摘要
作者观察了1,25-二羟维生素D_3[1,25(OH)_2D_3]的类似物MC903对人原始巨核白血病细胞系(HIMeg)生长分化的影响。结果显示,MC903可以明显地抑制HIMeg的生长并诱导其分化,MC903(10^(-10)～10^(-6)mol/L)几乎完全抑制了HIMeg细胞的克隆形成能力;经MC903作用4d后,细胞周期分布也发生明显改变,表现为G_0+G_1期细胞百分数明显增多,而S期及G_2+M期细胞百分数减少。MC903对HIMeg细胞生长分化的影响具有剂量和时间依赖性特点,且其作用效应强于1,25(OH)_2D_3。本文结果提示,MC903和1,25(OH)_2D_3对巨核细胞系的生长分化调节过程具有重要作用。
The effects of MC903, a novel 1,25-dihydroxyvitamin D3 [1,25(OH)2 D3] analogue, on proliferation and differentiation of a human megakaryoblastic leukemia cell line (HIMeg) were investigated. MC903 was found to inhibit cell proliferation and induce cell differentiation of HIMeg cells. Colony formation assay showed that MC903 (10-10 to 10-6mol/L) almost completely inhibited the colony-forming ability of HIMeg cells. Cell cycle analysis demonstrated that MC903 altered the cell cycle distribution; the fraction of cells in G0 + G1 increased while those in S and G2 + M decreased after treatment with MC903 for 4d. The effect of MC903 on proliferation and differentiation of HIMeg cells was in a dose- and time-dependent manner and was more active than that of 1, 25(OH)2, D3,. The results of the present study suggested that 1,25(OH)2 D3 as well as its novel analogue MC903 might play an important role in modulating the proliferation and differentiation of megakaryocytic lineage.
出处
《第二军医大学学报》
CAS
CSCD
北大核心
1992年第6期556-560,共5页
Academic Journal of Second Military Medical University
基金
国家自然科学基金
