PreprintCited by 25Advanced Fluorescence Microscopy TechniquesBiotin and Related StudiesNeuroscience and Neuropharmacology Research

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Rapid, biochemical tagging of cellular activity history in vivo

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Preprint — published as 10.1038/s41592-024-02375-7 · Paper page

Abstract

Intracellular calcium (Ca 2+ ) is ubiquitous to cell signaling across all biology. While existing fluorescent sensors and reporters can detect activated cells with elevated Ca 2+ levels, these approaches require implants to deliver light to deep tissue, precluding their noninvasive use in freely-behaving animals. Here we engineered an enzyme-catalyzed approach that rapidly and biochemically tags cells with elevated Ca 2+ in vivo. Ca 2+ -activated Split-TurboID (CaST) labels activated cells within 10 minutes with an exogenously-delivered biotin molecule. The enzymatic signal increases with Ca 2+ concentration and biotin labeling time, demonstrating that CaST is a time-gated integrator of total Ca 2+ activity. Furthermore, the CaST read-out can be performed immediately after activity labeling, in contrast to transcriptional reporters that require hours to produce signal. These capabilities allowed us to apply CaST to tag prefrontal cortex neurons activated by psilocybin, and to correlate the CaST signal with psilocybin-induced head-twitch responses in untethered mice.

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Metadata

Authors
Zhang, R., Anguiano, M., Aarrestad, I. K., Lin, S., Chandra, J., Vadde, S. S., Olson, D. E., & Kim, C. K.
Affiliations
University of California, Davis (US)
Corresponding author
Kim, Christina K.
Venue
Nature Methods
Publisher
openRxiv
Published
2023-09-08
Volume
21
Issue
9
Pages
1725-1735
ISSN
1548-7091 (ISSN-L)
OpenAlex
W4401339284
Cited by
25
References
1
Citations by year
2026: 10 · 2025: 12 · 2024: 3
FWCI
4.82
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Nature Methods (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • PubMed Central (submittedVersion, cc-by-nc-nd)
  • eScholarship (California Digital Library) (submittedVersion, cc-by)
Funders
  • National Science Foundation (GRFP #000895154, 1019469, 2152260)
  • U.S. Department of Health and Human Services (T32MH112507, R35GM148182, DP2MH136588)
  • Brain and Behavior Research Foundation
  • Arnold and Mabel Beckman Foundation
  • Kinship Foundation (Searle Scholars Program #SSP-2022-107)
  • National Alliance for Research on Schizophrenia and Depression
  • Searle Scholars Program
  • National Institutes of Health
  • University of California, Davis (T32 MH112507)
  • National Institute of Mental Health (DP2MH136588, T32MH082174, T32MH112507)
  • National Institute of General Medical Sciences (R01GM128997, R25GM116690, R35GM148182)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biophysics › Advanced Fluorescence Microscopy Techniques
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Biotin and Related Studies
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
intracellular calcium, psilocybin, prefrontal cortex neurons, head-twitch response, neuronal activity imaging

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