Bioorthogonal approach to identify unsuspected drug targets in live cells

Abstract

A proteomics method to pull down secondary drug targets from live cells is described. The drug of interest is modified with trans-cyclooctene (TCO) and incubated with live cells. Upon cell lysis, the modified drug bound to the protein is pulled down using magnetic beads decorated with a cleavable tetrazine-modified linker. Samples are then run on an SDS-PAGE gel and isolated bands are submitted for mass spectrometry analysis to identify drug targets. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.