吉林大学学报(医学版) ›› 2021, Vol. 47 ›› Issue (3): 687-693.doi: 10.13481/j.1671-587X.20210319

• 基础研究 • 上一篇    下一篇

C19ORF12对胃癌MKN45细胞增殖和化疗药敏感性的影响及其机制

杨颖1,赵伟2,吕丹3()   

  1. 1.北京大学人民医院输血科,北京 100044
    2.中日友好医院检验科,北京 100029
    3.北京大学医学部系统生物医学研究所,北京 100191
  • 收稿日期:2020-12-01 出版日期:2021-05-28 发布日期:2021-05-28
  • 通讯作者: 吕丹 E-mail:taotao@bjmu.edu.cn
  • 作者简介:杨 颖(1984-),女,辽宁省大连市人,医师,医学博士,主要从事肿瘤生物学方面的研究。
  • 基金资助:
    北京市自然科学基金项目(7194331);国家自然科学基金项目(81501360)

Effect of C19ORF12 on proliferation and chemo-sensitivity of gastric cancer MKN45 cells and its mechanism

Ying YANG1,Wei ZHAO2,Dan LYU3()   

  1. 1.Department of Blood Transfusion,Peking University People’s Hospital,Beijing 100044,China
    2.Department of Clinical Laboratory,China-Japan Friendship Hospital,Beijing 100029,China
    3.Institute of Systems Biomedicine,School of Basic Medical Sciences,Peking University,Beijing 100191,China
  • Received:2020-12-01 Online:2021-05-28 Published:2021-05-28
  • Contact: Dan LYU E-mail:taotao@bjmu.edu.cn

摘要: 目的

探讨19号染色体开放读码框12(C19ORF12)对胃癌MKN45细胞增殖和化疗药物敏感性的影响,并阐明其作用机制。

方法

将胃癌MKN45细胞分为对照组和C19ORF12组。CCK-8法检测2组胃癌MKN45细胞的增殖活性,克隆形成实验检测2组胃癌MKN45细胞克隆形成数,CCK-8法检测加入化疗药物阿霉素或过氧化氢(H2O2)后2各组胃癌MKN45细胞存活率,流式细胞术检测2组胃癌MKN45细胞凋亡率,激光共聚焦显微镜技术检测C19ORF12在胃癌MKN45细胞中的亚细胞定位,GEPIA分析癌症基因组图谱(TCGA)中C19ORF12 mRNA在正常胃组织和胃癌组织中的表达差异,KM-plot回顾性分析不同表达水平C19ORF12对胃癌患者预后的影响。

结果

与对照组比较,C19ORF12组胃癌MKN45细胞增殖活性明显升高(P<0.05),克隆形成数升高(P<0.01)。阿霉素或H2O2作用后,与对照组比较,C19ORF12组胃癌MKN45细胞存活率升高(P<0.05或 P<0.01),细胞凋亡率降低(P<0.01)。激光共聚焦显微镜下,C19ORF12主要定位于胃癌MKN45细胞的线粒体中。与正常胃组织比较,胃癌组织中C19ORF12 mRNA表达水平明显升高(P<0.01)。与低表达C19ORF12的胃癌患者比较,高表达C19ORF12的胃癌患者总体生存期明显缩短(P<0.01)。

结论

C19ORF12能够促进胃癌细胞的增殖,并且降低胃癌细胞对化疗药物的敏感性。C19ORF12可以作为肿瘤治疗的潜在靶标。

关键词: C19ORF12, 胃肿瘤, 细胞增殖, 阿霉素, 化疗药敏感性, 活性氧

Abstract: Objective

To discuss the effect of C19ORF12 on the proliferation and chemo-sensitivity of the gastric cancer MKN45 cells,and to clarify its mechanism.

Methods

The gastric cancer MKN45 cells were divided into control group and C19ORF12 group. The proliferation activities of the gastric cancer MKN45 cells in two groups were detected by CCK-8 method; the number of colony formation of the gastric cancer MKN45 cells in two groups was detected by colony formation assay;the survival rates of the gastric cancer MKN45 cells after treated with chemotherapeutic drugs doxorubicin or hydrogen peroxide(H2O2) in two groups were detected by CCK-8 method; the apoptotic rates of the gastric cancer MKN45 cells in two groups were detected by flow cytometry; the subcellular localization of C19ORF12 in the gastric cancer MKN45 cells was detected by laser confocal microscope.The expression difference of C19ORF12 gene in Cancer Genome Atlas (TCGA) between normal gastric and gastric cancer tissues was analyzed by GEPIA.The effect of different expression level of C19ORF12 on the prognosis of gastric cancer patients was retrospectively analyzed by KM-plot.

Results

Compared with control group, the proliferation activity and the number of colone formation of the gastric cancer MKN45 cells in C19ORF12 group were significantly increased (P<0.01). Compared with control group, the survival rate of gastric cancer MKN45 cells in C19ORF12 group after treated with doxorubicin or H2O2 were increased(P<0.05 or P<0.01),and the apoptotic rates were decreased(P<0.01). The C19ORF12 was mainly expressed in the mitochondrion.The bioinformatics analysis results showed that compared with normal gastric tissue, the level of C19ORF12 mRNA in gastric cancer tissue was increased(P<0.01). Compared with the patients with low expression of C19ORF12, the overall survival time of gastric cancer patients with high expression of C19ORF12 was significantly decreased(P<0.01).

Conclusion

C19ORF12 can promote the proliferation of gastric cancer cells and reduce the sensitivity of gastric cancer cells to chemotherapeutic drugs. C19ORF12 can be used as a potential target for tumor therapy.

Key words: chromosome 19 open reading frame 12, gastric neoplasm, cell proliferation, doxorubicin, chemo-sensitivity, reactive oxygen species

中图分类号: 

  • R735.2