Evidence map›Paper›PMID 26572560›Full record

ArticleCell calcium2015

A comparison of fluorescent Ca²⁺ indicators for imaging local Ca²⁺ signals in cultured cells.

Jeffrey T Lock, Ian Parker, Ian F Smith

Open access · greenAbstract readComparative Study
In one paragraph

Article in Cell calcium, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 114 papers.

0numbers the graph read from it
0cells of the map it votes in
114citing papers in PubMed
5.7field-weighted citation impact, top 3% 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

114 citing papers in PubMed, 184 citations in OpenAlex.

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  18. In the activation of HPV-specific human B cells HPV-VLP vaccines mimic membrane-associated antigens.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
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54 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

3 authors at 1 institution in 1 country.

Jeffrey T LockDepartment of Neurobiology and Behavior, University of California, Irvine, CA, United States. Electronic address: lockj@uci.edu.
Ian ParkerDepartment of Neurobiology and Behavior, University of California, Irvine, CA, United States; Department of Physiology and Biophysics, University of California, Irvine, CA, United States. Electronic address: iparker@uci.edu.
Ian F SmithDepartment of Neurobiology and Behavior, University of California, Irvine, CA, United States. Electronic address: ismith@uci.edu.
University of California, Irvine · US

Funding

Multi-scale observation and modeling of IP3/Ca signalingR01GM065830 · NIGMS · UNIVERSITY OF CALIF-LOS ALAMOS NAT LAB · PI MAK, DON-ON DANIEL, PARKER, IAN · 2002 to 2017
$10.7M
Elementary Events of Intracellular Calcium SignalingR37GM048071 · NIGMS · UNIVERSITY OF CALIFORNIA-IRVINE · PI PARKER, IAN · 2011 to 2020
$5.3M
SPATIAL AND TEMPORAL ASPECTS OF INSP3 SIGNALLINGR01GM048071 · NIGMS · UNIVERSITY OF CALIFORNIA-IRVINE · PI PARKER, IAN · 1992 to 2010
$3.9M
Calcium Signals Within Membrane NanotubesR01GM100201 · NIGMS · UNIVERSITY OF CALIFORNIA-IRVINE · PI SMITH, IAN F · 2012 to 2016
$1.5M
NIGMS NIH HHS GM 048071NIGMS NIH HHS GM 065830NIGMS NIH HHS GM 100201NIGMS NIH HHS R01 GM048071NIGMS NIH HHS R01 GM065830NIGMS NIH HHS R01 GM100201NIGMS NIH HHS R37 GM048071
6 · The paper itself

Abstract

Localized subcellular changes in Ca(2+) serve as important cellular signaling elements, regulating processes as diverse as neuronal excitability and gene expression. Studies of cellular Ca(2+) signaling have been greatly facilitated by the availability of fluorescent Ca(2+) indicators. The respective merits of different indicators to monitor bulk changes in cellular Ca(2+) levels have been widely evaluated, but a comprehensive comparison for their use in detecting and analyzing local, subcellular Ca(2+) signals is lacking. Here, we evaluated several fluorescent Ca(2+) indicators in the context of local Ca(2+) signals (puffs) evoked by inositol 1,4,5-trisphosphate (IP3) in cultured human neuroblastoma SH-SY5Y cells, using high-speed video-microscopy. Altogether, nine synthetic Ca(2+) dyes (Fluo-4, Fluo-8, Fluo-8 high affinity, Fluo-8 low affinity, Oregon Green BAPTA-1, Cal-520, Rhod-4, Asante Calcium Red, and X-Rhod-1) and three genetically-encoded Ca(2+)-indicators (GCaMP6-slow, -medium and -fast variants) were tested; criteria include the magnitude, kinetics, signal-to-noise ratio and detection efficiency of local Ca(2+) puffs. Among these, we conclude that Cal-520 is the optimal indicator for detecting and faithfully tracking local events; that Rhod-4 is the red-emitting indicator of choice; and that none of the GCaMP6 variants are well suited for imaging subcellular Ca(2+) signals.

Indexed as

CalciumCalcium SignalingCells, CulturedFluorescent DyesHumansInositol 1,4,5-TrisphosphateInositol 1,4,5-Trisphosphate ReceptorsKineticsCalciumFluorescent DyesInositol 1,4,5-TrisphosphateInositol 1,4,5-Trisphosphate ReceptorsCalciumFluorescent indicatorsGCaMP6Genetically encoded calcium indicatorsLocal calcium signals

Identifiers

PMID26572560
PMCPMC4658286
OpenAlexW2213754585

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.