Abstract: Aspects of the disclosure relate to compositions and methods for treating hereditary hearing loss and/or vision loss, for example, due to Usher syndrome, Type 3A. In some embodiments, the disclosure provides a recombinant adeno-associated virus comprising: (i) an AAV-S capsid protein, and (ii) an isolated nucleic acid comprising a transgene (e.g., a transgene for expressing a clarin-1 protein). The present disclosure also provides methods of treating hereditary hearing loss and/or vision loss (e.g., Usher Syndrome, Type 3A) using the same.

Abstract: Aspects of the disclosure relate to compositions and methods useful for treating hereditary hearing loss, for example, Usher syndrome type 3A or nonsyndromic hearing loss and deafness (DFNB1). In some embodiments, the disclosure provides isolated nucleic acids, vectors, and rAAV.9.PHP.B comprising a transgene encoding a Clarin-1 or a GJB2, and methods of treating hearing loss using the same.

Abstract: The present disclosure, at least in part, provides a dual-AAV vector system and compositions thereof for expression full-length PCDH15 in target cells. The present disclosure also provides the method of using the dual rAAV system for delivering full-length PCDH15 to a target cell (e.g., inner cells or cells in the eye) for treating deafness and/or blindness (e.g., Usher syndrome 1F).

Abstract: The present disclosure, at least in part, relates to compositions (e.g., isolated nucleic acid and rAAVs) and methods for treating Non-syndromic hearing loss and deafness (DFNB1) by delivering gap junction beta 2 (GJB2) protein to inner ear cells that normally express GJB2 (e.g., fibrocytes and supporting cells of the organ of Corti and nearby regions). The isolated nucleic acid of the present disclosure comprises an expression cassette, wherein the expression cassette comprises a gap junction beta 2 (GJB2) gene regulatory element (GRE) (e.g., GJB2 enhancers, GJB2 promoters, GJB2 5? UTR, and/or GJB2 3? UTR), and a nucleotide sequence encoding a GJB2 protein.

Abstract: Methods for introducing a gene into a cell of the inner ear, e.g., a cochlear or vestibular cell, e.g., a hair cell, e.g., for therapy, that include the use of exosomes associated with one or more adeno-associated viral (AAV) particles.

Abstract: Aspects of the disclosure relate to compositions, nucleic acids, vectors, viruses, and methods useful for treating hearing loss and/or blindness, for example, Usher Syndrome type IF. The present disclosure provides isolated nucleic acids, vectors, and rAAV.9.PHP.B comprising a transgene encoding a mini-PCDH15, and methods of treating hearing loss using the same. The present disclosure also provides a gRNA associated with a base editor to correct one or more mutations in PCDH15 for treating hearing loss and/or vision loss.

Abstract: Aspects of the disclosure relate to compositions and methods for treating hereditary hearing loss and/or vision loss, for example, due to Usher syndrome, Type 3A. In some embodiments, the disclosure provides a recombinant adeno-associated virus comprising: (i) an AAV-S capsid protein, and (ii) an isolated nucleic acid comprising a transgene (e.g., a transgene for expressing a clarin-1 protein). The present disclosure also provides methods of treating hereditary hearing loss and/or vision loss (e.g., Usher Syndrome, Type 3A) using the same.

Abstract: Aspects of the disclosure relate to compositions and methods useful for treating hereditary hearing loss, for example, Usher syndrome type 3A or nonsyndromic hearing loss and deafness (DFNB1). In some embodiments, the disclosure provides isolated nucleic acids, vectors, and rAAV.9.PHP.B comprising a transgene encoding a Clarin-1 or a GJB2, and methods of treating hearing loss using the same.

Abstract: Provided herein are novel compositions and methods related to bi-specific agents having high affinity and specificity for a target molecule.

Abstract: Methods for introducing a gene into a cell of the inner ear, e.g., a cochlear or vestibular cell, e.g., a hair cell, e.g., for therapy, that include the use of exosomes associated with one or more adeno-associated viral (AAV) particles.