Evidence map›Paper›PMID 34785668›Full record

ArticleNature communications2021

Optogenetic control of receptors reveals distinct roles for actin- and Cdc42-dependent negative signals in chemotactic signal processing.

George R R Bell, Esther Rincón, Emel Akdoğan, Sean R Collins

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
1.8field-weighted citation impact, top 15% 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

15 citing papers in PubMed, 25 citations in OpenAlex.

  1. Article
  2. Article
  3. Signaling and actin waves at a glance.Journal of cell science · 2025
    Review
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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.

George R R BellDepartment of Microbiology and Molecular Genetics, University of California, Davis, Davis, CA, USA.ORCID http://orcid.org/0000-0002-1916-8351
Esther RincónDepartment of Microbiology and Molecular Genetics, University of California, Davis, Davis, CA, USA.ORCID http://orcid.org/0000-0003-3870-1868
Emel AkdoğanDepartment of Microbiology and Molecular Genetics, University of California, Davis, Davis, CA, USA.
Sean R CollinsDepartment of Microbiology and Molecular Genetics, University of California, Davis, Davis, CA, USA. srcollins@ucdavis.edu.ORCID http://orcid.org/0000-0002-4276-5840
University of California, Davis · US

Funding

Rewiring Control of Leukocyte Motility for Therapeutic ApplicationDP2HD094656 · NICHD · UNIVERSITY OF CALIFORNIA AT DAVIS · PI COLLINS, SEAN RYAN · 2017 to 2017
$2.4M
NICHD NIH HHS DP2 HD094656
6 · The paper itself

Abstract

During chemotaxis, neutrophils use cell surface G Protein Coupled Receptors to detect chemoattractant gradients. The downstream signaling system is wired with multiple feedback loops that amplify weak inputs and promote spatial separation of cell front and rear activities. Positive feedback could promote rapid signal spreading, yet information from the receptors is transmitted with high spatial fidelity, enabling detection of small differences in chemoattractant concentration across the cell. How the signal transduction network achieves signal amplification while preserving spatial information remains unclear. The GTPase Cdc42 is a cell-front polarity coordinator that is predictive of cell turning, suggesting an important role in spatial processing. Here we directly measure information flow from receptors to Cdc42 by pairing zebrafish parapinopsina, an optogenetic G Protein Coupled Receptor with reversible ON/OFF control, with a spectrally compatible red/far red Cdc42 Fluorescence Resonance Energy Transfer biosensor. Using this toolkit, we show that positive and negative signals downstream of G proteins shape a rapid, dose-dependent Cdc42 response. Furthermore, F-actin and Cdc42 itself provide two distinct negative signals that limit the duration and spatial spread of Cdc42 activation, maintaining output signals local to the originating receptors.

Indexed as

ActinsAnimalscdc42 GTP-Binding ProteinCell MembraneCell PolarityCells, CulturedChemotaxisFluorescence Resonance Energy TransferOptogeneticsReceptors, G-Protein-CoupledSignal TransductionZebrafishActinscdc42 GTP-Binding ProteinReceptors, G-Protein-Coupled

Identifiers

PMID34785668
PMCPMC8595684
OpenAlexW3147183844

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.