吉林大学学报(医学版) ›› 2026, Vol. 52 ›› Issue (2): 410-417.doi: 10.13481/j.1671-587X.20260213

• 基础研究 • 上一篇    

亚硒酸钠对乳腺癌阿霉素耐药MCF-7/ADR细胞生物学行为的影响

郑瑶1,付明霞2,王蔚琛1,陈微微3,韩宇晨1,白玉1(),安佳佳1()   

  1. 1.滨州医学院附属医院检验科,山东 滨州 256603
    2.山东省滨州市人民医院病理科,山东 滨州 256603
    3.滨州医学院附属医院医学研究中心,山东 滨州 256603
  • 收稿日期:2025-04-20 接受日期:2025-06-12 出版日期:2026-03-28 发布日期:2026-04-15
  • 通讯作者: 白玉,安佳佳 E-mail:xue_yubai@126.com;jiajiabest_007@163.com
  • 作者简介:郑 瑶(2000-),女,陕西省榆林市人,在读硕士研究生,主要从事亚硒酸钠抗肿瘤方面的研究。
  • 基金资助:
    山东省科技厅自然科学基金资助项目(ZR2022QH192);山东省卫健委医药卫生科技发展计划项目(202403020449);山东省卫健委医药卫生科技发展计划项目(2019WS0321);山东省卫健委医药卫生科技发展计划项目(202302080488);山东省滨州市卫健委临床重点专科建设资助项目(BZSLCZDZK-08)

Effect of sodium selenite on biological behaviors of breast cancer doxorubicin-resistant MCF-7/ADR cells

Yao ZHENG1,Mingxia FU2,Weichen WANG1,Weiwei CHEN3,Yuchen HAN1,Yu BAI1(),Jiajia AN1()   

  1. 1.Department of Laboratory,Affiliated Hospital,Binzhou Medical University,Binzhou 256603,China
    2.Department of Pathology,People’s Hospital,Binzhou City,Shandong Province,Binzhou 256603,China
    3.Medical Research Center,Affiliated Hospital,Binzhou Medical University,Binzhou 256603,China
  • Received:2025-04-20 Accepted:2025-06-12 Online:2026-03-28 Published:2026-04-15
  • Contact: Yu BAI,Jiajia AN E-mail:xue_yubai@126.com;jiajiabest_007@163.com

摘要:

目的 探讨亚硒酸钠(SS)对乳腺癌阿霉素耐药细胞MCF-7/ADR增殖、迁移、凋亡和肿瘤干性的影响,并阐明其作用机制。 方法 乳腺癌阿霉素耐药MCF-7/ADR细胞经不同浓度(0、5、10、20、40和80 μmol·L-1)SS处理48 h后,采用细胞计数试剂盒8(CCK-8)法检测各组细胞增殖活性,确定后续实验的用药浓度。将MCF-7/ADR细胞分为对照组(0 μmol·L-1 SS)、5 μmol·L-1 SS组、10 μmol·L-1 SS组和20 μmol·L-1 SS组,培养24、48和72 h后,采用CCK-8法检测各组细胞增殖活性,克隆形成实验检测各组细胞克隆形成数,流式细胞术检测各组细胞凋亡率,细胞划痕实验和Transwell小室实验检测各组细胞划痕愈合率及细胞迁移数,干细胞成球实验检测各组细胞的球体形成数,Western blotting法检测各组细胞中ATP结合盒转运蛋白B亚家族成员1(ABCB1)、微管相关蛋白轻链3-Ⅱ(LC3-Ⅱ)和p62蛋白表达水平。 结果 与0 μmol·L-1 SS组比较,培养48和72 h时,5、10、20及40 μmol·L-1 SS组细胞增殖活性均明显降低(P<0.01)。与0 μmol·L-1 SS组比较,10和20 μmol·L-1 SS组细胞克隆形成数均明显减少(P<0.01)。与对照组比较,5、10和20 μmol·L-1 SS组细胞凋亡率无明显变化,差异无统计学意义(P>0.05)。与对照组比较,10和20 μmol·L-1 SS组细胞划痕愈合率均明显降低(P<0.01),5、10和20 μmol·L-1 SS组迁移细胞数均明显降低(P<0.01)。培养14 d后,与对照组比较,5、10和20 μmol·L-1 SS组细胞中球体形成数均明显降低(P<0.05或P<0.01)。与对照组比较,5、10和20 μmol·L-1 SS组细胞中ABCB1及p62蛋白表达水平均明显降低(P<0.05或P<0.01),10和20 μmol·L-1 SS组细胞中LC3-Ⅱ蛋白表达水平明显升高(P<0.01)。 结论 SS可抑制MCF-7/ADR细胞增殖、迁移和成球能力,诱导细胞自噬,下调ABCB1蛋白表达水平。

