Abstract: Compositions and methods for making and using therapeutic formulations of multivalent hybrid polypeptides comprising immunogenic peptides of M proteins from various different serotypes of group A streptococci and antibodies thereto are provided. Also provided are nucleic acids encoding such hybrid polypeptides. The hybrid polypeptide formulations may be used, for example, in methods for treating or preventing a microbial infection and eliciting a protective immune response having broadly protective opsonic antibodies in the absence of tissue cross-reactive antibodies.

Abstract: The present disclosure relates to compositions and methods for treating or preventing coronavirus infections. For example, compositions are provided that comprise a coronavirus S protein or N protein, fragment, or variant thereof, capable of eliciting a protective humoral and/or cell-mediated immune response, which compositions are useful for treating or preventing infection by coronavirus, such as the causative agent of SARS. Also, coronavirus S protein and N protein immunogen compositions are provided that include an adjuvant, such as Proteosome or Protollin, which may be used for treating or preventing infection caused by a coronavirus, such as a SARS coronavirus.

Abstract: Compositions and methods for making and using therapeutic formulations of multivalent hybrid polypeptides comprising immunogenic peptides of M proteins from various different serotypes of group A streptococci and antibodies thereto are provided. Also provided are nucleic acids encoding such hybrid polypeptides. The hybrid polypeptide formulations may be used, for example, in methods for treating or preventing a microbial infection and eliciting a protective immune response having broadly protective opsonic antibodies in the absence of tissue cross-reactive antibodies.

Abstract: A method for generating a mixture of activated T-cells by combining a plurality of peripheral blood lymphocytes (PBLs) with an antigen-loaded liposome to produce antigen-loaded PBLs, and combining the antigen-loaded PBLs with a naive, anergic or memory T-cell, to produce an activated T-cell. Such activation is carried out in vivo or in vitro. The antigen-loaded PBLs and activated T-cells, prepared according to the methods of invention, have use as cellular vaccines for treatment of cancer and viral diseases.