Negative regulation of cell proliferation by mevalonate or one of the mevalonate phosphates

Jennifer A. Cuthbert, Peter E. Lipsky

Research output: Contribution to journalArticle

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Abstract

The role of mevalonate and its products in the regulation of cellular proliferation was examined using 6-fluoromevalonate (Fmev), a compound that blocks the conversion of mevalonate pyrophosphate to isopentenyl pyrophosphate. Fmev suppressed DNA synthesis by a variety of transformed and malignant T cell, B cell, and myeloid cell lines. In contrast to results previously reported with mitogen-stimulated human peripheral blood T cell DNA synthesis, low concentrations of low density lipoprotein (LDL) alone could not restore proliferation to these cell lines. The same concentrations of LDL were able to provide sufficient cholesterol and support the growth of all cell lines when mevalonate synthesis was blocked with a specific inhibitor of 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase, lovastatin. Fmev-mediated inhibition was totally prevented in some but not all cell lines when the concentration of exogenous LDL was increased 5-10-fold above that required to permit proliferation of lovastatin-blocked cells. Residual HMG-CoA reductase activity of cells cultured with LDL inversely correlated with the restoration of growth to Fmev-blocked cultures. Confirmation of the critical role of HMG-CoA reductase activity and mevalonate synthesis in the inhibition of cellular proliferation by Fmev was obtained by demonstrating that the specific inhibitor of this enzyme, lovastatin, restored proliferation of Fmev-blocked cells. Furthermore, supplementation of cultures with mevalonate, the product of HMG-CoA reductase activity, markedly inhibited proliferation of Fmev-blocked cells. These findings indicate that mevalonate or one of the mevalonate phosphates, which accumulates in Fmev-blocked cells, is a critical negative regulator of cellular proliferation.

Original languageEnglish (US)
Pages (from-to)17966-17971
Number of pages6
JournalJournal of Biological Chemistry
Volume266
Issue number27
StatePublished - Sep 25 1991

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Mevalonic Acid
Cell proliferation
Phosphates
Cells
Cell Proliferation
LDL Lipoproteins
Lovastatin
Oxidoreductases
Coenzyme A
Cell Line
T-cells
T-Lymphocytes
DNA
Enzyme Inhibitors
Myeloid Cells
Growth
Mitogens
Restoration
Cultured Cells
Blood Cells

ASJC Scopus subject areas

  • Biochemistry

Cite this

Negative regulation of cell proliferation by mevalonate or one of the mevalonate phosphates. / Cuthbert, Jennifer A.; Lipsky, Peter E.

In: Journal of Biological Chemistry, Vol. 266, No. 27, 25.09.1991, p. 17966-17971.

Research output: Contribution to journalArticle

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