Journal
BIOESSAYS
Volume 26, Issue 1, Pages 21-28Publisher
WILEY
DOI: 10.1002/bies.10368
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General knowledge of the role of vitamin D-3 in human physiology has been shaped by its discovery as a preventive agent of nutritional rickets, a defect in bone development due to inadequate uptake of dietary calcium. Studies on the function of the hormonal form of vitamin D-3, 1alpha,25-dihydroxyvitamin D-3, have been greatly accelerated by the molecular cloning and structural analysis of the vitamin D-3 receptor, which is a ligand-activated regulator of gene transcription. Molecular genetic techniques including genomics have helped reveal that 1alpha,25-dihydroxyvitamin D-3 can control more than calcium homeostasis. It has widespread effects on cellular differentiation and proliferation, and can modulate immune responsiveness, and central nervous system function. Moreover, accumulating epidemiological and molecular evidence suggests that 1alpha,25-dihydroxyvitamin D-3 acts as a chemopreventive agent against several malignancies including cancers of the prostate and colon. Here, we survey the most-recent findings and discuss their implications for the potential therapeutic uses of vitamin D analogues. (C) 2003 Wiley Periodicals, Inc.
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