The present invention includes compositions and methods for detecting the presence of: a coronavirus or an immune response to a coronavirus infection including T cells responsive to one or more coronavirus peptides or proteins comprising, consisting of, or consisting essentially of: one or more amino acid sequences selected from SEQ ID NO: 1 to 1126, subsequences, portions, homologues, variants or derivatives; a fusion protein comprising one or more amino acid sequences selected from SEQ ID NO: 1 to 1126; a pool of peptides or proteins selected from the amino acid sequences set forth in SEQ ID NO: 1 to 1126; or a polynucleotide that encodes one or more peptides or proteins, comprising, consisting of, or consisting essentially of an amino acid sequence selected from SEQ ID NO: 1 to 1126, subsequences, portions, homologues, variants or derivatives. The invention further provides vaccines, diagnostics, therapies, and kits, comprising such proteins or peptides.

The present disclosure is directed to lysin-AMP polypeptide constructs, isolated lysin polypeptides, and pharmaceutical compositions comprising the isolated polypeptides and/or lysin-AMP polypeptide constructs. Methods of using the lysin-AMP polypeptide constructs, isolated lysin polypeptides and pharmaceutical compositions are also herein provided. In addition, isolated polynucleotides encoding the lysin-AMP polypeptide constructs and isolated lysin polypeptides are disclosed herein.

Synthetic alphavirus-derived replicon expression systems comprising nucleic acid sequences encoding at least one modified nonstructural protein, and synthetic nucleic acid sequences encoding at least one heterologous protein are described. Methods of producing at least one heterologous protein in a cell, or of inducing an immune response in a subject by administering and/or expressing the synthetic alphavirus-derived replicon expression systems are provided.

The present invention provides methods of making engineered viral proteins and protein complexes that are useful as vaccine immunogens, engineered viral proteins and protein complexes made using such methods, and pharmaceutical compositions comprising such engineered viral proteins and protein complexes. Such engineered viral proteins and protein complexes may comprise one or more cross-links that stabilize the conformation of an antibody epitope, such as a quaternary neutralizing antibody, and may exhibit an enhanced ability to elicit a protective immune response when administered to a subject as a component of a vaccine.

This disclosure relates to antigenic EBV polypeptides and their use in eliciting antibodies against EBV. Also disclosed are antigenic polypeptides comprising an EBV polypeptide and a ferritin protein.

Disclosed herein are preventing or treating a bacterial infection caused by at least one species of Gram-positive bacteria, the method comprising co-administering to a subject diagnosed with, at risk for, or exhibiting symptoms of a bacterial infection a first amount of a modified lysin polypeptide and a second amount of an antibiotic suitable for the treatment of a Gram-positive bacterial infection. Further disclosed herein are methods of augmenting the efficacy of an antibiotic or reducing the development of antibiotic resistance.

Disclosed herein are preventing or treating a bacterial infection caused by at least one species of Gram-positive bacteria, the method comprising co-administering to a subject diagnosed with, at risk for, or exhibiting symptoms of a bacterial infection a first amount of a modified lysin polypeptide and a second amount of an antibiotic suitable for the treatment of a Gram-positive bacterial infection. Further disclosed herein are methods of augmenting the efficacy of an antibiotic or reducing the development of antibiotic resistance.

The subject matter disclosed herein is generally directed to inhibition of XPR1 :KIDINS220-mediated phosphate export to treat cancer, in particular, ovarian and uterine cancers. The subject matter disclosed herein is also generally directed to determining cancer dependency on phosphate export by detecting the expression of SLC34A2. Compositions for inhibiting XPR1 :KIDINS220-mediated phosphate export are also described.

This invention provides compositions and methods to treat, prevent, and diagnose viral infections. The methods provided herein involve administering polypeptides of the invention to a subject in need thereof. The viral infections can be caused by a coronavirus such as, for example, SARS-CoV-1, SARS-CoV-2 or a variant thereof. It is contemplated that the polypeptide can be further linked to a compound, wherein the compound extends the serum half-life of the polypeptide

The present invention provides peptide compounds that regulate the complement system and methods of using these compounds. The invention is an isolated, purified peptide of 30 amino acids derived from human astrovirus protein, called CP1. The invention is directed to peptide compounds that are peptide mimetics, peptide analogs and/or synthetic derivatives of CP1 having, for example, internal peptide deletions and substitutions, deletions and substitutions at the N-terminus and C-terminus, and that are able to regulate complement activation. The invention further provides pharmaceutical compositions of therapeutically effective amounts of the peptide compounds and a pharmaceutically acceptable carrier, diluent, or excipient for treating a disease or condition associated with complement-mediated tissue damage.