Evidence map›Paper›PMID 34049951›Full record

ArticleThe European respiratory journal2022

Novel insights into surfactant protein C trafficking revealed through the study of a pathogenic mutant.

Jennifer A Dickens, Eimear N Rutherford, Susana Abreu, Joseph E Chambers, Matthew O Ellis, Annemarie van Schadewijk, Pieter S Hiemstra, Stefan J Marciniak

Open access · hybridAbstract read
In one paragraph

Article in The European respiratory journal, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
2.3field-weighted citation impact, top 11% 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

20 citing papers in PubMed, 22 citations in OpenAlex.

  1. Article
  2. Lung-tropic dual AAV-SP-C and microRNA gene therapy attenuates lung injury in mutant Sftpc mice.Molecular therapy : the journal of the American Society of Gene Therapy · 2026
    Article
  3. Article
  4. Review
  5. Article
  6. Review
  7. Article
  8. Article
  9. Review
  10. Targeting USP11 counteractsTheranostics · 2025
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Insights into the Pathogenesis of Pulmonary Fibrosis from Genetic Diseases.American journal of respiratory cell and molecular biology · 2022
    Review
  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 2 institutions in 2 countries.

Jennifer A DickensCambridge Institute for Medical Research, Cambridge, UK jac72@cam.ac.uk.
Eimear N RutherfordCambridge Institute for Medical Research, Cambridge, UK.
Susana AbreuCambridge Institute for Medical Research, Cambridge, UK.
Joseph E ChambersCambridge Institute for Medical Research, Cambridge, UK.
Matthew O EllisCambridge Institute for Medical Research, Cambridge, UK.
Annemarie van SchadewijkDept of Pulmonology, Leiden University Medical Center, Leiden, The Netherlands.
Pieter S HiemstraDept of Pulmonology, Leiden University Medical Center, Leiden, The Netherlands.ORCID 0000-0002-0238-5982
Stefan J MarciniakCambridge Institute for Medical Research, Cambridge, UK.ORCID 0000-0001-8472-7183
Leiden University Medical Center · NLIsaac Newton Institute for Mathematical Sciences · GB

Funding

Department of HealthMedical Research Council G1002610Medical Research Council MR/R009120/1Medical Research Council MR/S005552/1Medical Research Council MR/V028669/1
6 · The paper itself

Abstract

backgroundAlveolar epithelial cell dysfunction plays an important role in the pathogenesis of idiopathic pulmonary fibrosis (IPF), but remains incompletely understood. Some monogenic forms of pulmonary fibrosis are associated with expression of mutant surfactant protein C (SFTPC). The commonest pathogenic mutant, I73T, mislocalises to the alveolar epithelial cell plasma membrane and displays a toxic gain of function. Because the mechanisms explaining the link between this mutant and IPF are incompletely understood, we sought to interrogate SFTPC trafficking in health and disease to understand the functional significance of SFTPC-I73T relocalisation.

methodsWe performed mechanistic analysis of SFTPC trafficking in a cell model that reproduces the

resultsWe show that wild-type SFTPC takes an unexpected indirect trafficking route

conclusionThese data show for the first time that all SFTPC transits the cell surface during normal trafficking, and the I73T mutation accumulates at the cell surface through both retarded trafficking and active recycling. This understanding of normal SFTPC trafficking and how the I73T mutant disturbs it provides novel insight into SFTPC biology in health and disease, and in the contribution of the SFTPC mutant to IPF development.

Indexed as

Idiopathic Pulmonary FibrosisAlveolar Epithelial CellsHumansMutationPulmonary Surfactant-Associated Protein CSurface-Active AgentsPulmonary Surfactant-Associated Protein CSFTPC protein, humanSurface-Active Agents

Identifiers

PMID34049951
PMCPMC8792467
OpenAlexW3165111814

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.