Evidence map›Paper›PMID 33173147›Full record

ArticleScientific reports2020

Pulmonary surfactant inhibition of nanoparticle uptake by alveolar epithelial cells.

M Radiom, M Sarkis, O Brookes, E K Oikonomou, A Baeza-Squiban, J-F Berret

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
0.1field-weighted citation impact, top 45% 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

31 citing papers in PubMed, 1 citations in OpenAlex.

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  14. Nanomedicine Innovations for Lung Cancer Diagnosis and Therapy.ACS applied materials & interfaces · 2025
    Review
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  16. The Application of Engineered Nanomaterials in Perinatal Therapeutics.Small (Weinheim an der Bergstrasse, Germany) · 2024
    Review
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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

6 authors at 4 institutions in 1 country.

M RadiomUMR CNRS 7057, Laboratoire Matière Et Systèmes Complexes, Université de Paris, Paris, France. milad.radiom@hest.ethz.ch.
M SarkisUMR CNRS 7057, Laboratoire Matière Et Systèmes Complexes, Université de Paris, Paris, France.
O BrookesUMR CNRS 8251, Unité de Biologie Fonctionnelle et Adaptative, Université de Paris, Paris, France.
E K OikonomouUMR CNRS 7057, Laboratoire Matière Et Systèmes Complexes, Université de Paris, Paris, France.
A Baeza-SquibanUMR CNRS 8251, Unité de Biologie Fonctionnelle et Adaptative, Université de Paris, Paris, France.
J-F BerretUMR CNRS 7057, Laboratoire Matière Et Systèmes Complexes, Université de Paris, Paris, France. jean-francois.berret@u-paris.fr.
Centre National de la Recherche Scientifique · FRLaboratoire Matière et Systèmes Complexes · FRUnit of Functional and Adaptive Biology · FRUniversité Paris Cité · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Pulmonary surfactant forms a sub-micrometer thick fluid layer that covers the surface of alveolar lumen and inhaled nanoparticles therefore come in to contact with surfactant prior to any interaction with epithelial cells. We investigate the role of the surfactant as a protective physical barrier by modeling the interactions using silica-Curosurf-alveolar epithelial cell system in vitro. Electron microscopy displays that the vesicles are preserved in the presence of nanoparticles while nanoparticle-lipid interaction leads to formation of mixed aggregates. Fluorescence microscopy reveals that the surfactant decreases the uptake of nanoparticles by up to two orders of magnitude in two models of alveolar epithelial cells, A549 and NCI-H441, irrespective of immersed culture on glass or air-liquid interface culture on transwell. Confocal microscopy corroborates the results by showing nanoparticle-lipid colocalization interacting with the cells. Our work thus supports the idea that pulmonary surfactant plays a protective role against inhaled nanoparticles. The effect of surfactant should therefore be considered in predictive assessment of nanoparticle toxicity or drug nanocarrier uptake. Models based on the one presented in this work may be used for preclinical tests with engineered nanoparticles.

Indexed as

A549 CellsAlveolar Epithelial CellsCell Line, TumorHumansMicroscopy, ConfocalMicroscopy, FluorescenceNanoparticlesPulmonary AlveoliPulmonary SurfactantsPulmonary Surfactants

Identifiers

PMID33173147
PMCPMC7655959
OpenAlexW3094573143

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.