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  • Title: Enhancement by dimethyl sulfoxide of 1,25-dihydroxyvitamin D3-induced differentiation in human promyelocytic HL-60 leukemia cells requires dimethyl sulfoxide-induced G0/G1 arrest.
    Author: Odani T, Kohroki J, Nakanishi T, Itoh N, Muto N, Tanaka K.
    Journal: Res Commun Mol Pathol Pharmacol; 2000; 108(5-6):381-91. PubMed ID: 11958291.
    Abstract:
    We investigated the induction of differentiation in human promyelocytic HL-60 leukemia cells by a relatively low concentration of 1,25-dihydroxyvitamin D3 (1,25(OH)2D3). The cells were markedly induced to differentiate by combined treatment with reduced concentrations of dimethyl sulfoxide (DMSO) and 1,25(OH)2D3, neither of which alone had much of an effect on differentiation. At 48 hr post-treatment, a greater proportion of DMSO- and DMSO/1,25(OH)2D3-treated, but not 1,25(OH)2D3-treated, cells were in G0/G1 than untreated cells. Our study indicates that the synergistic effect of DMSO and 1,25(OH)2D3 on the induction of differentiation in HL-60 cells requires DMSO-induced G0/G1 arrest.
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