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Ghrelin regulates insulin resistance by targeting insulin-like growth factor-1 receptor via miR-455-5p in hepatic cells
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作者 GUO Zhan-hong JU Yue-jun +4 位作者 SHEN Ting ZHANG Lin-qi SHENG Zhong-qi WU Run-ze KONG Ying-hong 《Journal of Hainan Medical University》 CAS 2024年第1期22-28,共7页
Objective: To explore the mechanism by which ghrelin regulates insulin sensitivity through modulation of miR-455-5p in hepatic cells. Methods: HepG2 cells were treated with or without DAG (1 μM). Glucose consumption,... Objective: To explore the mechanism by which ghrelin regulates insulin sensitivity through modulation of miR-455-5p in hepatic cells. Methods: HepG2 cells were treated with or without DAG (1 μM). Glucose consumption, intracellular glycogen content, phosphorylation of PI3K and Akt stimulated by insulin, expression of miR-455-5p, as well as IGF-1R protein level were analyzed. In addition, bioinformatic analysis, dual luciferase reporter assay, miR- 455-5p mimic or inhibitor treatment was conducted to investigate the molecular mechanisms. Results: High glucose treatment upregulated miR-455-5p expression but reduced glucose consumption and glycogen content. DAG reversed the effect of high glucose on glucose metabolism, increased protein level of IGF-1R and phosphorylation of PI3K/Akt stimulated by insulin, as well as downregulated miR-455-5p expression. Bioinformatic analysis indicated IGF-1R was the target of miR-455-5p. Dual luciferase reporter assay, as well as transfection with miR-455-5p mimic/inhibitor confirmed that DAG activated IGF-1R/PI3K/Akt signaling via inhibiting miR-455-5p. Conclusion: DAG improves insulin resistance via miR-455-5p- mediated activation of IGF-1R/PI3K/Akt system, suggesting that suppression of miR-455-5p or activation of DAG may be potential targets for T2DM therapy. 展开更多
关键词 GHRELIN miR-455-5p IGF-1R Insulin resistance HepG2 cells
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Gamma-glutamyl transferase 5 overexpression in cerebrovascular endothelial cells improves brain pathology,cognition,and behavior in APP/PS1 mice
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作者 Yanli Zhang Tian Li +8 位作者 Jie Miao Zhina Zhang Mingxuan Yang Zhuoran Wang Bo Yang Jiawei Zhang Haiting Li Qiang Su Junhong Guo 《Neural Regeneration Research》 SCIE CAS 2025年第2期533-547,共15页
In patients with Alzheimer’s disease,gamma-glutamyl transferase 5(GGT5)expression has been observed to be downregulated in cerebrovascular endothelial cells.However,the functional role of GGT5 in the development of A... In patients with Alzheimer’s disease,gamma-glutamyl transferase 5(GGT5)expression has been observed to be downregulated in cerebrovascular endothelial cells.However,the functional role of GGT5 in the development of Alzheimer’s disease remains unclear.This study aimed to explore the effect of GGT5 on cognitive function and brain pathology in an APP/PS1 mouse model of Alzheimer’s disease,as well as the underlying mechanism.We observed a significant reduction in GGT5 expression in two in vitro models of Alzheimer’s disease(Aβ_(1-42)-treated hCMEC/D3 and bEnd.3 cells),as well as in the APP/PS1 mouse model.Additionally,injection of APP/PS1 mice with an adeno-associated virus encoding GGT5 enhanced hippocampal synaptic plasticity and mitigated cognitive deficits.Interestingly,increasing GGT5 expression in cerebrovascular endothelial cells reduced levels of both soluble and insoluble amyloid-βin the brains of APP/PS1 mice.This effect may be attributable to inhibition of the expression ofβ-site APP cleaving enzyme 1,which is mediated by nuclear factor-kappa B.Our findings demonstrate that GGT5 expression in cerebrovascular endothelial cells is inversely associated with Alzheimer’s disease pathogenesis,and that GGT5 upregulation mitigates cognitive deficits in APP/PS1 mice.These findings suggest that GGT5 expression in cerebrovascular endothelial cells is a potential therapeutic target and biomarker for Alzheimer’s disease. 展开更多
