Biochemistry (Moscow)

, Volume 76, Issue 11, pp 1242–1252 | Cite as

Antitumor effect of non-steroid glucocorticoid receptor ligand CpdA on leukemia cell lines CEM and K562

  • E. A. Lesovaya
  • A. Yu. Yemelyanov
  • K. I. Kirsanov
  • M. G. Yakubovskaya
  • I. V. Budunova


Glucocorticoids (GCs) are widely used in chemotherapy of hematological malignancies, particularly leukemia. Their effect is mediated by glucocorticoid receptor (GR), a well-known transcription factor. Besides their therapeutic impact, GCs may cause a number of side effects leading to various metabolic complications. The goal of immediate interest is testing glucocorticoid analogs capable of induction/enhancement of GR transrepression, but preventing GR dimerization and transactivation leading to side effects. In this work we have investigated effects of a promising new selective GR agonist, 2-(4-acetoxyphenyl)-2-chloro-N-methylethylammonium chloride (CpdA), on CEM and K562 leukemia cells. Both cell lines express functional GR. CpdA compared with the glucocorticoid fluocinolone acetonide (FA) exerted more prominent cytostatic and apoptotic effects on the cells. Both cell lines exhibited sensitivity to CpdA, demonstrating a good correlation with the effects of FA on cell growth and viability. In contrast to FA, CpdA did not induce GR transactivation evaluated by no obvious increase in expression of GR target (and dependent) gene FKBP51. At the same time, luciferase assay showed that CpdA efficiently activated transrepression of NF-ϰB and AP-1 factors. We also evaluated the effect of combined action of CpdA and the proteasome inhibitor Bortezomib. The latter induced a caspase-dependent apoptosis in both T-cell leukemia cell lines. By treatment of CEM cells with different CpdA/GC and Bortezomib doses, we have designed a protocol where CpdA shows potentiating effect on Bortezomib cytotoxic activity. Generally, the present work characterizes a novel non-steroid GR ligand, CpdA, as a promising compound for possible application in leukemia chemotherapy.

Key words

glucocorticoid receptor leukemia selective GR agonist 



2-(4-acetoxyphenyl)-2-chloro-N-methylethylammonium chloride


dimethyl sulfoxide


endoplasmic reticulum


fluocinolone acetonide


glyceraldehyde-3-phosphate dehydrogenase




glucocorticoid receptor


histone deacetylase-1


poly(ADP-ribose) polymerase


propidium iodide


selective GR agonist


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Copyright information

© Pleiades Publishing, Ltd. 2011

Authors and Affiliations

  • E. A. Lesovaya
    • 1
  • A. Yu. Yemelyanov
    • 2
  • K. I. Kirsanov
    • 1
  • M. G. Yakubovskaya
    • 1
  • I. V. Budunova
    • 2
  1. 1.Institute of Carcinogenesis, Blokhin Cancer Research CenterRussian Academy of Medical SciencesMoscowRussia
  2. 2.Feinberg Medical School, Department of DermatologyNorthwestern UniversityChicagoUSA

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