ihvr-11029 and Marburg-Virus-Disease

Host cellular endoplasmic reticulum α-glucosidases I and II are essential for the maturation of viral glycosylated envelope proteins that use the calnexin mediated folding pathway. Inhibition of these glycan processing enzymes leads to the misfolding and degradation of these viral glycoproteins and subsequent reduction in virion secretion. We previously reported that, CM-10-18, an imino sugar α-glucosidase inhibitor, efficiently protected the lethality of dengue virus infection of mice. In the current study, through an extensive structure-activity relationship study, we have identified three CM-10-18 derivatives that demonstrated superior in vitro antiviral activity against representative viruses from four viral families causing hemorrhagic fever. Moreover, the three novel imino sugars significantly reduced the mortality of two of the most pathogenic hemorrhagic fever viruses, Marburg virus and Ebola virus, in mice. Our study thus proves the concept that imino sugars are promising drug candidates for the management of viral hemorrhagic fever caused by variety of viruses.

Topics: alpha-Glucosidases; Animals; Antiviral Agents; Dengue; Dogs; Drug Evaluation, Preclinical; Ebolavirus; Endoplasmic Reticulum; Glycoside Hydrolase Inhibitors; HEK293 Cells; Hemorrhagic Fever, Ebola; Humans; Imino Sugars; Marburg Virus Disease; Marburgvirus; Mice; Mice, Inbred BALB C; Rats; Rats, Sprague-Dawley; Structure-Activity Relationship