The present invention relates to compositions and methods for the prevention and treatment of Borrelia infection. Particularly, the present invention relates to a polypeptide comprising a hybrid C-terminal fragment of an outer surface protein A (OspA), a nucleic acid coding the same, an antibody specifically binding the same, a pharmaceutical composition (particularly for use as a medicament or in a method of treating or preventing a Borrelia infection) comprising the polypeptide and/or the nucleic acid and/or the antibody, a method of treating or preventing a Borrelia infection and a method of immunizing a subject.

The present invention provides antibodies that bind to Staphylococcus aureus Hemolysin A toxin, and methods of use. According to certain embodiments of the invention, the antibodies are fully human antibodies that bind to Hemolysin A. The antibodies of the invention are useful for inhibiting or neutralizing Hemolysin A activity, thus providing a means of preventing or treating a Hemolysin A-related disease or disorder such as S. aureus infection. In some embodiments, the antibodies of the present invention are used in treating at least one symptom or complication of a S. aureus infection.

Provided herein are antibodies and antigen binding fragments thereof specific to BCG antigen Ag85B as well as chimeric antigen receptors and lymphocytes comprising Ag85B antibodies as described and methods of treating cancer and tuberculosis infections using the CAR lymphocytes described. In a first aspect, provided herein is an isolated antibody or antigen binding fragment thereof capable of binding Bacillus Calmette-Guerin (BCG) antigen Ag85B.

Described herein are, proteins comprising amino acid substitutions in at least one of a first and a second polypeptide chain. Furthermore, is described the uses and methods related to said proteins.

Infection with obligatory intracellular bacteria is difficult to treat as intracellular targets and delivery methods of therapeutics are not well-known. Ehrlichia translocated factor-1 (Etf-1), a type IV secretion system (T4SS) effector, is a primary virulence factor for an obligatory intracellular bacterium, Ehrlichia chaffeensis. Disclosed herein are Etf-1-specific nanobodies (Nbs) that block Etf-1 functions and Ehrlichia infection. Also disclosed is a method for treating human monocytic ehrlichiosis (HME) in a subject with the disclosed nanobodies.

This disclosure provides intact bacterially derived minicells containing nucleic acids adjuvants or plasmids encoding nucleic acids adjuvants that can produce a desired immune response in target cells. This disclosure further provides methods that employ minicells to deliver nucleic acids adjuvants for use in the treatment of diseases, including neoplastic disease and cancer.

Antibodies that detect M. hyopneumoniae, methods of making those antibodies, and methods of using those antibodies including, for example, in a diagnostic immunoassay, are described. Such a diagnostic assay may be used in pen-side testing for detection of M. hyopneumoniae.

The invention discloses methods for the generation of chimaeric human—non-human antibodies and chimaeric antibody chains, antibodies and antibody chains so produced, and derivatives thereof including fully humanised antibodies; compositions comprising said antibodies, antibody chains and derivatives, as well as cells, non-human mammals and vectors, suitable for use in said methods.

Embodiments of the present invention provide methods for the treatment or prevention of infection-related immune conditions using compositions comprising IgM.

The present disclosure provides binding proteins (e.g., antibodies or antigen binding fragments thereof) that specifically bind to Klebsiella pneumoniae O2 and induce opsonophagocytic killing of Klebsiella (e.g., Klebsiella pneumoniae) and/or protects mice from a lethal Klebsiella challenge. The present disclosure also provides methods of reducing Klebsiella (e.g., Klebsiella pneumoniae) or treating or preventing Klebsiella (e.g., Klebsiella pneumoniae) infection in a subject comprising administering the Klebsiella pneumoniae O2 binding proteins, (e.g., antibodies or antigen-binding fragments thereof) to the subject.