These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: 1,25-dihydroxyvitamin D(3) promotes IL-10 production in human B cells.
    Author: Heine G, Niesner U, Chang HD, Steinmeyer A, Zügel U, Zuberbier T, Radbruch A, Worm M.
    Journal: Eur J Immunol; 2008 Aug; 38(8):2210-8. PubMed ID: 18651709.
    Abstract:
    1,25-dihydroxyvitamin D(3) (calcitriol) regulates immune responses, e.g., inhibits expression of IgE by B cells and enhances expression of IL-10 by dendritic cells and T cells. We report here that activation of human B cells by B cell receptor, CD40 and IL-4 signals induces expression of the gene for 25-hydroxyvitamin-D3-1alpha-hydroxylase (CYP1alpha). Accordingly, these B cells generate and secrete significant amounts of calcitriol. In activated B cells calcitriol induces expression of the genes Cyp24, encoding a vitamin D hydroxylase, and Trpv6, encoding a calcium selective channel protein. Calcitriol enhances IL-10 expression of activated B cells more than threefold, both by recruiting the vitamin D receptor to the promoter of Il-10, and to lesser extent by modulation of calcium-dependent signaling. The molecular link in activated B cells between vitamin D signaling, expression of IgE and IL-10, and their ability to produce calcitriol from its precursor, suggest that pro-vitamin D (25-hydroxyvitamin D(3)) can be used as a modulator of allergic immune responses.
    [Abstract] [Full Text] [Related] [New Search]