Evidence map›Paper›PMID 34281389›Full record

ArticlemBio2021

Persister Escherichia coli Cells Have a Lower Intracellular pH than Susceptible Cells but Maintain Their pH in Response to Antibiotic Treatment.

Olivia Goode, Ashley Smith, Ashraf Zarkan, Jehangir Cama, Brandon M Invergo, Daaniyah Belgami, Santiago Caño-Muñiz, Jeremy Metz, Paul O'Neill, Aaron Jeffries and 4 more

Open access · goldAbstract read
In one paragraph

Article in mBio, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed
11.9field-weighted citation impact, top 1% 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

41 citing papers in PubMed, 87 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Review
  5. A Ratiometric pH Sensor for Gram-Positive and Gram-Negative Bacteria.Journal of the American Chemical Society · 2026
    Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Bacterial persisters: molecular mechanisms and therapeutic development.Signal transduction and targeted therapy · 2024
    Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
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

14 authors at 4 institutions in 1 country.

Olivia GoodeLiving Systems Institute, University of Exetergrid.8391.3, Exeter, United Kingdom.
Ashley SmithLiving Systems Institute, University of Exetergrid.8391.3, Exeter, United Kingdom.
Ashraf ZarkanDepartment of Genetics, University of Cambridgegrid.5335.0, Cambridge, United Kingdom.
Jehangir CamaLiving Systems Institute, University of Exetergrid.8391.3, Exeter, United Kingdom.
Brandon M InvergoTranslational Research Exchange at Exeter, University of Exetergrid.8391.3, Exeter, United Kingdom.
Daaniyah BelgamiDepartment of Genetics, University of Cambridgegrid.5335.0, Cambridge, United Kingdom.
Santiago Caño-MuñizDepartment of Genetics, University of Cambridgegrid.5335.0, Cambridge, United Kingdom.
Jeremy MetzLiving Systems Institute, University of Exetergrid.8391.3, Exeter, United Kingdom.
Paul O'NeillSchool of Biosciences, College of Life and Environmental Sciences, University of Exetergrid.8391.3, Exeter, United Kingdom.
Aaron JeffriesSchool of Biosciences, College of Life and Environmental Sciences, University of Exetergrid.8391.3, Exeter, United Kingdom.
Isobel H NorvilleDstl, Porton Down, Salisbury, United Kingdom.
Jonathan DavidDstl, Porton Down, Salisbury, United Kingdom.
David SummersDepartment of Genetics, University of Cambridgegrid.5335.0, Cambridge, United Kingdom.
Stefano PagliaraLiving Systems Institute, University of Exetergrid.8391.3, Exeter, United Kingdom.
University of Exeter · GBUniversity of Cambridge · GBDefence Science and Technology Laboratory · GBMRC Laboratory of Molecular Biology · GB

Funding

Biotechnology and Biological Sciences Research Council BB/M009122/1Medical Research Council MC_PC_17189Medical Research Council MCPC17189Wellcome TrustWellcome Trust 204909/Z/16/Z
6 · The paper itself

Abstract

Persister and viable but non-culturable (VBNC) cells are two clonal subpopulations that can survive multidrug exposure via a plethora of putative molecular mechanisms. Here, we combine microfluidics, time-lapse microscopy, and a plasmid-encoded fluorescent pH reporter to measure the dynamics of the intracellular pH of individual persister, VBNC, and susceptible Escherichia coli cells in response to ampicillin treatment. We found that even before antibiotic exposure, persisters have a lower intracellular pH than those of VBNC and susceptible cells. We then investigated the molecular mechanisms underlying the observed differential pH regulation in persister E. coli cells and found that this is linked to the activity of the enzyme tryptophanase, which is encoded by

Indexed as

AmpicillinAnti-Bacterial AgentsCytoplasmEscherichia coliHomeostasisHydrogen-Ion ConcentrationMicrobial Sensitivity TestsMicrobial ViabilityMicrofluidicsMicroscopy, FluorescenceTime-Lapse ImagingTryptophanaseAmpicillinAnti-Bacterial AgentsTryptophanaseantibiotic resistanceantibioticsgene sequencinggenomicsindoleintracellular pHmicrofluidicspersistersregulation of gene expressionsingle-cell analysistryptophan operonviable but non-culturable cells

Identifiers

PMID34281389
PMCPMC8406257
OpenAlexW3186246066

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.