Evidence map›Paper›PMID 37760100›Full record

ArticleBioengineering (Basel, Switzerland)2023

Substrate Stiffness Modulates TGF-β Activation and ECM-Associated Gene Expression in Fibroblasts.

Brijesh Kumar Verma, Aritra Chatterjee, Paturu Kondaiah, Namrata Gundiah

Abstract read
In one paragraph

Article in Bioengineering (Basel, Switzerland), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing 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

19 citing papers in PubMed.

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  8. Nuclear destabilisation - a possible genesis of cancer?Biological reviews of the Cambridge Philosophical Society · 2025
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  18. GelMA hydrogel dual photo-crosslinking to dynamically modulate ECM stiffness.Frontiers in bioengineering and biotechnology · 2024
    Article
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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

4 authors.

Brijesh Kumar VermaCentre for Biosystems Science and Engineering, Indian Institute of Science, Bengaluru 560012, India.
Aritra ChatterjeeCentre for Biosystems Science and Engineering, Indian Institute of Science, Bengaluru 560012, India.ORCID 0000-0002-5318-3459
Paturu KondaiahDepartment of Developmental Biology and Genetics, Indian Institute of Science, Bengaluru 560012, India.
Namrata GundiahDepartment of Mechanical Engineering, Indian Institute of Science, Bengaluru 560012, India.ORCID 0000-0002-9882-5232

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Transforming growth factor-β (TGF-β) is a multifunctional cytokine that regulates the expression of ECM-associated genes during early injury. Tissue fibrosis development is driven by synergistic cues between the evolving biochemical and mechanical milieu. Few studies have addressed the role of substrate stiffness on TGF-β activity and extracellular matrix (ECM)-associated genes. We used a commercial formulation of polydimethylsiloxane (PDMS) to fabricate substrates of 40 kPa, 300 kPa, and 1.5 MPa stiffness, and cultured the HMF3S fibroblasts on substrates. We quantified TGF-β protein secreted by HMF3S cells on different substrates using a TGF-β responsive promoter reporter assay. We also tested for variations in gene expression levels on the substrates using RT-PCR and Western blotting and determined the MMP-2 and MMP-9 activities with gelatin zymography. The results showed that TGF-β protein activation was significantly compromised at lower stiffnesses. The expression of integrin α5 decreased on lower stiffness substrates and correlated with inefficient TGF-β protein activation. Collagen I, collagen III, and MMP-2 expression levels were lower on softer substrates; there was little MMP-9 activity on all substrates. Cell and nuclear morphologies were more rounded on compliant substrates, correlating with increased tubulin expression. Proliferations were higher on stiffer substrates, whereas cells on softer substrates showed cell cycle arrest. These results demonstrated critical feedback mechanisms between substrate stiffness and ECM regulation by fibroblasts, relevant in fibrosis.

Indexed as

cell–matrix interactionscollagenMMPpolydimethylsiloxaneTGF-β, substrate stiffness

Identifiers

PMID37760100
PMCPMC10525202

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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.