α-Galactosylceramide and Novel Synthetic Glycolipids Directly Induce the Innate Host Defense Pathway and Have Direct Activity against Hepatitis B and C Viruses

Autor: Bertha Conyers, Timothy M. Block, Lijuan Wang, Anand Mehta, Robert M. Moriarty, Raymond A. Dwek, Baohua Gu, Serguey Ouzounov
Rok vydání: 2004
Předmět:
Zdroj: Antimicrobial Agents and Chemotherapy. 48:2085-2090
ISSN: 1098-6596
0066-4804
DOI: 10.1128/aac.48.6.2085-2090.2004
Popis: α-Galactosylceramide is a glycolipid derived from marine sponges that is currently in human clinical trials as an anticancer agent. It has also been shown to be effective in reducing the amount of hepatitis B virus (HBV) DNA detected in mice that produce HBV constitutively from a transgene. It was assumed that all of the antiviral and antitumor activities associated with α-galactosylceramide were mediated through the activation of NK T cells. However, we report here an additional unpredicted activity of α-galactosylceramide as a direct antiviral agent and inducer of the innate host defense pathway. To exploit this activity, we have developed a new class of smaller, orally available glycolipids that also induce the innate host defense pathway and have direct activity against HBV and hepatitis C virus.
Databáze: OpenAIRE