Evidence map›Paper›PMID 34887658›Full record

ArticleInternational journal of chronic obstructive pulmonary disease

PM2.5 Induces Airway Remodeling in Chronic Obstructive Pulmonary Diseases via the Wnt5a/β-Catenin Pathway.

Weifeng Zou, Xiaoqian Wang, Ruiting Sun, Jinxing Hu, Dong Ye, Ge Bai, Sha Liu, Wei Hong, Meihua Guo, Pixin Ran

Open access · goldAbstract read
In one paragraph

Article in International journal of chronic obstructive pulmonary disease. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
3.4field-weighted citation impact, top 6% 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

15 citing papers in PubMed, 27 citations in OpenAlex.

  1. Antioxidants (Basel, Switzerland) · 2026
    Article
  2. Review
  3. Exploring the Roles of Wnt Signaling Pathway and Non-Coding RNAs in COPD.International journal of chronic obstructive pulmonary disease · 2026
    Review
  4. Article
  5. Deciphering the Tenascin-C Nexus: A Comprehensive Review of Its Involvement in Chronic Respiratory Diseases.Pathophysiology : the official journal of the International Society for Pathophysiology · 2025
    Review
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Trends in the Burden of COPD Attributable to Ambient PMRisk management and healthcare policy · 2023
    Article
  15. 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

10 authors at 5 institutions in 1 country.

Weifeng ZouState Key Laboratory of Respiratory Disease, Guangzhou Chest Hospital, Guangzhou, Guangdong, People's Republic of China.ORCID 0000-0002-6514-0704
Xiaoqian WangThe Third Hospital of Mianyang, Mianyang, Sichuan, People's Republic of China.
Ruiting SunNational Center for Respiratory Medicine, State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Diseases, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, People's Republic of China.
Jinxing HuState Key Laboratory of Respiratory Disease, Guangzhou Chest Hospital, Guangzhou, Guangdong, People's Republic of China.
Dong YeState Key Laboratory of Respiratory Disease, Guangzhou Medical University, Guangzhou, Guangdong, People's Republic of China.
Ge BaiNational Center for Respiratory Medicine, State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Diseases, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, People's Republic of China.ORCID 0000-0001-9319-039X
Sha LiuThe Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan, People's Republic of China.
Wei HongGMU-GIBH Joint School of Life Sciences, Guangzhou Medical University, Guangzhou, Guangdong, People's Republic of China.
Meihua GuoState Key Laboratory of Respiratory Disease, Guangzhou Chest Hospital, Guangzhou, Guangdong, People's Republic of China.
Pixin RanNational Center for Respiratory Medicine, State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Diseases, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, People's Republic of China.
State Key Laboratory of Respiratory Disease · CNFirst Affiliated Hospital of Guangzhou Medical University · CNGuangzhou Medical University · CNMianyang Third People's Hospital · CNUniversity of South China · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundFine-particulate matter ≤2.5 μm in diameter (PM2.5)-associated airway remodeling has recently been recognized as a central feature of COPD. Activation of the Wnt/β-catenin pathway is closely related to the occurrence of airway remodeling. Accordingly, the goal of this study was to determine whether the Wnt5a/β-Catenin pathway is involved in PM2.5-induced smooth muscle proliferation in vivo and in vitro, which promotes the development of airway remodeling in subjects with COPD.

methodsThe effect of Wnt5a on β-Catenin-mediated airway remodeling was assessed using an in vivo model of PM2.5-induced COPD and PM2.5-exposed human bronchial smooth muscle cells (HBSMCs) in vitro. Small animal spirometry was used to measure lung function in mice. H&E staining and immunohistochemistry were performed to inspect emphysema and airway remodeling indices. Real-time PCR was used to detect Wnt5a, β-Catenin, TGF-β1, CyclinD1 and c-myc mRNA expression. The CCK8 assay was performed to detect cellular activity. Western blotting was performed to assess PCNA, α-SMA, Wnt5a, β-Catenin, PDGFRβ and TenascinC protein expression. β-Catenin expression was detected using cellular immunofluorescence.

resultsExposure to PM2.5 led to emphysema, airway wall thickening, an increased smooth muscle layer thickness, decreased lung function and increased expression of the Wnt5a, β-Catenin, PDGFRβ and Tenascin C proteins in the mouse lung tissue. BOX5 (a Wnt5a antagonist) alleviated these PM2.5-induced outcomes in mice. Moreover, PM2.5 induced the expression of the Wnt5a, β-Catenin, TGF-β1, CyclinD1 and c-myc mRNAs in HBSMCs. BOX5 also inhibited the PM2.5-induced increases in PCNA, α-SMA, Wnt5a, β-Catenin, PDGFRβ and Tenascin C protein expression in HBSMCs.

conclusionOur findings suggest that PM2.5 exposure induces HBSMC proliferation, contributing to airway remodeling via the Wnt5a/β-Catenin signaling pathway in vivo and in vitro, which might be a target for COPD treatment.

Indexed as

Airway RemodelingPulmonary Disease, Chronic ObstructiveAnimalsbeta CateninHumansMiceParticulate MatterWnt-5a ProteinWnt Signaling Pathwaybeta CateninParticulate MatterWnt-5a ProteinWNT5A protein, humanairway remodeling, PM2.5COPDWnt5a/β-Catenin

Identifiers

PMID34887658
PMCPMC8650833
OpenAlexW4200346878

What OpenQuestion holds

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LicenceCC BY-NC
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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.