Evidence map›Paper›PMID 36798192›Full record

ArticlebioRxiv : the preprint server for biology2023

Diminishing neuronal acidification by channelrhodopsins with low proton conduction.

Rebecca Frank Hayward, F Phil Brooks, Shang Yang, Shiqiang Gao, Adam E Cohen

Abstract readPreprint
PubMed Full text at PMC Publisher
In one paragraph

Article in bioRxiv : the preprint server for biology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
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

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors.

Rebecca Frank HaywardSchool of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138.
F Phil BrooksDepartment of Chemistry, Harvard University, Cambridge, MA 02138.
Shang YangDepartment of Neurophysiology, University of Wurzburg, Germany.
Shiqiang GaoDepartment of Neurophysiology, University of Wurzburg, Germany.
Adam E CohenDepartment of Chemistry, Harvard University, Cambridge, MA 02138.

Funding

Two-Photon All-Optical Electrophysiology in Behaving MiceRF1NS126043 · NINDS · HARVARD UNIVERSITY · PI COHEN, ADAM EZRA · 2022 to 2022
$2.2M
Brain-wide correlation of single-cell firing properties to patterns of gene expressionRF1MH117042 · NIMH · HARVARD UNIVERSITY · PI COHEN, ADAM EZRA · 2018 to 2018
$1.2M
NIMH NIH HHS RF1 MH117042NINDS NIH HHS RF1 NS126043
6 · The paper itself

Abstract

Many channelrhodopsins are permeable to protons. We found that in neurons, activation of a high-current channelrhodopsin, CheRiff, led to significant acidification, with faster acidification in the dendrites than in the soma. Experiments with patterned optogenetic stimulation in monolayers of HEK cells established that the acidification was due to proton transport through the opsin, rather than through other voltage-dependent channels. We identified and characterized two opsins which showed large photocurrents, but small proton permeability, PsCatCh2.0 and ChR2-3M. PsCatCh2.0 showed excellent response kinetics and was also spectrally compatible with simultaneous voltage imaging with QuasAr6a. Stimulation-evoked acidification is a possible source of disruptions to cell health in scientific and prospective therapeutic applications of optogenetics. Channelrhodopsins with low proton permeability are a promising strategy for avoiding these problems. Statement of Significance: Acidification is an undesirable artifact of optogenetic stimulation. Low proton-permeability opsins minimize this artifact while still allowing robust optogenetic control.

Identifiers

PMID36798192
PMCPMC9934520

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Registered trials

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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.