Treatment with high-dose simvastatin inhibits geranylgeranylation in AML blast cells in a subset of AML patients

Karen van der Weide, Susan de Jonge-Peeters, Gerwin Huls, Rudolf S. N. Fehrmann, Jan Jacob Schuringa, Folkert Kuipers, Elisabeth G. E. de Vries, Edo Vellenga*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

11 Citations (Scopus)

Abstract

It is currently unknown whether the in vitro effects observed with statins in acute myeloid leukemia (AML) cells, including lowering of cholesterol, inhibition of isoprenylation, and sensitization to chemotherapy, also occur in vivo. Therefore, AML mononuclear cells (MNCs) were isolated from 12 patients before and after 7 days of high-dose (7.5-15 mg/kg/day) simvastatin treatment. Parallel mouse studies were performed to have, in addition to AML cells, access to liver tissue, a major target of statins. Serum cholesterol levels were lowered by simvastatin in all patients, however, only limited changes in the messenger RNA expression of cholesterol metabolism genes were seen in patient and mouse MNCs compared to murine liver cells. Still, two out of seven patients displayed an increased in vitro chemosensitivity of their AML cells upon simvastatin treatment. Gene set enrichment analysis on microarray data of AML patient cells and Western blot analysis for the isoprenylated proteins DnaJ and Rap1 on murine and AML patient MNCs demonstrated that in vivo simvastatin treatment resulted in inhibition of geranylgeranylation in murine MNCs and in a subset of patient AML MNCs. In summary, our data demonstrate that simvastatin treatment results in chemosensitization and inhibition of geranylgeranylation in AML cells of a subset of patients. (C) 2012 ISEH - Society for Hematology and Stem Cells. Published by Elsevier Inc.

Original languageEnglish
Pages (from-to)177-186
Number of pages10
JournalExperimental Hematology
Volume40
Issue number3
DOIs
Publication statusPublished - Mar-2012

Keywords

  • ACUTE MYELOID-LEUKEMIA
  • LIVER-X-RECEPTOR
  • BINDING CASSETTE TRANSPORTERS
  • DENSITY-LIPOPROTEIN RECEPTOR
  • COA REDUCTASE INHIBITORS
  • CHOLESTEROL-SYNTHESIS
  • INDUCED APOPTOSIS
  • LDL RECEPTOR
  • PLASMA-CELLS
  • ACTIVATION

Cite this