4.8 Article

DrFLINC Contextualizes Super-resolution Activity Imaging

Journal

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 143, Issue 37, Pages 14951-14955

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/jacs.1c05530

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Funding

  1. NIH [R35 CA197622, R01 DK073368]

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Super-resolution activity imaging currently does not consider the locations of collaborating regulators/effectors in living cells. The DrFLINC technique, based on the FLINC principle, utilizes nonfluorescent Dronpa to enhance fluorescence fluctuations, leading to the development of a superior red label and a next-generation activity sensor for context-rich super-resolution biosensing.
Super-resolution activity imaging maps the biochemical architecture of living cells yet currently overlooks the locations of collaborating regulators/effectors. Building on the fluorescence fluctuation increase by contact (FLINC) principle, here we devise Dronpa-chromophore-removed FLINC (DrFLINC), where the nonfluorescent Dronpa can nevertheless enhance TagRFP-T fluorescence fluctuations. Exploiting DrFLINC, we develop a superior red label and a next-generation activity sensor for context-rich super-resolution biosensing.

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