The present invention relates to synthetic retinal ON-bipolar cell-specific promoter sequences and their use in therapeutic transgene delivery to the eye for the improvement and/or restoration of vision. The invention features metabotropic glutamate receptor 6 (mGluR6) promoters for an increased and more specific expression in ON-bipolar cells, in particular in cone ON-bipolar cells of the human macula.

The present invention relates to transcription regulatory elements (TREs) such as promoters, which may be used to express a transgene within a cell such as a mammalian cell. The invention further relates to polynucleotides and vectors comprising such transcription regulatory elements, which may be operably linked to a transgene, as well as methods of gene therapy based on using such vectors.

The present disclosure relates to compositions and methods useful for treating glycogen storage disorders, such as type II glycogen storage disorder, also referred to herein as Pompe disease. Using the compositions and methods of the disclosure, a patient (e.g., a mammalian patient, such as a human patient) having Pompe disease may be administered a viral vector, such as an adeno-associated viral (AAV) vector, that contains a transgene encoding acid alpha-glucosidase.

The present disclosure relates to methods of targeting specific cell types within the cochlea using optimized gene therapy vectors. In particular, the disclosure provides gene therapy vectors to specifically target cochlear cells and methods of treating hearing impairment and hearing-loss related disorders.

The present invention provides compositions comprising phase separated nanoparticles, as well as methods of making the nanoparticles and uses thereof. The nanoparticles can be conjugated to therapeutics and used to treat diseases or to screen compounds.

The present disclosure relates to methods and compositions comprising derivatized-chitosan polyplexes reversibly coated with a polyanion-containing block co-polymer for the localized expression of IL-12 in mucosal tissues, preferably in combination with an IFN-1 activator/inducer, for use in cancer immunotherapy.

Provided herein are combination therapies involving co-expression of an E2 subunit of a branched-chain alpha-keto acid dehydrogenase (BCKDH) from a skeletal muscle-targeted rAAV.hDBT vector and a liver-targeted rAAV.hDBT vector. Also provided herein are combination therapies wherein an E1a and/or an E1b subunit of the BCKDH complex is expressed from muscle and/or liver following rAAV-mediated delivery targeted to these tissues. Further provided is a pharmaceutical composition comprising a rAAV as described herein in a formulation buffer, and a method of treating a human subject diagnosed with MSUD.

Methods and constructs for engineering circular RNA are disclosed. In some embodiments, the methods and constructs comprise a vector for making circular RNA, the vector comprising the following elements operably connected to each other and arranged in the following sequence: a.) a 5′ homology arm, b.) a 3′ group I intron fragment containing a 3′ splice site dinucleotide, c.) optionally, a 5′ spacer sequence, d.) a protein coding or noncoding region, e.) optionally, a 3′ spacer sequence, f) a 5′ Group I intron fragment containing a 5′ splice site dinucleotide, and g.) a 3′ homology arm, the vector allowing production of a circular RNA that is translatable or biologically active inside eukaryotic cells. Methods for purifying the circular RNA produced by the vector and the use of nucleoside modifications in circular RNA produced by the vector are also disclosed.

The present disclosure relates to polynucleotides comprising an open reading frame of linked nucleosides encoding human interleukin-12 (IL12), functional fragments thereof, and fusion proteins comprising IL12. In some embodiments, the open reading frame is sequence-optimized. In particular embodiments, the disclosure provides sequence-optimized polynucleotides comprising nucleotides encoding the polypeptide sequence of human IL12, or sequences having high sequence identity with those sequence optimized polynucleotides.

The present invention features compositions and methods for editing deleterious mutations associated with alpha-1 anti-trypsin (A1AT) deficiency. In particular embodiments, the invention provides methods for correcting mutations in an A1AT polynucleotide using an adenosine deaminase base editor, ABE8, having unprecedented levels of efficiency.