Metastatic growth of lung cancer cells is extremely reduced in Vitamin D receptor knockout mice

The Journal of Steroid Biochemistry and Molecular Biology
Kimie NakagawaToshio Okano

Abstract

Lung metastatic neoplasms are the major cause of cancer mortality. Despite the progress of diagnostic techniques and improvements in surgical procedures, the prognosis of patients with lung cancer is generally poor, even in the early stages of cancer [Cancer: Principles and Practice of Oncology, vol. 1, fifth ed., Lippincott-Raven, New York, 1997, p. 849]. Epidemiological studies indicate a positive correlation with the prevalence of cancers and low serum levels of Vitamin D metabolites [Am. J. Clin. Nutr. 54 (1991) 193s; Cancer Epidemiol. Biomark. Prev. 9 (2000) 1059]. 1alpha,25-Dihydroxyvitamin D(3) [1alpha,25(OH)(2)D(3)] is a potent inhibitor of cancer cell proliferation in vitro [Proc. Natl. Acad. Sci. U.S.A. 78 (1981) 4990; Endocrinol. 139 (1998) 1046; Mol. Endocr. 15 (2001) 1127]. There is, however, no report demonstrating that 1alpha,25(OH)(2)D(3) is operative in vivo to inhibit metastatic growth of cancer cells. To verify this possibility, we generated a stable transfectant of the Lewis lung carcinoma (LLC) cell expressing green fluorescent protein (GFP) and examined its metastatic activity in wild-type mice and Vitamin D receptor (VDR) knockout mice that exhibit no Vitamin D-dependent calcemic activity and extremely hi...Continue Reading

Citations

Oct 22, 2008·Journal of Clinical Oncology : Official Journal of the American Society of Clinical Oncology·Rebecca Suk HeistDavid C Christiani
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