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GTC Biotherapeutics, Inc.

Framingham, MA US

GTC Biotherapeutics, Inc. Patent applications
Patent application numberTitlePublished
20120058047METHOD OF USING AN ANTI-CD137 ANTIBODY AS AN AGENT FOR RADIOIMMUNOTHERAPY OR RADIOIMMUNODETECTION - The current invention relates to the development and methods of use of a recombinant agonistic antibody anti-human CD137, and glycosylation variants thereof. These antibodies act as anti-cancer agents and/or immune modulators that are effective in shrinking solid tumors or other cancerous indications and preventing their recurrence. The types of cancer for which the contemplated antibody is effective in treating also include leukemia and lymphoma. In a preferred embodiment the recombinant antibodies of the current invention were produced in and purified from the milk of transgenic animals. In another preferred embodiment of the current invention the agonistic anti-CD137 antibodies of the invention can be conjugated to radionuclides for radioimmunodetection or radioimmunotherapeutic purposes, or conjugated to a toxin for enhanced therapeutic treatment of various cancers.03-08-2012
20110104049METHOD OF USING AN ANTI-CD137 ANTIBODY AS AN AGENT FOR RADIOIMMUNOTHERAPY OR RADIOIMMUNODETECTION - The current invention relates to the development and methods of use of a recombinant agonistic antibody anti-human CD137, and glycosylation variants thereof. These antibodies act as anti-cancer agents and/or immune modulators that are effective in shrinking solid tumors or other cancerous indications and preventing their recurrence. The types of cancer for which the contemplated antibody is effective in treating also include leukemia and lymphoma. In a preferred embodiment the recombinant antibodies of the current invention were produced in and purified from the milk of transgenic animals. In another preferred embodiment of the current invention the agonistic anti-CD137 antibodies of the invention can be conjugated to radionuclides for radioimmunodetection or radioimmunotherapeutic purposes, or conjugated to a toxin for enhanced therapeutic treatment of various cancers.05-05-2011
20110082083FORMULATIONS OF LIQUID STABLE ANTITHROMBIN - In one aspect, the invention provides liquid stable formulations of antithrombin.04-07-2011
20100056757CLARIFICATION OF TRANSGENIC MILK USING DEPTH FILTRATION - Processes and apparati are provided for separating molecules of interest from a mixture by depth filtration (DF). The DF of the invention is useful in the clarification and processing of various feedstreams for the removal of a molecule of interest. According to a preferred embodiment, a transgenic milk feedstream is stabilized and particulate matter such as fat, casein miscelles and bacteria are removed. An aseptic filtration step was also developed to remove any bacteria remaining in a clarified transgenic milk feedstream.03-04-2010
20100021612METHOD FOR THE PRODUCTION OF FUSION PROTEINS IN TRANSGENIC MAMMAL MILK - Desirable fusion proteins can be produced in and purified from the milk of transgenic animals. The peptides are made as fusion proteins with a suitable fusion partner such as human alpha-fetoprotein. The fusion partner protein acts to promote and increase the half-life of the overall molecule as well as having therapeutic effects on its own. The fusion protein is typically produced through the use of transgenic animals and can be purified away from the now the milk or other bodily fluid of such an animal by an affinity purification method. A particular advantage of producing peptides via this route, in addition to the obvious advantages of high yield and biocompatibility, is that specific post-translational modifications, such as carboxy terminal amidation, can be performed in the mammary gland. Biologically active polypeptides comprising a therapeutically active polypeptide fused to human alpha-fetoprotein fragment or a variant thereof, methods for the preparation thereof, nucleotide sequences encoding such fusion polypeptides, expression cassettes comprising such nucleotide sequences, self-replicating plasmids containing such expression cassettes, and pharmaceutical compositions containing said fusion polypeptides.01-28-2010
20090246194ERYTHROPOIETIN ANALOG-IgG FUSION PROTEINS - Erythropoietin analog-human IgG fusion protein (EPOa-IgG) fusion protein and methods of making and using the fusion protein.10-01-2009

Patent applications by GTC Biotherapeutics, Inc.