Evidence map›Paper›PMID 20811155›Full record

ArticleThe Journal of clinical investigation2010

Cytoplasmic p21 expression levels determine cisplatin resistance in human testicular cancer.

Roelof Koster, Alessandra di Pietro, Hetty Timmer-Bosscha, Johan H Gibcus, Anke van den Berg, Albert J Suurmeijer, Rainer Bischoff, Jourik A Gietema, Steven de Jong

Open access · greenAbstract read
In one paragraph

Article in The Journal of clinical investigation, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 116 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
116citing papers in PubMed, 2 pooled it
16.0field-weighted citation impact, top 1% 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

116 citing papers in PubMed, 2 syntheses or guidelines pooled it, 232 citations in OpenAlex.

  1. Pooled it
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  9. Tasquinimod promotes the sensitivity of ovarian cancer cells to cisplatin by down-regulating the HDAC4/p21 pathway.The Korean journal of physiology & pharmacology : official journal of the Korean Physiological Society and the Korean Society of Pharmacology · 2025
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  13. Folate Receptor Alpha-A Novel Approach to Cancer Therapy.International journal of molecular sciences · 2024
    Review
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56 more citing papers are in PubMed but not listed here.

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

9 authors at 2 institutions in 1 country.

Roelof KosterDepartment of Medical Oncology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands.
Alessandra di Pietro
Hetty Timmer-Bosscha
Johan H Gibcus
Anke van den Berg
Albert J Suurmeijer
Rainer Bischoff
Jourik A Gietema
Steven de Jong
University of Groningen · NLUniversity Medical Center Groningen · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Platinum-based chemotherapies such as cisplatin are used as first-line treatment for many cancers. Although there is often a high initial responsiveness, the majority of patients eventually relapse with platinum-resistant disease. For example, a subset of testicular cancer patients still die even though testicular cancer is considered a paradigm of cisplatin-sensitive solid tumors, but the mechanisms of chemoresistance remain elusive. Here, we have shown that one key determinant of cisplatin-resistance in testicular embryonal carcinoma (EC) is high cytoplasmic expression of the cyclin-dependent kinase (CDK) inhibitor p21. The EC component of the majority of refractory testicular cancer patients exhibited high cytoplasmic p21 expression, which protected EC cell lines against cisplatin-induced apoptosis via CDK2 inhibition. Localization of p21 in the cytoplasm was critical for cisplatin resistance, since relocalization of p21 to the nucleus by Akt inhibition sensitized EC cell lines to cisplatin. We also demonstrated in EC cell lines and human tumor tissue that high cytoplasmic p21 expression and cisplatin resistance of EC were inversely associated with the expression of Oct4 and miR-106b seed family members. Thus, targeting cytoplasmic p21, including by modulation of the Oct4/miR-106b/p21 pathway, may offer new strategies for the treatment of chemoresistant testicular and other types of cancer.

Indexed as

Antineoplastic AgentsApoptosisCell Line, TumorChromonesCisplatinCyclin-Dependent Kinase 2Cyclin-Dependent Kinase Inhibitor p21CytoplasmDrug Resistance, NeoplasmHumansMaleMicroRNAsMorpholinesOctamer Transcription Factor-3Proto-Oncogene Proteins c-aktTesticular Neoplasms2-(4-morpholinyl)-8-phenyl-4H-1-benzopyran-4-oneAntineoplastic AgentsCDK2 protein, humanCDKN1A protein, humanChromonesCisplatinCyclin-Dependent Kinase 2Cyclin-Dependent Kinase Inhibitor p21MicroRNAsMIRN106 microRNA, humanMorpholinesOctamer Transcription Factor-3POU5F1 protein, humanProto-Oncogene Proteins c-akt

Identifiers

PMID20811155
PMCPMC2947220
OpenAlexW2155147356

What Socratic 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 Socratic graph.