The invention is directed to a system comprising a lentivirus vector particle which encodes at least one guide RNA sequence that is complementary to a first DNA sequence in a host cell genome, a Cas9 protein, and optionally a donor nucleic acid molecule comprising a second DNA sequence. The invention also is directed to a method of altering a DNA sequence in a host cell using such a system, where the host cell can be in a human and the altered DNA can be of the human β-globin gene. The invention also is directed to a fusion protein comprising a Cas9 protein and a cyclophilin A (CypA) protein. The invention also is directed to sequences of vectors that can be used in the system and method.

Disclosed herein are virus-like particle (VLP)-based bivalent vaccine compositions. The compositions may comprise a spherical retroviral Group-specific Antigen (“Gag”) protein core and at least two Ebola glycoproteins. The at least two Ebola glycoproteins may be located at the exterior surface of the spherical Gag protein core, such that the VLP-based vaccine presents at least two Ebola glycoprotein antigens. In one aspect, the at least two Ebola glycoproteins are a Zaire (EBOV) glycoprotein, and a Sudan (SUDV) glycoprotein.

The present invention relates to retroviral particle comprising a protein derived from the Gag polyprotein, an envelope protein, optionally an integrase and at least two encapsidated non-viral RNAs, the encapsidated non-viral RNAs each comprising an RNA sequence of interest bound to an encapsidation sequence, each encapsidation sequence being recognized by a binding domain introduced into the protein derived from the Gag polyprotein and/or into the integrase, and at least one of said sequences of interest of the encapsidated non-viral RNAs comprises a part coding at least one epitope and/or at least one molecular structure specifically recognizing an epitope.

The present invention provides for methods to obtain transcriptome-wide multiple information-rich samples from living cells while minimally disrupting the cell. The subject matter disclosed herein is generally related to nucleic acid constructs for continuous monitoring of live cells. Specifically, the subject matter disclosed herein is directed to nucleic acid constructs that encode a fusion protein and a construct RNA sequence that induce live cells to self-report cellular contents while maintaining cell viability. The present invention may be used to monitor gene expression in single cells while maintaining cell viability.

The present invention provides virus-like particles and methods of manufacture and use thereof. In accordance with the instant invention, virus-like particles (VLPs), particularly human immunodeficiency virus (HIV) VLPs, are provided. The HIV VLPs comprise at least one HIV structural protein and the HIV envelope protein, but lacks the HIV genome and lacks functional reverse transcriptase and integrase.

Embodiments of immunogens based on the outer domain of HIV-1 gp120 and methods of their use and production are disclosed. Nucleic acid molecules encoding the immunogens are also provided. In several embodiments, the immunogens can be used to prime an immune response to gp120 in a subject, for example, to treat or prevent an HIV-1 infection in the subject.

A method for ex vivo transduction of biomolecules from viruses, viral vectors or virus-like particles into target cells and microbubbles for use in this method. A quantity of viruses, viral vectors or virus-like particles and target cells are bound to flexible lipid shell microbubbles, bringing these into close proximity to each other that allows viral transduction, transferring biomolecules from the viruses, viral vectors or virus-like particles into the target cells while the viruses, viral vectors or virus-like particles and the target cells are bound to the microbubbles.

Various recombinant yeast suitable for use in oral vaccination, vaccine compositions, food compositions, methods of vaccinating an animal, and related methods, kits, and nucleic acid molecules are described.

Provided herein are multivalent particles and compositions of multivalent particles for blocking viral infection.

The invention relates to a virus-like particle comprising an autoantigen and an immunoregulatory molecule exposed on its surface. The invention also relates to the use of said particle in the treatment of an autoimmune disease.