Objectives:Epibrassinolide(EBR)is a steroid hormone with anti-tumor properties.Nevertheless,its potential to inhibit gastric cancer(GC)cells remains unknown.The aim of this research was to examine the effects of EBR o...Objectives:Epibrassinolide(EBR)is a steroid hormone with anti-tumor properties.Nevertheless,its potential to inhibit gastric cancer(GC)cells remains unknown.The aim of this research was to examine the effects of EBR on GC cells and to investigate the specific mechanism of EBR.Methods:A cell counting kit-8(CCK-8)assay was utilized to determine cell survival rates.The investigation of apoptosis,cell cycle progression,and reactive oxygen species(ROS)levels was performed using flow cytometry.To detect cell migration,a wound-healing assay was performed on AGS cells.Furthermore,western blotting assay was utilized to determine protein expression levels.Results:The CCK-8 assay demonstrated that EBR reduced the survival rates of AGS,KATO-3,and MKN-45 cells,while causing only minor toxicity to normal cells.The apoptosis assay indicated that EBR induced AGS cell apoptosis through a mitochondria-mediated pathway.Western blotting results demonstrated that EBR induced AGS cell apoptosis via mitogen-activated protein kinase(MAPK)/signal transducer and activator of transcription 3(STAT3)/nuclear factor kappa B(NF-κB)signaling pathway.Further,after treating AGS cells with EBR,the accumulation of intracellular ROS markedly increased.EBR also induced G2/M phase cell cycle arrest in AGS cells by downregulating phospho-protein kinase B(p-AKT),cyclin-dependent kinase 1/2(CDK1/2),and cyclin B1 expression levels,while simultaneously upregulating p21 and p27 expression levels.EBR inhibited AGS cell migration by downregulating p-AKT,phosphorylated-glycogen synthase kinase 3β(p-GSK-3β),andβ-catenin expression levels and upregulating E-cadherin expression levels.However,these effects were reversed by pretreatment with N-acetylcysteine(NAC).Conclusion:EBR regulates AGS cells by inducing apoptosis and G2/M phase arrest,while also inhibiting cell migration,all of which are mediated through ROS-mediated signaling pathways.Ultimately,these effects suggest a significant role for EBR in regulating cellular processes within AGS cells.展开更多
It has been confirmed that ABA promotes the senescence of detached leaves since this phenomenon was reported. ABA serves as an endogenous factor in leaf senescence. This hypothesis has been written into reviews and mo...It has been confirmed that ABA promotes the senescence of detached leaves since this phenomenon was reported. ABA serves as an endogenous factor in leaf senescence. This hypothesis has been written into reviews and monographs, and generally recognized. But our investigations indicate that the senescence of cucumber展开更多
基金supported by the Heilongjiang Province Key Research and Development Plan Guidance Project[Grant No.GZ20220039]the Central Government Supports the Local College Reform and Development Fund Talent Training Project[Grant No.2020GSP16].
文摘Objectives:Epibrassinolide(EBR)is a steroid hormone with anti-tumor properties.Nevertheless,its potential to inhibit gastric cancer(GC)cells remains unknown.The aim of this research was to examine the effects of EBR on GC cells and to investigate the specific mechanism of EBR.Methods:A cell counting kit-8(CCK-8)assay was utilized to determine cell survival rates.The investigation of apoptosis,cell cycle progression,and reactive oxygen species(ROS)levels was performed using flow cytometry.To detect cell migration,a wound-healing assay was performed on AGS cells.Furthermore,western blotting assay was utilized to determine protein expression levels.Results:The CCK-8 assay demonstrated that EBR reduced the survival rates of AGS,KATO-3,and MKN-45 cells,while causing only minor toxicity to normal cells.The apoptosis assay indicated that EBR induced AGS cell apoptosis through a mitochondria-mediated pathway.Western blotting results demonstrated that EBR induced AGS cell apoptosis via mitogen-activated protein kinase(MAPK)/signal transducer and activator of transcription 3(STAT3)/nuclear factor kappa B(NF-κB)signaling pathway.Further,after treating AGS cells with EBR,the accumulation of intracellular ROS markedly increased.EBR also induced G2/M phase cell cycle arrest in AGS cells by downregulating phospho-protein kinase B(p-AKT),cyclin-dependent kinase 1/2(CDK1/2),and cyclin B1 expression levels,while simultaneously upregulating p21 and p27 expression levels.EBR inhibited AGS cell migration by downregulating p-AKT,phosphorylated-glycogen synthase kinase 3β(p-GSK-3β),andβ-catenin expression levels and upregulating E-cadherin expression levels.However,these effects were reversed by pretreatment with N-acetylcysteine(NAC).Conclusion:EBR regulates AGS cells by inducing apoptosis and G2/M phase arrest,while also inhibiting cell migration,all of which are mediated through ROS-mediated signaling pathways.Ultimately,these effects suggest a significant role for EBR in regulating cellular processes within AGS cells.
基金Project supported by the National Natural Science Foundation of China
文摘It has been confirmed that ABA promotes the senescence of detached leaves since this phenomenon was reported. ABA serves as an endogenous factor in leaf senescence. This hypothesis has been written into reviews and monographs, and generally recognized. But our investigations indicate that the senescence of cucumber
