Alphavax, Incorporated

Other

Ian Caley

Sergey A Dryga

Jonathan F Smith

Kurt Iver Kamrud

Jonathan O Rayner

Robert E Johnston

Nancy L Davis

Ronald I Swanstrom

Robert A Olmsted

Maureen Maughan

Paula M Keith

Viral replicon selected nucleic acid expression libraries are useful for analyzing multiple antigens associated with a parasite, pathogen or neoplasia or for preparing immunogenic compositions for generating immune responses specific for the parasite, pathogen or neoplasia. Alphavirus replicon particles representative of the nucleic acid expression library are preferred. The nucleic acid library can be a random library, or it can be prepared after a selection step, for example, by differential hybridization prior to cloning into the replicon vector.

Multi-antigenic alphavirus replicon particles and methods

The present invention provides compositions useful in and methods for producing populations of infectious, replication-defective alphavirus replicon particles that contain no replication competent alphavirus particles, as determined by passage on cells in culture. The compositions include helper and replicon nucleic acid molecules that can further reduce the predicted frequency for formation of replication-competent virus and can optimize manufacturing strategies and costs.

Alphavirus replicon vector systems

The present invention provides compositions useful in and methods for producing populations of infectious, replication-defective alphavirus replicon particles that contain no replication-competent alphavirus particles, as determined by passage on cells in culture. The compositions include helper and replicon nucleic acid molecules that can further reduce the predicted frequency for formation of replication-competent virus and can optimize manufacturing strategies and costs.

The present invention provides methods and compositions comprising a population of alphavirus replicon particles comprising two or more isolated nucleic acids selected from 1) an isolated nucleic acid encoding an env gene product or an immunogenic fragment thereof of a human immunodeficiency virus, 2) an isolated nucleic acid encoding a g&agr;g gene product or an immunogenic fragment thereof of a human immunodeficiency virus, wherein the g&agr;g gene product or immunogenic fragment thereof is modified to inhibit formation of virus-like particles containing the g&agr;g gene product or the immunogenic fragment thereof and their release from a cell, and 3) an isolated nucleic acid encoding a pol gene product or an immunogenic fragment thereof of a human immunodeficiency virus, wherein the pol gene product or immunogenic fragment thereof is modified to inhibit protease, integrase, RNase H and/or reverse transcriptase activity, and wherein the nucleic acids are each contained within a separate alphavirus replicon particle.

Alphavirus vectors and virosomes with modified HIV genes for use in vaccines

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Durham, NC, United States of America

Ian Caley