吉林大学学报(医学版) ›› 2022, Vol. 48 ›› Issue (4): 946-953.doi: 10.13481/j.1671-587X.20220414

• 基础研究 • 上一篇    下一篇

肿瘤相关巨噬细胞来源IL-6通过上调肿瘤细胞中LIF表达对口腔鳞状细胞癌Cal27细胞侵袭和迁移的促进作用

李玮柏1,曹娟1,郭秀2,林欣萍1,董春玲2(),李波1,3()   

  1. 1.吉林大学口腔医院实验教学中心,吉林 长春 130021
    2.吉林大学第二医院呼吸内科,吉林 长春 130041
    3.中国医科大学口腔医学院·附属口腔医院实验教学中心 辽宁省口腔疾病重点实验室,辽宁 沈阳 110002
  • 收稿日期:2021-10-27 出版日期:2022-07-28 发布日期:2022-07-26
  • 通讯作者: 董春玲,李波 E-mail:cldong@jlu.edu.cn;972638190@qq.com
  • 作者简介:李玮柏(1994-),女,黑龙江省大庆市人,在读硕士研究生,主要从事口腔肿瘤发病机制和治疗方面的研究。
  • 基金资助:
    吉林省科技厅自然科学基金项目(20200201329JC);辽宁省科技厅自然科学基金面上项目(2021-MS-175);吉林省教育厅“十三五”科学技术研究规划项目(JJKH20201110KJ);吉林省财政厅优秀中青年骨干人才项目(JCSZ2019378-14);吉林省财政厅卫生专项项目(2020SCZT023);吉林省卫健委青年科技骨干培养计划项目(2016Q020);吉林省卫健委科研计划项目(2015Z007);吉林大学白求恩计划科研项目(2018B27)

Promotion effect of tumor associated macrophages-derived IL-6 on invasion and migration of oral squamous cell carcinoma Cal27 cells by upregulating LIF expression in tumor cells

Weibo LI1,Juan CAO1,Xiu GUO2,Chunling DONG1,Bo LI2()   

  1. 1.Experimental Teaching Center, Stomatology Hospital, Jilin University, Changchun 130021, China
    2.Department of Respiratory Medicine, Second Hospital, Jilin University, Changchun 130041, China
    3.Key Laboratory of Oral Diseases of Liaoning Province, School of Stomatology, Affiliated Stomatology Hospital, China Medical University, Shenyang 110002, China
  • Received:2021-10-27 Online:2022-07-28 Published:2022-07-26
  • Contact: Bo LI E-mail:cldong@jlu.edu.cn;972638190@qq.com

摘要: 目的

探讨肿瘤相关巨噬细胞(TAMs)来源的白细胞介素6(IL-6)对口腔鳞状细胞癌(OSCC)Cal27细胞中白血病抑制因子(LIF)表达及侵袭和迁移的影响,并阐明其可能的作用机制。

方法

体外培养人OSCC Cal27细胞和小鼠腹腔巨噬细胞(Raw264.7细胞)。Raw264.7细胞分为对照组和实验组,对照组细胞用普通培养基孵育,实验组细胞用Cal27细胞上清液孵育得到TAMs,实时荧光定量PCR(RT-qPCR)法和酶联免疫吸附测定(ELISA)法检测2组细胞中IL-6 mRNA表达水平及IL-6水平。Cal27细胞分为对照组和实验组(5 μg·L-1 Tocilizumab),对照组直接加入TAMs上清液,实验组提前用IL-6受体(IL-6R)抑制剂Tocilizumab干预后加入TAMs上清液,Transwell小室实验检测2组Cal27细胞迁移和侵袭能力,细胞划痕实验检测2组Cal27细胞划痕愈合率,RT-qPCR法和Western blotting法检测2组Cal27细胞中LIF mRNA及蛋白表达水平。

结果

RT-qPCR法和ELISA法检测,与对照组Raw264.7细胞比较,实验组TAMs中IL-6 mRNA表达水平和IL-6水平明显升高(P<0.01)。Transwell小室实验,与对照组比较,实验组Cal27细胞迁移和侵袭细胞数明显减少(P<0.01)。细胞划痕实验,与对照组比较,实验组Cal27细胞划痕愈合率明显降低(P<0.01)。RT-qPCR法和Western blotting法检测,与对照组比较,实验组Cal27细胞中LIF mRNA和蛋白表达水平明显降低(P<0.01)。

结论

TAMs来源的IL-6通过上调肿瘤细胞中LIF表达进而促进OSCC Cal27细胞的侵袭和迁移。

关键词: 白血病抑制因子, 口腔鳞状细胞癌, 肿瘤相关巨噬细胞, 白细胞介素6

Abstract: Background

To investigate the effects of tumor associated macrophages(TAMs)-derived interleukin-6 (IL-6) on the leukemia inhibitory factor (LIF) expression in oral squamous cell carcinoma (OSCC) Cal27 cells and the invasion and migration of OSCC Cal27 cells,and to clarify their possible mechanisms.

Methods

The human OSCC Cal27 cells and mouse peritoneal macrophages(Raw264.7 cells )were cultured in vitro. The Raw264.7 cells were divided into control and experimental groups. The cells in control group were incubated with DMEM, and the cells in experimental group were incubated with Cal27 conditioned medium (Cal27-CM) to obtain the TAMs. The expression levels of IL-6 mRNA and IL-6 levels in the cells in two groups were detected by real-time fluorescence quantitative PCR (RT-qPCR) and enzyme-linked immunosorbent assay (ELISA) methods. The Cal27 cells were divided into control group and experimental group (5 μg·L-1 Tocilizumab).The Cal27 cells in control group were directly treated with TAMs conditioned medium, and the Cal27 cells in experimental group were treated with interleukin 6 receptor (IL-6R) inhibitor Tocilizumab in advance and then treated with TAMs conditioned medium. Transwell chamber experiment was used to detect the migration and invasion abilities of Cal27 cells in two groups. Cell scratch assay was used to detect the scratch healing rates of Cal27 cells in two groups. RT-qPCR and Western blotting methods were used to detect the expression of levels LIF mRNA and protein in Cal27 cells in two groups.

Results

The results of RT-qPCR and ELISA showed that the mRNA expression level of IL-6 and the IL-6 level in the TAMs in experimental group were significantly higher than those in the RAW264.7 cells in control group (P<0.01). The results of Transwell chamber experiment showed that compared with control group, the number of migration and invasion cells in experimental group was significantly reduced (P<0.01). The results of cell scratch experiment showed that compared with control group, the scratch healing rate of the Cal27 cells in experimental group was significantly decreased (P<0.01). The RT-qPCR and Western blotting results showed that compared with control group, the expression levels of LIF mRNA and protein in the Cal27 cells in experimental group were decreased down-regulated (P<0.01).

Conclusion

TAMs-derived IL-6 promotes the invasion and migration of OSCC Cal27 cells by up-regulating the expression of LIF in tumor cells.

Key words: Leukemia inhibitory factor, Oral squamous cell carcinoma, Tumor associated macrophages, Interleukin-6

中图分类号: 

  • R739.8