Evidence map›Paper›PMID 37844244›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2023

Defined extracellular matrix compositions support stiffness-insensitive cell spreading and adhesion signaling.

James R W Conway, Aleksi Isomursu, Gautier Follain, Ville Härmä, Eva Jou-Ollé, Nicolas Pasquier, Eetu P O Välimäki, Juha K Rantala, Johanna Ivaska

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing 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

23 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Microengineered Gradient Hydrogels for Mechanobiology.Advanced healthcare materials · 2026
    Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Integrating mechanical cues inFrontiers in immunology · 2026
    Review
  11. Review
  12. Article
  13. Shape, Strain, and Stability: Epithelia Under High Strain.bioRxiv : the preprint server for biology · 2025
    Article
  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

9 authors.

James R W ConwayTurku Bioscience Centre, University of Turku and Åbo Akademi University, Turku FI-20520, Finland.ORCID 0000-0003-3787-277X
Aleksi IsomursuTurku Bioscience Centre, University of Turku and Åbo Akademi University, Turku FI-20520, Finland.ORCID 0000-0001-6006-9163
Gautier FollainTurku Bioscience Centre, University of Turku and Åbo Akademi University, Turku FI-20520, Finland.ORCID 0000-0003-0495-9529
Ville HärmäMisvik Biology Oy, Turku FI-20520, Finland.ORCID 0000-0001-5767-5226
Eva Jou-OlléTurku Bioscience Centre, University of Turku and Åbo Akademi University, Turku FI-20520, Finland.ORCID 0000-0002-7303-8304
Nicolas PasquierTurku Bioscience Centre, University of Turku and Åbo Akademi University, Turku FI-20520, Finland.ORCID 0000-0002-1932-6524
Eetu P O VälimäkiMisvik Biology Oy, Turku FI-20520, Finland.ORCID 0009-0001-2655-7021
Juha K RantalaMisvik Biology Oy, Turku FI-20520, Finland.ORCID 0000-0002-4999-5585
Johanna IvaskaTurku Bioscience Centre, University of Turku and Åbo Akademi University, Turku FI-20520, Finland.ORCID 0000-0002-6295-6556

Funding

Academy of Finland (AKA) 325464Academy of Finland (AKA) 332402Academy of Finland (AKA) 337530Academy of Finland (AKA) 338585Academy of Finland (AKA) 346131EC | Horizon Europe | Excellent Science | HORIZON EUROPE Marie Sklodowska-Curie Actions (MSCA) 841973SKR | Varsinais-Suomen Rahasto (Varsinais-Suomi Regional Fund) 00210428
6 · The paper itself

Abstract

Integrin-dependent adhesion to the extracellular matrix (ECM) mediates mechanosensing and signaling in response to altered microenvironmental conditions. In order to provide tissue- and organ-specific cues, the ECM is composed of many different proteins that temper the mechanical properties and provide the necessary structural diversity. Despite most human tissues being soft, the prevailing view from predominantly in vitro studies is that increased stiffness triggers effective cell spreading and activation of mechanosensitive signaling pathways. To address the functional coupling of ECM composition and matrix rigidity on compliant substrates, we developed a matrix spot array system to screen cell phenotypes against different ECM mixtures on defined substrate stiffnesses at high resolution. We applied this system to both cancer and normal cells and surprisingly identified ECM mixtures that support stiffness-insensitive cell spreading on soft substrates. Employing the motor-clutch model to simulate cell adhesion on biochemically distinct soft substrates, with varying numbers of available ECM-integrin-cytoskeleton (clutch) connections, we identified conditions in which spreading would be supported on soft matrices. Combining simulations and experiments, we show that cell spreading on soft is supported by increased clutch engagement on specific ECM mixtures and even augmented by the partial inhibition of actomyosin contractility. Thus, "stiff-like" spreading on soft is determined by a balance of a cell's contractile and adhesive machinery. This provides a fundamental perspective for in vitro mechanobiology studies, identifying a mechanism through which cells spread, function, and signal effectively on soft substrates.

Indexed as

Extracellular MatrixIntegrinsCell AdhesionCytoskeletonHumansSignal TransductionIntegrinsextracellular matrixintegrinsmicrocontact printingmolecular clutchsubstrate stiffness

Identifiers

PMID37844244
PMCPMC10614832

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.