Abstract: Methods for producing high titer recombinant adeno-associated virus (rAAV) using modified adenovirus-based helper nucleic acids are disclosed.

Abstract: Disclosed herein are codon-optimized nucleic acids encoding a Factor VIII polypeptide. Also disclosed are expression cassettes and expression vectors (e.g., recombinant AAV (rAAV) vectors) that contain the codon-optimized nucleic acids in expressible form. Methods for the treatment of Hemophilia A comprising administering expression vector comprising the codon-optimized nucleic acids (e.g., a recombinant AAV (rAAV) vector) are also disclosed.

Abstract: Disclosed herein is a method for the treatment of Pompe Disease comprising administering a recombinant AAV (rAAV) vector comprising a rAVV genome comprising a heterologous nucleic acid encoding a GAA signal peptide or portion thereof, a heterologous signal peptide, and an acid alpha-glucosidase (GAA) polypeptide, or N-terminal truncation thereof, where the heterologous nucleic acid is operatively linked to a liver-specific promoter, where the nucleic acid encoding GAA polypeptide can be wild type nucleic acid sequence, or modified nucleic acid sequence, or a codon optimized nucleic acid sequence, and can optionally be modified to reduce or completely eliminate CG and CpG dinucleotides and, optionally eliminated alternative reading frames (ARF) content.

Abstract: Aspects of the disclosure relate to compositions and methods useful for treating neurological diseases and disorders. In some embodiments, the disclosure provides a method for treating a neurological disease or disorder comprising administration of both a viral vector comprising interfering nucleic acids (e.g., artificial miRNAs) and a viral vector comprising a CYP46A1 protein. In some embodiments, the disclosure provides a method for treating Huntington's disease comprising administration of both a viral vector comprising interfering nucleic acids (e.g., artificial miRNAs) targeting the huntingtin gene (HTT) and a viral vector comprising a CYP46A1 protein. In some embodiments, the viral vector comprises a modified viral capsid, such as for preferentially targeting cells in the CNS or PNS.

Abstract: The present invention relates to a substantially homogenous population of a rational polyploid adeno-associated virus (AAV) virons that cross the blood brain barrier (BBB), where the rational polyploid comprises a VP3 viral structural protein from any AAV serotype that cross the BBB. In some embodiments, the rational polyploid crosses the BBB upon systemic or intrathecal administration to a subject. In some embodiments, a rational polyploid AAV virion comprises at least one VP1 and/or VP2 viral structural protein in addition to the VP3 protein. In some embodiments, the VP3 capsid protein is from a non-human primate, and in some embodiments the VP3 capsid protein is a AAV rhesus monkey serotype. In specific embodiments, rational polyploid AAV virion comprises a VP1 capsid protein from AAV8, and at least a VP3 capsid protein from any AAV serotype that cross the BBB.

Abstract: Disclosed herein are various optimized nucleic acids encoding the fukutin-related protein (FKRP). Recombinant vectors comprising the optimized nucleic acid (e.g. operatively linked to a muscle specific promoter), such as recombinant adeno-associated virus vectors, for expressing the protein (e.g. in skeletal and cardiac muscle), and therapeutic compositions contains the vectors are also disclosed. Therapeutic methods of administration of the vectors to a subject for the treatment of a subject with a dystroglycanopathy disorder (e.g., limb-girdle muscular dystrophy 2I) are also disclosed.

Abstract: Aspects of the disclosure relate to compositions and methods useful for treating neurological diseases and disorders. In some embodiments, the disclosure provides a method for treating a neurological disease or disorder comprising administration of both a viral vector comprising interfering nucleic acids (e.g., artificial miRNAs) and a viral vector comprising a CYP46A1 protein. In some embodiments, the disclosure provides a method for treating Huntington's disease comprising administration of both a viral vector comprising interfering nucleic acids (e.g., artificial miRNAs) targeting the huntingtin gene (HTT) and a viral vector comprising a CYP46A1 protein. In some embodiments, the viral vector comprises a modified viral capsid, such as for preferentially targeting cells in the CNS or PNS.

Abstract: The present invention provides a method of manufacturing vectors containing a heterologous gene-editing protein comprising providing (a) transforming a host system with a nucleic acid cassette containing a promoter operably linked to a gene encoding a gene-editing protein, wherein the host system also contains a heterologous inhibitor for the gene-editing protein, (b) incubating the host system for a time sufficient for vector production and to release the recombinant vector, and (c) recovering the recombinant vector. Also provided herein are cell lines for expressing vectors containing a gene-editing protein with an inhibitor of the gene-editing protein to prevent leaky expression of the gene-editing protein comprising constitutive expression of an inhibitor of a gene-editing protein.

Abstract: The present invention provides a method of manufacturing circular nucleic acid vectors containing a transgene comprising: (a) contacting a host system with a template, wherein the template comprises at least one flanking cleavage site(s), and (i) at least one phage origin of replication (ORI); (ii) at least one Terminal Repeat (TR), and; (iii) a promoter sequence operatively linked to a transgene; (b) incubating the host system for a time sufficient for replication to occur resulting in circular nucleic acid production; and (c) recovering the circular nucleic acid production, wherein the circular nucleic acid self-anneals.