二烯丙基二硫上调p21、STAT1和CAMTA1诱导人白血病HL-60细胞分化

目的应用抑制性消减杂交(SSH)研究二烯丙基二硫(diallyl disulfide,DADS)诱导人白血病HL-60细胞分化的分子机制。方法在前期工作中,我们成功地构建了具有高消减效率的DADS诱导白血病分化的cDNA文库,本实验通过挑取文库中的30个克隆制备质粒并酶切分析、测序和同源性检索。结果18个克隆均具有100～600bp左右的插入片段,测序分析发现10个差异表达基因,分别与细胞周期、信号转导、代谢、RNA结合等有关。RT-PCR验证其中上调的3个基因:p21、STAT1和CAMTA1,结果与SSH相符。结论p21、STAT1和CAMTA1表达上调与DADS诱导白血病分化密切相关。

Diallyl disulfide induces human leukemia HL-60 cells differentiation by up-regulating the expressions of p21,STAT1 and CAMTA1

Aim To investigate the molecular mechanisms of differentiation in human leukemia HL-60 cells induced by diallyl disulfide(DADS)using suppression subtractive hybridization(SSH).Methods In our privious study,the subtractive cDNA library was constructed successfully and efficiently. 30 clones were randomly analyed with restriction enzyme.The inserts of cDNAs were analyzed by restrictive enzyme EcoR I.Positive clones were sequenced and the homology of resulting cDNA sequences were analyzed through bioinformatics software Blastn.Results 18 clones contained 100～600 bp cDNA inserts.10 differantiation genes were obtained and involved in cell cycle,signal transduction,metabolism and RNA binding.And 3 of 10 genes,p21,STAT1 and CAMTA1 were up-regulated and detected by RT-PCR,the results matched with SSH.Conclusion sThere are tight correlation between the differentiation induced by DADS and three-upregulated gene:p21,STAT1 and CAMTA1.