Evidence map›Paper›PMID 23258227›Full record

Trial reportAmerican journal of respiratory cell and molecular biology2013

Matrices of physiologic stiffness potently inactivate idiopathic pulmonary fibrosis fibroblasts.

Aleksandar Marinković, Fei Liu, Daniel J Tschumperlin

Open access · greenAbstract readClinical Trial
In one paragraph

Trial report in American journal of respiratory cell and molecular biology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 103 papers.

0numbers the graph read from it
0cells of the map it votes in
103citing papers in PubMed
6.6field-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

103 citing papers in PubMed, 170 citations in OpenAlex.

  1. Dual αAmerican journal of respiratory and critical care medicine · 2025
    Trial
  2. Mechanosignaling through YAP and TAZ drives fibroblast activation and fibrosis.American journal of physiology. Lung cellular and molecular physiology · 2015
    Trial
  3. ADAMTS14 is a novel modulator of fibroblast mechanoactivation in pulmonary fibrosis.American journal of respiratory and critical care medicine · 2026
    Article
  4. Review
  5. Review
  6. Article
  7. Mechanobiology and Resolution of Lung Fibrosis.Annual review of physiology · 2026
    Review
  8. Review
  9. The importance of mechanical forces in chronic respiratory diseases.European respiratory review : an official journal of the European Respiratory Society · 2026
    Review
  10. Review
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. Article

43 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

3 authors at 1 institution in 1 country.

Aleksandar MarinkovićDivision of Molecular and Integrative Physiological Sciences, Department of Environmental Health, Harvard School of Public Health, Boston, MA 02115, USA.
Fei Liu
Daniel J Tschumperlin
Department of Physiological Sciences · RU

Funding

Training Program in Molecular and Integrative Physiological SciencesT32HL007118 · NHLBI · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI LU, QUAN · 1985 to 2025
$14.3M
Mechanobiology of Lung FibrosisR01HL092961 · NHLBI · MAYO CLINIC ROCHESTER · PI Daniel J. Tschumperlin · 2009 to 2026
$8.0M
Translational Research in Regenerative MedicineT32EB005583 · NIBIB · RUTGERS, THE STATE UNIV OF N.J. · PI LEE, KIBUM, PAREKKADAN, BIJU · 2006 to 2022
$4.7M
NHLBI NIH HHS R01 HL092961NHLBI NIH HHS R01HL092961NHLBI NIH HHS T32 HL007118NHLBI NIH HHS T32HL007118NIBIB NIH HHS T32 EB005583
6 · The paper itself

Abstract

Fibroblasts from patients with idiopathic pulmonary fibrosis (IPF) have been shown to differ from normal lung fibroblasts in functional behaviors that contribute to the pathogenesis of IPF, including the expression of contractile proteins and proliferation, but how such behaviors vary in matrices with stiffness matched to normal and fibrotic lung tissue remains unknown. Here, we tested whether pathologic changes in matrix stiffness control IPF and normal lung tissue-derived fibroblast functions, and compared the relative efficacy of mechanical cues to an antifibrotic lipid mediator, prostaglandin E(2) (PGE(2)). Fibroblasts were grown on collagen I-coated glass or hydrogel substrates of discrete stiffnesses, spanning the range of normal and fibrotic lung tissue. Traction microscopy was used to quantify contractile function. The CyQuant Cell Proliferation Assay (Invitrogen, Carlsbad, CA) was used to assess changes in cell number, and PGE(2) concentrations were measured by ELISA. We confirmed differences in proliferation and PGE(2) synthesis between IPF and normal tissue-derived fibroblasts on rigid substrates. However, IPF fibroblasts remained highly responsive to changes in matrix stiffness, and both proliferative and contractile differences between IPF and normal fibroblasts were ablated on physiologically soft matrices. We also confirmed the relative resistance of IPF fibroblasts to PGE(2), while demonstrating that decreases in matrix stiffness and the inhibition of Rho kinase both potently attenuate contractile function in IPF-derived fibroblasts. We conclude that pathologic changes in the mechanical environment control important IPF fibroblast functions. Understanding how mechanical cues control fibroblast function may offer new opportunities for targeting these cells, even when they are resistant to antifibrotic pharmacological agents or biological mediators.

Indexed as

Cell ProliferationCells, CulturedCollagen Type IDinoprostoneExtracellular MatrixFibroblastsHumansIdiopathic Pulmonary FibrosisProtein Kinase Inhibitorsrho-Associated KinasesCollagen Type IDinoprostoneProtein Kinase Inhibitorsrho-Associated Kinases

Identifiers

PMID23258227
PMCPMC3653602
OpenAlexW2031938767

What OpenQuestion holds

Textmetadata
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.