A method for reducing heterogeneity of a virus preparation may include generating virus ions from the virus preparation, repeatedly increasing at least one of a temperature and an incubation period at the increased temperature of at least one of the virus preparation and the generated virus ions, measuring mass-to-charge ratios and charge magnitudes of at least some of the generated virus ions at each increase of the at least one of the temperature and the incubation period, determining a mass spectrum at each increase of the at least one of the temperature and the incubation period based on values of the respective mass-to-charge ratios and charge magnitudes, and determining, based on the mass spectrums, optimum ones of the temperature and the incubation period which together minimize, or at least reduce, a heterogeneity of the virus preparation without aggregation of virus capsids in the virus preparation.

The present disclosure provides compositions and methods of restoring or enhancing visual function in an individual by administering to the individual a pharmaceutical composition comprising a recombinant adeno-associated viral (rAAV) vector having a polynucleotide sequence that encodes a medium wavelength cone opsin (MW-opsin). The MW-opsin is expressed in a retinal cell in the individual, thereby restoring or enhancing visual function.

Provided herein is a dual vector transfection system for the production of recombinant adeno-associated virus (rAAV). The dual vector transfection system generally comprises: (1) a first nucleic acid vector comprising a first nucleotide sequence encoding an AAV Rep protein, a second nucleotide sequence comprising an rAAV genome comprising a transgene, and a third nucleotide sequence encoding an AAV capsid protein; and (2) a second nucleic acid vector comprising a helper virus gene.

The present disclosure provides compositions including recombinant nucleic acid constructs, vectors, and host cells, and methods of their use for reducing reverse packaging of cap and/or rep DMA sequences in the production of recombinant adeno-associated vims (rAAV). Also provided are pharmaceutical compositions comprising an rAAV produced from a composition or method of the invention and a pharmaceutically acceptable carrier or excipient. These pharmaceutical compositions may be useful in gene therapy for the prevention or treatment of a disease, condition, or disorder in a subject.

Provided herein are adenoviral vectors comprising nucleotide sequences encoding a Zika virus M and Env antigen, wherein the nucleotide sequence encoding the Zika virus M and Env antigen is operably linked to a cytomegalovirus (CMV) promoter comprising at least one tetracycline operator (TetO) motif. Also provided herein are pharmaceutical compositions comprising the adenoviral vectors, methods of producing the adenoviral vectors, methods of preventing Zika virus or the progression of Zika virus in a subject in need thereof, and kits comprising the adenoviral vectors and host cells.

In accordance with the invention, provided herein are methods for purifying recombinant adeno-associated (rAAV) vector particles.

Regimens useful in reducing the frequency of apheresis in a human patient having familial hypercholesterolemia are described. The method involves administering to the human subject via a peripheral vein by infusion of a suspension of replication deficient recombinant adeno-associated virus (rAAV).

The present invention relates to the production of plasmids which are useful in the production of Adeno-Associated Virus (AAV) particles. In particular, the invention provides nucleic acid molecules comprising capgenes and repgenes, wherein the capand repgenes are both operably-associated with the same promoter. The invention also provides host cells comprising nucleic acid molecules of the invention and methods for their use.

A recombinant adeno-associated virus (rAAV) comprising an AAV capsid and a vector genome comprising a frataxin gene is provided. Also provided is a composition containing an effective amount of rAAV to ameliorate symptoms of Freidreich’s ataxia, including, e.g., reduction in progression towards neurocognitive decline and/or cardiomyopathy.

Closed-ended, linear, duplex (CELID) DNA molecules, recombinant AAV (rAAV), particles comprising CELID DNA, methods of making such molecules and particles, and therapeutic applications of such particles.