吉林大学学报(医学版) ›› 2023, Vol. 49 ›› Issue (4): 1018-1026.doi: 10.13481/j.1671-587X.20230424

• 基础研究 • 上一篇    

槲皮素对人肺癌A549细胞移植瘤模型小鼠移植瘤生长和肺转移及细胞侵袭和迁移的影响及其机制

靳莉,张小红(),胡朝阳,李凤芝,崔永亮,李杨,刘倩倩,乔艳俊   

  1. 郑州大学附属郑州中心医院呼吸与危重症医学科,河南 郑州 450000
  • 收稿日期:2022-10-09 出版日期:2023-07-28 发布日期:2023-07-26
  • 通讯作者: 张小红 E-mail:hyywang2000@126.com
  • 作者简介:靳 莉(1981-),女,山东省单县人,副主任医师,主要从事慢性咳嗽和肺部感染方面的研究。
  • 基金资助:
    河南省科技厅科技攻关项目(182102310314)

Effects of quercetin on growth and lung metastasis of transplanted tumor and cell invasion, and cell migration in human lung cancer A549 cells transplanted tumor model mice and their mechanisms

Li JIN,Xiaohong ZHANG(),Chaoyang HU,Fengzhi LI,Yongliang CUI,Yang LI,Qianqian LIU,Yanjun QIAO   

  1. Department of Respiratory and Critical Care Medicine,Affiliated Zhengzhou Central Hospital,Zhengzhou University,Zhengzhou 450000,China
  • Received:2022-10-09 Online:2023-07-28 Published:2023-07-26
  • Contact: Xiaohong ZHANG E-mail:hyywang2000@126.com

摘要:

目的 探讨槲皮素(QUE)对人肺癌A549细胞移植瘤模型小鼠移植瘤生长、肺转移、细胞侵袭和迁移的影响,并阐明其相关机制。 方法 小鼠分为对照组(无干预)、阳性药物组(5.0 mg·kg-1 顺铂)、低剂量(12.5 mg·kg-1)QUE组、中剂量(25.0 mg·kg-1)QUE组和高剂量(50.0 mg·kg-1)QUE组,除对照组外其余各组小鼠采用A549细胞制备移植瘤模型,治疗10 d后计算各组小鼠肿瘤质量抑制率和肺转移抑制率。体外培养人肺癌A549细胞,分为正常对照组、QUE组、QUE+Runt相关转录因子3(Runx3)阴性对照序列(si-NC)(QUE+si-NC)组和QUE+Runx3小干扰序列(si-Runx3)(QUE+si-Runx3)组。实时荧光定量PCR(RT-qPCR)法检测各组A549细胞中Runt mRNA表达水平,CCK-8法检测各组细胞增殖抑制率,Transwell小室实验检测各组A549细胞中侵袭细胞数和迁移细胞数,Western blotting法检测各组小鼠移植瘤组织及各组A549细胞中Runx3、Wnt3a、β-连环蛋白(β-catenin)、基质金属蛋白酶2(MMP-2)和基质金属蛋白酶9(MMP-9)蛋白表达水平。 结果 与对照组比较,阳性药物组及低、中和高剂量QUE组小鼠肿瘤质量抑制率、肺转移抑制率和移植瘤组织中Runx3蛋白表达水平均明显升高(P<0.05),移植瘤组织中Wnt3a、β-catenin、MMP-2和MMP-9蛋白表达水平均明显降低(P<0.05)。与正常对照组比较,QUE组A549细胞增殖抑制率、A549细胞中Runx3 mRNA及蛋白表达水平均明显升高(P<0.05),侵袭细胞数和迁移细胞数明显减少(P<0.05),A549细胞中Wnt3a、β-catenin、MMP-2和MMP-9蛋白表达水平均明显降低(P<0.05);与QUE+si-NC组比较,QUE+si-Runx3组A549细胞增殖抑制率、A549细胞中Runx3 mRNA及蛋白表达水平均明显降低(P<0.05),侵袭细胞数和迁移细胞数明显增加(P<0.05),A549细胞中Wnt3a、β-catenin、MMP-2和MMP-9蛋白表达水平均明显升高(P<0.05)。 结论 QUE可抑制人肺癌A549细胞移植瘤小鼠移植瘤转移和侵袭,其机制可能是通过促进Runx3表达抑制Wnt/β-catenin信号通路,进而抑制肺癌A549细胞侵袭和迁移能力。

关键词: 槲皮素, 肺肿瘤, A549细胞, 细胞侵袭, 细胞迁移, Runt相关转录因子3, Wnt/β-catenin信号通路

Abstract:

Objective To detect the effect of quercetin (QUE) on the growth, lung metastasis,cell invasion and migration of transplanted tumor of the human lung cancer A549 cells transplanted tumor in the mice, and to clarify its related mechanism. Methods The mice were divided into control group (no intervention), positive drug group (5 mg·kg-1cisplatin) and low, medium and high doses (12.5, 25.0,and 50.0 mg·kg-1 QUE)of QUE groups.Except for control group,the mice in other groups were constructed transplanted tumor models using A549 cells.The inhibitory rates of tumor weights and inhibitory rates of lung metastasis of mice in various groups were detected after treated for 10 d. The human lung cancer A549 cells were cultured in vitro and divided into normal control group, QUE group, QUE+Runt related transcription factor 3 (Runx3) negative control sequence (si-NC) (UE+si-NC) group, and QUE+Runx3 interference sequence (si-Runx3) (QUE+si-Runx3) group. Real-time fluorescence quantitative PCR (RT-qPCR) method was used to detect the expression levels of Runt mRNA in the A549 cells in various groups; CCK-8 assay was used to detect inhibitory rates of proliferation of cells in various groups; Transwell chamber experiment was used to detect the numbers of invasion and migration cells in various groups; Western blotting method was used to detect the expression levels of Runx3, Wnt3a, β-catenin, matrix metallopeptidase-2 (MMP-2),and matrix metallopeptidase-9 (MMP-9) proteins in cells in various groups. Results Compared with control group, the inhibitory rate of tumor weight, inhibitory rate of lung metastasis and the expression levels of Runx3 protein in transplant tumor tissue of the mice in positive drug group, low, medium and high doses of QUE groups were increased(P<0.05), and the expression levels of Wnt3a, β-catenin, MMP-2, and MMP-9 proteins were decreased (P<0.05). Compared with normal control group,the inhibitory rate of proliferation of the A549 cells in QUE group,the expression levels of Runx3 mRNA and protein in the A549 cells in QUE group were significantly increased (P<0.05), the numbers of invasion and migration cells were decreased (P<0.05),the expression levels of Wnt3a, β-catenin, MMP-2,and MMP-9 proteins in the cells were significantly decreased (P<0.05). Compared with QUE+si-NC group, the inhibitory rate of proliferation of the A549 cells in QUE group,the expression levels of Runx3 mRNA and protein in the A549 cells in QUE+si-Runx3 group were significantly decreased (P<0.05), the numbers of invasion and migration cells,the expression levels of Wnt3a, β-catenin, MMP-2,and MMP-9 proteins in the cells were significantly increased (P<0.05). Conclusion QUE can inhibit the metastasis and invasion of transplanted tumor of the mice, and its mechanism may be related to promoting the Runx3 expression and inhibiting the Wnt/β-catenin signaling pathway, then inhibiting the invasion and migration of the lung cancer A549 cells.

Key words: Quercetin, Lung neoplasm, A549 cells, Cell invasion, Cell migration, Runt related transcription factor 3, Wnt/β-catenin signaling pathway

中图分类号: 

  • R734.2