Provided herein are genetically modified arenaviruses suitable as vaccines against neoplastic diseases or cancer. The invention also relates to pharmaceutical compositions and methods for the prevention or treatment of certain infections causing neoplastic diseases or cancer, such as infections with oncogenic viruses.Specifically, provided herein are pharmaceutical compositions, vaccines, and methods of preventing or treating diseases and conditions caused by and associated with infections with Human Papillomavirus (HPV), such as cervical cancer, anogenital cancer, head and neck cancer and skin cancers. Also provided herein are immunotherapies for the treatment of a neoplastic disease, such as a neoplastic disease caused by infection with oncogenic viruses.

Provided are HIV-1 fusion polypeptides, polynucleotides encoding such fusion polypeptides, vectors expressing such fusion polypeptides for use in eliciting an immune response against HIV-1; pharmaceutical and immunogenic compositions and kits comprising such fusion polypeptides, polynucleotides or vectors, and methods of use in treating and/or preventing HIV-1. Further provided are methods for design of antiviral vaccines, including vaccines to elicit an immune response against HIV-1.

The invention relates to recombinant measles virus expressing Lassa virus polypeptides, and concerns in particular immunogenic LASV particles expressed by a measles virus and/or virus like particles (VLPs) that contain proteins of a Lassa virus. These particles are recombinant infectious particles able to replicate in a host after an administration. The invention provides means, in particular nucleic acid constructs, vectors, cells and rescue systems to produce these recombinant infectious particles. The invention also relates to the use of these recombinant infectious particles, in particular under the form of a composition, more particularly in a vaccine formulation, for the treatment or prevention of an infection by Lassa virus.

The present application relates generally to genetically modified arenaviruses that are suitable vaccines against neoplastic diseases, such as cancer. The arenaviruses described herein may be suitable as vaccines and/or for treatment of neoplastic diseases and/or for the use in immunotherapies. In particular, provided herein are methods and compositions for treating a neoplastic disease by administering a genetically modified arenavirus in combination with a chemotherapeutic agent, wherein the arenavirus has been engineered to include a nucleotide sequence encoding a tumor antigen, tumor associated antigen or antigenic fragment thereof.

Provided herein are genetically modified arenaviruses suitable as vaccines against neoplastic diseases or cancer. The invention also relates to pharmaceutical compositions and methods for the prevention or treatment of certain infections causing neoplastic diseases or cancer, such as infections with oncogenic viruses. Specifically, provided herein are pharmaceutical compositions, vaccines, and methods of preventing or treating diseases and conditions caused by and associated with infections with Human Papillomavirus (HPV), such as cervical cancer, anogenital cancer, head and neck cancer and skin cancers. Also provided herein are immunotherapies for the treatment of a neoplastic disease, such as a neoplastic disease caused by infection with oncogenic viruses.

Provided herein are genetically engineered Pichinde viruses that include three ambisense genomic segments. The first genomic segment includes a coding region encoding a Z protein and a coding region encoding a L RdRp protein. The second genomic segment includes a coding region encoding a nucleoprotein (NP) and the third genomic segment includes a coding region encoding a glycoprotein. Each of the second and third genomic segments optionally include an additional coding region that may encode an antigen or a detectable marker. Also provided herein is a reverse genetics system for making a genetically engineered Pichinde virus, and a collection of vectors that can be used to produce a genetically engineered Pichinde virus. Further provided are methods for using a reverse genetics system, and methods for producing an immune response in a subject.

The invention relates to an infectious arenavirus particle that is engineered to contain a genome with the ability to amplify and express its genetic information in infected cells but unable to produce further infectious progeny particles in normal, not genetically engineered cells. One or more of the four arenavirus open reading frames glycoprotein (GP), nucleoprotein (NP), matrix protein Z and RNA-dependent RNA polymerase L are removed or mutated to prevent replication in normal cells but still allowing gene expression in arenavirus vector-infected cells, and foreign genes coding for an antigen or other protein of interest or nucleic acids modulating host gene expression are expressed under control of the arenavirus promoters, internal ribosome entry sites or under control of regulatory elements that can be read by the viral RNA-dependent RNA polymerase, cellular RNA polymerase I, RNA polymerase II or RNA polymerase III. The modified arenaviruses are useful as vaccines and therapeutic agents for a variety of diseases.

Provided herein are genetically engineered Pichinde viruses that include three ambisense genomic segments. The first genomic segment includes a coding region encoding a Z protein and a coding region encoding a L RdRp protein. The second genomic segment includes a coding region encoding a nucleoprotein (NP) and the third genomic segment includes a coding region encoding a glycoprotein. Each of the second and third genomic segments optionally include an additional coding region that may encode an antigen or a detectable marker. Also provided herein is a reverse genetics system for making a genetically engineered Pichinde virus, and a collection of vectors that can be used to produce a genetically engineered Pichinde virus. Further provided are methods for using a reverse genetics system, and methods for producing an immune response in a subject.

The present application relates to arenaviruses with rearrangements of their open reading frames (ORF) in their genomes. In particular, described herein is a modified arenavirus genomic segment, wherein the arenavirus genomic segment is engineered to carry a viral ORF in a position other than the wild-type position of the ORF. Also described herein are trisegmented arenavirus particles comprising one L segment and two S segments or two L segments and one S segment. The arenavirus, described herein may be suitable for vaccines and/or treatment of diseases and/or for the use in immunotherapies.

Provided are HBV immunogenic polypeptides, polynucleotides encoding such polypeptides, vectors expressing such immunogenic polypeptides for use in eliciting an immune response against HBV; pharmaceutical and immunogenic compositions and kits comprising such polypeptides, polynucleotides or vectors, and methods of use in treating and/or preventing HBV.