SiR-Hoechst is a far-red DNA stain for live-cell nanoscopy.

Lukinavičius, Gražvydas; Blaukopf, Claudia; Pershagen, Elias; Schena, Alberto; Reymond, Luc; Derivery, Emmanuel; Gonzalez-Gaitan, Marcos; D'Este, Elisa et al. · Nat Commun · 2015

basic_science · Level V

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Abstract

Cell-permeable DNA stains are popular markers in live-cell imaging. Currently used DNA stains for live-cell imaging are either toxic, require illumination with blue light or are not compatible with super-resolution microscopy, thereby limiting their utility. Here we describe a far-red DNA stain, SiR-Hoechst, which displays minimal toxicity, is applicable in different cell types and tissues, and is compatible with super-resolution microscopy. The combination of these properties makes this probe a powerful tool for live-cell imaging.

Medical subject headings