Time-tagged ticker tapes for intracellular recordings.

Time-tagged ticker tapes for intracellular recordings.
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DOI:
10.1038/s41587-022-01524-7
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发表时间:
2023-05
影响因子:
46.9
通讯作者:
Cohen, Adam E. E.
Cohen, Adam E. E.
中科院分区:
工程技术1区
文献类型:
--
作者:
Lin, Dingchang;Li, Xiuyuan;Moult, Eric;Park, Pojeong;Tang, Benjamin;Shen, Hao;Grimm, Jonathan B. B.;Falco, Natalie;Jia, Bill Z. Z.;Baker, David;Lavis, Luke D. D.;Cohen, Adam E. E.

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Recording transcriptional histories of a cell would enable deeper understanding of cellular developmental trajectories and responses to external perturbations. Here, we describe an engineered protein fiber that incorporates diverse fluorescent marks during its growth to store a ticker tape-like history. An embedded HaloTag reporter incorporates user-supplied dyes, leading to colored stripes that map the growth of each individual fiber to wall-clock time. A co-expressed eGFP tag driven by a promoter of interest records a history of transcriptional activation. High-resolution multispectral imaging on fixed samples reads the cellular histories, and interpolation of eGFP marks relative to HaloTag timestamps provides accurate absolute timing. We demonstrate recordings of doxycycline-induced transcription in HEK cells and cFos activation in cultured neurons, with a single-cell absolute accuracy of 30-40 min over a 12-hour recording. The protein-based ticker tape design we present here could be generalized to achieve massively parallel single-cell recordings of diverse physiological modalities.
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