Polo‑like kinase 1 selective inhibitor BI2536 (dihydropteridinone) disrupts centrosome homeostasis via ATM‑ERK cascade in adrenocortical carcinoma

Lin,Ruei-Ci; Chao,Yu-Ying; Lien,Wei-Chih; Chang,Huei-Cih; Tsai,Shih-Wei; Wang,Chia-Yih

doi:10.3892/or.2023.8604

September-2023 Volume 50 Issue 3

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September-2023 Volume 50 Issue 3

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Article Open Access

Polo‑like kinase 1 selective inhibitor BI2536 (dihydropteridinone) disrupts centrosome homeostasis via ATM‑ERK cascade in adrenocortical carcinoma

Authors:
- Ruei-Ci Lin
- Yu-Ying Chao
- Wei-Chih Lien
- Huei-Cih Chang
- Shih-Wei Tsai
- Chia-Yih Wang
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Affiliations: Department of Cell Biology and Anatomy, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan, R.O.C., Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan 709, Taiwan, R.O.C., Department of Physical Medicine and Rehabilitation, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 709, Taiwan, R.O.C., Department of Obstetrics and Gynecology, An Nan Hospital, China Medical University, Tainan 709, Taiwan, R.O.C.

Copyright: © Lin et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
Article Number: 167
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Published online on: July 20, 2023

https://doi.org/10.3892/or.2023.8604
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Abstract

Adrenocortical carcinoma (ACC) is a rare but malignant tumor. Surgical removal, radiotherapy and combined chemotherapy are commonly used to treat ACC. Despite efforts for several decades, the mortality rate of ACC remains high after treatments. Therefore, identifying a novel therapeutic molecule is important to increase the survival rate of patients with ACC. The centrosome is a microtubule organizing center, and it also functions as a signaling hub to coordinate cell cycle progression. Deficiencies in the regulation of centrosome copy numbers may cause cell cycle arrest or even apoptosis. BI2536 is a polo like kinase 1‑selective inhibitor and has been tested for the treatment of several types of cancer, including lung, oral and gastric cancer. However, to the best of our knowledge, its effects on ACC have not yet been examined. The present study revealed that BI2536 inhibited Y1 ACC cell proliferation in a time‑ and dose‑dependent manner. BI2536 blocked cell cycle progression and also induced cell apoptosis as shown by flow cytometry. Furthermore, following BI2536 treatment, centrosome amplification was induced, which resulted in aberrant mitosis. In terms of the mechanism, BI2536 induced DNA damage as evidenced by γH2AX staining and comet assay, followed by activation of ATM serine/threonine kinase‑ERK signaling to promote centrosome amplification. Therefore, the present study suggested that BI2536 could be used as an adjuvant therapy in the treatment of ACC, and also revealed the underlying molecular mechanism.

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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

Polo‑like kinase 1 selective inhibitor BI2536 (dihydropteridinone) disrupts centrosome homeostasis via ATM‑ERK cascade in adrenocortical carcinoma

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