The present disclosure relates to combination therapy methods of treating a subject having cancer, comprising administering to the subject a) an effective amount of a pharmaceutical composition comprising a phosphatidylinositol 3-kinase (PI3K) pathway inhibitor, or a pharmaceutically acceptable salt thereof, and b) an effective amount of a pharmaceutical composition comprising a glucagon receptor antagonist.

Provided herein are proteins that include at least one B cell domain and at least one T cell domain. Also provided are compositions that include one or more of the proteins and methods for using the proteins.

The invention relates generally to chimeric viral fusion proteins comprising the ectodomain and optionally the transmembrane domain of a first viral fusion protein (e.g., a spike protein of a coronavirus) and the cytoplasmic domain of a second viral fusion protein (e.g. RSV), immunogenic compositions comprising such chimeric proteins, and methods of use of same.

A recombinant coronavirus vaccine is provided. Methods of making and delivering the coronavirus vaccine also are provided along with a method of generating and anti-coronavirus immune response. A microneedle array is provided, along with methods of making and using the microneedle array.

Disclosed herein are nanoparticles comprising mannose conjugated chitosan and an inactivated influenza A virus (IAV) antigen, wherein the mannose conjugated chitosan encapsulates the inactivated IAV antigen. In some embodiments, the nanoparticle further comprises tripolyphosphate. Also disclosed are methods of reducing transmission of an influenza A virus, and methods of eliciting an immune response against an influenza A virus, in a subject compared to a control comprising administering to the subject a nanoparticle comprising mannose conjugated chitosan and an inactivated influenza A virus (IAV) antigen, wherein the mannose conjugated chitosan encapsulates the inactivated IAV antigen.

Compositions comprising a recombinant adenovirus of type Ad26 comprising a polynucleotide that encodes an antigen, kits of parts and methods of using these compositions for inducing an immune response in a subject are provided.

Described are immunogenic proteins against Clostridium difficile. Also described are compositions comprising the immunogenic proteins. Further described are methods of preventing or treating a Clostridium difficile infection in a subject in need thereof.

Some aspects of this disclosure provide modified mRNA (modRNA) encoding retinaldehyde dehydrogenase (RALDH) enzyme, in addition to methods of synthesis, administration, use, and treatment. In some embodiments, the modRNA may be used in a vaccine to treat infections (e.g., mucosal infections) and/or cancers (e.g., mucosal cancers).

The present disclosure provides Severe Acute Respiratory Syndrome coronavirus 2 (SARS-CoV-2) vaccines, recombinant vesicular stomatitis virus (VSV) vectors encoding the SARS-CoV-2 spike (S) protein or an immunogenic variant thereof, recombinant replicable VSV particles having a SARS-CoV-2 S protein or an immunogenic variant thereof on the surface of the particles, and immunogenic recombinant proteins comprising a SARS-CoV-2 S protein or a variant thereof. Immunogenic compositions comprising the SARS-CoV-2 vaccines, the recombinant VSV vectors, the recombinant replicable VSV particles and/or the immunogenic recombinant proteins may be used for inducing an immune response to the SARS-CoV-2, preventing infection by the SARS-CoV-2, vaccinating against the SARS-CoV-2 and/or producing adaptive mutants of the recombinant replicable VSV particles.

The present invention concerns materials and method for delivery and internalization of an agent into a cell even in the presence of an immune response, such as antibodies or antisera or immune cells that bind to the agent. The agent can be a compound, drug, peptide, protein, nucleic acid, antigen, immunogen, or other biological molecule. In one embodiment, the agent is operatively linked to a lectin-based carrier. The present invention can be used for delivery and cellular internalization of any entity where an immune response to the entity is present or is likely to be produced or developed. The present invention also concerns methods and materials for providing for an adjuvant and carrier for vaccinations of a person or animal. The present invention also concerns a method for treating or preventing a disease or condition in a human or animal wherein the human or animal has produced or will produce an immune response against a therapeutic agent that can treat said disease or condition, the method comprising administering to the human or animal an effective amount of said therapeutic agent operatively linked to a lectin-based carrier.