Recent developments in the use of vitamin D analogues

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Abstract
The non-classical effects of 1α,25-dihydroxyvitamin D3 (12D3) create possible therapeutic applications for immune modulation (e.g., autoimmune diseases and graft rejection), inhibition of cell proliferation (e.g., psoriasis, cancer) and induction of cell differentiation (e.g., cancer). The major drawback related to the use of 12D3 is its calcaemic effect, which prevents the application of pharmacological concentrations. Intensive research has led to the development of analogues of 12D3 characterised by a clear dissociation of the antiproliferative and prodifferentiating capacity from the calcaemic effects. Due to this dissociation, these analogues can be used not only for the treatment of bone disorders but also for non-classical applications. In the present review, a summary is given on the use of the 12D3 analogues for the treatment of cancer, skin and immune disorders and for the prevention of graft rejection. Moreover a brief overview is given on the use of analogues for secondary hyperparathyroidism.

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