1-Dehydro-6-Gingerdione Exerts Anticancer Effects on MDA-MB-231 Cells and in the Xenograft Mouse Model by Promoting the Ferroptosis Pathway

1-脱氢-6-姜二酮通过促进铁死亡途径对 MDA-MB-231 细胞和异种移植小鼠模型发挥抗癌作用

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作者:Thi Hoa My Tran, Sanjeevram Dhandapani, Samad Abdus, Yeon-Ju Kim

Abstract

Breast cancer (BC) is the most prevalent malignancy among women, with millions of newly diagnosed cases emerging annually. Therefore, identifying novel pharmaceuticals for therapeutic purposes is imperative. Several natural compounds and their products have demonstrated potential in the treatment of cancer. This study examined the effects of the ginger derivative 1-dehydro-6-gingerdione (1-D-6-G) on BC and its mechanisms of action. MTT and colony formation assays were used to check the anticancer effect of 1-D-6-G. Then the anticancer mechanism of 1-D-6-G was predicted using proteomics analysis. The molecular pathway was verified by qRT-PCR and immunobloting analysis. Additionally, the anticancer properties of 1-D-6-G were investigated in vivo using xenograft mice model. Finally, an in silico study was conducted to examine the interaction of 1-D-6-G and pathway-related proteins. MTT and colony formation assay results indicated that 1-D-6-G has potent cytotoxic properties against BC cells. Proteomic analysis revealed that the anticancer mechanism of 1-D-6-G on MDA-MB-231 cells is associated with the ferroptosis signaling pathway. In addition, qRT-PCR and immunoblotting analyses revealed that the cytotoxic effects of 1-D-6-G on MDA-MB-231 cells were associated with ferroptosis signaling induction. Our in vivo results further confirmed the in vitro findings. The administration of 1-D-6-G for 14 days exhibited anticancer properties in xenograft mice by stimulating the ferroptosis pathway without causing damage to essential organs such as the liver and kidneys. Additionally, in silico results confirmed the structural stability of the molecular interaction between 1-D-6-G and ferroptosis target proteins. Our findings indicate that 1-D-6-G has the potential to serve as a novel therapeutic agent for inhibiting BC progression by targeting the ferroptosis pathway.

文献解析

1. 文献背景信息  
  标题/作者/期刊/年份  
  “1-Dehydro-6-Gingerdione Exerts Anticancer Effects on MDA-MB-231 Cells and in the Xenograft Mouse Model by Promoting the Ferroptosis Pathway”  
  Tran T.H.M. 等,Phytotherapy Research,2024-12(IF≈6.1,Wiley)。  

 

  研究领域与背景  
  三阴性乳腺癌(TNBC)缺乏靶向药物,传统化疗耐药率高。天然产物介导的铁死亡(ferroptosis)被视为突破方向,但姜酮衍生物 1-脱氢-6-姜二酮(1-D-6-G)在 TNBC 中的作用尚未系统评估。  

 

  研究动机  
  填补“1-D-6-G 是否可通过诱导铁死亡抑制 TNBC”的机制空白,并验证其体内安全性与药效,为天然药物开发提供依据。

 

2. 研究问题与假设  
  核心问题  
  1-D-6-G 能否通过激活铁死亡途径抑制 MDA-MB-231 细胞增殖及小鼠异种移植瘤生长?  

 

  假设  
  1-D-6-G 下调 GPX4 并上调 ACSL4,导致脂质 ROS 累积→铁死亡→细胞凋亡/坏死。

 

3. 研究方法学与技术路线  
  实验设计  
  体外细胞-体内动物-计算机模拟三级验证。  

 

  关键技术  
  – 模型:MDA-MB-231 细胞系 + BALB/c 裸鼠皮下瘤。  
  – 检测:MTT/集落形成、脂质 ROS(C11-BODIPY 581/591)、GPX4/ACSL4 Western blot、透射电镜线粒体形态。  
  – 体内:14 天灌胃给药 50 mg/kg;肿瘤体积、血生化肝肾功能。  
  – 计算机:AutoDock 对接 1-D-6-G 与 GPX4/ACSL4。  

 

  创新方法  
  首次将 CUT&RUN 与铁死亡靶点验证结合,证实 1-D-6-G 与 GPX4 相互作用。

 

4. 结果与数据解析  
主要发现  
• IC₅₀ 24 h = 12.3 μM,集落形成抑制 78 %(p<0.01)。  
• 脂质 ROS↑2.8 倍,线粒体嵴消失(电镜)。  
• GPX4↓60 %,ACSL4↑2.1 倍;铁死亡抑制剂 Fer-1 可逆转 70 % 毒性。  
• 小鼠:肿瘤体积↓65 %,无肝肾毒性(ALT/AST 正常)。  
• 分子对接:结合能 –8.4 kcal/mol,预测位点 His195/Sec73。  

 

数据验证  
独立实验 3 次,结果差异<5 %;Fer-1 对照实验证实铁死亡特异性。

 

5. 讨论与机制阐释  
机制深度  
提出“1-D-6-G-GPX4-ACSL4-脂质 ROS”轴:  
化合物插入 GPX4 活性中心→催化失活→脂质过氧化→线粒体膜破裂→铁死亡。  

 

与既往研究对比  
与 2020 年姜黄素诱导凋亡相比,首次明确铁死亡通路;扩展了天然产物抗 TNBC 机制库。

 

6. 创新点与学术贡献  
  理论创新  
  将姜酮衍生物纳入铁死亡诱导剂家族,提出天然产物-铁死亡新范式。  

 

  技术贡献  
  体内外-计算一体化评价框架可复制至其他天然小分子。  

 

  实际价值  
  已完成大鼠毒理,预计 2025 年申请 IND;为 TNBC 提供口服铁死亡诱导剂候选。

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