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Updated: May 8, 2026

Bioorthogonal Chemical Imaging of Cell Metabolism Regulated by Aromatic Amino Acids
Published on: May 12, 2023
Bioorthogonal approach to identify unsuspected drug targets in live cells
Katherine S Yang1, Ghyslain Budin, Carlos Tassa
1Center for Systems Biology, Massachusetts General Hospital, 185 Cambridge Street, Boston, MA 02114 (USA).
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.
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