实用医学杂志 ›› 2023, Vol. 39 ›› Issue (6): 679-687.doi: 10.3969/j.issn.1006⁃5725.2023.06.005

• 基础研究 • 上一篇    下一篇

内源性芳香烃配体ITE影响及机制对宫颈癌细胞生物学行为的 

逯彦越1,2 赵欣欣1,2 刘立燕1,2 王凯3 叶静文1,2 刘凌云1 王宝金1,2    

  1. 1 郑州大学第三附属医院妇科(郑州 450052);2 河南省卵巢恶性肿瘤国际联合实验室(郑州 450052); 3 同济大学附属第一妇婴保健院转化医学研究中心(上海 201204)

  • 出版日期:2023-03-25 发布日期:2023-03-25
  • 通讯作者: 王宝金 E-mail:307797362@qq.com
  • 基金资助:
    河南省医学科技攻关计划联合共建项目(编号:LHGJ20220535)

Effect and mechanism of endogenous aromatic ligand ITE on the biological behavior of cervical cancer cells

LU Yanyue*,ZHAO Xinxin,LIU Liyan,WANG Kai,YE Jingwen,LIU Lingyun,WANG Baojin.   

  1. Department of Gynecology,The Third Affiliated Hospital of Zhengzhou University,Zhenzhou 450052,China 

  • Online:2023-03-25 Published:2023-03-25
  • Contact: WANG Baojin E⁃mail:307797362@qq.com

摘要:

目的 探讨内源性芳香烃配体 2⁃(1′H⁃吲哚⁃3′⁃羰基)噻唑⁃4⁃羧酸甲酯(ITE)对宫颈癌细胞 生物学行为的影响及其作用机制。方法 免疫组化检测芳香烃受体(AhR)在宫颈癌及正常宫颈组织的表 达及定位;采用 ITE 处理宫颈癌细胞,MTS 实验检测增殖能力,Transwell 实验检测迁移能力,qRT⁃PCR Western blot 检测 AhR 及下游基因 CYP1A1、CYP1B1 mRNA 和蛋白的表达变化,通过 RNA⁃seq 技术和生物信 息学筛选参与 AhR 影响宫颈癌细胞增殖、迁移相关基因及相关信号通路;采用 siRNA 敲减 PKN1 后,检测 宫颈癌细胞增殖及迁移能力,KEGG 分析富集的与增殖及迁移相关的通路,Western blot 检测 ITE 处理后 PI3K⁃AKT 通路蛋白表达。结果 AhR 在宫颈癌组织中表达高于正常宫颈组织,ITE 激活 AhR 及下游基因 CYP1A1 CYP1B1 且呈剂量和时间依赖性抑制宫颈癌细胞 SiHa CaSki 的增殖和迁移能力(P < 0.05)。 RNA⁃seq 技术和生物信息学筛选显示,经 ITE 处理后,与宫颈癌增殖、迁移功能密切相关的 PKN1 表达下 调(P < 0.05),且 Western blot 结果显示,SiHa CaSki 宫颈癌细胞系中 PKN1 蛋白表达在 ITE 处理后显著 降低(P < 0.05)。通过敲低细胞 PKN1 表达后,SiHa CaSki 细胞的增殖及迁移能力显著下降(P < 0.05)。 KEGG信号通路富集分析结果显示,差异表达基因相关的信号通路主要集中在PI3K⁃AKT信号通路。PI3K⁃ AKT 通路抑制剂 LY294002 可阻断 ITE 诱导的P⁃AKT水平的增加(P < 0.05),并逆转ITE对宫颈癌细胞增殖 及迁移的抑制作用(P < 0.05)。结论 内源性芳香烃配 ITE 可以抑制宫颈癌细胞增殖和侵袭能力,可能与 下调PKN1及激活PI3K⁃AKT 通路有关。

关键词:

宫颈癌, 2?(1′H?吲哚?3′?羰基)噻唑?4?羧酸甲酯, 芳香烃受体, 蛋白激酶N1, PI3K? AKT 通路

Abstract:

Objective To study the effect of endogenous aromatic ligand ITE(2⁃(1′H⁃indole⁃3′⁃carbonyl)⁃ thiazole ⁃ 4 ⁃ carboxylic acid methylester)on the biological behavior and its mechanism of cervical cancer cells. Methods The expression and localization of AhR in cervical cancer and normal cervical tissues were detected by immunohistochemistry. MTS assay detected cell proliferation and Transwell assay detected cell migration. The qRT⁃ PCR and Western Blot assays were used to detect relative expression in the mRNA and protein of AhR and its downstream genes CYP1A1,CYP1B1. RNA⁃seq and bioinformatics were used to screen genes related to AhR that affect cervical cancer cell proliferation and migration,as well as related signaling pathways. The ability of cervical cancer cells to proliferate and migrate was observed after siRNA knockdown of PKN1. KEGG was used to analyze the enriched pathways related to proliferation and migration,and Western blot was used to detect protein expres⁃ sion in the PI3K⁃AKT pathway after ITE treatment of cervical cancer cells. Results The expression of AhR was higher in cervical cancer tissues than in normal cervical tissues. ITE activated AhR and downstream genes CYP1A1 and CYP1B1 and inhibited the proliferation and migration of cervical cancer cells SiHa and CaSki in a dose⁃ and time⁃dependent manner(P < 0.05). RNA⁃seq technique and bioinformatics screening showed that the expression of PKN1,which is closely related to the proliferation and migration functions of cervical cancer,was down⁃regulatedafter ITE treatment(P < 0.05),and Western blot results showed that PKN1 protein expression was significantly reduced in SiHa and CaSki cervical cancer cell lines after ITE treatmentr(P < 0.05). Proliferation and migration of SiHa and CaSki cells were significantly reduced by knocking down cellular PKN1 expression(P < 0.05). KEGG signal pathway enrichment analysis revealed that the differential expression gene signal pathway was primarily concentrated in the PI3K⁃AKT signal pathway. PI3K⁃AKT pathway inhibitor LY294002 blocked ITE⁃induced in⁃ crease in P⁃AKT levels(P < 0.05),and can reverse the inhibitory effect of ITE on the proliferation and migration of cervical cancer cells(P < 0.05). Conclusion Endogenous aromatic hydrocarbons containing ITE can inhibit the proliferation and invasion of cervical cancer cells,which may be related to PKN1 downregulation and PI3K ⁃ AKT activation.

Key words:

cervical cancer, ITE, Aryl hydrocarbon receptor, Protein kinase N1(PKN1), PI3K? AKT pathway