Abstract
Several studies indicate the involvement of protein kinases in the progression of various malignancies. Kinase inhibitors are therefore becoming important anticancer drugs. CK2 kinase (casein kinase-2) has been suggested to be a constituent of a neoplastic milleu, and its inhibition might represent a new approach to cancer therapy. Adrenocortical carcinomas (ACCs) are highly malignant neoplasms with poor overall prognosis. We have examined the effects of 2-dimethylamino-4,5,6,7-tetrabromobenzimidazole (DMAT), a potent CK2 inhibitor, on the H295R human adrenocortical cancer cell line. Treatment with DMAT decreases the secretion of aldosterone, dehydroepiandrosterone sulfate, and androstendione and results in an accumulation of 17-OH-progesterone. Cell growth as measured by the MTT and 5-bromo-2′-deoxyuridine incorporation assays is inhibited, and cell cycle analysis has revealed a slight induction of apoptosis. Thus, CK2 kinase activity is probably involved in human ACC endocrine activity and growth.
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This work was supported by European Cooperation in the field of Scientific and Technical Research (COST ACTION, grant no. CM0602) and the Polish Ministry of Science and Higher Education (grant no. 505-04-001). The synthesis of DMAT was supported by the Foundation for the Development of Diagnostics and Therapy, Warsaw, Poland.
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All the above authors state that they have no financial or personal relationships with other people or organizations that could inappropriately influence (bias) this work.
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Lawnicka, H., Kowalewicz-Kulbat, M., Sicinska, P. et al. Anti-neoplastic effect of protein kinase CK2 inhibitor, 2-dimethylamino-4,5,6,7-tetrabromobenzimidazole (DMAT), on growth and hormonal activity of human adrenocortical carcinoma cell line (H295R) in vitro. Cell Tissue Res 340, 371–379 (2010). https://doi.org/10.1007/s00441-010-0960-1
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DOI: https://doi.org/10.1007/s00441-010-0960-1