Vitamin D and vitamin D analogs as cancer chemopreventive agents |
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Authors: | Guyton Kathryn Z Kensler Thomas W Posner Gary H |
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Institution: | CCS Associates, 2005 Landings Drive, Mountain View, CA 94043, USA. |
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Abstract: | Epidemiologic studies have associated vitamin D, attained through nutrition and sun exposure, with reduced cancer risk. Although dose-limiting hypercalcemia has limited the use of natural vitamin D in cancer prevention, several promising new synthetic vitamin D analogs (deltanoids) are under development. Examples are KH-1060, EB-1089, 1alpha-hydroxyvitamin D5, vitamin D2, and QW-1624F2-2. Clinical targets for deltanoids include colon, prostate, and breast. Studies to elucidate the molecular mechanisms underlying the observed efficacy of deltanoids are ongoing. The vitamin D receptor, a steroid/thyroid receptor superfamily member, appears to control most deltanoid effects on proliferation, apoptosis, differentiation, and angiogenesis. |
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Keywords: | calcitriol analogs 1ALPHA 25-DIHYDROXYVITAMIN D3 ANALOGS deltanoids |
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