A lentiviral vector and a method for delivering an exogenous RNA by the lentiviral vector are provided. The lentiviral vector is prepared by transfecting plasmids containing a genome sequence of the lentiviral vector into a virus-producing cell, collecting a supernatant and concentration. Specifically, according to the principle of combining an RNA-binding protein with an RNA sequence identified by the RNA-binding protein, the RNA-binding protein is integrated into a skeleton of a lentivirus GagPol long-chain protein, and the RNA sequence identified by the RNA-binding protein is connected to the exogenous target RNA, so that the exogenous target RNA is packaged into lentiviral particles during the assembly of the lentiviral particles. The exogenous target RNA can be mRNA, gRNA or RNA with other functions. The present invention can be used in the fields of gene editing, gene therapy, cell therapy, immunotherapy, regenerative medicine and basic biology.

This invention relates to novel anti-HIV antibodies that can be used in the treatment and detection of human immunodeficiency virus (HIV). These antibodies exhibit a high degree of sensitivity and can provide a broad range of specificity.

Live attenuated viruses are provided. The viruses, when assembled, include one or more SHREK proteins and are thereby rendered non-infective and attenuated, and can be safely used in vaccines, e.g. to treat or prevent infections and to eliminate e.g. latent virus reservoirs.

Provided herein are compositions and methods for editing the genome of a eukaryotic cell.

Provided are compositions, systems, and methods useful for effecting gene editing in eukaryotic cells. Compositions include plasmids that encode one or more viral fusion proteins in which one or more viral proteins are fused with an aptamer-binding protein. Compositions also include plasmids that encode a non-viral nucleic acid sequence, wherein the non-viral nucleic acid sequence encodes a CRISPR system component. In some instances, the non-viral nucleic acid sequence also includes an aptamer sequence. The plasmids can be used to generate viral particles, including lentivirus-like particles that contain a viral fusion protein and a non-viral RNA sequence. Systems of producing such viral particles are provided. Also provided are methods of using the viral particles of the disclosure to effect gene editing in eukaryotic cells.

We have developed a series of Ebola vims envelope glycoprotein (EboGP)-based chimeric fusion proteins that are still able to maintain an efficient EboGP-mediated virus entry in various cell types including human antigen-presenting cells (APCs) while presenting large viral polypeptides, such as HIV Env v3-v5 domain (as large as 241 aa), at the apex and the sides of each EboGP monomer to elicit robust host immune responses. This invention demonstrates the feasibility of an EboGP-based chimeric fusion technology as a novel vaccine approach against different microbial pathogens, including that in human and animals, and against cancers.

The present invention provides novel scaffolded HIV-1 vaccine immunogens. Some of the scaffolded immunogens contain a soluble gp140 trimer linked to the N-terminus of the nanoparticle subunit and a T-helper epitope that is fused via a short peptide spacer to the C-terminus of the nanoparticle subunit. Some other immunogens of the invention contain a soluble gp140 trimer protein that is linked to a stable nanoparticle via a short peptide spacer that is a T-helper epitope. Some of the scaffolded immunogens contain a gp140 trimer immunogen presented on a nanoparticle platform formed with I3-01 protein, E2p, or variants of protein 1VLW. Also provided in the invention are nucleic acids that encode the various vaccine immunogens described herein, and expression vectors and host cells harboring the nucleic acids. The invention further provides methods of using the scaffolded HIV-1 vaccine immunogens for preventing or treating HIV infections.

The invention relates to a fusion protein comprising a polypeptide of interest, a transmembrane domain and an HIV gag polypeptide, or their functionally equivalent variants. The invention also relates to the polynucleotides, vectors, host cells and virus-like particles expressing or presenting said fusion proteins and to the pharmaceutical, immunogenic or vaccines composition containing said fusion proteins, polynucleotides, vectors, host cells and virus-like particles and their use in human and veterinary medicine.

A method of producing a virus like particle (VLP) in a plant, and compositions comprising VLPs, are provided. The method involves introducing a nucleic acid comprising a regulatory region active in the plant and operatively linked to a chimeric nucleotide sequence encoding, in series, an ectodomain from a virus trimeric surface protein or fragment thereof, fused to an influenza transmembrane domain and cytoplasmic tail, into the plant, or portion of the plant, the ectodomain is from a non-influenza virus trimeric surface protein and heterologous with respect to the influenza transmembrane domain, and the cytoplasmic tail. The plant or portion of the plant are incubated under conditions that permit the expression of the nucleic acid, thereby producing the VLP. A VLP produced by this method are also provided.

The present invention relates to novel therapeutic approaches for treating or preventing diseases in mammals, particularly in human subjects, using a PLA2-GIB cofactor, or a modulator of a PLA2-GIB cofactor.