吉林大学学报(医学版) ›› 2020, Vol. 46 ›› Issue (6): 1247-1253.doi: 10.13481/j.1671-587x.20200622

• 基础研究 • 上一篇    下一篇

lncRNA-CCAT2对宫颈癌CaSki细胞凋亡的影响及其机制

王霞,姚玉君,汤静,李开慧()   

  1. 湖北省鄂州市中医医院妇产科,湖北 鄂州 436006
  • 收稿日期:2020-03-07 出版日期:2020-11-28 发布日期:2022-08-24
  • 通讯作者: 李开慧 E-mail:1500629087@qq.com
  • 作者简介:王 霞(1977-),女,湖北省鄂州市人,副主任医师,主要从事妇科肿瘤基础和临床方面的研究。
  • 基金资助:
    湖北省卫健委面上项目资助课题(WJ2019M073

Effect of lncRNA-CCAT2 on apoptosis of cervical cancer CaSki cells and its mechanism

Xia WANG,Yujun YAO,Jing TANG,Kaihui LI()   

  1. Department of Gynaecology and Obstetrics,Ezhou Hospital of Traditional Chinese Medicine,Hubei Province,Ezhou 436006,China
  • Received:2020-03-07 Online:2020-11-28 Published:2022-08-24
  • Contact: Kaihui LI E-mail:1500629087@qq.com

摘要: 目的

研究长链非编码RNA(lncRNA)-结肠癌相关转录本2(CCAT2)对宫颈癌细胞凋亡的作用及其机制。

方法

将人宫颈癌CaSki细胞分为对照组、CCAT2过表达组、CCAT2干扰组、过表达NC组和干扰NC组。构建CCAT2过表达载体和干扰载体,分别转染CCAT过表达组和CCAT2干扰组宫颈癌CaSki细胞。qRT-PCR法检测各组宫颈癌CaSki细胞中CCAT2 mRNA表达水平,MTT法检测各组宫颈癌CaSki细胞增殖率,流式细胞术检测各组细胞凋亡率,qRT-PCR法检测各组宫颈癌CaSki细胞中第十号染色体缺失的磷酸酶与张力蛋白同源基因(PTEN)mRNA表达水平,Western blotting法检测各组宫颈癌CaSki细胞中PTEN、磷脂酰肌醇3-激酶(PI3K)、磷酸化PI3K(p-PI3K)、蛋白激酶B(AKT)、磷酸化AKT(p-AKT)、B淋巴细胞瘤 2(Bcl-2)和Bcl-2相关X蛋白(Bax)表达水平。

结果

与对照组比较,CCAT2过表达组宫颈癌CaSki细胞增殖率和细胞中CCAT2 mRNA及Bcl-2、p-PI3K和p-AKT蛋白表达水平明显升高(P<0.05);细胞凋亡率和细胞中Bax蛋白、PTEN mRNA及蛋白表达水平均明显降低(P<0.05)。与对照组比较,CCAT2干扰组宫颈癌CaSki细胞增殖率和细胞中CCAT2 mRNA及Bcl-2、p-PI3K和p-AKT蛋白表达水平明显降低(P<0.05);细胞凋亡率和细胞中Bax蛋白、PTEN mRNA及蛋白表达水平均明显升高(P<0.05);与对照组比较,过表达NC组和干扰NC组细胞增殖率、凋亡率和细胞中CCAT2 mRNA及PTEN、Bcl-2、Bax、p-PI3K和p-AKT蛋白表达水平比较差异无统计学意义(P>0.05)。

结论

lncRNA-CCAT2可抑制人宫颈癌细胞凋亡,其机制可能与PTEN/PI3K/AKT通路有关联。

关键词: 结肠癌相关转录本2, 宫颈肿瘤, 细胞凋亡, 第十号染色体缺失的磷酸酶与张力蛋白同源基因, 磷脂酰肌醇3-激酶, 蛋白激酶B

Abstract: Objective

To investigate the effect of long non-coding RNA (lncRNA)-colon cancer-associated transcript 2 (CCAT2) on the apoptosis of cervical cancer CaSki cells and its mechanism.

Methods

The human cervical cancer CaSki cells were divided into control group, over-expression CCAT2 group, sh-CCAT2 group, over-expression NC group and sh-NC group. The over-expression and interference vectors of CCAT2 were constructed and transfected into the cervical cancer CaSki cells in over-expression CCAT2 and sh-CCAT2 groups, respectively. The expression levels of CCAT2 mRNA in cervical cancer CaSki cells in various groups were detected by qRT-PCR method; MTT assay was used to detect the viability of cervical cancer CaSki cells in various groups;flow cytometry was used to detect the apoptotic rates of cervical cancer CaSki cells in various groups; qRT-PCR method was used to detect the expression levels of phosphatase and tensin homolog deleted on chromosome ten (PTEN) mRNA in cervical cancer CaSki cells in various groups;Western blotting method was used to detect the expression levels of PTEN, phosphoinositide 3-kinase (PI3K),phosphorylated PI3K( p-PI3K), protein kinase B (AKT),phosphorylated AKT (p-AKT), B-cell lymphoma-2 (Bcl-2), and Bcl-2 associated X protein (Bax) proteins in the cervical cancer CaSki cells in various groups.

Results

Compared with control group, the cell proliferation rate and the expression levels of CCAT2 mRNA and Bcl-2, p-PI3K,and p-AKT proteins in the cervical cancer CaSki cells in over-expression CCAT2 group were significantly increased(P<0.05), while the apoptotic rate and the expression levels of Bax protein, PTEN mRNA and protein were significantly decreased (P<0.05). Compared with control group, the proliferation rate of cervical cancer CaSki cells and the expression levels of CCAT2 mRNA and Bcl-2, p-PI3K, and p-AKT proteins in the cervical cancer CaSki cells in sh-CCAT2 group were significantly decreased (P<0.05); the apoptotic rate and the expression levels of Bax protein, PTEN mRNA and protein were significantly increased (P<0.05). Compared with control group, the cell proliferation rate, apoptotic rate, and expression levels of CCAT2 mRNA and PTEN, Bcl-2, Bax, p-PI3K,and p-AKT proteins in the cervical cancer CaSki cells in over-expression NC group and sh-NC group had no significant differences(P>0.05).

Conclusion

LncRNA-CCAT2 can inhibit the apoptosis of cervical cancer cells, and its mechanism may be related to the PTEN/PI3K/AKT pathway.

Key words: colon cancer-associated transcript 2, cervical cancer, cell apoptosis, phosphatase and tensin homolog deleted on chromosome ten, phosphoinositide 3-kinase, protein kinase B

中图分类号: 

  • R737.33