Open Access

Aberrant expression of glycogen synthase kinase‑3β in human breast and head and neck cancer

  • Authors:
    • Andrey V. Ugolkov
    • Maria Matsangou
    • Timothy J. Taxter
    • Thomas V. O'Halloran
    • Vincent L. Cryns
    • Francis J. Giles
    • Andrew P. Mazar
  • View Affiliations

  • Published online on: September 21, 2018     https://doi.org/10.3892/ol.2018.9483
  • Pages: 6437-6444
  • Copyright: © Ugolkov et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Glycogen Synthase Kinase‑3β (GSK‑3β), a serine/threonine protein kinase, has been implicated as a potential therapeutic target in human cancer. The objective of the present study was to evaluate aberrant expression of GSK‑3β as a potential biomarker in human breast and head and neck cancers. Nuclear/cytosolic fractionation, immunoblotting and immunohistochemical staining was used to study the expression of GSK‑3β in human breast and head and neck cancer. Aberrant nuclear accumulation of GSK‑3β in five human breast cancer cell lines was demonstrated and in 89/128 (70%) human breast carcinomas, whereas no detectable expression of GSK‑3β was found in benign breast tissue. Nuclear GSK‑3β expression was associated with HER‑2 positive tumors (P=0.02) and non‑triple negative breast carcinomas (P=0.0001), although nuclear GSK‑3β was observed in some samples across all breast cancer subtypes. Aberrant nuclear expression of GSK‑3β was found in 11/15 (73%) squamous cell head and neck carcinomas, whereas weak or no detectable expression of GSK‑3β was found in benign salivary gland and other benign head and neck tissues. These results support the hypothesis that aberrant nuclear GSK‑3β may represent a potential target for the clinical treatment of human breast and squamous cell carcinoma.
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November-2018
Volume 16 Issue 5

Print ISSN: 1792-1074
Online ISSN:1792-1082

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Spandidos Publications style
Ugolkov AV, Matsangou M, Taxter TJ, O'Halloran TV, Cryns VL, Giles FJ and Mazar AP: Aberrant expression of glycogen synthase kinase‑3β in human breast and head and neck cancer. Oncol Lett 16: 6437-6444, 2018
APA
Ugolkov, A.V., Matsangou, M., Taxter, T.J., O'Halloran, T.V., Cryns, V.L., Giles, F.J., & Mazar, A.P. (2018). Aberrant expression of glycogen synthase kinase‑3β in human breast and head and neck cancer. Oncology Letters, 16, 6437-6444. https://doi.org/10.3892/ol.2018.9483
MLA
Ugolkov, A. V., Matsangou, M., Taxter, T. J., O'Halloran, T. V., Cryns, V. L., Giles, F. J., Mazar, A. P."Aberrant expression of glycogen synthase kinase‑3β in human breast and head and neck cancer". Oncology Letters 16.5 (2018): 6437-6444.
Chicago
Ugolkov, A. V., Matsangou, M., Taxter, T. J., O'Halloran, T. V., Cryns, V. L., Giles, F. J., Mazar, A. P."Aberrant expression of glycogen synthase kinase‑3β in human breast and head and neck cancer". Oncology Letters 16, no. 5 (2018): 6437-6444. https://doi.org/10.3892/ol.2018.9483