Proteomic identification of secreted proteins as surrogate markers for signal transduction inhibitor activity

Journal article


McClelland, C. and Gullick, W. 2007. Proteomic identification of secreted proteins as surrogate markers for signal transduction inhibitor activity. British Journal of Cancer. 96 (2), pp. 284-289. https://doi.org/10.1038/sj.bjc.6603544
AuthorsMcClelland, C. and Gullick, W.
Abstract

Epidermal growth factor receptor is a potential target for cancer treatment and new small-molecule tyrosine kinase inhibitor drugs have been designed to inhibit its activity. In this work we identify potential surrogate markers of drug activity using a proteomic analysis. Two-dimensional electrophoresis was optimised to compare expression patterns of proteins secreted from the cancer cell lines A431 and A549 treated with Gefitinib (Iressa) vs untreated or vehicle-only-treated samples. Upregulated or downregulated proteins were detected using Phoretix 2D image analysis software. Several proteins were then identified using matrix-assisted laser desorption/ionization-time of flight (MALDI-TOF) mass spectrometry. In one case, upregulation of Protein Disulphide Isomerase in response to Gefitinib was confirmed by Western blot analysis, and the response was shown to be concentration dependent. The identification of surrogate markers may be of use for the evaluation of new drugs, in preclinical models, in clinical trials and in the therapy of individual patients to give optimal biological drug doses.

Year2007
JournalBritish Journal of Cancer
Journal citation96 (2), pp. 284-289
PublisherNature Publishing Group
ISSN0007-0920
Digital Object Identifier (DOI)https://doi.org/10.1038/sj.bjc.6603544
Publication dates
Print29 Jan 2007
Publication process dates
Deposited15 Jul 2015
Accepted2007
Output statusPublished
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