[Corrigendum] Potassium increases the antitumor effects of ascorbic acid in breast cancer cell lines <em>in vitro</em>

Frajese,Giovanni Vanni; Benvenuto,Monica; Fantini,Massimo; Ambrosin,Elena; Sacchetti,Pamela; Masuelli,Laura; Giganti,Maria Gabriella; Modesti,Andrea; Bei,Roberto

doi:10.3892/ol.2026.15494

April-2026 Volume 31 Issue 4

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April-2026 Volume 31 Issue 4

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Correction Open Access

[Corrigendum] Potassium increases the antitumor effects of ascorbic acid in breast cancer cell lines in vitro

Authors:
- Giovanni Vanni Frajese
- Monica Benvenuto
- Massimo Fantini
- Elena Ambrosin
- Pamela Sacchetti
- Laura Masuelli
- Maria Gabriella Giganti
- Andrea Modesti
- Roberto Bei
View Affiliations / Copyright

Affiliations: Department of Sports Science, Human and Health, University of Rome ‘Foro Italico’, Rome I-00135, Italy, Department of Clinical Sciences and Translational Medicine, University of Rome ‘Tor Vergata’, Rome I-00133, Italy, Department of Experimental Medicine, University of Rome ‘Sapienza’, Rome I-00185, Italy

Copyright: © Frajese et al. This is an open access article distributed under the terms of Creative Commons Attribution License [CC BY 4.0].
Article Number: 141
|
Published online on: February 17, 2026

https://doi.org/10.3892/ol.2026.15494
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Oncol Lett 11: [Related article:] 4224–4234, 2016; DOI: 10.3892/ol.2016.4506

Following the publication of the above article, an interested reader drew to the authors’ attention that the ERK blots shown for the MCF-7 and MDA-MB-231 cell lines in Fig. 3 on p. 4231 were unexpectedly similar, given that the blots were intended to show the results from experiments performed on two different cell lines. Upon asking the authors for an explanation, they were able to provide the raw data underlying the figure, and they realized that the blots correctly shown for the MDA-MD-231 cell line had inadvertently been copied across for the MCF-7 cell line. The corrected version of Fig. 3, now showing the correct ERK blots for the MCF-7 cell line, is shown below. The authors regret that this error occurred during the assembly of Fig. 3, although this did not grossly affect either the results or the conclusions reported in this article. All the authors agree with the publication of this Corrigendum, and thank the Editor of Oncology Letters for granting them the opportunity to publish this; furthermore. they apologize to the readership for any inconvenience caused.

Figure 3.

Effect of treatment with A and K, alone or in combination, on pro-survival signaling proteins. Western blotting was performed on MCF-7 and MDA-MB-231 cells treated with A or K, alone or in combination, for 24 h. The levels of phosphorylated ERK1/ERK2 were compared with the total protein levels of ERK, and the ratio values are reported. Quantitative densitometric analysis of the expression levels of nuclear factor-κB, compared with the levels of actin, is provided. The faint higher molecular weight product observed with the NF-κB antibody in the MDA-MB-231 cells may be due to non-specific reactions in this cell line. CTRL, culture medium; K, potassium; A, ascorbic acid; ERK, extracellular signal-regulated kinase; p, phosphorylated; NF-κB, nuclear factor-κB.

Journals

International Journal of Molecular Medicine

International Journal of Oncology

Molecular Medicine Reports

Oncology Reports

Experimental and Therapeutic Medicine

Oncology Letters

Biomedical Reports

Molecular and Clinical Oncology

World Academy of Sciences Journal

International Journal of Functional Nutrition

International Journal of Epigenetics

Medicine International

[Corrigendum] Potassium increases the antitumor effects of ascorbic acid in breast cancer cell lines in vitro

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