The present invention provides polypeptides, compositions, and methods useful for the inhibition of transcription factor/DNA-speckle association and for manipulation of nuclear speckle content. Also included are methods of treating speckle related cancers in subjects in need thereof.

The present invention provides lyophilized formulations of active agents, particularly of TAT-NR2B9c, as chloride salts. TAT-NR2B9c has shown promise for treating stroke, aneurysm, subarachnoid hemorrhage and other neurological or neurotraumatic conditions. The chloride salt of TAT-NR2B9c shows improved stability compared with the acetate salt form of prior formulations. Formulations of the chloride salt of TAT-NR2B9c are stable at ambient temperature thus facilitating maintenance of supplies of such a formulation in ambulances for administration at the scene of illness or accident or in transit to a hospital.

The present application relates to methods of producing exosomes. The application also provides a method for preparing a protein composition comprising culturing an exosome-producing cell expressing a Nef-fusion protein comprising a Nef-derived peptide fused to a protein of interest; isolating exosomes from the exosome-producing cell culture; and purifying the protein of interest from the isolated exosomes. The application further discloses compositions that comprise exosomes containing the Nef-fusion protein, as well as methods of using the Nef-fusion protein and exosomes containing the Nef-fusion protein.

The present application relates to methods of producing exosomes. The application also provides a method for preparing a protein composition comprising culturing an exosome-producing cell expressing a Nef-fusion protein comprising a Nef-derived peptide fused to a protein of interest; isolating exosomes from the exosome-producing cell culture; and purifying the protein of interest from the isolated exosomes. The application further discloses compositions that comprise exosomes containing the Nef-fusion protein, as well as methods of using the Nef-fusion protein and exosomes containing the Nef-fusion protein.

The present disclosure relates to methods for producing lentiviral vector-producing cells. Specifically the methods utilize two plasmids, rather than four, to provide the required packaging elements and transfer vector to a cell, allowing for the production of a large number of lentiviral producer cells, including suspension-based cells, and the production of high amounts of lentivirus. These methods allow for the production of cells that can be later induced to produce lentivirus, and can be tailored to include a specific gene of interest.

The present application relates to methods of producing exosomes. The application also provides a method for preparing a protein composition comprising culturing an exosome-producing cell expressing a Nef-fusion protein comprising a Nef-derived peptide fused to a protein of interest; isolating exosomes from the exosome-producing cell culture; and purifying the protein of interest from the isolated exosomes. The application further discloses compositions that comprise exosomes containing the Nef-fusion protein, as well as methods of using the Nef-fusion protein and exosomes containing the Nef-fusion protein.

Instead of generating immune responses to several HIV proteins and risk over activating more CD4+ T cells (easy targets for HIV-1 infection) as current candidate vaccines try to do, a lower magnitude, narrowly focused, well maintained virus specific CD8+ T cell response to multiple subtypes should destroy and eliminate a few founder viruses without inducing inflammatory responses that may activate more CD4+ T cells and provide more targets for HIV-1 virus infection. Specifically, described herein is a method that focuses the immune response to the 12 protease cleavage sites.

The present specification provides immunosuppressive Tat derivative polypeptides, compositions, and methods of using such polypeptides and compositions to treat an autoimmune disease, an inflammation-associated disease and/or a neurodegenerative disease.

The recombinant rhesus cytomegalovirus (RhCMV) and human cytomegalovirus (HCMV) vectors of this invention encode heterologous antigens, such as pathogen-specific antigens or tumor antigens, which may be used, for example, for the treatment or prevention of infectious disease or cancer. The recombinant RhCMV or HCMV vectors elicit and maintain high level cellular immune responses specific for the heterologous antigen while including deletions in one or more genes essential or augmenting for CMV replication, dissemination or spread.

Complexes comprising HIV Tat and the V3 loop from gp120 Env provide novel epitopes and are immunogenic to prevent or inhibit infection by HIV.