中国肿瘤生物治疗杂志2025，Vol.32Issue(9)：934-940,7.DOI:10.3872/j.issn.1007-385x.2025.09.006
刺甘草查尔酮通过激活STING/TBK1/IRF3信号通路抑制肺癌A549细胞的恶性生物学行为和免疫逃逸
Echinatin inhibits malignant behaviors and immune escape of lung cancer A549 cells by activating the STING/TBK1/IRF3 signaling pathway
摘要
Abstract
Objective:To investigate the effects of echinatin(Ech)on the malignant biological behavior and immune escape of lung cancer A549 cells and its underlying mechanisms.Methods:Normal lung epithelial cells(BEAS-2B)and A549 cells were routinely cultured and treated with different concentrations of Ech for 24h.Cell viability was assessed using the MTT assay,and concentrations of 20,30,and 40 μmol/L were selected for subsequent experiments.A549 cells were divided into the following groups:control group(0 μmol/L Ech),low-(20 μmol/L),medium-(30 μmol/L),and high-concentration(40 μmol/L)Ech groups(Ech-L,Ech-M,Ech-H),and high-dose Ech combined with the pathway inhibitor H-151(1.0 μmol/L)group(Ech-H+H-151).Cell proliferation,migration,and invasion were evaluated using the EdU assay,wound-healing assay,and Transwell assay,respectively.Western blotting(WB)assay was applied to detect the expression of proteins related to proliferation,migration,invasion,and the STING/TBK1/IRF3 signaling pathway.Subsequently,A549 cells were co-cultured with CD8+T cells,and trypan blue staining was used to detect CD8+T cell viability.The levels of type Ⅰ interferon(IFN-Ⅰ)in the co-culture supernatants were detected by WB,while the levels of programmed death ligand 1(PD-L1),interleukin-10(IL-10),interleukin-4(IL-4),and transforming growth factor-β(TGF-β)were determined using ELISA.Results:Ech inhibited the viability of A549 cells in a dose-dependent manner(all P<0.05)but had no significant effect on the viability of BEAS-2B cells.Ech dose-dependently inhibited the proliferation,migration and invasion of A549 cells(all P<0.05),as well as the protein expression of cyclinD1,Ki67,MMP2,MMP9,STING,p-TBK1 and p-IRF3(all P<0.05).These effects were partially reversed by H-151.Ech dose-dependently promoted the survival of CD8+T cells co-cultured with A549 cells(all P<0.05),enhanced IFN-Ⅰexpression(all P<0.05),and inhibited the secretion of PD-L1,IL-10,IL-4,and TGF-β(all P<0.05),with H-151 partially reversing these effects(all P<0.05).Conclusion:Ech inhibits malignant biological behavior and immune escape of lung cancer A549 cells by activating the STING/TBK1/IRF3 signaling pathway.关键词
刺甘草查尔酮/STING/TBK1/IRF3信号通路/肺癌/A549细胞/免疫逃逸Key words
echinatin(Ech)/STING/TBK1/IRF3 signaling pathway/lung cancer/A549 cell/immune escape分类
医药卫生引用本文复制引用
曾理,张作军,雷雨广,崔冬玲..刺甘草查尔酮通过激活STING/TBK1/IRF3信号通路抑制肺癌A549细胞的恶性生物学行为和免疫逃逸[J].中国肿瘤生物治疗杂志,2025,32(9):934-940,7.基金项目
信阳市软科学项目(No.0230067) （No.0230067）