关键词 Alzheimer’s disease amyloid-β APP/PS1 mice cerebrovascular endothelial cells cognitive deficits gamma-glutamyl transferase 5 neurovascular unit nuclear factor‐kappa B synaptic plasticity β-site APP cleaving enzyme 1
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Bone marrow-derived mesenchymal stem cell-derived exosomeloaded miR-129-5p targets high-mobility group box 1 attenuates neurological-impairment after diabetic cerebral hemorrhage 被引量:1
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作者 Yue-Ying Wang Ke Li +5 位作者 Jia-Jun Wang Wei Hua Qi Liu Yu-Lan Sun Ji-Ping Qi Yue-Jia Song 《World Journal of Diabetes》 SCIE 2024年第9期1979-2001,共23页
BACKGROUND Diabetic intracerebral hemorrhage(ICH)is a serious complication of diabetes.The role and mechanism of bone marrow mesenchymal stem cell(BMSC)-derived exosomes(BMSC-exo)in neuroinflammation post-ICH in patie... BACKGROUND Diabetic intracerebral hemorrhage(ICH)is a serious complication of diabetes.The role and mechanism of bone marrow mesenchymal stem cell(BMSC)-derived exosomes(BMSC-exo)in neuroinflammation post-ICH in patients with diabetes are unknown.In this study,we investigated the regulation of BMSC-exo on hyperglycemia-induced neuroinflammation.AIM To study the mechanism of BMSC-exo on nerve function damage after diabetes complicated with cerebral hemorrhage.METHODS BMSC-exo were isolated from mouse BMSC media.This was followed by transfection with microRNA-129-5p(miR-129-5p).BMSC-exo or miR-129-5poverexpressing BMSC-exo were intravitreally injected into a diabetes mouse model with ICH for in vivo analyses and were cocultured with high glucoseaffected BV2 cells for in vitro analyses.The dual luciferase test and RNA immunoprecipitation test verified the targeted binding relationship between miR-129-5p and high-mobility group box 1(HMGB1).Quantitative polymerase chain reaction,western blotting,and enzyme-linked immunosorbent assay were conducted to assess the levels of some inflammation factors,such as HMGB1,interleukin 6,interleukin 1β,toll-like receptor 4,and tumor necrosis factorα.Brain water content,neural function deficit score,and Evans blue were used to measure the neural function of mice.RESULTS Our findings indicated that BMSC-exo can promote neuroinflammation and functional recovery.MicroRNA chip analysis of BMSC-exo identified miR-129-5p as the specific microRNA with a protective role in neuroinflammation.Overexpression of miR-129-5p in BMSC-exo reduced the inflammatory response and neurological impairment in comorbid diabetes and ICH cases.Furthermore,we found that miR-129-5p had a targeted binding relationship with HMGB1 mRNA.CONCLUSION We demonstrated that BMSC-exo can reduce the inflammatory response after ICH with diabetes,thereby improving the neurological function of the brain. 展开更多
关键词 Bone marrow mesenchymal stem cells Exosome Diabetic cerebral hemorrhage Neuroinflammation MicroRNA-129-5p High mobility group box 1
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Quercetin ameliorates oxidative stress-induced senescence in rat nucleus pulposus-derived mesenchymal stem cells via the miR-34a-5p/SIRT1 axis 被引量:1
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作者 Wen-Jie Zhao Xin Liu +9 位作者 Man Hu Yu Zhang Peng-Zhi Shi Jun-Wu Wang Xu-Hua Lu Xiao-Fei Cheng Yu-Ping Tao Xin-Min Feng Yong-Xiang Wang Liang Zhang 《World Journal of Stem Cells》 SCIE 2023年第8期842-865,共24页
