Abstract: Compositions and methods for folding proteins belonging to the transforming growth factor beta superfamily are disclosed. The compositions and methods allow for the folding of such proteins when produced in an expression system that does not yield a properly folded, biologically active product.

Abstract: Cell adhesion inhibitors can interact with VLA-4 molecules and inhibits VLA-4 dependent cell adhesion. An inhibitor including a polyethylene glycol moiety can have advantageous pharmaceutical properties.

Abstract: The invention provides Sp35 polypeptides and fusion proteins thereof, Sp35 antibodies and antigen-binding fragments thereof and nucleic acids encoding the same. The invention also provides compositions comprising, and methods for making and using, such Sp35 antibodies, antigen-binding fragments thereof, Sp35 polypeptides and fusion proteins thereof.

Abstract: Cell adhesion inhibitors can interact with VLA-4 molecules and inhibits VLA-4 dependent cell adhesion. An inhibitor including a polyethylene glycol moiety can have advantageous pharmaceutical properties.

Abstract: The invention provides methods of treating diseases, disorsers or injuries involving demyelination and dysmyelination, including multiple sclerosis, by the administration of an Sp35 antagonist.

Abstract: Disclosed are immunogenic Nogo receptor-1 polypeptides, Nogo receptor-1 antibodies, antigen-binding fragments thereof, soluble Nogo receptors and fusion proteins thereof and nucleic acids encoding the same. Also disclosed are compositions comprising, and methods for making and using, such Nogo receptor antibodies, antigen-binding fragments thereof, soluble Nogo receptors and fusion proteins thereof and nucleic acids encoding the same.

Abstract: A dimer comprising a mutated neublastin polypeptide coupled to a polymer is disclosed. Such dimers exhibit prolonged bioavailability and, in preferred embodiments, prolonged biological activity relative to wild-type forms of neublastin.

Abstract: Hydrophobically-modified proteins and methods of making them are described. A hydrophobic moiety is attached to a surface amino acid residue of the protein. The hydrophobic moiety can be a lipid or a peptide. Alternatively, the protein can be derivatized by a wide variety of chemical reactions that append a hydrophobic structure to the protein. The preferred protein is of mammalian origin and is selected from the group consisting of Sonic, Indian, and Desert hedgehog. The hydrophobic moiety is used as a convenient tether to which may be attached a vesicle such as a cell membrane, liposome, or micelle.

Abstract: The invention relates to novel polyalkylene glycol compounds and methods of using them. In particular, compounds comprising a novel polyethylene glycol conjugate are used alone, or in combination with antiviral agents to treat a viral infection, such as chronic hepatitis C.