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.

Provided are an F-genotype mumps virus attenuated strain, a construction method therefor and an application thereof. The attenuated strain is a mumps virus with the accession number of CCTCC NO: V201950. Further provided are a vaccine composition containing the F-genotype mumps virus attenuated strain as an active ingredient and a preparation method thereof.

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.

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 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 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.

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.

Disclosed are engineered oncolytic viruses, related fusion proteins and polynucleotides encoding them, and methods for treating cancer using the engineered viruses.

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.