Patent Number: 7,825,223

Title: Methods of purifying anti A .beta. antibodies

Abstract: The present application provides methods of purifying A.beta. binding proteins having a Fc region, for example, anti-A.beta. antibodies or antibody fusions, by adsorbing the A.beta. binding protein to a Fc binding agent, such as, for example, Protein A or Protein G, followed by a wash with a divalent cation salt buffer to remove impurities and subsequent recovery of the adsorbed A.beta. binding protein. The present application also features methods of eluting the purified A.beta. binding protein as well as the incorporation of the methods within a purification train. Kits comprising components for carrying out the methods and instructions for use are also provided.

Inventors: Godavarti; Ranganathan (Burlington, MA), Iskra; Timothy (Derry, NH)

Assignee: Janssen Alzheimer Immunotherapy

International Classification: C07K 16/18 (20060101); C07K 1/22 (20060101)

Expiration Date: 2019-11-02 0:00:00