Evidence map›Paper›PMID 21283814›Full record

ArticlePloS one2011

Acidic extracellular pH promotes activation of integrin α(v)β(3).

Ranjani K Paradise, Douglas A Lauffenburger, Krystyn J Van Vliet

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 58 papers.

0numbers the graph read from it
0cells of the map it votes in
58citing papers in PubMed
6.1field-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

58 citing papers in PubMed, 122 citations in OpenAlex.

  1. Article
  2. Review
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  7. Article
  8. pH-regulated single cell migration.Pflugers Archiv : European journal of physiology · 2024
    Review
  9. Acid-base transporters in the context of tumor heterogeneity.Pflugers Archiv : European journal of physiology · 2024
    Review
  10. Review
  11. Article
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  15. Article
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  19. Review
  20. Development of aJournal of labelled compounds & radiopharmaceuticals · 2021
    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

3 authors at 1 institution in 1 country.

Ranjani K ParadiseDepartment of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America.
Douglas A Lauffenburger
Krystyn J Van Vliet
Massachusetts Institute of Technology · US

Funding

Spatial Segregation of Cell Functioning During MotilityR01GM069668 · NIGMS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI WELLS, ALAN · 2004 to 2019
$4.7M
Molecular, Cell and Tissue Biomechanics Training GrantT32EB006348 · NIBIB · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI KAMM, ROGER D · 2006 to 2010
$1.6M
NIBIB NIH HHS T32 EB006348NIBIB NIH HHS T32EB006348NIGMS NIH HHS R01 GM069668NIGMS NIH HHS U54-GM069668
6 · The paper itself

Abstract

Acidic extracellular pH is characteristic of the cell microenvironment in several important physiological and pathological contexts. Although it is well established that acidic extracellular pH can have profound effects on processes such as cell adhesion and migration, the underlying molecular mechanisms are largely unknown. Integrin receptors physically connect cells to the extracellular matrix, and are thus likely to modulate cell responses to extracellular conditions. Here, we examine the role of acidic extracellular pH in regulating activation of integrin α(v)β(3). Through computational molecular dynamics simulations, we find that acidic extracellular pH promotes opening of the α(v)β(3) headpiece, indicating that acidic pH can thereby facilitate integrin activation. This prediction is consistent with our flow cytometry and atomic force microscope-mediated force spectroscopy assays of integrin α(v)β(3) on live cells, which both demonstrate that acidic pH promotes activation at the intact cell surface. Finally, quantification of cell morphology and migration measurements shows that acidic extracellular pH affects cell behavior in a manner that is consistent with increased integrin activation. Taken together, these computational and experimental results suggest a new and complementary mechanism of integrin activation regulation, with associated implications for cell adhesion and migration in regions of altered pH that are relevant to wound healing and cancer.

Indexed as

AnimalsCell AdhesionCell MovementCells, CulturedComputer SimulationExtracellular MatrixFlow CytometryHumansHydrogen-Ion ConcentrationIntegrin alphaVbeta3Microscopy, Atomic ForceMolecular Dynamics SimulationIntegrin alphaVbeta3

Identifiers

PMID21283814
PMCPMC3023767
OpenAlexW2076352550

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.