吉林大学学报(医学版) ›› 2026, Vol. 52 ›› Issue (5): 1273-1281.doi: 10.13481/j.1671-587X.20260509

• 基础研究 • 上一篇    

三七总皂苷对胃癌细胞生物学行为和Keap1-Nrf2信号通路的影响

项东宇(),陈桂玉,项玥   

  1. 山东中医药高等专科学校中药系,山东 烟台 264199
  • 收稿日期:2025-12-17 接受日期:2026-02-06 出版日期:2026-09-28 发布日期:2026-10-15
  • 通讯作者: 项东宇 E-mail:xiangdongyu1106@163.com
  • 作者简介:项东宇(1980-),男,吉林省白山市人,副教授,理学硕士,主要从事中药资源开发与质量控制方面的研究。
  • 基金资助:
    山东省卫健委中医药科技项目(M20241230);山东省卫健委医药卫生科技项目(202402050223)

Effects of Panax notoginseng saponins on biological behaviors of gastric cancer cells and Keap1-Nrf2 signaling pathway

Dongyu XIANG(),Guiyu CHEN,Yue XIANG   

  1. Department of Chinese Materia Medica,Shandong College of Traditional Chinese Medicine,Yantai 264199,China
  • Received:2025-12-17 Accepted:2026-02-06 Online:2026-09-28 Published:2026-10-15
  • Contact: Dongyu XIANG E-mail:xiangdongyu1106@163.com

摘要:

目的 探讨三七总皂苷(PNS)对胃癌(GC)细胞生物学行为的影响,并分析其与Kelch样ECH相关蛋白1(Keap1)-核因子E2相关因子2(Nrf2)信号通路的关系。 方法 以GC细胞系AGS和HGC27细胞及人正常胃黏膜上皮细胞GES-1为研究对象,给予不同浓度PNS处理,采用MTT法检测各组细胞活性。将AGS和HGC27细胞分为对照组(0 μmol·L-1 PNS组)以及5、10和20 μmol·L-1 PNS组。采用集落形成实验检测各组细胞增殖能力,Transwell小室实验检测各组迁移细胞数和侵袭细胞数,2',7'-二氯二氢荧光素二乙酸酯(DCFH-DA)荧光探针法检测各组细胞中活性氧(ROS)水平,Western blotting法检测各组细胞中凋亡相关蛋白B细胞淋巴瘤2(Bcl-2)、Bcl-2相关X蛋白(Bax)、Bcl-2相关细胞死亡激动蛋白(Bad)、含半胱氨酸的天冬氨酸蛋白酶3(Caspase-3)和剪切型Caspase-3(cleaved Caspase-3)及Keap1和Nrf2蛋白表达水平,免疫共沉淀(Co-IP)法结合Western blotting法检测各组细胞中Keap1与Nrf2相互作用及Nrf2泛素化情况。 结果 处理48 h后,与对照组比较,5、10和20 μmol·L-1 PNS组AGS及HGC27细胞活性均明显降低(P<0.001),GES-1细胞活性差异无统计学意义(P>0.05)。与对照组比较,5、10和20 μmol·L-1 PNS组AGS及HGC27细胞集落形成数以及迁移细胞数和侵袭细胞数均明显减少(P<0.001),细胞凋亡率和细胞中ROS水平均明显升高(P<0.05或P<0.01)。与对照组比较,5、10和20 μmol·L-1 PNS组AGS及HGC27细胞中Bcl-2和Nrf2蛋白表达水平明显降低(P<0.001),Bad、Bax、cleaved Caspase-3和Keap1蛋白表达水平明显升高(P<0.001)。与对照组比较,PNS组AGS和HGC27细胞中Keap1与Nrf2共沉淀信号均增强,AGS和HGC27细胞中Nrf2泛素化信号均减弱。 结论 PNS可抑制GC细胞增殖、迁移和侵袭,促进细胞凋亡并提高细胞内氧化应激水平,其作用与调控Keap1-Nrf2信号通路相关蛋白表达及Keap1-Nrf2相互作用有关。

关键词: 三七总皂苷, 胃癌, 细胞凋亡, 活性氧, 氧化应激, Kelch样ECH相关蛋白1, 核因子E2相关因子2

Abstract:

Objective To discuss the effects of Panax notoginseng saponins (PNS) on the biological behavior of gastric cancer (GC) cells and to analyze its relationship with the Kelch-like ECH-associated protein 1 (Keap1)-nuclear factor E2-related factor 2 (Nrf2) signaling pathway. Methods GC cell lines AGS and HGC27 cells and human normal gastric mucosal epithelial cells GES-1 were used as the research objects and treated with different concentrations of PNS. MTT method was used to detect the cell activity in various groups. AGS and HGC27 cells were divided into control group (0 μmol·L-1 PNS group) and 5, 10, and 20 μmol·L-1 PNS groups. Colony formation assay was used to detect the proliferation abilities of the cells in various groups. Transwell chamber assay was used to detect the numbers of migration cells and invasion cells in various groups. 2',7'-dichlorodihydrofluorescein diacetate (DCFH-DA) fluorescent probe method was used to detect the reactive oxygen species (ROS) levels in the cells in various groups. Western blotting method was used to detect the expression levels of apoptosis-related proteins B-cell lymphoma 2 (Bcl-2), Bcl-2-associated X protein (Bax), Bcl-2-associated death promoter (Bad), cysteinyl aspartate-specific proteinase 3 (Caspase-3), and cleaved Caspase-3, as well as Keap1 and Nrf2 proteins in the cells in various groups. Co-immunoprecipitation (Co-IP) method combined with Western blotting method was used to detect the interaction between Keap1 and Nrf2 and Nrf2 ubiquitination in the cells in various groups. Results After treatment for 48 h, compared with control group, the activities of AGS and HGC27 cells in 5, 10, and 20 μmol·L-1 PNS groups were significantly decreased (P<0.001), while there was no statistically significant difference in the activity of GES-1 cells (P>0.05). Compared with control group, the colony formation numbers, numbers of migration cells, and numbers of invasion cells of AGS and HGC27 cells in 5, 10, and 20 μmol·L-1 PNS groups were significantly decreased (P<0.001), while the apoptotic rates and the ROS levels in the cells in 5, 10, and 20 μmol·L-1 PNS groups were significantly increased (P<0.05 or P<0.01). Compared with control group, the expression levels of Bcl-2 and Nrf2 proteins in AGS and HGC27 cells in 5, 10, and 20 μmol·L-1 PNS groups were significantly decreased (P<0.001), while the expression levels of Bad, Bax, cleaved Caspase-3, and Keap1 proteins were significantly increased (P<0.001). Compared with control group, the co-precipitation signals of Keap1 and Nrf2 in AGS and HGC27 cells in PNS group were increased, while the ubiquitination signals of Nrf2 in AGS and HGC27 cells were decreased. Conclusion PNS inhibits the proliferation, migration, and invasion of GC cells, promotes cell apoptosis, and enhances intracellular oxidative stress level. Its effect is related to the regulation of the expression of Keap1-Nrf2 signaling pathway-related proteins and the interaction between Keap1 and Nrf2.

Key words: Panax notoginseng saponins, Gastric cancer, Apoptosis, Reactive oxygen species, Oxidative stress, Kelch-like ECH-associated protein 1, Nuclear factor E2-related factor 2

中图分类号: 

  • R285.5