Emory University

The Rockefeller University

Emery University

June Rothman Scott

Bernard Quigley

Vincent A Fischetti

Rama Rao Amara

Venkateswarlu Chamcha

Dorothea Zähner

Judy Caron

Barbara Froehlich

This disclosure relates to recombinant bacteria, e.g., expressing heterologous pili containing human immunodeficiency virus (HIV) antigens. In certain embodiments, the recombinant bacteria are administered in combination with other HIV antigens, nucleic acids encoding HIV antigens, recombinant virus encoding HIV antigens, anti-viral agents and/or adjuvants in an effective amount to elicit a mucosal immune response against HIV.

HIV immune stimulating compositions comprising recombinantly expressed pili on bacteria and methods related thereto

Provided herein are methods and compositions for the display of polypeptides of interest on the tip of pili of Gram-positive bacteria. According to the present invention, the polypeptide of interest is amino terminal to a Gram-positive bacterial pilus tip protein or an active variant or fragment thereof, wherein the active variant or fragment comprises a cleaved cell wall sorting signal (CWSS) motif. The Gram-positive bacterium displaying a polypeptide of interest on the tip of pili that are disclosed herein are useful, for example, in methods for immunizing a subject with an antigen and methods for removing contaminants from a composition.

Methods and compositions for the display of polypeptides on the pili of Gram-positive bacteria

Provided herein is a nucleotide sequence encoding a CS2 pilin protein of enterotoxigenic Escherichia coli. Also provided herein are the nucleotide sequences of coding sequences linked to the CS2 coding sequence, which other coding sequences must be expressed to allow the synthesis and assembly of the CS2 pili on the cell surface.

Nucleotide sequences encoding a CS2 pilin protein

Methods and compositions are provided for the cloning and expression of Streptococcus pyogenes M protein genes, and, in particular, types 5, 6 and 24 gene in single-cell host organisms. The streptococcal M protein produced by the recombinant DNA techniques described herein may be formulated for use as immunogens in vaccines to protect against S. pyogenes infections. The gene for the M protein may further be employed as a molecular probe for the accurate identification of streptococci in infected body tissues and fluids.

Production of streptococcal M protein

Methods and compositions are provided for the cloning and expression of Streptococcus pyogenes M protein genes, and, in particular, types 5, 6 and 24 genes in single-cell host organisms. The streptococcal M protein produced by the recombinant DNA techniques described herein may be formulated for use as immunogens in vaccines to protect against S. pyogenes infections. The gene for the M protein may further be employed as a molecular probe for the accurate identification of streptococci in infected body tissues and fluids.

Growing community of inventors

Atlanta, GA, United States of America

June Rothman Scott