In vitro and in vivo inhibition of liver cancer cells by 1,25-dihydroxyvitamin D3
In vitro and in vivo inhibition of liver cancer cells by 1,25-dihydroxyvitamin D3.
M H Pourgholami, J Akhter, Y Lu, D L Morris
University of New South Wales, Department of Surgery, St. George Hospital, Kogarah, Sydney, Australia.
Cancer Letters (impact factor: 4.24). 05/2000; 151(1):97-102.
ABSTRACT Inhibitory effects of 1,25-dihydroxyvitamin D3 (1,25-(OH)2D3) on the proliferation of a variety of cancer cell lines have been extensively reported. We have studied the effect of 1,25-(OH)2D3 (10(-11)-10(-6) M) on the proliferation of a number of human and rat liver cancer cell lines. Additionally, the effect of 1,25-(OH)2D3 (0.02-0.5 microg/kg per day) on the rate of growth of liver cancer cell line xenografts in nude mice was also investigated. In vitro, proliferation of Hep-3B, PLC/PRF/5, and SKHEP-1 cells was significantly inhibited by 1,25-(OH)2D3, while HTC and Novikoff cells were more resistant to the inhibitory effects of the drug. In vivo, treatment of SKHEP-1 tumor bearing nude mice with different doses of 1,25-(OH)2D3 significantly retarded tumor growth without the development of hypercalcemia.
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