The present invention includes the Paramyxovirus Parainfluenza Virus 5 (PIV5) as an oncolytic agent for treating various cancers, including, but not limited to breast cancer, lung cancer and melanoma. PIV5 oncolytic agents include both wild type PIV5 and various recombinant PIV5 constructs. Recombinant PIV5 constructs may include PIV5 lacking the conserved C-terminus of the V protein (PIV5VC), PIV5 with mutations in the N-terminus of the V/P protein (PIV5CPI), and PIV5 expressing MDA-7/IL-24 (rPIV5-MDA7), rPIV5-V/P-CPI, rPIV5-CPI+, rPIV-Rev, rPIV5-RL, rPIV5-P-S157A, rPIV5-P-S308A, rPIV5-L-A1981D, rPIV5-F-5443P, rPIV5-MDA7, rPIV5SH-CPI, or rPIV5SH-Rev. Also included are methods of making and using such oncolytic agents and compositions including such oncolytic agents.

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 (rMuVSH) and/or incapable of expressing the V protein (rMuVV).

The present invention includes the Paramyxovirus Parainfluenza Virus 5 (PIV5) as an oncolytic agent for treating various cancers, including, but not limited to breast cancer, lung cancer and melanoma. PIV5 oncolytic agents include both wild type PIV5 and various recombinant PIV5 constructs. Recombinant PIV5 constructs may include PIV5 lacking the conserved C-terminus of the V protein (PIV5VAC), PIV5 with mutations in the N-terminus of the V/P protein (PIV5CPI), and PIV5 expressing MDA-7/IL-24 (rPIV5-MDA7), rPIV5-V/P-CPI, rPIV5-CPI+, rPIV-Rev, rPIV5-RL, rPIV5-P-S157A, rPIV5-P-S308A, rPIV5-L-A1981D, rPIV5-F-S443P, rPIV5-MDA7, rPIV5ASH-CPI, or rPIV5ASH-Rev. Also included are methods of making and using such oncolytic agents and compositions including such oncolytic agents.

Disclosed are: a virus vector in which a gene encoding an antigenic polypeptide is integrated in human parainfluenza virus type 2 gene, wherein the antigenic polypeptide is expressed in the form of a fusion protein with a viral structural protein; and a method for producing the same. The virus vector of the present invention contains a quantitatively large amount of the antigenic peptide on the virus particle and can efficiently deliver the antigenic polypeptide to a target cell.

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 MuV.sup.Iowa/us/06 and JL vaccine viruses. Such constructs include viral constructs lacking the open reading frame (ORF) of the SH gene (rMuVSH) and/or incapable of expressing the V protein (rMuVV).

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.

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

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