Abstract: The present invention concerns methods and compositions for treating or preventing a bacterial infection, particularly infection by a Staphylococcus bacterium. The invention provides methods and compositions for stimulating an immune response against the bacteria. In certain embodiments, the methods and compositions involve a non-toxigenic Protein A (SpA) variant.

Abstract: Embodiments of the invention include methods and compositions useful in a vaccination strategy capable of neutralizing Hla to provide immunoprotection against S. aureus pneumonia. In certain aspects the invention includes a Hla with reduced toxicity, represented by a recombinant mutant form of Hla (HlaH35L) in which histidine 35 is converted to leucine, which can be used to abrogate the productive assembly of the toxin and protect a subject from staphylococcal pneumonia.

Abstract: The current disclosure provides novel compositions for treating bacterial infections. Accordingly, aspects of the disclosure relate to an engineered antibody comprising: LCDR1, LCDR2, and LCDR3 of the light chain variable region of the 3F6 antibody and HCDR1, HCDR2, and HCDR3 of the heavy chain variable region of the 3F6 antibody. Also provided are compositions comprising the antibodies and nucleic acids encoding either the heavy chain or light chain (or both) of the antibodies. Other aspects relate to host cells comprising the antibodies and/or nucleic acids of the disclosure. Further aspects relate to a method of preventing or treating staphylococcal infection comprising the step of administering the antibody of the disclosure to a subject in need thereof. Yet further aspects relate to a method of making the antibody comprising expressing the nucleic acid(s) of the disclosure in a cell and isolating the expressed protein.

Abstract: Provided herein are immunogenic compositions comprising a Staphylococcus aureus protein A (SpA) variant and a mutant staphylococcal leukocidin subunit polypeptide comprising a LukA polypeptide, a LukB polypeptide, and/or a LukAB dimer polypeptide, wherein the LukA polypeptide, the LukB polypeptide, and/or the LukAB dimer polypeptide have one or more amino acid substitutions, deletions, or a combination thereof.

Abstract: Embodiments concern methods and composition for preventing or treating a bacterial infection, particularly infection by a Staphylococcus bacterium. The embodiments concern improved non-toxigenic Protein A (SpA) variant.

Abstract: Embodiments concern methods and compositions for treating or preventing a bacterial infection, particularly infection by a Staphylococcus bacterium. Aspects include methods and compositions for providing a passive immune response against the bacteria. In certain embodiments, the methods and compositions involve an antibody that binds Coagulase (Coa). Further aspects relate to immunogenic compositions comprising at least one Staphylococcal coagulase R Domain, wherein the R Domain is 80% identical in sequence to a R Domain.

Abstract: Embodiments concern methods and compositions for treating or preventing a bacterial infection, particularly infection by a Staphylococcus bacterium. Aspects include methods and compositions for providing a passive immune response against the bacteria. In certain embodiments, the methods and compositions involve an antibody that binds Coagulase (Coa). Further aspects relate to immunogenic compositions comprising at least one Staphylococcal coagulase R Domain, wherein the R Domain is 80% identical in sequence to a R Domain.

Abstract: The present invention concerns methods and compositions for treating or preventing a bacterial infection, particularly infection by a Staphylococcus bacterium. The invention provides methods and compositions for stimulating an immune response against the bacteria. In certain embodiments, the methods and compositions involve a non-toxigenic Protein A (SpA) variant.

Abstract: The present invention concerns methods and compositions for treating or preventing a bacterial infection, particularly infection by a Staphylococcus bacterium. The invention provides methods and compositions for stimulating an immune response against the bacteria. In certain embodiments, the methods and compositions involve a non-toxigenic Protein A (SpA) variant.

Abstract: Embodiments of the invention include methods and compositions useful in a vaccination strategy capable of neutralizing Hla to provide immunoprotection against S. aureus pneumonia. In certain aspects the invention includes a Hla with reduced toxicity, represented by a recombinant mutant form of Hla (HlaH35L) in which histidine 35 is converted to leucine, which can be used to abrogate the productive assembly of the toxin and protect a subject from staphylococcal pneumonia.

Abstract: The present invention concerns methods and compositions for treating or preventing a bacterial infection, particularly infection by a Staphylococcus bacterium. The invention provides methods and compositions for stimulating an immune response against the bacteria. In certain embodiments, the methods and compositions involve coagulase Domains 1-2 and variants thereof.

Abstract: The present invention concerns methods and compositions for treating or preventing a bacterial infection, particularly infection by a Staphylococcus bacterium. The invention provides methods and compositions for stimulating an immune response against the bacteria. In certain embodiments, the methods and compositions involve coagulase Domains 1-2 and variants thereof.

Abstract: The present invention concerns methods and compositions for treating or preventing a bacterial infection, particularly infection by a Staphylococcus bacterium. The invention provides methods and compositions for stimulating an immune response against the bacteria. In certain embodiments, the methods and compositions involve a non-toxigenic Protein A (SpA) variant.

Abstract: The present invention concerns methods and compositions for treating or preventing a bacterial infection, particularly infection by a Staphylococcus bacterium. The invention provides methods and compositions for stimulating an immune response against the bacteria. In certain embodiments, the methods and compositions involve a non-toxigenic Protein A (SpA) variant.

Abstract: Embodiments concern methods and compositions for treating or preventing a bacterial infection, particularly infection by a Staphylococcus bacterium. Aspects include methods and compositions for providing a passive immune response against the bacteria. In certain embodiments, the methods and compositions involve an antibody that binds Coagulase (Coa). Further aspects relate to immunogenic compositions comprising at least one Staphylococcal coagulase R Domain, wherein the R Domain is 80% identical in sequence to a R Domain.

Abstract: The present invention concerns methods and compositions for treating or preventing a bacterial infection, particularly infection by a Staphylococcus bacterium. The invention provides methods and compositions for stimulating an immune response against the bacteria. In certain embodiments, the methods and compositions involve coagulase Domains 1-2 and variants thereof.

Abstract: Embodiments concern methods and compositions for treating or preventing a bacterial infection, particularly infection by a Staphylococcus bacterium. Aspects include methods and compositions for providing a passive immune response against the bacteria. In certain embodiments, the methods and compositions involve an antibody that binds Staphylococcal protein A (SpA).

Abstract: The present invention concerns methods and compositions for treating or preventing a bacterial infection, particularly infection by a Staphylococcus bacterium. The invention provides methods and compositions for stimulating an immune response against the bacteria. In certain embodiments, the methods and compositions involve coagulase Domains 1-2 and variants thereof.

Abstract: The present invention concerns methods and compositions for treating or preventing a bacterial infection, particularly infection by a Staphylococcus bacterium. The invention provides methods and compositions for stimulating an immune response against the bacteria. In certain embodiments, the methods and compositions involve a non-toxigenic Protein A (SpA) variant or an antibody directed thereto.

Abstract: The present invention concerns methods and compositions for treating or preventing a bacterial infection, particularly infection by a Staphylococcus bacterium. The invention provides methods and compositions for stimulating an immune response against the bacteria. In certain embodiments, the methods and compositions involve a non-toxigenic Protein A (SpA) variant.