Open Access

Zn(II)-curc targets p53 in thyroid cancer cells

  • Authors:
    • Alessia Garufi
    • Valerio D'Orazi
    • Alessandra Crispini
    • Gabriella D'Orazi
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  • Published online on: August 13, 2015     https://doi.org/10.3892/ijo.2015.3125
  • Pages: 1241-1248
  • Copyright: © Garufi et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

TP53 mutation is a common event in many cancers, including thyroid carcinoma. Defective p53 activity promotes cancer resistance to therapies and a more malignant phenotype, acquiring oncogenic functions. Rescuing the function of mutant p53 (mutp53) protein is an attractive anticancer therapeutic strategy. Zn(II)-curc is a novel small molecule that has been shown to target mutp53 protein in several cancer cells, but its effect in thyroid cancer cells remains unclear. Here, we investigated whether Zn(II)-curc could affect p53 in thyroid cancer cells with both p53 mutation (R273H) and wild-type p53. Zn(II)-curc induced mutp53H273 downregulation and reactivation of wild-type functions, such as binding to canonical target promoters and target gene transactivation. This latter effect was similar to that induced by PRIMA-1. In addition, Zn(II)-curc triggered p53 target gene expression in wild-type p53-carrying cells. In combination treatments, Zn(II)-curc enhanced the antitumor activity of chemotherapeutic drugs, in both mutant and wild-type-carrying cancer cells. Taken together, our data indicate that Zn(II)-curc promotes the reactivation of p53 in thyroid cancer cells, providing in vitro evidence for a potential therapeutic approach in thyroid cancers.
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October-2015
Volume 47 Issue 4

Print ISSN: 1019-6439
Online ISSN:1791-2423

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Spandidos Publications style
Garufi A, D'Orazi V, Crispini A and D'Orazi G: Zn(II)-curc targets p53 in thyroid cancer cells. Int J Oncol 47: 1241-1248, 2015.
APA
Garufi, A., D'Orazi, V., Crispini, A., & D'Orazi, G. (2015). Zn(II)-curc targets p53 in thyroid cancer cells. International Journal of Oncology, 47, 1241-1248. https://doi.org/10.3892/ijo.2015.3125
MLA
Garufi, A., D'Orazi, V., Crispini, A., D'Orazi, G."Zn(II)-curc targets p53 in thyroid cancer cells". International Journal of Oncology 47.4 (2015): 1241-1248.
Chicago
Garufi, A., D'Orazi, V., Crispini, A., D'Orazi, G."Zn(II)-curc targets p53 in thyroid cancer cells". International Journal of Oncology 47, no. 4 (2015): 1241-1248. https://doi.org/10.3892/ijo.2015.3125