1,25-Dihydroxyvitamin D3 and agents that increase intracellular adenosine 3′,5′-monophosphate synergistically inhibit the mitogenic stimulation of human lymphocytes

A. Ravid*, R. Koren, R. Narinsky, C. Rotem, A. Novogrodsky, U. A. Liberman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

1,25-Dihydroxyvitamin D3 [1,25-(OH)2D3], like the immune response modulators prostaglandin E2 (PGE2) and histamine, inhibits mitogen-induced proliferation of human peripheral blood mononuclear cells. 1,25-(OH)2D3 acts synergistically with PGE2 and histamine to inhibit lymphocyte mitogenesis. This is apparent at a wide concentration range of 1,25-(OH)2D3 (3 × 10-11-10-8 mol/L). Cholera toxin, forskolin, and isobutylmethylxanthine, which like PGE2 and histamine increase intracellular concentrations of cAMP, also act synergistically with 1,25-(OH)2D3 in this system. Culture of mitogenstimulated adherent cell-depleted mononuclear cells with PGE2 increases the number of high affinity binding sites for 1,25-(OH)2D3. This finding may account for the synergistic interaction between the two agents.

Original languageEnglish
Pages (from-to)1687-1692
Number of pages6
JournalJournal of Clinical Endocrinology and Metabolism
Volume70
Issue number6
StatePublished - Jun 1990

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