Entity

Time filter

Source Type

BOULDER, CO, United States

Patent
Bolder Biotechnology, Inc. | Date: 2010-09-29

The present invention relates to novel methods for making and refolding insoluble or aggregated proteins having free cysteines in which a host cell expressing the protein is exposed to a cysteine blocking agent. The soluble, refolded proteins produced by the novel methods can then be modified to increase their effectiveness. Such modifications include attaching a PEG moiety to form PEGylated proteins.


Patent
Bolder Biotechnology, Inc. | Date: 2013-11-25

Disclosed is a method for refolding a protein or peptide that does not contain essential disulfides and that contains at least one free cysteine residue. Also disclosed are polymer IFN- conjugates that have been created by the chemical coupling of polymers such as polyethylene glycol moieties to IFN-, particularly via a free cysteine in the protein. Also disclosed are analogs of bioactive peptides that may be used to create longer acting versions of the peptides, including analogs of glucagon, glucagon-like peptide-1 (GLP-1), GLP-2, Gastric inhibitory peptide (GIP), PYY, exendin, ghrelin, gastrin, amylin, and oxyntomodulin.


Patent
Bolder Biotechnology, Inc. | Date: 2010-05-10

The present invention relates to novel methods for making fusion proteins comprising a cytokine or growth factor fused to an immunoglobulin domain. The growth factor/cytokine can be fused directly to an immunoglobulin domain or through a peptide linker. The purified growth factor/cytokine-IgG fusion proteins produced by the novel methods are biologically active and can be used to treat diseases for which the non-fused growth factor/cytokine are useful.


Patent
Bolder Biotechnology, Inc. | Date: 2010-09-21

The growth hormone supergene family comprises greater than 20 structurally related cytokines and growth factors. A general method is provided for creating site-specific, biologically active conjugates of these proteins. The method involves adding cysteine residues to non-essential regions of the proteins or substituting cysteine residues for non-essential amino acids in the proteins using site-directed mutagenesis and then covalently coupling a cysteine-reactive polymer or other type of cysteine-reactive moiety to the proteins via the added cysteine residue. Disclosed herein are preferred sites for adding cysteine residues or introducing cysteine substitutions into the proteins, and the proteins and protein derivatives produced thereby. Also disclosed are therapeutic methods for using the cysteine variants of the invention.


Patent
Bolder Biotechnology, Inc. | Date: 2013-05-03

The growth hormone supergene family comprises greater than 20 structurally related cytokines and growth factors. A general method is provided for creating site-specific, biologically active conjugates of these proteins. The method involves adding cysteine residues to non-essential regions of the proteins or substituting cysteine residues for non-essential amino acids in the proteins using site-directed mutagenesis and then covalently coupling a cysteine-reactive polymer or other type of cysteine-reactive moiety to the proteins via the added cysteine residue. Disclosed herein are preferred sites for adding cysteine residues or introducing cysteine substitutions into the proteins, and the proteins and protein derivatives produced thereby. Also disclosed are therapeutic methods for using the cysteine variants of the invention.

Discover hidden collaborations