Epimmune Inc.

Robert W Chestnut

Alessandro D Sette

Esteban Celis

Howard M Grey

John Sidney

Scott Southwood

Brian D Livingston

Ralph T Kubo

Maria A Vitiello

Denise Marie Baker

This invention uses our knowledge of the mechanisms by which antigen is recognized by T cells to identify and prepareepitopes, and to develop epitope-based vaccines directed towards malaria. More specifically, this application communicates our discovery of pharmaceutical compositions and methods of use in the prevention and treatment of malaria. In particular, this application discloses isolated peptides comprising oligopeptides, for example the oligopeptide GVSENIFLK, or isolated peptides conjugated with T helper peptides that are used as antigens in epitope-based vaccines to prevent and/or treat malaria.

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Cytotoxic T lymphocyte responses are effectively induced to an antigen of interest, particularly viral, bacterial, parasitic and tumor antigens. Compositions, including pharmaceutical compositions, of CTL-inducing peptide and an adjuvant or a lipidated peptide which induces a helper T cell (HTL) response stimulate the antigen specific CTL response. Among the viral antigens to which the CTL responses are effectively induced in humans are those of hepatitis B. The CTL response may be optimized by a regimen of two or more booster administrations. Cocktails of two or more CTL inducing peptides are employed to optimize epitope and/or MHC class I restricted coverage.

Compositions and methods for eliciting CTL immunity

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Cardiff by the Sea, CA, United States of America

Robert W Chestnut