Evidence map›Paper›PMID 20372076›Full record

ArticleCell cycle (Georgetown, Tex.)2010

p53 inactivation by MDM2 and MDMX negative feedback loops in testicular germ cell tumors.

Baozong Li, Qian Cheng, Zhenyu Li, Jiandong Chen

Open access · greenAbstract read
In one paragraph

Article in Cell cycle (Georgetown, Tex.), 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
4.7field-weighted citation impact, top 4% 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

37 citing papers in PubMed, 65 citations in OpenAlex.

  1. Review
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  8. Review
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  10. Review
  11. Review
  12. Article
  13. Negative auto-regulators trap p53 in their web.Journal of molecular cell biology · 2017
    Review
  14. Review
  15. Review
  16. Article
  17. Review
  18. Autoinhibition of MDMX by intramolecular p53 mimicry.Proceedings of the National Academy of Sciences of the United States of America · 2015
    Article
  19. The chemosensitivity of testicular germ cell tumors.Cellular oncology (Dordrecht, Netherlands) · 2014
    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 2 institutions in 1 country.

Baozong LiMolecular Oncology Department, Moffitt Cancer Center, Tampa, FL, USA.
Qian Cheng
Zhenyu Li
Jiandong Chen
Moffitt Cancer Center · USMolecular Oncology (United States) · US

Funding

Targeting Signal Transduction Pathways for Cancer Drug DiscoveryP01CA118210 · NCI · H. LEE MOFFITT CANCER CTR & RES INST · PI LAWRENCE, HARSHANI R · 2007 to 2011
$9.8M
Function and Regulation of MDMXR01CA109636 · NCI · H. LEE MOFFITT CANCER CTR &RES INST · PI CHEN, JIANDONG · 2004 to 2014
$2.8M
NCI NIH HHS CA109636NCI NIH HHS CA118210NCI NIH HHS P01 CA118210NCI NIH HHS R01 CA109636
6 · The paper itself

Abstract

Testicular germ cell tumors (TGCT) are unique in their excellent response to DNA-damaging chemotherapy. Mutation of p53 is rare in both untreated and relapsed TGCTs, suggesting that p53 fails to respond effectively against malignant transformation in germ cells. Previous studies implicated the presence of a poorly defined TGCT-specific mechanism of p53 inactivation. Here we show that disruption of p53-MDM2 binding using the MDM2-specific inhibitor Nutlin activates p53 in TGCT cells and is sufficient to induce strong apoptosis. Knockdown of MDMX cooperates with Nutlin to activate p53. Surprisingly, we found that p53 activation induced a two-fold increase in MDMX mRNA and protein expression in TGCT cells. A p53-responsive promoter is identified in MDMX intron 1 that contains a functional p53-binding site, suggesting that MDMX also functions as a negative feedback regulator of p53 in a cell line-dependent fashion. These findings suggest that MDM2 and MDMX are responsible for the functional inactivation of p53 in TGCT. Furthermore, TGCT cells are unique in having a strong apoptosis response to p53. Direct activation of p53 by targeting MDM2 and MDMX may provide a backup approach for the treatment of TGCTs resistant to DNA-damaging drugs.

Indexed as

Blotting, WesternCell Cycle ProteinsCell Line, TumorChromatin ImmunoprecipitationHumansMaleNeoplasms, Germ Cell and EmbryonalNuclear ProteinsPolymerase Chain ReactionProto-Oncogene ProteinsProto-Oncogene Proteins c-mdm2RNA InterferenceTesticular NeoplasmsTumor Suppressor Protein p53Cell Cycle ProteinsMDM2 protein, humanMDM4 protein, humanNuclear ProteinsProto-Oncogene ProteinsProto-Oncogene Proteins c-mdm2Tumor Suppressor Protein p53

Identifiers

PMID20372076
PMCPMC3008305
OpenAlexW1985469910

What OpenQuestion holds

Textmetadata
LicenceTDM
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.