Evidence map›Paper›PMID 21283708›Full record

ArticlePloS one2011

Specific thiazolidinediones inhibit ovarian cancer cell line proliferation and cause cell cycle arrest in a PPARγ independent manner.

Linah Al-Alem, R Chase Southard, Michael W Kilgore, Thomas E Curry

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 1 pooled it
2.8field-weighted citation impact, top 9% 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

25 citing papers in PubMed, 1 synthesis or guideline pooled it, 53 citations in OpenAlex.

  1. Leptin signaling in breast cancer and its crosstalk with peroxisome proliferator-activated receptors α and γ.Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 2023
    Pooled it
  2. Subcellular Stress Markers in Epithelial Ovarian Cancer.International journal of molecular sciences · 2025
    Review
  3. Review
  4. Article
  5. Review
  6. Article
  7. Dual function of activated PPARγ by ligands on tumor growth and immunotherapy.Medical oncology (Northwood, London, England) · 2024
    Review
  8. Article
  9. Article
  10. Inhibition of PI3K Signaling Intensified the Antileukemic Effects of Pioglitazone: New Insight into the Application of PPARγ Stimulators in Acute Lymphoblastic Leukemia.Indian journal of hematology & blood transfusion : an official journal of Indian Society of Hematology and Blood Transfusion · 2023
    Article
  11. Review
  12. Article
  13. Review
  14. Article
  15. Review
  16. In vitro and in vivo cytotoxicity of troglitazone in pancreatic cancer.Journal of experimental & clinical cancer research : CR · 2017
    Article
  17. Article
  18. Effects of PPARγ agonistrosiglitazone on human retinoblastoma cell in vitro and in vivo.International journal of clinical and experimental pathology · 2015
    Article
  19. Review
  20. Article
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

4 authors at 1 institution in 1 country.

Linah Al-AlemDepartment of Molecular and Biomedical Pharmacology, University of Kentucky College of Medicine, Lexington, Kentucky, United States of America.
R Chase Southard
Michael W Kilgore
Thomas E Curry
University of Kentucky · US

Funding

PROTECTIVE ACTIONS OF ESTRADIOL/SERMS ON BRAIN/HIVP20RR015592 · NCRR · UNIVERSITY OF KENTUCKY · PI KELLY, THOMAS J. · 2000 to 2009
$18.2M
The MMP system in human ovulation: localization, regulation, and functionR01HD057446 · NICHD · UNIVERSITY OF KENTUCKY · PI CURRY, THOMAS E · 2009 to 2013
$1.4M
Transcriptional Control of Breast Cancer Through PPARgR01CA095609 · NCI · UNIVERSITY OF KENTUCKY · PI KILGORE, MICHAEL · 2004 to 2007
$911k
NCI NIH HHS CA95609NCI NIH HHS R01 CA095609NCRR NIH HHS P20 RR015592NCRR NIH HHS RR15592NICHD NIH HHS HD057446NICHD NIH HHS R01 HD057446
6 · The paper itself

Abstract

backgroundPeroxisome Proliferator Activated Receptor gamma (PPARγ) agonists, such as the thiazolinediones (TZDs), have been studied for their potential use as cancer therapeutic agents. We investigated the effect of four TZDs--Rosiglitazone (Rosi), Ciglitazone (CGZ), Troglitazone (TGZ), and Pioglitazone (Pio)--on ovarian cancer cell proliferation, PPARγ expression and PPAR luciferase reporter activity. We explored whether TZDs act in a PPARγ dependent or independent manner by utilizing molecular approaches to inhibit or overexpress PPARγ activity. PRINCIPAL

findingsTreatment with CGZ or TGZ for 24 hours decreased proliferation in three ovarian cancer cell lines, Ovcar3, CaOv3, and Skov3, whereas Rosi and Pio had no effect. This decrease in Ovcar3 cell proliferation was due to a higher fraction of cells in the G(0)/G(1) stage of the cell cycle. CGZ and TGZ treatment increased apoptosis after 4 hours of treatment but not after 8 or 12 hours. Treatment with TGZ or CGZ increased PPARγ mRNA expression in Ovcar3 cells; however, protein levels were unchanged. Surprisingly, luciferase promoter assays revealed that none of the TZDs increased PPARγ activity. Overexpression of wild type PPARγ increased reporter activity. This was further augmented by TGZ, Rosi, and Pio indicating that these cells have the endogenous capacity to mediate PPARγ transactivation. To determine whether PPARγ mediates the TZD-induced decrease in proliferation, cells were treated with CGZ or TGZ in the absence or presence of a dominant negative (DN) or wild type overexpression PPARγ construct. Neither vector changed the TZD-mediated cell proliferation suggesting this effect of TZDs on ovarian cancer cells may be PPARγ independent.

conclusionsCGZ and TGZ cause a decrease in ovarian cancer cell proliferation that is PPARγ independent. This concept is supported by the finding that a DN or overexpression of the wild type PPARγ did not affect the changes in cell proliferation and cell cycle.

Indexed as

Cell CycleCell Line, TumorCell ProliferationChromansFemaleGene ExpressionHumansOvarian NeoplasmsPioglitazonePPAR gammaRosiglitazoneThiazolidinedionesTroglitazoneChromansciglitazonePioglitazonePPAR gammaRosiglitazoneThiazolidinedionesTroglitazone

Identifiers

PMID21283708
PMCPMC3025024
OpenAlexW2010335405

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.