Abstract: The present invention provides, among other things, methods and compositions for treating muscular dystrophy, in particular, Duchenne muscular dystrophy (DMD). In some embodiments, a method according to the present invention includes administering to an individual who is suffering from or susceptible to DMD an effective amount of an anti-Flt-1 antibody, or antigen binding fragment thereof, such that at least one symptom or feature of DMD is reduced in intensity, severity, or frequency, or has delayed onset.

Abstract: The present invention provides, among other things, methods and compositions for treating muscular dystrophy, in particular, Duchenne muscular dystrophy (DMD). In some embodiments, a method according to the present invention includes administering to an individual who is suffering from or susceptible to DMD an effective amount of a recombinant follistatin protein such that at least one symptom or feature of DMD is reduced in intensity, severity, or frequency, or has delayed onset.

Abstract: Compositions of proteins having free thiols, and methods of making and using such compositions, are described.

Abstract: Disclosed herein are novel peptide linkers and polypeptide compositions comprising the linkers (e.g., chimeric polypeptides) and methods of using the polypeptide compositions. The compositions and methods are particularly useful for targeting/delivering a polypeptide or protein of interest (e.g., a therapeutic polypeptide) to a cell, tissue or organ of interest in order to treat various diseases or disorders (e.g., lysosomal storage disorders).

Abstract: The present invention provides, among other things, compositions and methods for treatment of Friedrich's Ataxia based on effective targeting of a therapeutic moiety to mitochondria that can substitute for natural FXN protein activity or rescue one or more phenotypes or symptoms associated with frataxin-deficiency. In some embodiments, the present invention provides a targeted therapeutic comprising a therapeutic moiety, which is a polypeptide having an N-terminus and a C-terminus, a mitochondrial targeting sequence associated with the therapeutic moiety at the N-terminus, and a mitochondrial membrane-penetrating peptide associated with the therapeutic moiety at the C-terminus, wherein the therapeutic moiety is targeted to mitochondria upon cellular entry.

Abstract: The present invention provides, among other things, methods and compositions for determining enzyme kinetic parameters (e.g., Vmax, Km, and specific activity, etc.) indicative of clinically relevant properties of glucocerebrosidase using a physiologically relevant substrate, in particular, a substrate that is representative of substrates that typically accumulate in patients suffering from Gaucher disease such as glucosylceramide. Thus, the present invention is particularly useful to measure a kinetic parameter relating to the activity of glucocerebrosidase in a drug substance, drug product, and stability sample for enzyme replacement therapy.

Abstract: Among other things, the present invention provides methods and compositions of treating Sanfilippo syndrome type B (Sanfilippo B) by, e.g., intrathecal (IT) administration of a Naglu protein. A suitable Naglu protein can be a recombinant, gene-activated or natural protein. In some embodiments, a suitable Naglu protein is a recombinant Naglu protein. In some embodiments, a recombinant Naglu protein is a fusion protein containing a Naglu domain and a lysosomal targeting moiety. In some embodiments, the lysosomal targeting domain is an IGF-II moiety.

Abstract: 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 arylsulfatase A (ASA) protein, salt, and a polysorbate surfactant for the treatment of Metachromatic Leukodystrophy Disease.

Abstract: The invention provides methods of treating ?-galactosidase A deficiency. Dosage forms, methods of administration, and methods of analyzing human ?-galactosidase A are also included.

Abstract: The present invention provides, among other things, methods and compositions for production of recombinant I2S protein with improved potency and activity using cells co-express I2S and FGE protein. In some embodiments, cells according to the present invention are engineered to simultaneously over-express recombinant I2S and FGE proteins. Cells according to the invention are adaptable to various cell culture conditions. In some embodiments, cells of the present invention adaptable to a large-scale suspension serum-free culture.

Abstract: The present invention provides the three-dimensional structure of human ?-N-acetylglucosaminidase (NAGLU) protein. This crystallographic information is useful in the identification and development of novel binding compounds of NAGLU, NAGLU mutants, for example, those associated with Sanfilippo syndrome type B (mucopolysaccharidosis III B (MPS III-B)), and other NAGLU family members (family 89 ?-N-acetylglucosaminidase) which may modulate the activity and/or stability of mutated NAGLU. Such compounds may be useful for the treatment of Sanfilippo syndrome type B (mucopolysaccharidosis III B (MPS III-B)).

Abstract: Compositions of proteins having free thiols, and methods of making and using such compositions, are described.

Abstract: The present invention provides a method of treating cognitive impairment of Hunter syndrome. Among other things, the present invention provides a method comprising a step of administering intrathecally to a subject in need of treatment a recombinant iduronate-2-sulfatase (I2S) enzyme at a therapeutically effective dose and an administration interval for a treatment period sufficient to improve, stabilize or reduce declining of one or more cognitive, adaptive, motor, and/or executive functions relative to a control.

Abstract: Disclosed are methods of making collagen 7, or functional fragments thereof, as well as collagen 7, and functional fragments thereof produced by such methods, nucleic acids encoding collagen 7, and functional fragments thereof, as well as vectors and host cells comprising such nucleic acids.

Abstract: The present invention provides, among other things, methods of delivering mRNA in vivo, including administering to a subject in need of delivery a composition comprising an mRNA encoding a protein, encapsulated within a liposome such that the administering of the composition results in the expression of the protein encoded by the mRNA in vivo, wherein the liposome comprises a cationic lipid of formula I-c: or a pharmaceutically acceptable salt thereof.

Abstract: Methods and compositions for treating Gaucher disease are described.

Abstract: The present invention provides, among other things, compositions, kits and methods for subcutaneous delivery of lysosomal enzymes for effective treatment of lysosomal storage diseases. In some embodiments, the present invention provides methods for treating Hunter syndrome by subcutaneous administration of a replacement iduronate-2-sulfatase (I2S) protein. In some embodiments, the present invention provides a kit comprising an arrangement of components for subcutaneously administering iduronate-2-sulfatase (I2S) protein.

Abstract: A lipoprotein lipase (LPL) protein for treating and/or preventing HTG and its associated diseases, including but not limited to acute pancreatitis (AP), and in particular, acute pancreatitis secondary to or exacerbated by hypertriglyceridemia, and hypertriglyceridemia and its associated diseases in general, including cardiovascular and metabolic diseases, endocrine disorders, and fat embolism syndrome.

Abstract: Disclosed herein are compositions and methods for modulating the production of a protein in a target cell. The compositions and methods disclosed herein are capable of ameliorating diseases associated with protein or enzyme deficiencies.

Abstract: The present invention provides, among other things, oligonucleotide modulators of human 5?-HT2C receptor (HTR2C) and improved methods and composition for treating HTR2C-related diseases, disorders or conditions based on such modulators. In particular, oligonucleotides modulators according to the invention target specific regions in the Exon V/Intron V junction of the human HTR2C pre-mRNA and drive expression of HTR2C Vb splice isoform, leading to increased generation of non-edited strong HTR2C receptor and enhanced serotonin receptor activity.