Provided herein are methods and compositions for stabilization of active agents. The active agents are distributed, mixed or embedded in a silk fibroin matrix, thereby retaining the bioactivity of the active agents upon storage and/or transportation. In some embodiments, the storage-stable vaccine-silk compositions are also provided herein.

Provided are compositions and methods for introducing proteins into cells. The compositions and methods relate to introducing a foreign protein as an engineered component of a paramyxovirus virus like particle (VLP). The compositions and methods pertain to modified VLPs that contain a contiguous recombinant polypeptide comprising i) all or a segment of a C-terminal domain of a paramyxovirus nucleocapsid protein and ii) a polypeptide sequence of a distinct protein that is an enzyme such as a recombinase.

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.

Embodiments of a recombinant human Parainfluenza Virus (hPIV) F ectodomain trimer stabilized in a prefusion conformation are provided. Also disclosed are nucleic acids encoding the hPIV F ectodomain trimer and methods of producing the hPIV F ectodomain trimer. Methods for inducing an immune response in a subject are also disclosed. In some embodiments, the method can be a method for treating or inhibiting a hPIV infection in a subject by administering a effective amount of the recombinant hPIV F ectodomain trimer to the subject.

A recombinant, attenuated mumps virus is described. The recombinant virus is based on the genotype A Jeryl Lynn vaccine strain, but is modified to express genotype G consensus fusion (F) and hemagglutinin-neuraminidase (HN) proteins. The recombinant virus optionally includes a mutation that prevents expression of viral protein V. The recombinant mumps virus can be used as a vaccine to inhibit mumps virus infection and the development of mumps disease.

This application relates to methods for assessing patient populations and determining subpopulations vulnerable to viral infection, methods of reducing the risk of infection and/or inducing heterologous immunity to said viral infection.

This invention pertains to the identification of antibody mediated epitope mimics and applications of the identification of said mimic peptides in the design of biotherapeutics and vaccines.

Recombinant paramyxoviruses including a viral genome encoding a heterologous gene are provided. In several embodiments, the recombinant paramyxovirus is a recombinant parainfluenza virus, such as a recombinant PIV3 including a viral genome encoding a heterologous respiratory syncytial virus F ectodomain linked to the transmembrane domain and the cytoplasmic tail of the F protein from the PIV3. Nucleic acid molecules including the genome of a recombinant paramyxoviruses are also provided. The recombinant viruses may advantageously be used in vaccine formulations, such as for vaccines against parainfluenza virus and respiratory syncytial virus.

This document relates to methods and materials for virotherapy. For example, this document provides methods and materials for treating cancer using a recombinant mumps virus as an oncolytic agent.

A composition for treating or preventing COVID-19 infection is described. The composition includes attenuated Measles virus particles; attenuated Mumps virus particles; attenuated Rubella II virus particles; scorpion antivenom; and a pharmaceutically acceptable carrier. The composition can be used in a method of treating COVID-19 infection in a subject, and can also be used in a method of vaccinating a subject to decrease the risk or severity of infection by COVID-19.