Background:The prognostic significance of the chemokine receptor CCR7 in diffuse large B-cell lymphoma(DLBCL)has been reported previously.However,the detailed mechanisms of CCR7 in DLBCL,particularly regarding its int...Background:The prognostic significance of the chemokine receptor CCR7 in diffuse large B-cell lymphoma(DLBCL)has been reported previously.However,the detailed mechanisms of CCR7 in DLBCL,particularly regarding its interaction with lenalidomide treatment,are not fully understood.Methods:Our study utilized bioinformatics approaches to identify hub genes in SU-DHL-2 cell lines treated with lenalidomide compared to control groups.Immunohistochemical data and clinical information from 122 patients with DLBCL were analyzed to assess the correlation of CCR7 and p-ERK1/2 expression with the prognosis of DLBCL.Furthermore,in vitro and in vivo experiments were conducted to clarify the role of CCR7 in the response of DLBCL to lenalidomide treatment.Results:Our bioinformatics analysis pinpointed CCR7 as a hub gene in the context of lenalidomide treatment in DLBCL.Notably,31.14%and 36.0%(44/122)of DLBCL cases showed positive expression for CCR7 and ERK1/2 respectively,establishing them as independent prognostic factors for adverse outcomes in DLBCL via multivariate Cox regression analysis.Additionally,our studies demonstrated that the external application of the protein CCL21 promoted proliferation,migration,invasion,and activation of the ERK1/2 pathway in SU-DHL-2 and OCI-LY3 cell lines with high levels of CCR7 expression.This effect was mitigated by CCR7 silencing through siRNA,application of ERK inhibitors,or lenalidomide treatment.In vivo experiments reinforced the efficacy of lenalidomide,significantly reducing tumor growth rate,tumor mass,serum total LDH levels,and expression of CCR7 and p-ERK1/2 in a SUDHL-2 xenograft model in nude mice(p<0.05).Conclusion:Our study clarifies the potential role of the CCL21/CCR7/ERK1/2 axis in the therapeutic effects of lenalidomide in DLBCL treatment.展开更多
目的:观察积雪草颗粒对TGF-β1诱导的体外培养的肾小管上皮细胞单核细胞趋化蛋白1(MCP-1)、肝细胞生长因子(HGF)、基质金属蛋白酶-2(MMP-2)、基质金属蛋白酶抑制剂-2(TIMP-2)m RNA表达的影响。方法:将体外培养的大鼠近端肾小管上皮细胞(...目的:观察积雪草颗粒对TGF-β1诱导的体外培养的肾小管上皮细胞单核细胞趋化蛋白1(MCP-1)、肝细胞生长因子(HGF)、基质金属蛋白酶-2(MMP-2)、基质金属蛋白酶抑制剂-2(TIMP-2)m RNA表达的影响。方法:将体外培养的大鼠近端肾小管上皮细胞(NRK52E)随机分为6组:正常对照组、TGF-β1刺激组、积雪草小、中、大剂量组及蒙诺组。培养48h后取出,应用实时荧光定量PCR技术检测细胞MCP-1、HGF、MMP-2、TIMP-2的m RNA表达。结果:与正常对照组比较,TGF-β1刺激组细胞MCP-1、MMP-2、TIMP-2的m RNA表达明显升高(P<0.05),HGF m RNA表达显著增加(P<0.05);各药物干预组与TGF-β1刺激组相比MCP-1、MMP-2、TIMP-2的m RNA明显下降(P<0.05),HGF m RNA表达明显增加(P<0.05);蒙诺组细胞变化与积雪草大剂量组相似。结论:积雪草抗TIF作用可能通过抑制MCP-1、MMP-2、TIMP-2的高表达,上调HGF的表达,调节MMP-2/TIMP-2的平衡而实现,且与其剂量呈正相关。展开更多
目的观察16、32、64周龄自发性高血压大鼠(SHR)海马区炎症相关因子COX-2(环氧合酶-2)、MCP-1(单核细胞趋化蛋白-1)及NF-κB(核转录因子-κB)的表达水平和海马CA1区神经元改变,探讨增龄性高血压脑损伤过程中的炎症反应机制。方法雄性SHR...目的观察16、32、64周龄自发性高血压大鼠(SHR)海马区炎症相关因子COX-2(环氧合酶-2)、MCP-1(单核细胞趋化蛋白-1)及NF-κB(核转录因子-κB)的表达水平和海马CA1区神经元改变,探讨增龄性高血压脑损伤过程中的炎症反应机制。方法雄性SHR及正常对照威斯塔京都大鼠(WKY)各15只,各随机分为3组,每组5只:16周组、32周组和64周组。采用尾动脉测压法测定各组大鼠收缩压(SBP),尼氏染色法观察海马CA1区神经元损伤情况,Real time PCR法检测海马COX-2、MCP-1mRNA表达水平,Western blot法检测NF-κB蛋白表达水平。结果随着年龄升高,SHR大鼠SBP明显升高,海马区NF-κB表达及MCP-1、COX-2mRNA表达均升高,差异有统计学意义(P<0.01,P<0.05),海马CA1区神经元减少,差异有统计学意义(P<0.01)。结论随增龄和血压升高,SHR海马CA1区神经元丢失明显;NF-κB活化及MCP-1、COX-2等炎症因子表达升高可能参与了高血压认知下降的病理过程。展开更多
基金supported by the Key Research and Development Program of Science and Technology Department of Guizhou Province(No.20204Y147).
