The present disclosure is directed to antibodies and antigen binding fragments thereof having binding specificity for the S protein of coronaviruses (CoV-S), such as the S protein of the SARS coronavirus 2 (SARS-COV-2-S), including neutralizing antibodies. The antibodies and antigen binding fragments thereof comprise the sequences of the VH, VL, and CDR polypeptides described herein, and the polynucleotides encoding them. The disclosure contemplates conjugates of anti-CoV-S antibodies and binding fragments thereof conjugated to one or more functional or detectable moieties. Methods of making said anti-CoV-S antibodies and antigen binding fragments thereof are also contemplated. Other embodiments of the disclosure contemplate using anti-CoV-S antibodies, and binding fragments thereof, for the diagnosis, assessment, and treatment of diseases and disorders associated with coronaviruses or the S protein thereof and conditions where neutralization or inhibition of coronaviruses or the S protein thereof would be therapeutically beneficial.

Provided are modified virus-like particles (VLPs) of paramyxoviruses, compositions containing them, methods of using the VLPs for delivery of any particular protein of interest to any of a variety of cells, kits that contain expression vectors for making, using and detecting VLPs, and methods for screening for anti-viral compounds using the VLPs. The modified VLPs contain a contiguous recombinant polypeptide that contains i) all or a segment of a C-terminal domain of a paramyxovirus nucleocapsid protein and ii) a polypeptide sequence of a distinct protein. Non-covalent complexes of paramyxovirus M protein and fusion proteins that contain a C-terminal domain of a paramyxovirus nucleocapsid protein and a polypeptide sequence of a distinct protein are provided, as are non-covalent complexes of cells, and cell receptors, with modified VLPs.

The invention relates to SARS-CoV-2 binding agents and uses thereof.

The present disclosure is directed to antibodies and antigen binding fragments thereof, or combinations of antibodies and antigen binding fragments thereof, having binding specificity for the S protein of coronaviruses (CoV-S), such as the S protein of the SARS coronavirus 2 (SARS-CoV-2-S), including neutralizing antibodies. The antibodies and antigen binding fragments thereof comprise the sequences of the VH, VL, and CDR polypeptides described herein, and the polynucleotides encoding them. The disclosure contemplates conjugates of anti-CoV-S antibodies and binding fragments thereof conjugated to one or more functional or detectable moieties. Methods of making said anti-CoV-S antibodies and antigen binding fragments thereof are also contemplated. Other embodiments of the disclosure contemplate using anti-CoV-S antibodies, and binding fragments thereof, for the diagnosis, assessment, and treatment of diseases and disorders associated with coronaviruses or the S protein thereof and conditions where neutralization or inhibition of coronaviruses or the S protein thereof would be therapeutically beneficial.

The present disclosure relates to the production of modified influenza B hemagglutinin (HA) protein. More specifically, the present disclosure relates to producing and increasing influenza virus-like particle (VLP) production in plants, wherein the VLPs comprise the modified influenza B HA proteins. The HA protein may comprise an amino acid sequence comprising at least one substitution when compared to a corresponding wildtype amino acid sequence. Further provided are nucleic acid encoding the modified B HA protein. Furthermore methods of producing an influenza virus like particle (VLP) and methods of increasing yield of production of an influenza virus like particle (VLP) in a host or host cell are also provided.