摘要
为了探讨脂质体转染细胞周期蛋白 (cyclin)G1反义脱氧寡核苷酸 (ASON)对HL 6 0细胞增殖调控的作用 ,用针对cyclinG1mRNA 5′端编码区起始密码子 (ATG/AUG)的ASON ,通过脂质体导入HL 6 0细胞共培养后 ,用免疫组织化学法和RT PCR分别检测cyclinG1和mRNA水平的表达 ,用电镜、细胞原位凋亡检测法 (POD)、流式细胞术(FCM)及DNA凝胶电泳等方法检测细胞凋亡。结果表明 :cyclinG1ASON组与SON及空白对照组相比 ,ASON能特异地抑制cyclinG1及mRNA水平的表达 ,当ASON的浓度达到一定程度时 ,HL 6 0细胞的增殖及集落形成率均明显受抑制 ,出现细胞凋亡 ,并且此作用随ASON浓度的升高而增强。结论 :cyclinG1的特异反义脱氧寡核苷酸能封闭其蛋白及mRNA水平的表达 ,对白血病细胞的增殖有抑制作用 ,并可促使细胞凋亡 ,且有浓度依赖性。
To investigate the effect of cyclin G1 antisense oligodeoxynucleotide (ASON) with liposomal transfection on mediating proliferation of HL-60 cell, the cyclin G1 ASON with liposomal transfection was used in vitro in co-culture with HL-60 cell, the protein and mRNA expression levels of cyclin G1 were measured by immunocytochemistry assay and RT-PCR. The cell apoptosis was detected by electron microscopy, in situ cell apoptosis detection kit (POD), DNA gel electrophoresis and flow cytometry (FCM). The results showed that in the cyclin G1 ASON group the protein and mRNA expression of cyclin G1 were significantly inhibited as compared with sense oligodeoxynucleotide(SON) group and blank group. When the ASON concentration increased, the proliferation ratio of HL-60 cell and CFU of HL-60 were also significantly inhibited. There was apoptosis of HL-60 cell. In conclusion, cyclin G1 ASON can specifically inhibite its protein and mRNA expression levels as well as the HL-60 cell proliferations and can accelerate the apoptosis of leukemia cells with concentration-dependent effect of ASON.
出处
《中国实验血液学杂志》
CAS
CSCD
2004年第1期48-54,共7页
Journal of Experimental Hematology
基金
河北省科委基金资助项目
编号 0 2 2 7610 4d -13
