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Here, we report on the identification of nucleolar spindle-associated protein (NuSAP), a novel 55-kD vertebrate protein with selective expression in proliferating cells. Its mRNA and protein levels peak at the transition of G2 to mitosis and abruptly decline after cell division. Microscopic analysis of both fixed and live mammalian cells showed that NuSAP(More)
The odd-skipped related genes Osr1 and Osr2 encode closely related zinc finger containing transcription factors that are expressed in developing limb. However, their role in osteoblast proliferation and differentiation remains controversial and little is known about their regulation. In this study we showed that both Osr1 and Osr2 were expressed in several(More)
The active form of Vitamin D, 1alpha,25-dihydroxyvitamin D(3) [1,25-(OH)(2)D(3)], demonstrates potent antiproliferative actions on normal as well as on malignant cell types by blocking the transition from the G1- to the S-phase of the cell cycle. Key target genes for 1,25-(OH)(2)D(3) in this non-classic effect remain largely unknown. Therefore, this study(More)
A previous cDNA microarray analysis in murine MC3T3-E1 osteoblasts revealed a cluster of genes involved in cell cycle progression that was significantly down-regulated after a single treatment with 1alpha,25-dihydroxyvitamin D(3) [1,25(OH)(2)D(3)] [L. Verlinden, G. Eelen, I. Beullens, M. Van Camp, P. Van Hummelen, K. Engelen, R. Van Hellemont, K. Marchal,(More)
The active form of Vitamin D, 1alpha,25-dihydroxyvitamin D(3) [1,25-(OH)(2)D(3)], has potent antiproliferative actions on various normal and malignant cells. Calcemic effects, however, hamper therapeutic application of 1,25-(OH)(2)D(3) in hyperproliferative diseases. Two 14-epi-analogs of 1,25-(OH)(2)D(3) namely 19-nor-14-epi-23-yne-1,25-(OH)(2)D(3) (TX522)(More)
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