预防/治疗拉沙热病毒的疗法-猫眼课题宝

预防/治疗拉沙热病毒的疗法

批准号：

7578818

负责人：

MICHAEL B OLDSTONE

金额：

$47.48万

依托单位：

SCRIPPS RESEARCH INSTITUTE, THE

依托单位国家：

美国

项目类别：

财政年份：

2004

资助国家：

美国

项目状态：

已结题

起止时间：

2004-05-01 至 2011-04-30

来源：

https://reporter.nih.gov/project-details/7578818

关键词：

Address Affinity Affinity Chromatography Africa Air Animal Model Antiviral Agents Area Arenavirus Arenavirus Infections Binding Biochemical Biological Availability Categories Cell Culture Techniques Cells Cellular Tropism Centers for Disease Control and Prevention (U.S.)Characteristics Chemicals Clinical Complex Confocal Microscopy Coupled Cultured Cells Cytoplasmic Tail Development Disease Drug Delivery Systems Drug effect disorder Drug resistance Epithelial Cells Escape Mutant Evaluation Evolution Exhibits Family Fibroblasts Frequencies Generations Genetic Genetic Transcription Glycoproteins Grant Guanarito virus Hepatocyte Human Immune Immune response Immune system Immunobiology In Vitro Individual Infection Inhibitory Concentration 50 Investigation Junin virus Label Lassa fever virus Lassa virus Lead Libraries Licensing Life Lymphocytic choriomeningitis virus Mediating Membrane Membrane Fusion Modeling Molecular Mechanisms of Action Morbidity - disease rate Mus Old World Arenaviruses Patients Peptide Signal Sequences Peptides Pharmaceutical Chemistry Pharmaceutical Preparations Photoaffinity Labels Principal Investigator Probability Production Public Health RNA Viruses RNA replication Recombinants Resistance Retroviridae Ribavirin Screening procedure Series South American hemorrhagic fever viruses Specificity Structure Structure-Activity Relationship Techniques Testing Therapeutic Therapeutic Index Therapeutic Intervention Time Toxic effect Vaccines Validation Variant Vascular Endothelial Cell Viral Viral Hemorrhagic Fevers Viral Pathogenesis Viral Physiology Virion Virus Virus Diseases Virus Inhibitors Virus Receptors abstracting analog base cell killing cell type combinatorial design drug candidate drug development drug resistant virus high throughput screening human disease in vivo inhibitor/antagonist man metropolitan mortality novel nucleoside analog particle pathogen polypeptide positional cloning prevent programs prophylactic rib bone structure small molecule small molecule libraries trafficking viral RNA

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Program Director/Principal Investigator (Last, First, Middle): Oldstone, Michael - 2 R01 AI055540-06 REVISED ABSTRACT SECTION Viral hemorrhagic fevers (VHF) caused by the arenaviruses Lassa virus (LASV), Machupo (MACV), Guanarito (GTOV), and Junin virus (JUNV) are devastating human diseases with fatality rates of 15 to 35%. There is limited antiviral treatment available. Using high-throughput screening of synthetic combinatorial small molecule libraries coupled with pseudotyped virion particles bearing the glycoproteins (GPs) of these highly pathogenic arenaviruses, we identified viral inhibitors. Our candidate small molecule inhibitors are highly active against both Old World and New World hemorrhagic arenaviruses. Initial studies revealed they efficiently block pH-dependent fusion by the arenavirus GPs (IC50 of 200-350 nM) and blocked infection by these human pathogenic viruses in cultured cells when tested in BSL-4 at the CDC. Our current proposal plans to optimize the most potent lead compounds by iterations of secondary library synthesis and screening. Optimized compounds will be tested for their anti-viral potential in cell culture and inhibitory potential against LASV assessed in a newly developed small animal model. The detailed mechanism of action of our lead candidates will be investigated and the development of drug resistant viral variants addressed. We anticipate making a significant contribution to drug development to treat these BSL-4 agents.

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