The present invention provides safe, stable, efficacious, and cost-effective vaccines based on viral expression vectors that include a parainfluenza virus 5 (PIV5) genome including a heterologous nucleotide sequence expressing a heterologous polypeptide.

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.

The present invention provides constructs of the parainfluenza virus type-5 (PIV5) virus expressing the SARS-CoV-2 envelope spike (S) and nucleocapsid (N) proteins of SARS-CoV-2 variants for use as safe, stable, efficacious, and cost-effective vaccines against COVID-19.

Disclosed are engineered oncolytic viruses, related fusion proteins and polynucleotides encoding them, and methods for treating cancer using the engineered viruses. In one aspect, disclosed herein are engineered oncolytic viruses, wherein the oncolytic virus expresses one or more exogenous membrane bound immune cell targeting ligands comprising an uncleaved signal anchor.

An anticancer agent contains a virus presenting a desired protein or peptide on a virus particle envelope, as an active ingredient.

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.

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.

The present invention provides the complete genomic sequence of the epidemic mumps virus (MuV) strain MuV.sup.Iowa/US/06. Further, a reverse genetics system was constructed and used to rescue recombinant viral constructs that are attenuated compared to rMuV.sup.Iowa/US/06 and JL vaccine viruses. Such constructs include viral constructs lacking the open reading frame (ORF) of the SH gene (rMuVΔSH) and/or incapable of expressing the V protein (rMuVΔV).

Disclosed are engineered oncolytic viruses, related fusion proteins and polynucleotides encoding them, and methods for treating cancer using the engineered viruses. In one aspect, disclosed herein are engineered oncolytic viruses, wherein the oncolytic virus expresses one or more exogenous membrane bound immune cell targeting ligands comprising an uncleaved signal anchor.

The present invention provides safe, stable, efficacious, and cost-effective vaccines based on viral expression vectors that include a parainfluenza virus 5 (PIV5) genome including a heterologous nucleotide sequence expressing a heterologous polypeptide.