Evidence map›Paper›PMID 32887938›Full record

ArticleMucosal immunology2021

MUC4 is overexpressed in idiopathic pulmonary fibrosis and collaborates with transforming growth factor β inducing fibrotic responses.

Javier Milara, Beatriz Ballester, M J Safont, Enrique Artigues, Juan Escrivá, Esteban Morcillo, Julio Cortijo

Open access · bronzeAbstract read
PubMed Publisher
In one paragraph

Article in Mucosal immunology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
2.0field-weighted citation impact, top 10% 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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 23 citations in OpenAlex.

  1. Pooled it
  2. Multi-omics insights into the mechanisms and prognosis of IPF.Genes and environment : the official journal of the Japanese Environmental Mutagen Society · 2026
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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

7 authors at 4 institutions in 1 country.

Javier Milara *Department of Pharmacology, Faculty of Medicine, University Jaume I, Castellón, Spain. xmilara@hotmail.com.ORCID http://orcid.org/0000-0001-6033-4211
Beatriz Ballester *Department of Pharmacology, Faculty of Medicine, University of Valencia, Valencia, Spain. beaballester7@gmail.com.
M J SafontOncology department, University General Hospital Consortium, Valencia, Spain.
Enrique ArtiguesSurgery Unit, University General Hospital Consortium, Valencia, Spain.
Juan EscriváThoracic Surgery Unit, University and Polytechnic Hospital La Fe, Valencia, Spain.
Esteban MorcilloDepartment of Pharmacology, Faculty of Medicine, University Jaume I, Castellón, Spain.
Julio CortijoCIBERES, Health Institute Carlos III, Valencia, Spain.
Hospital General Universitario De Valencia · ESUniversitat de València · ESUniversitat Jaume I · ESHospital Universitari i Politècnic La Fe · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Several mucins are implicated in idiopathic pulmonary fibrosis (IPF); however, there is no evidence regarding the role of MUC4 in the development of IPF. Here we demonstrated that MUC4 was overexpressed in IPF patients (n = 22) compared with healthy subjects (n = 21) and located in pulmonary arteries, bronchial epithelial cells, fibroblasts, and hyperplastic alveolar type II cells. Decreased expression of MUC4 using siRNA-MUC4 inhibited the mesenchymal/myofibroblast transformations of alveolar type II A549 cells and lung fibroblasts, as well as cell senescence and fibroblast proliferation induced by TGF-β1. The induction of the overexpression of MUC4 increased the effects of TGF-β1 on mesenchymal/myofibroblast transformations and cell senescence. MUC4 overexpression and siRNA-MUC4 gene silencing increased or decreased, respectively, the phosphorylation of TGFβRI and SMAD3, contributing to smad-binding element activation. Immunoprecipitation analysis and confocal immunofluorescence showed the formation of a protein complex between MUC4β/p-TGFβRI and p-SMAD3 in the cell membrane after TGF-β1 stimulation and in lung tissue from IPF patients. Bleomycin-induced lung fibrosis was reduced in mice transiently transfected with siRNA-MUC4. This study shows that MUC4 expression is enhanced in IPF and promotes fibrotic processes in collaboration with TGF-β1 canonical pathway that could be an attractive druggable target for human IPF.

Indexed as

A549 CellsCellular SenescenceFibroblastsGene Expression Regulation, NeoplasticHumansIdiopathic Pulmonary FibrosisLungMolecular Targeted TherapyMucin-4Respiratory MucosaRNA, Small InterferingSignal TransductionSmad3 ProteinTransforming Growth Factor betaUp-RegulationMUC4 protein, humanMucin-4RNA, Small InterferingSmad3 ProteinTransforming Growth Factor beta

Identifiers

PMID32887938
OpenAlexW3083089180

What OpenQuestion holds

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Registered trials

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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.