A simple and versatile design concept for fluorophore derivatives with intramolecular photostabilization.

Abstract:

:Intramolecular photostabilization via triple-state quenching was recently revived as a tool to impart synthetic organic fluorophores with 'self-healing' properties. To date, utilization of such fluorophore derivatives is rare due to their elaborate multi-step synthesis. Here we present a general strategy to covalently link a synthetic organic fluorophore simultaneously to a photostabilizer and biomolecular target via unnatural amino acids. The modular approach uses commercially available starting materials and simple chemical transformations. The resulting photostabilizer-dye conjugates are based on rhodamines, carbopyronines and cyanines with excellent photophysical properties, that is, high photostability and minimal signal fluctuations. Their versatile use is demonstrated by single-step labelling of DNA, antibodies and proteins, as well as applications in single-molecule and super-resolution fluorescence microscopy. We are convinced that the presented scaffolding strategy and the improved characteristics of the conjugates in applications will trigger the broader use of intramolecular photostabilization and help to emerge this approach as a new gold standard.

journal_name

Nat Commun

journal_title

Nature communications

authors

van der Velde JH,Oelerich J,Huang J,Smit JH,Aminian Jazi A,Galiani S,Kolmakov K,Guoridis G,Eggeling C,Herrmann A,Roelfes G,Cordes T

doi

10.1038/ncomms10144

subject

Has Abstract

pub_date

2016-01-11 00:00:00

pages

10144

issn

2041-1723

pii

ncomms10144

journal_volume

7

pub_type

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