关键词: 亚硒酸钠, 耐药性, 乳腺肿瘤, 自噬, 阿霉素, 细胞增殖

Abstract:

Objective To discuss the effect of sodium selenite (SS) on the proliferation, migration, apoptosis, and tumor stemness of breast cancer doxorubicin-resistant MCF-7/ADR cells, and to clarify its mechanism. Methods After the breast cancer doxorubicin-resistant MCF-7/ADR cells were treated with various concentrations (0, 5, 10, 20, 40, and 80 μmol·L-1) of sodium selenite (SS) for 48 h, cell counting kit-8 (CCK-8) method was used to detect the proliferation activities of the cells in various groups and the drug concentration for the subsequent experiments was determined. The MCF-7/ADR cells were divided into control group (0 μmol·L-1 SS), 5 μmol·L-1 SS group, 10 μmol·L-1 SS group, and 20 μmol·L-1 SS group. After cultured for 24, 48, and 72 h, CCK-8 method was used to detect the proliferation activities of the cells in various groups; colony formation assay was used to detect the numbers of colony formation of the cells in various groups; flow cytometry was used to detect the apoptotic rates of the cells in various groups; wound healing assay and Transwell chamber assay were used to detect the wound healing rates and the numbers of migration cells in various groups; sphere formation assay was used to detect the numbers of sphere formation in the cells in various groups; Western blotting method was used to detect the expression levels of ATP-binding cassette transporter B subfamily member 1 (ABCB1), microtubule-associated protein 1 light chain 3-Ⅱ (LC3-Ⅱ), and p62 proteins in the cells in various groups. Results Compared with 0 μmol·L-1 SS group, after cultured for 48 and 72 h, the proliferation activities of the MCF-7/ADR cells in 5, 10, 20, and 40 μmol·L-1 SS groups were significantly decreased (P<0.01). Compared with 0 μmol·L-1 SS group, the numbers of clone formation cells in 10 and 20 μmol·L-1 SS groups were significantly decreased (P<0.01). Compared with control group, the apoptotic rates of the cells in 5, 10, and 20 μmol·L?1 SS groups showed no significant difference (P>0.05). Compared with control group, the wound healing rates of the cells in 10 and 20 μmol·L?1 SS groups were significantly decreased (P<0.01), and the numbers of migration cells in 5, 10, and 20 μmol·L?1 SS groups were significantly decreased (P<0.01). After 14 d of culture, compared with control group, the numbers of spheroid formation in the cells in 5, 10, and 20 μmol·L?1 SS groups were significantly decreased (P<0.05 or P<0.01). Compared with control group, the expression levels of ABCB1 and p62 proteins in the cells in 5, 10, and 20 μmol·L?1 SS groups were significantly decreased (P<0.05 or P<0.01), and the expression levels of LC3-Ⅱ protein in the cells in 10 and 20 μmol·L-1 SS groups were significantly increased (P<0.01). Conclusion SS can inhibit the proliferation, migration, and sphere formation ability of the MCF-7/ADR cells, induce cell autophagy, and down-regulate the expression level of ABCB1 protein.

Key words: Sodium selenite, Drug resistance, Breast neoplasm, Autophagy, Doxorubicin, Cell proliferation

中图分类号: 

  • R73-3