DAS181, a Novel Sialidase Fusion Protein, Protects Mice from Lethal Avian Influenza H5N1 Virus Infection

Increasing resistance to currently available influenza antivirals highlights the need to develop alternate approaches for the prevention and/or treatment of influenza. DAS 181 (Fludase), a novel sialidase fusion protein that enzymatically removes sialic acids on respiratory epithelium, exhibits potent antiviral activity against influenza A and B viruses. Here, we use a mouse model to evaluate the efficacy of DAS181 treatment against a highly pathogenic avian influenza H5N1 virus. When used to treat mice daily beginning 1 day before infection with A/Vietnam/1203/2004(H5N1) virus, DAS181 treatment at 1 mg/kg/day protected 100% of mice from fatal disease, prevented viral dissemination to the brain, and effectively blocked infection in 70% of mice. DAS181 at 1 mg/kg/day was also effective therapeutically, conferring enhanced survival of H5N1 virus-challenged mice when treatment was begun 72 h after infection. This notable antiviral activity underscores the potential utility of DAS 181 as a new class of drug that is effective against influenza viruses with pandemic potential..

Medienart:

E-Artikel

Erscheinungsjahr:

2007

Erschienen:

2007

Enthalten in:

Zur Gesamtaufnahme - volume:196

Sprache:

Englisch

Beteiligte Personen:

Belser, Jessica A. [VerfasserIn]
Lu, Xiuhua [VerfasserIn]
Szretter, Kristy J. [VerfasserIn]
Jin, Xiaoping [VerfasserIn]
Aschenbrenner, Laura M. [VerfasserIn]
Lee, Alice [VerfasserIn]
Hawley, Stephen [VerfasserIn]
Kim, Do Hyong [VerfasserIn]
Malakhov, Michael P. [VerfasserIn]
Yu, Mang [VerfasserIn]
Fang, Fang [VerfasserIn]
Katz, Jacqueline M. [VerfasserIn]

Links:

Volltext

Themen:

Biological sciences
Health sciences
Research-article

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

JST048853313