SiR-Hoechst is a far-red DNA stain for live-cell nanoscopy.
Nat Commun 2015;
6:8497. [PMID:
26423723 PMCID:
PMC4600740 DOI:
10.1038/ncomms9497]
[Citation(s) in RCA: 183] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 08/27/2015] [Indexed: 12/20/2022] Open
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.
Existing DNA stains for live cell microscopy are either toxic, require illumination with blue light, or are not compatible with super-resolution microscopy. Here the authors develop SiRHoechst, a non-toxic far-red DNA stain that is compatible with super-resolution microscopy.
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