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

Abstract: Disclosed herein are methods and kits which are useful for detecting presence of an enzyme and the relative amount of glycan associated with the enzyme in a test sample based upon the enzyme's ability to competitively inhibit the binding of a ligand in such test sample. The present invention provides the ability to evaluate cell culture conditions and optimize the desired glycoform content of recombinantly prepared enzymes.

Abstract: Methods of producing arylsulfatase A are described herein. The methods can include one or more steps of chromatography. Exemplary chromatographic steps include ion exchange chromatography, mixed mode chromatography, and hydrophobic interaction chromatography. Compositions containing and methods using arylsulfatase A produced by the methods described herein are also disclosed.

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: Disclosed herein are methods and kits which are useful for detecting presence of an enzyme in a test sample based upon the intrinsic enzymatic activity of such test sample. The present invention provides the ability to evaluate cell culture conditions and optimize the desired glycoform content of recombinantly prepared enzymes.

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

Abstract: Methods and kits for determining the presence in a patient biological sample of an antibody which binds to an agent (e.g., an enzyme administered in the course of ERT), and optionally determining the neutralizing effect or lack thereof of the antibody on the agent are disclosed.

Abstract: The invention relates, in part, to improved methods of administering ?-galactosidase A for the treatment of ?-galactosidase A deficiencies including Fabry disease.

Abstract: The present invention discloses compositions, methods, assays and kits which provide for rapid, high-throughput and sensitive assays useful for detecting the activity of galactocerebrosidase (GALC) in a test sample. The methods, assays and kits of the present invention provide useful diagnostic tools which may be used to identify subjects suspected of having an enzyme deficiency and to evaluate the efficacy of enzyme replacement therapy.

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 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.

Abstract: Disclosed herein are compositions and methods of modulating the expression of gene or the production of a protein by transfecting target cells with nucleic acids. The compositions disclosed herein demonstrate a high transfection efficacy and are capable of ameliorating diseases associated with protein or enzyme deficiencies.

Abstract: Described herein are isolated nucleic acid molecules comprising nucleotide sequence encoding mannose receptor, C type 1 (MRC1) wherein the 5? region of the nucleotide sequence encoding MRC1 is codon optimized; cells comprising such nucleic acid molecules; and methods of detecting antibody production, e.g., neutralizing antibody production, in a subject being treated for Gaucher disease using such cells.

Abstract: Disclosed herein are novel methods, assays and kits useful for the diagnosis and monitoring of subjects with mucopolysaccharidoses (MPS), The methods, assays and kits are particularly useful for detecting the presence of one or more glycosaminoglycans which correlate to MPS and its severity in a variety of biological samples.

Abstract: This invention relates to methods and compositions for the diagnosis and treatment of Multiple Sulfatase Deficiency (MSD) as well as other sulfatase deficiencies. More specifically, the invention relates to isolated molecules that modulate post-translational modifications on sulfatases. Such modifications are essential for proper sulfatase function.

Abstract: A system for managing treatment of an orphan disease of a patient by a user includes a mobile device and a program stored thereon. The mobile device is constructed and adapted to communicate with at least one server. The program stores one or more parameters related to the treatment of the orphan disease, tracks the parameters, and communicates information related to the treatment of the orphan disease with a health care provider, a company, and/or a case manager.

Abstract: The present invention provides biomarkers for efficient and accurate characterization of Sanfilippo syndrome. In particular, the present invention provides biomarkers differentially expressed in Sanfilippo syndrome. Those biomarkers, used alone or in combination, may permit more accurate robust characterization of Sanfilippo syndrome, resulting in more precise determination of the types and/or severity of the syndrome. In addition, inventive biomarkers according to the present invention can be used to effective monitor treatment response in Sanfilippo syndrome patients and/or to optimize treatment for Sanfilippo syndrome.