-2 South Africa strain and the Omicron strain.The acid polysaccharide of Panax japonicus showed good efficacy against influenza virus and COVID-19 infection,which could be used as a potential antiviral candidate drug molecule in the future.展开更多
基金supported by National Key Research and Development Program of China(2023YFC0871100)
文摘Water-soluble polysaccharides were prepared from Panax japonicus by hot water extraction and ethanol precipitation.The polysaccharides were further purified by ion exchange chromatography to obtain neutral and acidic polysaccharides.The neutral polysaccharide fraction mainly contained Glc(90.2%),which was a glucan fraction.The acidic polysaccharide fraction mainly contained GalA(43.6%),Gal(21.7%),and Ara(15.4%),with a degree of methyl-esterification of 20.3%,which was a pectic polysaccharide.The acidic polysaccharide of Panax japonicus could effectively inhibit the replication of human seasonal influenza virus H1N1 and canine influenza virus H3N2 in MDCK cells and A549 cells and significantly reduce the virus titer in infected cells.It also effectively inhibited the number of infected cells of the SARS-CoV-2 South Africa strain and the Omicron strain.The acid polysaccharide of Panax japonicus showed good efficacy against influenza virus and COVID-19 infection,which could be used as a potential antiviral candidate drug molecule in the future.
