A process for producing blood coagulation factor VII in 3 human cell lines (HepG2, Sk-Hep, HKB-11) and to select the best recombinant protein producer. The murine line BHK-21 was used as control. The data allow to assert that the system used to modify cell lines was efficient, so that all the cells were satisfactorily modified, and produced the protein of interest of stable form. In addition, when comparing the murine line BHK-21 with the human cells (HepG2, Sk-Hep-1 and HKB-11), the latter showed to be able to produce rFVII more efficiently, which allows to conclude that human cell lines are a great alternative for the production of recombinant blood coagulation factors.

A synthetic lentiviral vector construct comprises a genomic RNA packaging enhancer (GRPE) element and lentiviral nucleic acid sequences sufficient for reverse transcription and packaging in a host cell.

Lentiviral vectors comprising a nucleic acid sequence encoding human IL-7R, for producing IL-7R and treating IL-7R deficiency are disclosed. Compositions, viral particles, and cells comprising the vector are further disclosed. Methods for use of these vectors or cells comprising these vectors for treating an IL-7R deficiency, such as severe combined immunodeficiency, are also provided.

The present embodiments provide methods and compositions for pseudotyping viral vectors. Also provided are methods and compositions for creating targeting moiety fused viral glycoproteins. Also provided herein are methods of treating a disease in a subject in need thereof using the compositions provided for herein. Also provided are methods of delivering a molecule of interest to a target cell using the compositions provided for herein.

The present invention provides compositions and methods for transducing cells (e.g. T cells or immune cells). Also provided herein are methods of treating a disease in a subject in need thereof.

Novel lentivirus packaging systems engineered with a synthetic gene network having a positive feedback loop to amplify the expression of virus genes are provided. When co-transfected into a host cell with a transfer plasmid and envelope vector, extremely high viral titers are achieved when compared to transfection of a host cell with conventional third generation packaging systems. Methods for enhancing production of lentivirus, compositions comprising high titer lentivirus, and therapeutic methods based on delivery of lentiviral nucleic acid to target cells are also provided.

Provided herein are methods for enhancing the transduction efficiency of vectors into cells, e.g., primary human T lymphocytes.

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.

The present invention relates to compositions and methods for activating expression from the paternally-inherited allele of UBE3A in human Angelman's Syndrome neurons using viral vector delivery of short hairpin RNAs, ribozymes, and/or microRNAs.

The present invention relates to compositions and methods for activating expression from the paternally-inherited allele of UBE3A in human Angelman's Syndrome neurons using viral vector delivery of short hairpin RNAs, ribozymes, and/or microRNAs.