The disclosure relates, in some aspects, to compositions and methods for treatment of diseases associated with aberrant lysosomal function, for example Parkinson's disease (PD) and Gaucher disease. In some embodiments, the disclosure provides expression constructs comprising a transgene encoding beta-Glucocerebrosidase (GBA) or a portion thereof alone or in combination with one or more PD-associated genes. In some embodiments, the disclosure provides methods of Parkinson's disease by administering such expression constructs to a subject in need thereof.

The present disclosure relates to viral particles for use in treating tauopathies, particularly Alzheimer's disease, by gene therapy. More specifically, the present invention relates to a viral particle for use in treating tauopathies by gene therapy in a subject in need thereof, said viral particle comprising a nucleic acid construct including a transgene encoding a glucocerebro sidase.

The disclosure relates, in some aspects, to compositions and methods for treatment of diseases associated with aberrant lysosomal function, for example Parkinson's disease (PD) and Gaucher disease. In some embodiments, the disclosure provides expression constructs comprising a transgene encoding beta-Glucocerebrosidase (GBA) or a portion thereof alone or in combination with one or more PD-associated genes. In some embodiments, the disclosure provides methods of Parkinson's disease by administering such expression constructs to a subject in need thereof.

The disclosure relates, in some aspects, to compositions and methods for treatment of diseases associated with aberrant lysosomal function, for example Parkinson's disease (PD) and Gaucher disease. In some embodiments, the disclosure provides expression constructs comprising a transgene encoding beta-Glucocerebrosidase (GBA) or a portion thereof alone or in combination with one or more PD-associated genes. In some embodiments, the disclosure provides methods of Parkinson's disease by administering such expression constructs to a subject in need thereof.

The present invention provides, among other things, compositions and methods for CNS delivery of lysosomal enzymes for effective treatment of lysosomal storage diseases. In some embodiments, the present invention includes a stable formulation for direct CNS intrathecal administration comprising an iduronate-2-sulfatase (I2S) protein, salt, and a polysorbate surfactant for the treatment of Hunters Syndrome.

The disclosure relates, in some aspects, to compositions and methods for treatment of diseases associated with aberrant lysosomal function, for example Parkinson's disease and Gaucher disease. In some embodiments, the disclosure provides expression constructs comprising a transgene encoding one or more inhibitory nucleic acids targeting SCNA or a portion thereof, TMEM106B or a portion thereof, or any combination of the foregoing. In some embodiments, the disclosure provides methods of Parkinson's disease by administering such expression constructs to a subject in need thereof.

The disclosure relates, in some aspects, to compositions and methods for treatment of diseases associated with aberrant lysosomal function, for example Parkinson's disease and Gaucher disease. In some embodiments, the disclosure provides expression constructs comprising a transgene encoding beta-Glucocerebrosidase (GBA) or a portion thereof, Lysosomal Membrane Protein 2 (LIMP2), Prosaposin, or any combination of the foregoing. In some embodiments, the disclosure provides methods of Parkinson's disease by administering such expression constructs to a subject in need thereof.

The invention provides a composition of glucocerebrosidase, such as velaglucerase alfa, and isofagomine, in a molar ratio of at least about 1:2.5. Also provided is a use of the composition for treatment of a disorder related to a dysfunction in a GCase pathway. The disorder could be a lysosomal storage disease, such as Gaucher disease, Fabry disease, Pompe disease, a mucopolysaccharidoses, or multiple system atrophy. The disorder could also be a neurodegenerative disorder, such as Parkinson disease, Alzheimer's disease, or Lewy body dementia. The composition can have 0.5 to 5.0 mg/kg of glucocerebrosidase and isofagomine in at least about a 3-fold molar excess to the glucocerebrosidase. The composition can be administered intravenously or subcutaneously.

The present invention provides an effective and less invasive approach for direct delivery of therapeutic agents to the central nervous system (CNS). In some embodiments, the present invention provides methods including a step of administering intrathecally to a subject suffering from or susceptible to a lysosomal storage disease associated with reduced level or activity of a lysosomal enzyme, a composition comprising a replacement enzyme for the lysosomal enzyme.

The present disclosure relates to viral particles for use in treating synucleinopathies, particularly sporadic Parkinson Diseases by gene therapy. More specifically, the present invention relates to a viral particle for use in treating synucleinopathy by gene therapy in a subject in need thereof, said viral particle comprising a nucleic acid construct including a transgene encoding a glucocerebrosidase.