天然产物研究与开发 ›› 2025, Vol. 37 ›› Issue (12): 2205-2211.doi: 10.16333/j.1001-6880.2025.12.003 cstr: 32307.14.1001-6880.2025.12.003

• 研究论文 • 上一篇    下一篇

基于VEGF/ERK信号通路的紫草素调控EMT抑制三阴性乳腺癌侵袭和迁移机制研究

陈宗跃1,2,陈  炜3,龙思涛1,许铁龙 1,2,王  胤1,2*   

  1. 1贵阳康养职业大学药学院;2贵州省药用资源康养产品工程研究中心,贵阳 550081;3遵义医科大学第一临床学院,遵义 563006
  • 出版日期:2025-12-30 发布日期:2025-12-29
  • 基金资助:
    贵州省中医药管理局项目(QZYY-2024-132);贵阳康养职业大学青年科技项目(贵康大K2022-8);贵阳康养职业大学重点科技项目(贵康大K2023-1)

Study on the mechanism of shikonin regulating EMT and inhibiting the invasion and migration of triple negative breast cancer based on VEGF/ERK signaling pathway

CHEN Zong-yue1,2,CHEN Wei3,LONG Si-tao1,XU Tie-long1,2,WANG Yin1,2*   

  1. 1School of Pharmacy,Guiyang Healthcare Vocational University;2Guizhou Engineering Research Center for Medicinal Resources and Recreational Products,Guiyang 550081,China;3First Clinical College,Zunyi Medical University,Zunyi 563006,China
  • Online:2025-12-30 Published:2025-12-29

摘要:

本研究旨在探讨紫草素(shikonin,SK)调控血管内皮生长因子(vascular endothelial growth factor,VEGF)/细胞外信号调节激酶(extracellular signal-regulated kinase,ERK)信号通路影响上皮间质转化(epithelial-mesenchymal transition,EMT)抑制三阴性乳腺癌(triple-negative breast cancer,TNBC)的侵袭和迁移的作用机制。采用TNBC细胞系MDA-MB-231细胞为实验对象,通过噻唑蓝(thiazolyl blue tetrazolium bromide,MTT)比色法评估SK对细胞增殖的影响,划痕修复实验和Transwell侵袭实验考察SK对TNBC细胞迁移和侵袭能力的抑制作用。蛋白免疫印迹(Western blot,WB)法检测VEGF、ERK1/2及EMT相关上皮钙黏蛋白(E-cadherin)、波形蛋白(Vimentin)、蜗牛蛋白(Snail)的表达。免疫荧光试验检测SK对E-cadherin与Vimentin表达的影响。结果表明,与对照组(Con)相比,SK能显著抑制TNBC细胞的增殖、迁移和侵袭(P<0.05)。WB结果显示,与Con组比较,SK显著降低了VEGF、ERK1/2、Vimentin、Snail蛋白的表达(P<0.05),上调了E-cadherin蛋白的表达(P<0.05),VEGF特异性抑制剂贝伐珠单抗(bevacizumab,Beb)可显著降低VEGF、ERK1/2表达,与SK联合作用后VEGF、ERK1/2表达进一步下调(P<0.05)。免疫荧光结果显示,SK作用后E-cadherin蛋白升高,Vimentin蛋白表达下降。由此可知,SK通过VEGF/ERK信号通路调控细胞的EMT过程,抑制了三阴性乳腺癌细胞的侵袭和迁移。

关键词: 紫草素, 血管内皮生长因子/细胞外信号调节激酶信号通路, 上皮间质转化, 三阴性乳腺癌, 细胞侵袭, 细胞迁移

Abstract:

The aim of this study was to investigate the mechanism of shikonin (SK) modulation of the vascular endothelial growth factor(VEGF)/extracellular signal-regulated kinase (ERK) signaling pathway affecting epithelial mesenchymal transition (EMT) to inhibit invasion and migration of triple-negative breast cancer(TNBC). The MDA-MB-231 cells of TNBC cell line were used as experimental subjects, and the effect of SK on cell proliferation was assessed by thiazolyl blue tetrazolium bromide (MTT) colorimetric assay, and the inhibitory effect of SK on the migration and invasion ability of TNBC cells was investigated by scratch repair assay and Transwell invasion assay. Western blot (WB) assay was performed to detect the expression of VEGF, ERK1/2 and EMT-associated proteins, including E-cadherin, Vimentin, and Snail. Immunofluorescence assay was performed to detect the effect of SK on the expression of E-cadherin and Vimentin. Compared with the control group (Con), the results showed that SK significantly inhibited the proliferation, migration and invasion of TNBC cells (P<0.05). Compared with the Con group, WB results showed that SK significantly decreased the expression of VEGF, ERK1/2, Vimentin, and Snail (P<0.05) and up-regulated the expression of E-cadherin (P<0.05), and the VEGF-specific inhibitor bevacizumab (Beb) significantly decreased the expression of VEGF and ERK1/2, and the expression of VEGF and ERK1/2 were further downregulated after combinating with SK (P<0.05). Immunofluorescence results showed that the expression of E-cadherin was elevated, and the expression of Vimentin was decreased by the SK. It can be seen that SK inhibited the invasion and migration of triple-negative breast cancer cells by regulating the cellular EMT process through the VEGF/ERK signaling pathway.

Key words:

中图分类号:  R969