文摘Background:The prognostic significance of the chemokine receptor CCR7 in diffuse large B-cell lymphoma(DLBCL)has been reported previously.However,the detailed mechanisms of CCR7 in DLBCL,particularly regarding its interaction with lenalidomide treatment,are not fully understood.Methods:Our study utilized bioinformatics approaches to identify hub genes in SU-DHL-2 cell lines treated with lenalidomide compared to control groups.Immunohistochemical data and clinical information from 122 patients with DLBCL were analyzed to assess the correlation of CCR7 and p-ERK1/2 expression with the prognosis of DLBCL.Furthermore,in vitro and in vivo experiments were conducted to clarify the role of CCR7 in the response of DLBCL to lenalidomide treatment.Results:Our bioinformatics analysis pinpointed CCR7 as a hub gene in the context of lenalidomide treatment in DLBCL.Notably,31.14%and 36.0%(44/122)of DLBCL cases showed positive expression for CCR7 and ERK1/2 respectively,establishing them as independent prognostic factors for adverse outcomes in DLBCL via multivariate Cox regression analysis.Additionally,our studies demonstrated that the external application of the protein CCL21 promoted proliferation,migration,invasion,and activation of the ERK1/2 pathway in SU-DHL-2 and OCI-LY3 cell lines with high levels of CCR7 expression.This effect was mitigated by CCR7 silencing through siRNA,application of ERK inhibitors,or lenalidomide treatment.In vivo experiments reinforced the efficacy of lenalidomide,significantly reducing tumor growth rate,tumor mass,serum total LDH levels,and expression of CCR7 and p-ERK1/2 in a SUDHL-2 xenograft model in nude mice(p<0.05).Conclusion:Our study clarifies the potential role of the CCL21/CCR7/ERK1/2 axis in the therapeutic effects of lenalidomide in DLBCL treatment.
文摘目的:观察积雪草颗粒对TGF-β1诱导的体外培养的肾小管上皮细胞单核细胞趋化蛋白1(MCP-1)、肝细胞生长因子(HGF)、基质金属蛋白酶-2(MMP-2)、基质金属蛋白酶抑制剂-2(TIMP-2)m RNA表达的影响。方法:将体外培养的大鼠近端肾小管上皮细胞(NRK52E)随机分为6组:正常对照组、TGF-β1刺激组、积雪草小、中、大剂量组及蒙诺组。培养48h后取出,应用实时荧光定量PCR技术检测细胞MCP-1、HGF、MMP-2、TIMP-2的m RNA表达。结果:与正常对照组比较,TGF-β1刺激组细胞MCP-1、MMP-2、TIMP-2的m RNA表达明显升高(P<0.05),HGF m RNA表达显著增加(P<0.05);各药物干预组与TGF-β1刺激组相比MCP-1、MMP-2、TIMP-2的m RNA明显下降(P<0.05),HGF m RNA表达明显增加(P<0.05);蒙诺组细胞变化与积雪草大剂量组相似。结论:积雪草抗TIF作用可能通过抑制MCP-1、MMP-2、TIMP-2的高表达,上调HGF的表达,调节MMP-2/TIMP-2的平衡而实现,且与其剂量呈正相关。
文摘目的观察16、32、64周龄自发性高血压大鼠(SHR)海马区炎症相关因子COX-2(环氧合酶-2)、MCP-1(单核细胞趋化蛋白-1)及NF-κB(核转录因子-κB)的表达水平和海马CA1区神经元改变,探讨增龄性高血压脑损伤过程中的炎症反应机制。方法雄性SHR及正常对照威斯塔京都大鼠(WKY)各15只,各随机分为3组,每组5只:16周组、32周组和64周组。采用尾动脉测压法测定各组大鼠收缩压(SBP),尼氏染色法观察海马CA1区神经元损伤情况,Real time PCR法检测海马COX-2、MCP-1mRNA表达水平,Western blot法检测NF-κB蛋白表达水平。结果随着年龄升高,SHR大鼠SBP明显升高,海马区NF-κB表达及MCP-1、COX-2mRNA表达均升高,差异有统计学意义(P<0.01,P<0.05),海马CA1区神经元减少,差异有统计学意义(P<0.01)。结论随增龄和血压升高,SHR海马CA1区神经元丢失明显;NF-κB活化及MCP-1、COX-2等炎症因子表达升高可能参与了高血压认知下降的病理过程。
