Evidence map›Paper›PMID 25216521›Full record

ArticleOncotarget2014

The side population of ovarian cancer cells defines a heterogeneous compartment exhibiting stem cell characteristics.

Maximilian Boesch, Alain G Zeimet, Daniel Reimer, Stefan Schmidt, Guenther Gastl, Walther Parson, Franziska Spoeck, Jiri Hatina, Dominik Wolf, Sieghart Sopper

Open access · diamondAbstract read
In one paragraph

Article in Oncotarget, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 60 papers.

0numbers the graph read from it
0cells of the map it votes in
60citing papers in PubMed
5.1field-weighted citation impact, top 3% 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

60 citing papers in PubMed, 91 citations in OpenAlex.

  1. Review
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  5. Reaction Behavior of [1,3-Diethyl-4,5-diphenyl-1Journal of medicinal chemistry · 2023
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  6. Re-Sensitizing Cancer Stem Cells to Conventional Chemotherapy Agents.International journal of molecular sciences · 2023
    Review
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  12. OMIP 077: Definition of all principal human leukocyte populations using a broadly applicable 14-color panel.Cytometry. Part A : the journal of the International Society for Analytical Cytology · 2022
    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

10 authors at 4 institutions in 3 countries.

Maximilian BoeschInternal Medicine V, Innsbruck Medical University, Innsbruck, Austria. Tyrolean Cancer Research Institute, Innsbruck, Austria.
Alain G ZeimetDepartment of Gynecology and Obstetrics, Innsbruck Medical University, Innsbruck, Austria.
Daniel ReimerDepartment of Gynecology and Obstetrics, Innsbruck Medical University, Innsbruck, Austria.
Stefan SchmidtInternal Medicine V, Innsbruck Medical University, Innsbruck, Austria.
Guenther GastlInternal Medicine V, Innsbruck Medical University, Innsbruck, Austria.
Walther ParsonInstitute of Legal Medicine, Innsbruck Medical University, Innsbruck, Austria.
Franziska SpoeckInternal Medicine V, Innsbruck Medical University, Innsbruck, Austria. Tyrolean Cancer Research Institute, Innsbruck, Austria.
Jiri HatinaDepartment of Biology and Biomedical Centre, Faculty of Medicine Pilsen, Charles University Prague, Pilsen, Czech Republic.
Dominik WolfInternal Medicine V, Innsbruck Medical University, Innsbruck, Austria. Medical Clinic III, Oncology, Hematology and Rheumatology, University Clinic Bonn (UKB), Bonn, Germany. These authors contributed equally to this work.
Sieghart SopperInternal Medicine V, Innsbruck Medical University, Innsbruck, Austria. Tyrolean Cancer Research Institute, Innsbruck, Austria. These authors contributed equally to this work.
Innsbruck Medical University · ATTyrolean Cancer Research Institute · ATCharles University · CZUniversity Hospital Bonn · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cancer stem cells (CSC) are believed to be involved in tumor evasion of classical antitumor therapies and have thus become an attractive target for further improvement of anticancer strategies. However, the existence and identity of CSC are still a matter of controversy. In a systematic screen of 13 ovarian cancer cell lines we show that cells with stem cell properties are reliably detectable as a minor population, characterized by ABC transporter expression resulting in the side population (SP) phenotype. In different cell lines, either ABCG2 or ABCB1 was found to be responsible for this effect. Purified SP cells featured virtually all characteristics of bona fide CSC, including clonogenicity, asymmetric division and high tumorigenicity in vivo. Using in-depth phenotyping by multicolor flow cytometry, we found that among the investigated ovarian cancer cell lines the SP compartment exhibits tremendous heterogeneity and is composed of multiple phenotypically distinct subpopulations. Thus, our study confirms previous results showing that CSC are contained within the SP. However, the exact identity of the CSC is still disguised by the high complexity of the CSC-containing compartment. Further functional studies are needed to determine whether a single cellular subset can unambiguously be defined as CSC or whether multiple stem cell-like cells with different properties coexist. Moreover, the observed heterogeneity may reflect a high level of plasticity and likely influences tumor progression, escape from immune-surveillance and development of resistance to anticancer therapies and should therefore be considered in the development of new treatment strategies.

Indexed as

AnimalsCell Line, TumorFemaleHeterograftsHumansMiceMice, Inbred NODMice, SCIDNeoplastic Stem CellsOvarian NeoplasmsSide-Population Cells

Identifiers

PMID25216521
PMCPMC4196181
OpenAlexW1602048773

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.