Dendrimer-Based Signal Amplification of Click-Labelled DNA in Situ

ChemBioChem, DOI: 10.1002/cbic.201700209
ChemBioChem, oline article

The in vivo incorporation of alkyne-modified bases into the genome of cells is today the basis for the efficient detection of cell proliferation. Cells are grown in the presence of ethinyl-dU (EdU), fixed and permeabilised. The incorporated alkynes are then efficiently detected by using azide-containing fluorophores and the CuI-catalysed alkyne–azide click reaction. For a world in which constant improvement in the sensitivity of a given method is driving diagnostic advancement, we developed azide- and alkyne-modified dendrimers that allow the establishment of sandwich-type detection assays that show significantly improved signal intensities and signal-to-noise ratios far beyond that which is currently possible.

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TU München
Helmholtz München
MPI of Neurobiology
MPI of Biochemistry