Specific protein labeling with caged fluorophores for dual-color imaging and super-resolution microscopy in living cells† †Electronic supplementary information (ESI) available. See DOI: 10.1039/c6sc02088g Click here for additional data file.
نویسندگان
چکیده
We present new fluorophore-conjugates for dual-color photoactivation and super-resolution imaging inside live mammalian cells. These custom-designed, photo-caged Q-rhodamines and fluoresceins are cell-permeable, bright and localize specifically to intracellular targets. We utilized established orthogonal protein labeling strategies to precisely attach the photoactivatable fluorophores to proteins with subsequent activation of fluorescence by irradiation with UV light. That way, diffusive cytosolic proteins, histone proteins as well as filigree mitochondrial networks and focal adhesion proteins were visualized inside living cells. We applied the new photoactivatable probes in inverse fluorescence recovery after photo-bleaching (iFRAP) experiments, gaining real-time access to protein dynamics from live biological settings with resolution in space and time. Finally, we used the caged Q-rhodamine for photo-activated localization microscopy (PALM) on both fixed and live mammalian cells, where the superior molecular brightness and photo-stability directly resulted in improved localization precisions for different protein targets.
منابع مشابه
Specific protein labeling with caged fluorophores for dual-color imaging and super-resolution microscopy in living cells.
We present new fluorophore-conjugates for dual-color photoactivation and super-resolution imaging inside live mammalian cells. These custom-designed, photo-caged Q-rhodamines and fluoresceins are cell-permeable, bright and localize specifically to intracellular targets. We utilized established orthogonal protein labeling strategies to precisely attach the photoactivatable fluorophores to protei...
متن کاملDynamic multicolor protein labeling in living cells† †Electronic supplementary information (ESI) available. See DOI: 10.1039/c7sc01364g Click here for additional data file. Click here for additional data file. Click here for additional data file.
متن کامل
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Institute of Applied Physics, Karlsruhe Instit Germany Institute of Nanotechnology, Karlsruhe Eggenstein-Leopoldshafen, Germany Center for Nano Energy Materials, Schoo Northwestern Polytechnical University, 71 nwpu.edu.cn Laboratory of Electron Microscopy, Karlsru Karlsruhe, Germany Institute of Toxicology and Genetics, Karlsr Eggenstein-Leopoldshafen, Germany Department of Physics, University ...
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Understanding interfacial phenomena in soft materials such as wetting, colloidal stability, coalescence, and friction warrants non-invasive imaging with nanometer resolution. Super-resolution microscopy has emerged as an attractive method to visualize nanostructures labeled covalently with fluorescent tags, but this is not amenable to all interfaces. Inspired by PAINT we developed a simple and ...
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We demonstrate high-density labelling of cellular DNA and RNA using click chemistry and perform confocal and super-resolution microscopy. We visualize the crescent and ring-like structure of densely packed RNA in nucleoli. We further demonstrate click chemistry with unnatural amino acids for super-resolution imaging of outer-membrane proteins of E. coli.
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عنوان ژورنال:
دوره 8 شماره
صفحات -
تاریخ انتشار 2017