Abstract

Introduction Igeneon is currently testing a humanized monoclonal antibody specific for Lewis Y (IGN311) in clinical trials of passive cancer immunotherapy. The aim of the current study is to enhance the effector function of this antibody by genetically modifying the antibody producing cell line to express the glycosyl transferase GnTIII. The presence of this enzyme leads to glycosylation of the antibody with a bi-secting N-acetyl-glucosamine group and the absence of core fucosylation.

Highlights

  • H Loibner1Address: 1igeneon, Vienna, Austria and 2Glycart biotechnology AG, Zürich, Switzerland

  • Igeneon is currently testing a humanized monoclonal antibody specific for Lewis Y (IGN311) in clinical trials of passive cancer immunotherapy

  • Heavy and light chain genes of IGN311 were isolated, cloned into an expression vector and transfected transiently into EBNA cells: Genes for GnTIII tranferase expression were co-transfected resulting in a new expression product; an antibody, called IGN312, with modified N-glycosylation pattern

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Summary

H Loibner1

Address: 1igeneon, Vienna, Austria and 2Glycart biotechnology AG, Zürich, Switzerland. Published: 1 July 2004 Cancer Cell International 2004, 4(Suppl 1):S22 This article is available from: http://www.cancerci.com/content/4/S1/S22. Association for Immunotherapy of Cancer: Cancer Immunotherapy – 2nd Annual Meeting Meeting abstracts

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