Evidence map›Paper›PMID 22669515›Full record

ArticleArchives of toxicology2013

Interactions of silica nanoparticles with lung epithelial cells and the association to flotillins.

Jennifer Kasper, Maria I Hermanns, Christoph Bantz, Olga Koshkina, Thomas Lang, Michael Maskos, Christine Pohl, Ronald E Unger, C James Kirkpatrick

Abstract readComparative Study
In one paragraph

Article in Archives of toxicology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
–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, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Nanotechnology-Assisted Cell Tracking.Nanomaterials (Basel, Switzerland) · 2022
    Review
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  18. Endocytosis of gene delivery vectors: from clathrin-dependent to lipid raft-mediated endocytosis.Molecular therapy : the journal of the American Society of Gene Therapy · 2013
    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

9 authors.

Jennifer KasperInstitute of Pathology, University Medical Centre, Mainz, Germany. kasperj@uni-mainz.de
Maria I Hermanns
Christoph Bantz
Olga Koshkina
Thomas Lang
Michael Maskos
Christine Pohl
Ronald E Unger
C James Kirkpatrick

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Amorphous silica nanoparticles (aSNPs) gain increasing popularity for industrial and therapeutic claims. The lung with its surface area of 100-140 m(2) displays an ideal target for therapeutic approaches, but it represents also a serious area of attack for harmful nanomaterials. The exact nature of the cytotoxic effects of NPs is still unknown. Furthermore, cellular pathways and the destiny of internalized NPs are still poorly understood. Therefore, we examined the cytotoxicity (MTS, LDH) and inflammatory responses (IL-8) for different-sized aSNPs (30, 70, 300 nm) on our lung epithelial cells line NCI H441 and endothelial cell line ISO-HAS-1. Additionally, colocalization studies have been conducted via immunofluorescence staining for flotillin-1- and flotillin-2-bearing endocytic vesicles. Subsequently, the relevance of flotillins concerning the viability of aSNP-exposed epithelial cells has been evaluated using flotillin-1/2 depleted cells (siRNA). This study reveals the relevance of the nanoparticle size regarding cytotoxicity (MTS, LDH) and inflammatory responses (IL-8), whereat the smaller the size of the nanoparticle is, the more harmful are the effects. All different aSNP sizes have been incorporated in flotillin-1- and flotillin-2-labelled vesicles in lung epithelial and endothelial cells, which display a marker for late endosomal or lysosomal structures and appear to exhibit a clathrin- or caveolae-independent mode of endocytosis. Flotillin-depleted H441 showed a clearly decreased uptake of aSNPs. Additionally, the viability of aSNP-exposed cells was reduced in these cells. These findings indicate a contribution of flotillins in as yet unknown (clathrin or caveolae-independent) endocytosis mechanisms and (or) endosomal storage.

Indexed as

Cell Line, TumorCell SurvivalDose-Response Relationship, DrugEndocytosisEndosomesEndothelial CellsEpithelial CellsHumansInflammation MediatorsInterleukin-8L-Lactate DehydrogenaseLungMembrane ProteinsNanoparticlesParticle SizeRNA InterferenceCXCL8 protein, humanflotillinsInflammation MediatorsInterleukin-8L-Lactate DehydrogenaseMembrane ProteinsSilicon Dioxide

Identifiers

PMID22669515
PMCPMC3663199

What OpenQuestion holds

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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.