天津医药 ›› 2025, Vol. 53 ›› Issue (5): 449-455.doi: 10.11958/20250340

• 细胞与分子生物学 •    下一篇

异硫氰酸苄酯联合索拉非尼治疗未分化甲状腺癌机制探讨

马春梅1,2(), 于鹏3, 张其程4, 杨磊5, 李棣华5, 谭建1, 孟召伟1,()   

  1. 1 天津医科大学总医院核医学科,天津市功能影像重点实验室和天津市影像医学研究所(邮编300052)
    2 华北理工大学附属医院影像中心
    3 核医学科
    4 天津医科大学总医院,天津市肺癌转移与肿瘤微环境重点实验室,天津市肺癌研究所
    5 天津市南开医院,天津市急腹症相关器官损伤及ITCWM修复重点实验室,急性腹部疾病研究所
  • 收稿日期:2025-01-22 修回日期:2025-03-13 出版日期:2025-05-15 发布日期:2025-05-28
  • 通讯作者: △ E-mail:zmeng@tmu.edu.cn
  • 作者简介:马春梅(1984),女,博士在读,主要从事肿瘤与血管病变影像学诊断方面研究。E-mail:karles@126.com
  • 基金资助:
    国家自然科学基金资助项目(81971650);天津市科委基金资助项目(21JCYBJC01820);天津市医学重点学科(专科)建设项目(TJYXZDXK-001A)

Mechanism study of benzyl isothiocyanate combined with sorafenib in the treatment of anaplastic thyroid cancer

MA Chunmei1,2(), YU Peng3, ZHANG Qicheng4, YANG Lei5, LI Dihua5, TAN Jian1, MENG Zhaowei1,()   

  1. 1 Department of Nuclear Medicine, Tianjin Medical University General Hospital, Tianjin Key Lab of Functional Imaging & Tianjin Institute of Radiology, Tianjin 300052, China
    2 Imaging Center
    3 Department of Nuclear Medicine, North China University of Science and Technology Affiliated Hospital
    4 Tianjin Medical University General Hospital, Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute
    5 Tianjin Nankai Hospital, Tianjin Key Laboratory of Acute Abdomen Disease Associated Organ Injury and ITCWM Repair, Institute of Acute Abdominal Diseases
  • Received:2025-01-22 Revised:2025-03-13 Published:2025-05-15 Online:2025-05-28
  • Contact: △ E-mail:zmeng@tmu.edu.cn

摘要:

目的 探讨异硫氰酸苄酯(BITC)联合索拉非尼(Sor)治疗未分化甲状腺癌(ATC)的机制。方法 将0、20、30、40和50 μmol/L Sor作用于2种ATC细胞株8505C和CAL-62,采用CCK-8法检测细胞存活率。通过计算联合用药指数测定BITC和Sor的联合用药剂量。将CAL-62和8505C分别用10 μmol/L BITC(BITC组)、10 μmol/L Sor(Sor组)、10 μmol/L BITC和10 μmol/L Sor(BITC+Sor组)联合应用处理24 h,对照组不作处理。CCK-8法检测BITC和Sor的联合用药对ATC细胞活力的影响;流式细胞术分析细胞凋亡情况;Western blot检测核因子(NF)-κB、自噬微管相关蛋白轻链3抗体(LC3B)Ⅱ及Beclin-1表达量;实时荧光定量PCR检测LC3B mRNA水平;将CAL-62细胞皮下注射到小鼠体内形成肿瘤模型,分别腹腔注射BITC(100 mg/kg)、Sor灌胃(30 mg/kg)、BITC与Sor联合处理隔天给药共21 d,Western blot检测肿瘤组织NF-κB、LC3BⅡ及Beclin-1的表达。结果 Sor以浓度依赖性的方式抑制CAL-62和8505C细胞的活力。BITC 10 μmol/L和Sor 10 μmol/L时联合用药指数为0.710,两药有适度协同作用。在8505C和CAL-62细胞中,与对照组相比,BITC组和Sor组细胞活力、Beclin-1及NF-κB蛋白表达水平降低,凋亡率、LC3B mRNA、LC3BⅡ蛋白表达水平升高(P<0.05);与BITC组和Sor组比较,BITC+Sor组细胞活力、Beclin-1及NF-κB蛋白表达降低,凋亡率、LC3B mRNA、LC3BⅡ蛋白表达水平升高(P<0.05)。小鼠移植瘤模型中,BITC+Sor组与BITC组和Sor组比较,LC3BⅡ表达增加,Beclin-1及NF-κB表达水平、肿瘤体积和质量降低(P<0.05)。结论 BITC和Sor联合应用在体外和体内均可通过NF-κB通路抑制ATC细胞,诱导自噬,促进凋亡。

关键词: 甲状腺癌, 未分化, 索拉非尼, 自噬, NF-κB, 异硫氰酸苄酯

Abstract:

Objective To investigate the mechanism of benzyl isothiocyanate (BITC) combined with sorafenib (Sor) in the treatment of anaplastic thyroid cancer (ATC). Methods Two ATC cell lines, 8505C and CAL-62, were treated with Sor at concentrations of 0, 20, 30, 40, and 50 μmol/L. The cell survival rate was assessed using CCK-8 assay. The combined dose of BITC and Sor was determined by calculating combination index (CI). CAL-62 and 8505C cells were exposed to 10 μmol/L BITC (BITC group), 10 μmol/L Sor (Sor group), or a combination of 10 μmol/L BITC and 10 μmol/L Sor (BITC+Sor group) for 24 hours. The control group was not treated. The effects of Sor and BITC on ATC cell viability were evaluated using the CCK-8 method. Apoptosis was analyzed via flow cytometry. Western blot assay was employed to detect the protein expression levels of LC3B Ⅱ, Beclin-1 and nuclear factor (NF)-κB. Real-time fluorescence quantitative PCR was used to quantify the mRNA levels of LC3B. Additionally, CAL-62 cells were subcutaneously injected into mice to establish tumor xenograft model. Mice were treated with BITC (100 mg/kg, intraperitoneal injection), Sor (30 mg/kg, intragastric administration) or a combination of BITC and Sor every other day for 21 days. Finally, the expression levels of LC3B Ⅱ, Beclin-1 and NF-κB in tumor tissue were analyzed by Western blot assay. Results Sor significantly inhibited the viability of CAL-62 and 8505C cells in a concentration-dependent manner. The combination index (CI) was 0.710 at BITC 10 μmol/L and Sor 10 μmol/L, indicating a moderate synergistic effect between the two drugs. In both 8505C and CAL-62 cells, compared with the control group, treatment with BITC or Sor resulted in the decreased cell viability, as well as reduced expression levels of Beclin-1 and NF-κB proteins (P<0.05), and the apoptosis rate, LC3B mRNA and LC3B Ⅱ protein expression levels were significantly increased (P<0.05). When BITC and Sor were combined, the cell viability, Beclin-1 and NF-κB protein expressions were further reduced compared to either drug alone, while the apoptosis rate, LC3B mRNA and LC3B Ⅱ protein expression levels were significantly elevated (P<0.05). In the mouse xenograft tumor model, the BITC+Sor group exhibited increased LC3B Ⅱ expression, along with decreased Beclin-1 and NF-κB expression levels, tumor volume and tumor mass compared to the BITC or Sor groups (P<0.05). Conclusion The combination of BITC and Sor can inhibit ATC cells through NF-κB pathway, induce autophagy and promote apoptosis in vitro and in vivo.

Key words: thyroid carcinoma, anaplastic, sorafenib, autophagy, NF-kappa B, benzyl isothiocyanate

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