Method of manufacturing VEGF antagonist fusion proteins

• US 10,406,226 B2
• Filed: 08/31/2017
• Issued: 09/10/2019
• Est. Priority Date: 03/25/2005
• Status: Active Grant

• Current Assignee: Regeneron Pharmaceuticals Incorporated
• Original Assignee: Regeneron Pharmaceuticals Incorporated
• Inventors: Dix, Daniel B., Frye, Kelly, Kautz, Susan
• Primary Examiner(s): Stoica, Elly-Gerald
• Application Number:
  US15/692,893
• Publication Number:
  US 20170360930A1
• Time in Patent Office: 740 Days
• Field of Search: None
• CPC Class Codes: A61K 31/4172 Imidazole-alkanecarboxylic acids, e.g. histidine
• CPC Class Codes: A61K 31/7012 Compounds having a free or esterified carboxyl group attached, directly or through a carbon chain, to a carbon atom of the saccharide radical, e.g. glucuronic acid, neuraminic acid gluconic acid A61K31/191; ascorbic acid A61K31/375
• CPC Class Codes: A61K 38/16 Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof enzyme inhibitors A61K38/005
• CPC Class Codes: A61K 38/179 for growth factors; for growth regulators
• CPC Class Codes: A61K 39/39591 Stabilisation, fragmentation
• CPC Class Codes: A61K 47/02 Inorganic compounds
• CPC Class Codes: A61K 47/10 Alcohols; Phenols; Salts thereof, e.g. glycerol; Polyethylene glycols [PEG]; Poloxamers; PEG/POE alkyl ethers
• CPC Class Codes: A61K 47/12 Carboxylic acids; Salts or anhydrides thereof
• CPC Class Codes: A61K 47/183 Amino acids, e.g. glycine, EDTA or aspartame
• CPC Class Codes: A61K 47/22 Heterocyclic compounds, e.g. ascorbic acid, tocopherol or pyrrolidones
• CPC Class Codes: A61K 47/26 Carbohydrates, e.g. sugar alcohols, amino sugars, nucleic acids, mono-, di- or oligo-saccharides; Derivatives thereof, e.g. polysorbates, sorbitan fatty acid esters or glycyrrhizin
• CPC Class Codes: A61K 9/0019 Injectable compositions; Intramuscular, intravenous, arterial, subcutaneous administration; Compositions to be administered through the skin in an invasive manner non-active ingredients are additionally classified in A61K47/00
• CPC Class Codes: A61K 9/08 Solutions composition of solutions A61K47/00
• CPC Class Codes: A61K 9/19 lyophilised , i.e. freeze-dried, solutions or dispersions lyophilised products with subsequent particle size reduction A61K9/14; granules or pellets made by lyphilisation A61K9/1682; solid oral dosage forms made by lyophilisation A61K9/2095; lyophilisation additives A61K47/00
• CPC Class Codes: A61P 35/00 Antineoplastic agents
• CPC Class Codes: A61P 43/00 Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
• CPC Class Codes: A61P 7/00 Drugs for disorders of the blood or the extracellular fluid
• CPC Class Codes: A61P 9/00 Drugs for disorders of the cardiovascular system
• CPC Class Codes: C07K 14/71 for growth factors; for growth regulators
• CPC Class Codes: C07K 16/22 against growth factors ; against growth regulators
• CPC Class Codes: C07K 2318/20 : Antigen-binding scaffold molecules wherein the scaffold is not an immunoglobulin variable region or antibody mimetics
• CPC Class Codes: C07K 2319/30 : Non-immunoglobulin-derived peptide or protein having an immunoglobulin constant or Fc region, or a fragment thereof, attached thereto
• CPC Class Codes: Y02A 50/30 : Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change

Abstract

Formulations of a vascular endothelial growth factor (VEGF)-specific fusion protein antagonist are provided including a pre-lyophilized formulation, a reconstituted lyophilized formulation, and a stable liquid formulation. Preferably, the fusion protein has the sequence of SEQ ID NO:4.

Claims

1. A method of manufacturing a VEGF antagonist fusion protein, said method comprising:

a. expressing said VEGF antagonist fusion protein in a Chinese hamster ovary (CHO) cell comprising a polynucleotide encoding the VEGF antagonist fusion protein which comprises amino acids 27-457 of SEQ ID NO;

2 wherein said fusion protein binds vascular endothelial growth factor (VEGF); and

b. purifying said VEGF antagonist fusion proteins;

wherein at least 90% of the weight of the purified fusion protein is not present as an aggregate.

2. The method of claim 1, wherein said fusion protein is purified until substantially free of protein contaminants.

4. The method of claim 1, wherein said VEGF antagonist fusion protein is post transitionally glycosylated at one or more asparagine residues.

3. A method of manufacturing a VEGF antagonist fusion protein, said method comprising:

a. expressing said VEGF antagonist fusion protein in a Chinese hamster ovary (CHO) cell comprising a polynucleotide encoding the VEGF antagonist fusion protein which comprises amino acids 27-457 of SEQ ID NO;

4 wherein said fusion protein binds vascular endothelial growth factor (VEGF); and

b. purifying said VEGF antagonist fusion protein;

wherein at least 90% of the weight of the purified fusion protein is not present as an aggregate.