实用肿瘤学杂志 ›› 2022, Vol. 36 ›› Issue (1): 14-19.doi: 10.11904/j.issn.1002-3070.2022.01.003

• 基础研究 • 上一篇    下一篇

KIF14在肝细胞癌SMCC-7721获得性耐药机制中的研究

王宗文1,2, 李小东1,2, 朱乾坤1,2, 曾世聪1,2, 翟博1,2   

  1. 1.黑龙江省医学科学院(哈尔滨 150001);
    2.哈尔滨医科大学附属第四医院肿瘤外科肝胆外科
  • 收稿日期:2021-05-28 修回日期:2021-11-05 出版日期:2022-02-28 发布日期:2022-01-21
  • 通讯作者: 翟博,E-mail:zhaibo_hrbmu@163.com
  • 作者简介:王宗文,男,(1997-),硕士研究生,从事肝癌耐药机制的研究。
  • 基金资助:
    黑龙江省医学科学院科研计划项目(编号:201815);哈尔滨医科大学附属第四医院星火计划项目(编号:HYDSYXH201904)

KIF14 in the mechanism of acquired drug resistance in hepatocellular carcinoma SMCC-7721 cells

WANG Zongwen1,2, LI Xiaodong1,2, ZHU Qiankun1,2, ZENG Shicong1,2, ZHAI Bo1,2   

  1. 1. Heilongjiang Academy of Medical Sciences,Harbin 150001,China;
    2. Department of Oncology and Hepatobiliary Surgery,The Fourth Affiliated Hospital of Harbin Medical University
  • Received:2021-05-28 Revised:2021-11-05 Online:2022-02-28 Published:2022-01-21

摘要: 目的 探究抑制KIF14与肝细胞癌SMCC-7721对索拉非尼获得性耐药的关系。方法 采用浓度梯度法建立肝细胞癌索拉非尼耐药细胞系SMCC-7721-SR,后采用CCK-8法、流式细胞仪验证耐药细胞株的耐药性。在人正常肝细胞LO2、肝细胞癌SMCC-7721及其耐药细胞SMCC-7721-SR中,采用qRT-PCR及Western blot法检测KIF14的表达情况。随后使用KIF14特异性的小干扰RNA(siKIF14)敲低KIF14并通过Western blot法检测KIF14的表达;为探究敲低KIF14后联合索拉非尼对肝细胞癌索拉非尼耐药细胞的影响,采用CCK-8法检测细胞活力、流式细胞仪检测细胞凋亡。结果 与LO2相比SMCC-7721中KIF14表达增高(P<0.01),与SMCC-7721相比SMCC-7721-SR中KIF14表达也增强(P<0.01);敲低KIF14的表达可协同索拉非尼抑制SMCC-7721-SR的细胞活力、促进细胞凋亡(P<0.01)。结论 KIF14参与调控SMCC-7721索拉非尼的获得性耐药,抑制KIF14的表达可增强肝细胞癌SMCC-7721-SR对索拉非尼的敏感性。

关键词: 肝细胞癌, 驱动蛋白家族成员14, 索拉非尼, 耐药

Abstract: Objective The objective of this study was to explore the relationship between inhibition of KIF14 and acquired resistance of hepatocellular carcinoma(HCC)SMCC-7721 cells to sorafenib.Methods The concentration gradient method was used to establish the HCC sorafenib-resistant SMCC-7721-SR cell line,and then the CCK-8 method and flow cytometry were used to verify resistant cell properties of the drug-resistant cell line.The qRT-PCR and Western blot assays were used to determine the expression of KIF14 in human normal liver LO2 cells,HCC SMCC-7721 cells and drug-resistant SMCC-7721-SR cells.Subsequently,KIF14-specific small interfering RNA(siKIF14)was used to knock down KIF14 and the KIF14 level was verified by Western blot;in order to explore the effect of knocking down KIF14 combined with sorafenib on HCC sorafenib-resistant cells,the CCK-8 method was used to detect cell viability,and flow cytometry was used to detect cell apoptosis.Results Compared with LO2 cells,the expression of KIF14 in SMCC-7721 cells was increased(P<0.01),and the expression of KIF14 in SMCC-7721-SR cells was also increased when compared with SMCC-7721 cells(P<0.01).Knocking down KIF14 expression could synergistically sorafenib inhibit the cell viability of SMCC-7721-SR cells and promote cell apoptosis(P<0.01).Conclusion KIF14 is involved in the process of HCC and regulates the acquired sorafenib resistance of SMCC-7721 cells.Inhibiting the KIF14 expression could enhance the sensitivity of SMCC-7721-SR cells to sorafenib.

Key words: Hepatocellular carcinoma, KIF14, Sorafenib, Drug resistance

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