The present invention relates to a virus-derived particle comprising one or more Cas protein(s), as well as to kits and methods using the same for altering a target nucleic acid.

The present invention relates to a virus-derived particle comprising one or more Cas protein(s), as well as to kits and methods using the same for altering a target nucleic acid.

The present invention relates to a virus-derived particle comprising one or more Cas protein(s), as well as to kits and methods using the same for altering a target nucleic acid.

Compositions of matter and methods for using the composition of matter may be provided. The method may include providing a virus-like particle (VLP) comprising C. elegans retrotransposon 1 (Cer1) and a heterologous RNA-based agent to an organism and allowing the organism to transfer the heterologous RNA-based agent to a tissue within the organism.

Described herein are engineered paraneoplastic Ma protein (PNMA) capable of forming a capsid. In some embodiments, the engineered PNMA proteins comprise one or more modifications that enhance binding or loading of a cargo into the capsid, one or more modifications that modify cell-specificity of the capsid, one or more modifications that enhance intracellular delivery of the capsid, or a combination thereof. Also described herein are delivery systems comprising capsids comprising an engineered PNMA protein and a cargo.

Provided herein are compositions, systems, and methods for delivering cargo to a target cell. The compositions, systems, and methods comprise one or more polynucleotides encoding one or more LTR retroelement polypeptides for forming a delivery vesicle and one or more capture moieties for packaging a cargo within the delivery vesicle. The one or more LTR retroelement polypeptides for forming a delivery vesicle may comprise two or more of an LTR retroelement gag protein, a retroelement envelope protein, an LTR retroelement reverse transcriptase, or a combination thereof. The LTR retroelement polypeptide alone, the LTR retroelement envelope protein alone, or both the LTR retroelement-derived polypeptide and LTR retroelement envelope protein may be endogenous.

Human-derived virus-like particles (heVLPs), comprising a membrane comprising a phospholipid bilayer with one or more HERV-derived envelope proteins on the external side; one or more HERV-derived GAG proteins in the heVLP core, and a cargo molecule, e.g., a biomolecule and/or chemical cargo molecule, disposed in the core of the heVLP on the inside of the membrane, wherein the heVLP does not comprise a gag protein, except for gag proteins that are encoded in the human genome or gag proteins that are encoded by a consensus sequence that is derived from gag proteins found in the human genome, and methods of use thereof for delivery of the cargo molecule to cells.

Human-derived virus-like particles (heVLPs), comprising a membrane comprising a phospholipid bilayer with one or more HERV-derived envelope proteins on the external side; one or more HERV-derived GAG proteins in the heVLP core, and a cargo molecule, e.g., a biomolecule and/or chemical cargo molecule, disposed in the core of the heVLP on the inside of the membrane, wherein the heVLP does not comprise a gag protein, except for gag proteins that are encoded in the human genome or gag proteins that are encoded by a consensus sequence that is derived from gag proteins found in the human genome, and methods of use thereof for delivery of the cargo molecule to cells.

The present invention relates to a virus-derived particle comprising one or more Cas protein(s), as well as to kits and methods using the same for altering a target nucleic acid.

Human-derived virus-like particles (heVLPs), comprising a membrane comprising a phospholipid bilayer with one or more HERV-derived envelope proteins on the external side; one or more HERV-derived GAG proteins in the heVLP core, and a cargo molecule, e.g., a biomolecule and/or chemical cargo molecule, disposed in the core of the heVLP on the inside of the membrane, wherein the heVLP does not comprise a gag protein, except for gag proteins that are encoded in the human genome or gag proteins that are encoded by a consensus sequence that is derived from gag proteins found in the human genome, and methods of use thereof for delivery of the cargo molecule to cells.