Csn-B联合伊马替尼通过Nur77/Pim-1/Drp1信号通路对慢性髓系白血病细胞凋亡的影响
Effect of Csn-B Combined with Imatinib on Apoptosis of Chronic Myeloid Leukemia Cells through Nur77/Pim-1/Drp1 Pathway
宫宇心 1杨卓婧 1曹济民 1刘慧敏2
作者信息
- 1. 山西医科大学基础医学院生理学教研室,山西太原 030001
- 2. 山西医科大学第二医院血液科,山西太原 030001
- 折叠
摘要
目的:探讨Nur77特异性激动剂Csn-B联合伊马替尼通过促进Nur77的表达发挥抗慢性髓系白血病细胞活性,并探讨其信号通路的潜在作用.方法:首先应用CCK-8、Transwell法分别检测单独Csn-B、伊马替尼以及两者联合对K562细胞增殖迁移的抑制作用;进一步通过流式细胞术分别检测Csn-B、伊马替尼以及两者联合处理K562细胞的凋亡率,Western blot检测K562细胞中凋亡相关蛋白Nur77、Pim-1、Drp1、p-Drp1 S616、Bcl-2和Bax的表达水平变化;最后再分别检测Csn-B、伊马替尼以及两者联合处理K562细胞活性氧的表达水平.结果:在GSE43754数据集中慢性髓系白血病患者Nur77水平较正常人群显著下降(P＜0.001).Csn-B联合伊马替尼可以显著抑制K562细胞的增殖和迁移(均P＜0.001),诱导K562细胞凋亡(P＜0.001).Csn-B可以促进K562细胞中Nur77的表达,且与伊马替尼联合应用后可起到协同作用,增强伊马替尼的敏感性.Csn-B与伊马替尼联合处理较单药处理更能显著增强K562细胞内及线粒体内的ROS水平(均P＜0.001).结论:Csn-B联合伊马替尼可通过Nur77/Pim-1/Drp1通路增强细胞活性氧的表达,诱导K562细胞凋亡.
Abstract
Objective:To investigate the anti-chronic myelogenous leukemia(CML)activity of Nur77-specific agonist Csn-B combined with imatinib by promoting Nur77 expression,and explore the potential role of its signaling pathway.Methods:Firstly,CCK-8 and Transwell assay were used to detect the inhibitory effects of Csn-B,imatinib,and their combination on the proliferation and migration of K562 cells.Furthermore,the apoptosis rate of K562 cells treated with Csn-B,imatinib,and their combination was detected by flow cytometry.The expression levels of Nur77,Pim-1,Drp1,p-Drp1 S616,Bcl-2 and Bax in K562 cells were detected by Western blot.Finally,the expression levels of reactive oxygen species(ROS)in K562 cells treated with Csn-B,imatinib and their combination were detected by immunofluorescence assay.Results:The level of Nur77 in CML patients decreased significantly compared with normal population in dataset of GSE43754(P＜0.001).Csn-B combined with imatinib could significantly inhibit the proliferation and migration of K562 cells(both P＜0.001),and induce apoptosis(P＜0.001).Csn-B promoted Nur77 expression in K562 cells,and synergistically enhanced imatinib sensitivity when combined with imatinib.Csn-B combined with imatinib could significantly enhanced ROS levels in K562 cells and mitochondria compared with single-drug treatment(both P＜0.001).Conclusion:Csn-B combined with imatinib can enhance ROS expression and induce apoptosis of K562 cells through Nur77/Pim-1/Drp1 pathway.
关键词
慢性髓系白血病/伊马替尼耐药/Csn-B/Nur77/线粒体分裂Key words
chronic myelogenous leukemia/imatinib resistance/Csn-B/Nur77/mitochondrial fission引用本文复制引用
基金项目
国家自然科学基金青年基金(81800171)
出版年
2024
NETL
NSTL
万方数据