临床肿瘤学杂志

• 论著 • 上一篇    下一篇

微小RNA-96对宫颈癌细胞HeLa增殖凋亡及Spindlin1表达的影响

赵靓1,夏春军2,吴堂兵2,谷文龙2,肖艳华2   

  1. 1 210029 南京 南京医科大学附属脑科医院物理诊断科2 224700 南通大学附属建湖医院肿瘤放疗科
  • 收稿日期:2017-05-21 修回日期:2017-08-11 出版日期:2017-10-30 发布日期:2017-10-30

Effect of microRNA-96 on proliferation, apoptosis and expression of spindlin1 in cervical cancer cell line HeL

ZHAO Liang,XIA Chunjun,WU Tangbing,GU Wenlong,XIAO Yanhua.   

  1. Department of Physical Diagnosis,Brain Hospital Affiliated to Nanjing Medical University, Nanjing 210029,China
  • Received:2017-05-21 Revised:2017-08-11 Online:2017-10-30 Published:2017-10-30

摘要: 目的 探讨微小RNA-96(miR-96)对宫颈癌细胞HeLa增殖凋亡及Spindlin1(SPIN1)表达的影响。方法采用脂质体法将miR-96 模拟物(mimics)及阴性对照分别转染至宫颈癌HeLa细胞(miR-96转染组和miR-96对照组),以未行转染的HeLa细胞为未转染组,实时定量PCR(QPCR)检测各组转染48 h后细胞中miR-96的表达情况,MTT及流式细胞仪分别检测各组转染48 h后的增殖及凋亡情况,分别采用QPCR和Western blotting检测转染48 h后各组细胞的SPIN1 mRNA和蛋白水平,通过双荧光素酶靶标实验验证miR-96与SPIN1之间的关系。结果 转染48 h后未转染组、miR-96对照组和miR-96转染组的miR-96水平依次为1.068±0.053、1.175±0.084和2.434±0.088,miR-96转染组的miR-96水平高于其余两组,差异有统计学意义(P<0.05);未转染组、miR-96对照组和miR-96转染组的增殖率依次为(99.633±5.059)%、(97.727±3.079)%和(62.023±5.425)%,凋亡率依次为(7.515±0.924)%、(8.123±1.247)%和(26.845±4.126)%,与其余两组相比,miR-96转染组的增殖率降低而凋亡率升高,差异有统计学意义(P<0.05);未转染组、miR-96对照组和miR-96转染组的SPIN1 mRNA水平依次为0.965±0.046、0.917±0.044和0.549±0.039,SPIN1 蛋白水平依次为0.667±0.042、0.715±0.045和0.384±0.038,miR-96转染组的SPIN1 mRNA和蛋白水平均低于其余两组,差异有统计学意义(P<0.05)。miR-96抑制含有野生型SPIN1-3’UTR质粒细胞的荧光素酶活性,却对含有突变型质粒细胞的荧光素酶活性无影响。结论 过表达miR-96可抑制宫颈癌细胞的增殖凋亡并降低SPIN1表达水平,miR-96对SPIN1有靶向调控作用,可作为治疗宫颈癌的有效靶点。

Abstract: Objective To investigate the effect of microRNA-96 (miR-96) on proliferation, apoptosis and expression of spindlin1 (SPIN1) in cervical cancer cell line HeLa. Methods The miR-96 analog(mimics) and negative control were transfected into cervical cancer HeLa cells (miR-96 transfection group and miR-96 control group) by liposome, and the HeLa cells without transfection were chosen as non-transfection group. Real time quantitative PCR (QPCR) was used to detect the expression of miR-96 in each group at 48 h after transfection. MTT and flow cytometry were used to detect the proliferative and apoptotic rates at 48 h after transfection in each group. The mRNA and protein levels of SPIN1 in each group were detected by QPCR and Western blotting at 48 h after transfection,respectively. The relationship between miR-96 and SPIN1 was verified by double luciferase target test. Results At 48 h after transfection, the miR-96 levels were 1.068±0.053,1.175±0.084 and 2.434±0.088 in non-transfection group, miR-96 control group and miR-96 transfection group. The miR-96 level in miR-96 transfection group was higher than those of other two groups (P<0.05). The proliferative rates were (99.633±5.059)%, (97.727±3.079)% and (62.023±5.425)%, and the apoptotic rates were (7.515±0.924)%,(8.123±1.247)% and (26.845±4.126)% in non-transfection group, miR-96 control group and miR-96 transfection group, respectively. Compared with other two groups,the proliferative rate of miR-96 transfection group decreased and the apoptotic rate increased (P<0.05). The mRNA levels of SPIN1 were 0.965±0.046, 0.917±0.044 and 0.549±0.039,and the protein levels of SPIN1 were 0.667±0.042, 0.715±0.045 and 0.384±0.038 in non-transfection group,miR-96 control group and miR-96 transfection group, respectively. The mRNA and protein levels of SPIN1 in miR-96 transfection group were lower than those of other two groups,and the difference was statistically significant (P<0.05). MiR-96 inhibited luciferase activity of cells with wild-type SPIN1-3’UTR plasmid, but had no effect on luciferase activity in cells with mutant plasmid. Conclusion Overexpression of miR-96 can inhibit the proliferation and apoptosis of cervical cancer cells and reduce the expression level of SPIN1. MiR-96 can target SPIN1 effectively and can be used as an effective target for the treatment of cervical cancer.

No related articles found!
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
No Suggested Reading articles found!