Evidence map›Paper›PMID 21926999›Full record

ArticleNature2011

Mechanical strain in actin networks regulates FilGAP and integrin binding to filamin A.

A J Ehrlicher, F Nakamura, J H Hartwig, D A Weitz, T P Stossel

Abstract read
In one paragraph

Article in Nature, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 194 papers.

0numbers the graph read from it
0cells of the map it votes in
194citing papers in PubMed
14.5field-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

194 citing papers in PubMed, 345 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. Article
  5. Article
  6. Sono-Mechanogenetics: Linking Ultrasound Physics With Cellular Mechanobiology.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Review
  7. Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Review
  13. Mechanisms of mitral valve development and disease.Frontiers in cardiovascular medicine · 2026
    Review
  14. Review
  15. Article
  16. Review
  17. Principles and regulation of mechanosensing.Journal of cell science · 2024
    Review
  18. Review
  19. Article
  20. Review

134 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

5 authors at 2 institutions in 1 country.

A J EhrlicherTranslational Medicine Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA.
F Nakamura
J H Hartwig
D A Weitz
T P Stossel
Brigham and Women's Hospital · USHarvard University · US

Funding

PHAGOCYTOSIS--PULMONARY ALVEOLAR MACROPHAGESR01HL019429 · NHLBI · MASSACHUSETTS GENERAL HOSPITAL · PI STOSSEL, THOMAS PETER · 1985 to 2015
$10.1M
CELL AND MOLECULAR BIOLOGY OF BLOOD AND ITS DISORDERST32HL007680 · NHLBI · MASSACHUSETTS GENERAL HOSPITAL · PI STOSSEL, THOMAS PETER · 1989 to 2009
$1.0M
NHLBI NIH HHS R01 HL019429NHLBI NIH HHS R01 HL19429NHLBI NIH HHS T32 HL007680NHLBI NIH HHS T32 HL07680
6 · The paper itself

Abstract

Mechanical stresses elicit cellular reactions mediated by chemical signals. Defective responses to forces underlie human medical disorders such as cardiac failure and pulmonary injury. The actin cytoskeleton's connectivity enables it to transmit forces rapidly over large distances, implicating it in these physiological and pathological responses. Despite detailed knowledge of the cytoskeletal structure, the specific molecular switches that convert mechanical stimuli into chemical signals have remained elusive. Here we identify the actin-binding protein filamin A (FLNA) as a central mechanotransduction element of the cytoskeleton. We reconstituted a minimal system consisting of actin filaments, FLNA and two FLNA-binding partners: the cytoplasmic tail of β-integrin, and FilGAP. Integrins form an essential mechanical linkage between extracellular and intracellular environments, with β-integrin tails connecting to the actin cytoskeleton by binding directly to filamin. FilGAP is an FLNA-binding GTPase-activating protein specific for RAC, which in vivo regulates cell spreading and bleb formation. Using fluorescence loss after photoconversion, a novel, high-speed alternative to fluorescence recovery after photobleaching, we demonstrate that both externally imposed bulk shear and myosin-II-driven forces differentially regulate the binding of these partners to FLNA. Consistent with structural predictions, strain increases β-integrin binding to FLNA, whereas it causes FilGAP to dissociate from FLNA, providing a direct and specific molecular basis for cellular mechanotransduction. These results identify a molecular mechanotransduction element within the actin cytoskeleton, revealing that mechanical strain of key proteins regulates the binding of signalling molecules.

Indexed as

Actin CytoskeletonActinsAnimalsBinding SitesContractile ProteinsFilaminsFluorescenceGTPase-Activating ProteinsHumansIntegrin beta ChainsLigandsMechanotransduction, CellularMicrofilament ProteinsMyosin Type IIProtein BindingRabbitsActinsARHGAP24 protein, humanContractile ProteinsFilaminsGTPase-Activating Proteinsintegrin beta7Integrin beta ChainsLigandsMicrofilament ProteinsMyosin Type II

Identifiers

PMID21926999
PMCPMC3204864
OpenAlexW1999707299

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.