Evidence map›Paper›PMID 33758229›Full record

ArticleScientific reports2021

Standardization of esophageal adenocarcinoma in vitro model and its applicability for model drug testing.

Larisa Tratnjek, Nadica Sibinovska, Slavko Kralj, Darko Makovec, Katja Kristan, Mateja Erdani Kreft

Abstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–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

4 citing papers in PubMed.

  1. Review
  2. Article
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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.

Larisa TratnjekFaculty of Medicine, Institute of Cell Biology, University of Ljubljana, Vrazov trg 2, 1000, Ljubljana, Slovenia.
Nadica SibinovskaFaculty of Pharmacy, Chair of Biopharmaceutics and Pharmacokinetics, University of Ljubljana, Aškerčeva c. 7, 1000, Ljubljana, Slovenia.
Slavko KraljDepartment for Materials Synthesis, Jožef Stefan Institute, Jamova 39, 1000, Ljubljana, Slovenia.
Darko MakovecDepartment for Materials Synthesis, Jožef Stefan Institute, Jamova 39, 1000, Ljubljana, Slovenia.
Katja KristanLek Pharmaceuticals, d.d., Sandoz Development Center Slovenia, Verovškova 57, 1526, Ljubljana, Slovenia. katja.kristan@sandoz.com.
Mateja Erdani KreftFaculty of Medicine, Institute of Cell Biology, University of Ljubljana, Vrazov trg 2, 1000, Ljubljana, Slovenia. mateja.erdani@mf.uni-lj.si.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

FLO-1 cell line represents an important tool in esophageal adenocarcinoma (EAC) research as a verified and authentic cell line to study the disease pathophysiology and antitumor drug screenings. Since in vitro characteristics of cells depend on the microenvironment and culturing conditions, we performed a thorough characterization of the FLO-1 cell line under different culturing conditions with the aim of (1) examining the effect of serum-free growth medium and air-liquid interface (A-L) culturing, which better reflect physiological conditions in vivo and (2) investigating the differentiation potential of FLO-1 cells to mimic the properties of the in vivo esophageal epithelium. Our study shows that the composition of the media influenced the morphological, ultrastructural and molecular characteristics of FLO-1 cells, such as the expression of junctional proteins. Importantly, FLO-1 cells formed spheres at the A-L interface, recapitulating key elements of tumors in the esophageal tube, i.e., direct contact with the gas phase and three-dimensional architecture. On the other hand, FLO-1 models exhibited high permeability to model drugs and zero permeability markers, and low transepithelial resistance, and therefore poorly mimicked normal esophageal epithelium. In conclusion, the identified effect of culture conditions on the characteristics of FLO-1 cells should be considered for standardization, data reproducibility and validity of the in vitro EAC model. Moreover, the sphere-forming ability of FLO-1 cells at the A-L interface should be considered in EAC tumor biology and anticancer drug studies as a reliable and straightforward model with the potential to increase the predictive efficiency of the current in vitro approaches.

Indexed as

Cell Culture TechniquesAdenocarcinomaAntineoplastic AgentsCell Line, TumorCell ProliferationCell SurvivalCulture MediaDrug DiscoveryDrug Screening Assays, AntitumorEsophageal NeoplasmsHumansImmunohistochemistryIntercellular JunctionsAntineoplastic AgentsCulture Media

Identifiers

PMID33758229
PMCPMC7988140

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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.