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Lookup NU author(s): Dr Stephen Thompson,
Emeritus Professor Colin Self
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The construction and in vitro testing of a photo-activatable anti-tumour immuno-regulatory antibody is described. In this 'cloaked' folated anti-CD3 antibody conjugate, the folate portion of the conjugate is free to bind to folate receptor expressing cancer cells, whilst the anti-CD3 activity is effectively rendered inert by a coating of photo-labile 2-nitrobenzyl groups. On irradiation with UV-A light the activity of the anti-CD3 antibody is restored, not only when it is required, but more importantly, only where it is required. The conjugate can then attract killer T-cells to the surface of the tumour cells and kill them. Unirradiated normal tissues, to which the conjugate has been targeted by specific and non-specific binding, remain unharmed. We believe that these 'photo-switchable' conjugates could be used to markedly improve the targeting of the immune response to folate receptor (FR) expressing ovarian and breast cancers whilst minimising the side effects in the rest of the body. © 2007 Elsevier Inc. All rights reserved.
Author(s): Thompson S, Dessi J, Self CH
Publication type: Article
Publication status: Published
Journal: Biochemical and Biophysical Research Communications
ISSN (print): 0006-291X
ISSN (electronic): 1090-2104
Publisher: Academic Press
PubMed id: 18068664
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