Evidence map›Paper›PMID 26297485›Full record

ArticleJournal of experimental & clinical cancer research : CR2015

The beneficial effect of Zinc(II) on low-dose chemotherapeutic sensitivity involves p53 activation in wild-type p53-carrying colorectal cancer cells.

Alessia Garufi, Valentina Ubertini, Francesca Mancini, Valerio D'Orazi, Silvia Baldari, Fabiola Moretti, Gianluca Bossi, Gabriella D'Orazi

Open access · goldAbstract read
In one paragraph

Article in Journal of experimental & clinical cancer research : CR, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
1.7field-weighted citation impact, top 14% 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

27 citing papers in PubMed, 41 citations in OpenAlex.

  1. Article
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  4. Zinc, copper, copper-to-zinc ratio, and other biometals in blood serum and tumor tissue of patients with colorectal cancer.Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2025
    Article
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  9. Review
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  14. Article
  15. Nephroprotective Effect ofBiomolecules · 2020
    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

8 authors at 5 institutions in 2 countries.

Alessia GarufiDepartment of Medical, Oral and Biotechnological Sciences, University "G. d'Annunzio", 66013, Chieti, Italy. alessiagarufi@yahoo.it.
Valentina UbertiniTranslational Research Department, Regina Elena National Cancer Institute, 00158, Rome, Italy. ubertini@ifo.it.
Francesca ManciniInstitute of Cell Biology and Neurobiology, National Research Council of Italy (CNR), Roma, Italy. francesca.mancini@cnr.it.
Valerio D'OraziDepartment of Surgical Sciences, Sapienza University, 00100, Rome, Italy. info@valeriodorazi.com.
Silvia BaldariDepartment of Medical, Oral and Biotechnological Sciences, University "G. d'Annunzio", 66013, Chieti, Italy. silvia.baldari@yahoo.it.
Fabiola MorettiInstitute of Cell Biology and Neurobiology, National Research Council of Italy (CNR), Roma, Italy. fabiola.moretti@cnr.it.
Gianluca BossiLaboratory of Medical Physics and Expert Systems, Regina Elena National Cancer Institute, 00158, Rome, Italy. bossi@ifo.it.
Gabriella D'OraziDepartment of Medical, Oral and Biotechnological Sciences, University "G. d'Annunzio", 66013, Chieti, Italy. gdorazi@unich.it.
University of Chieti-Pescara · ITInstitute of Cell Biology and Neurobiology · ITExpert System (Italy) · ITNational Cancer Institute · MYSapienza University of Rome · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundActivation of wild-type p53 in response to genotoxic stress occurs through different mechanisms including protein conformation, posttranslational modifications, and nuclear localization, leading to DNA binding to sequence-specific promoters. Zinc ion plays a crucial role in stabilizing p53/DNA binding to induce canonical target genes. Mutant p53 proteins undergo protein misfolding that can be counteracted by zinc. However, whether zinc supplementation might have a beneficial antitumor effect in wild-type p53-carrying cells in combination with drugs, has not been addressed so far.

methodsIn this study we compared the effect of two antitumor treatments: on the one hand wild-type p53-carrying colon cancer cells were treated with low and high doses of chemotherapeutic agent Adriamycin and, on the other hand, Adriamycin was used in combination with ZnCl2. Biochemical and molecular analyses were applied to evaluate p53 activity and biological outcomes in this setting. Finally, the effect of the different combination treatments were applied to assess tumor growth in vivo in tumor xenografts.

resultsWe found that low-dose Adriamycin did not induce p53 activation in wtp53-carrying colon cancer cells, unless in combination with ZnCl2. Mechanistically, ZnCl2 was a key determinant in inducing wtp53/DNA binding and transactivation of target genes in response to low-dose Adriamycin that used alone did not achieve such effects. Finally, in vivo studies, in a model of wtp53 colon cancer xenograft, show that low-dose Adriamycin did not induce tumor regression unless in combination with ZnCl2 that activated endogenous wtp53.

conclusionsThese results provide evidence that ZnCl2 might be a valuable adjuvant in chemotherapeutic regimens of colorectal cancer harboring wild-type p53, able to both activate p53 and reduce the amount of drugs for antitumor purposes.

Indexed as

AnimalsAntineoplastic AgentsCell SurvivalChloridesColorectal NeoplasmsDoxorubicinDrug Resistance, NeoplasmHCT116 CellsHumansMice, NudeTumor BurdenTumor Suppressor Protein p53Xenograft Model Antitumor AssaysZinc CompoundsAntineoplastic AgentsChloridesDoxorubicinTP53 protein, humanTumor Suppressor Protein p53zinc chlorideZinc Compounds

Identifiers

PMID26297485
PMCPMC4546314
OpenAlexW1890805542

What OpenQuestion holds

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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.