Evidence map›Paper›PMID 27604426›Full record

ArticleLung2016

Methotrexate-Induced Epithelial-Mesenchymal Transition in the Alveolar Epithelial Cell Line A549.

Masashi Kawami, Rika Harabayashi, Mioka Miyamoto, Risako Harada, Ryoko Yumoto, Mikihisa Takano

Abstract read
PubMed Publisher
In one paragraph

Article in Lung, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
4.5field-weighted citation impact, top 5% 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

16 citing papers in PubMed, 39 citations in OpenAlex.

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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 1 institution in 1 country.

Masashi KawamiDepartment of Pharmaceutics and Therapeutics, Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8553, Japan.
Rika HarabayashiDepartment of Pharmaceutics and Therapeutics, Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8553, Japan.
Mioka MiyamotoDepartment of Pharmaceutics and Therapeutics, Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8553, Japan.
Risako HaradaDepartment of Pharmaceutics and Therapeutics, Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8553, Japan.
Ryoko YumotoDepartment of Pharmaceutics and Therapeutics, Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8553, Japan.
Mikihisa TakanoDepartment of Pharmaceutics and Therapeutics, Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8553, Japan. takanom@hiroshima-u.ac.jp.
Hiroshima University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeMethotrexate (MTX) therapy of certain cancers and rheumatoid arthritis often induces serious interstitial lung complications including pulmonary fibrosis. In this study, we investigated the epithelial-mesenchymal transition (EMT) induced by MTX and by transforming growth factor (TGF)-β1 in the human alveolar epithelial cell line A549 in order to develop new strategies for the prevention of EMT.

methodsFirst, we examined the effect of TGF-β1 and MTX on cell morphology and the expression of EMT-related mRNAs in A549 cells. Then, the effects of SB431542 (SB), a potent inhibitor of TGF-β receptor kinase, and a neutralizing antibody for TGF-β1 on the phenotypic changes of A549 cells induced by TGF-β1 and MTX were examined.

resultsAfter incubation with TGF-β1 and MTX, the mRNA expression of epithelial markers such as cytokeratin 19 was reduced, while that of mesenchymal markers such as α-smooth muscle actin was increased. SB suppressed the development of morphological changes and partially rescued alterations in mRNA expression of EMT markers induced by MTX. In addition, the enhancement of SMAD2 phosphorylation by MTX was also prevented by SB. On the other hand, EMT-related changes induced by MTX were not affected by a neutralizing antibody for TGF-β1.

conclusionWe have demonstrated that phenotypic changes of A549 cells induced by MTX are partly mediated by a TGF-β1-related intracellular signaling pathway, although TGF-β1 itself is not directly involved in this process.

Indexed as

A549 CellsActinsAntibodies, NeutralizingAntimetabolites, AntineoplasticBenzamidesCollagen Type ICollagen Type I, alpha 1 ChainConnective Tissue Growth FactorDioxolesEpithelial-Mesenchymal TransitionGene ExpressionHumansKeratin-19MethotrexatePhenotypePhosphorylation4-(5-benzo(1,3)dioxol-5-yl-4-pyridin-2-yl-1H-imidazol-2-yl)benzamideACTA2 protein, humanActinsAntibodies, NeutralizingAntimetabolites, AntineoplasticBenzamidesCCN2 protein, humanCollagen Type ICollagen Type I, alpha 1 ChainConnective Tissue Growth FactorDioxolesKeratin-19MethotrexateReceptors, Transforming Growth Factor betaRNA, MessengerSmad2 ProteinSMAD2 protein, humanTransforming Growth Factor beta1VimentinAlveolar epithelial cellsEpithelial–mesenchymal transitionMethotrexateSB431542SMAD2TGF-β1

Identifiers

PMID27604426
OpenAlexW2512875012

What OpenQuestion holds

Textmetadata
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.