Journal
METHODS
Volume 36, Issue 1, Pages 84-95Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ymeth.2005.01.008
Keywords
cancer therapy; CDR-grafting; Epratuzumab; immunoconjugates; Labetuzumab; monoclonal antibody
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Recent success in the development of monoclonal antibody-based anti-cancer drugs has largely benefitted from the advancements made in recombinant technologies and cell culture production. These reagents, derived from the antibodies of mouse origin, while maintaining the exquisite specificity and affinity to the tumor antigens, have low immunogenicity and toxicity in human. High-level expressing cell clones are generated and used to produce large quantities of the recombinant antibodies in bioreactors in order to meet the clinical demand for therapeutic applications. In this report, the systems and general methodologies developed by us to construct and produce humanized antibodies from the parent mouse antibodies are described. Once the humanized antibodies are available, they can be applied in three principal forms for cancer therapy: (1) naked antibodies, (2) drug- or toxin conjugates, and (3) radioconjugates. Using the humanized anti-CD22 (epratuzumab) and anti-carcinoembryonic antigen (ant-CEA; labetuzumab) antibody prototypes, clinical applications of naked and radiolabeled humanized monoclonal antibodies are described. (c) 2005 Elsevier Inc. All rights reserved.
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