Aduro Biotech Inc.

William S Luckett, Jr

Thomas W Dubensky, Jr

David N Cook

John E Hearst

Dirk G Brockstedt

Daniel A Portnoy

Keith Sadoon Bahjat

Free-living microbes are provided in which the nucleic acid has been modified so that the microbe is attenuated for proliferation and/or which comprise genetic mutations that attenuate the ability of the microbe to repair its nucleic acid. Methods of using the modified microbes for the loading, activation, and/or maturation of antigen-presenting cells are also provided. Vaccine compositions comprising the modified microbes and/or the antigen-presenting cells and methods of using the vaccines are also provided. The microbes may be further modified to include heterologous antigens, such as tumor antigens or infectious disease antigens, for use as a vaccine against cancer or infectious diseases.

Modified free-living microbes, vaccine compositions and methods of use thereof

The present invention provides recombinant nucleic acid molecules, expression cassettes, and vectors useful for expression of polypeptides, including heterologous polypeptides, such as antigens, in bacteria. Some of the recombinant nucleic acid molecules, expression cassettes and vectors comprise codon-optimized sequences encoding the polypeptides and/or signal peptides. Some of the recombinant nucleic acid molecules, expression cassettes, and expression vectors comprise sequences encoding non-Listerial and/or non-secA1 signal peptides for secretion of the polypeptides. The invention also provides bacteria comprising the nucleic acid molecules, expression cassettes, and expression vectors, as well as compositions such as vaccines comprising the bacteria. Methods of making and using the bacteria, recombinant nucleic acid molecules, and expression cassettes are also provided.

Recombinant nucleic acid molecules, expression cassettes, and bacteria, and methods of use thereof

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Richmond, CA, United States of America

William S Luckett, Jr