Evidence map›Paper›PMID 20495558›Full record

ArticleNature neuroscience2010

A genetically targeted optical sensor to monitor calcium signals in astrocyte processes.

Eiji Shigetomi, Sebastian Kracun, Michael V Sofroniew, Baljit S Khakh

Open access · greenAbstract read
In one paragraph

Article in Nature neuroscience, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 133 papers.

0numbers the graph read from it
0cells of the map it votes in
133citing papers in PubMed
6.7field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

133 citing papers in PubMed, 245 citations in OpenAlex.

  1. Review
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  5. CaNature communications · 2025
    Article
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  9. Review
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  11. Review
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  13. Review
  14. Astrocyte morphology.Trends in cell biology · 2024
    Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article

73 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 1 institution in 1 country.

Eiji ShigetomiDepartment of Physiology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, USA.
Sebastian Kracun
Michael V Sofroniew
Baljit S Khakh
University of California, Los Angeles · US

Funding

Functions of astrocyte calcium signaling in the striatumR01NS060677 · NINDS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI KHAKH, BALJIT · 2008 to 2018
$4.3M
Molecular Dissection of Reactive Astrogliosis: STAT3R01NS057624 · NINDS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI SOFRONIEW, MICHAEL V · 2008 to 2012
$1.8M
An approach to image calcium in small volumes of astrocytes in vivoR21NS071292 · NINDS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI KHAKH, BALJIT, SOFRONIEW, MICHAEL V · 2010 to 2011
$381k
NINDS NIH HHS NS057624NINDS NIH HHS NS060677NINDS NIH HHS R01 NS057624NINDS NIH HHS R01 NS060677NINDS NIH HHS R21 NS071292
6 · The paper itself

Abstract

Calcium signaling is studied as a potential form of astrocyte excitability that may control astrocyte involvement in synaptic and cerebrovascular regulation. Fundamental questions remain unanswered about astrocyte calcium signaling, as current methods can not resolve calcium in small volume compartments, such as near the cell membrane and in distal cell processes. We modified the genetically encoded calcium sensor GCaMP2 with a membrane-tethering domain, Lck, increasing the level of Lck-GCaMP2 near the plasma membrane tenfold as compared with conventional GCaMP2. Using Lck-GCaMP2 in rat hippocampal astrocyte-neuron cocultures, we measured near-membrane calcium signals that were evoked pharmacologically or by single action potential-mediated neurotransmitter release. Moreover, we identified highly localized and frequent spontaneous calcium signals in astrocyte somata and processes that conventional GCaMP2 failed to detect. Lck-GCaMP2 acts as a genetically targeted calcium sensor for monitoring calcium signals in previously inaccessible parts of astrocytes, including fine processes.

Indexed as

Action PotentialsAnimalsAstrocytesCalciumCalcium SignalingCell LineCell MembraneCoculture TechniquesHippocampusHumansNeuronsRatsRecombinant Fusion ProteinsTime FactorsCalciumRecombinant Fusion Proteins

Identifiers

PMID20495558
PMCPMC2920135
OpenAlexW2136095861

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.