BACKGROUND Intervertebral disc degeneration(IDD)is a main contributor to low back pain.Oxidative stress,which is highly associated with the progression of IDD,increases senescence of nucleus pulposus-derived mesenchym... BACKGROUND Intervertebral disc degeneration(IDD)is a main contributor to low back pain.Oxidative stress,which is highly associated with the progression of IDD,increases senescence of nucleus pulposus-derived mesenchymal stem cells(NPMSCs)and weakens the differentiation ability of NPMSCs in degenerated intervertebral discs(IVDs).Quercetin(Que)has been demonstrated to reduce oxidative stress in diverse degenerative diseases.AIM To investigate the role of Que in oxidative stress-induced NPMSC damage and to elucidate the underlying mechanism.METHODS In vitro,NPMSCs were isolated from rat tails.Senescence-associatedβ-galactosidase(SA-β-Gal)staining,cell cycle,reactive oxygen species(ROS),realtime quantitative polymerase chain reaction(RT-qPCR),immunofluorescence,and western blot analyses were used to evaluated the protective effects of Que.Meanwhile the relationship between miR-34a-5p and Sirtuins 1(SIRT1)was evaluated by dual-luciferase reporter assay.To explore whether Que modulates tert-butyl hydroperoxide(TBHP)-induced senescence of NPMSCs via the miR-34a-5p/SIRT1 pathway,we used adenovirus vectors to overexpress and downregulate the expression of miR-34a-5p and used SIRT1 siRNA to knockdown SIRT1 expression.In vivo,a puncture-induced rat IDD model was constructed,and X rays and histological analysis were used to assess whether Que could alleviate IDD in vivo.RESULTS We found that TBHP can cause NPMSCs senescence changes,such as reduced cell proliferation ability,increased SA-β-Gal activity,cell cycle arrest,the accumulation of ROS,and increased expression of senescence-related proteins.While abovementioned senescence indicators were significantly alleviated by Que treatment.Que decreased the expression levels of senescence-related proteins(p16,p21,and p53)and senescence-associated secreted phenotype(SASP),including IL-1β,IL-6,and MMP-13,and it increased the expression of SIRT1.In addition,the protective effects of Que on cell senescence were partially reversed by miR-34a-5p overexpression and SIRT1 knockdown.In vivo,X-ray,and histological analyses indicated that Que alleviated IDD in a punctureinduced rat model.CONCLUSION In summary,the present study provides evidence that Que reduces oxidative stress-induced senescence of NPMSCs via the miR-34a/SIRT1 signaling pathway,suggesting that Que may be a potential agent for the treatment of IDD. 展开更多
关键词 QUERCETIN Nucleus pulposus-derived mesenchymal stem cells Oxidative stress SENESCENCE Intervertebral disc degeneration miR-34a-5p/SIRT1 pathway
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Exosome-derived miR-146a-5p from decidual macrophages in preeclampsia inhibits the viability and invasive ability of trophoblast cells by targeting HIF1α
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作者 CHEN Fang-rong MAO Dong-rui CHEN Xiao-ju 《Journal of Hainan Medical University》 2023年第4期27-32,共6页
Objective:To investigate the effect of exosomes secreted by decidual macrophages on trophoblast cells and their molecular mechanism.Methods:The decidual tissues of patients with preeclampsia(PE)and normal-term pregnan... Objective:To investigate the effect of exosomes secreted by decidual macrophages on trophoblast cells and their molecular mechanism.Methods:The decidual tissues of patients with preeclampsia(PE)and normal-term pregnant women were collected.Macrophages were obtained by the density gradient method and then flow cell sorting,then the exosomes were extracted.The structure of the exosomes was observed by transmission electron microscope.The expression of CD63,a marker protein of the exocrine body,was detected by western blot,and the exosomes were identified.CCK-8 was used to detect the effect of exosomes on trophoblast cell viability.Transwell migration experiment was used to detect the influence on migration ability.The expression of miR-146a-5p in exosomes was detected by qPCR.The effect of exosomes on the expression of HIF1αprotein in trophoblasts was detected by western blot and detection of the binding site between miR-146a-5p and HIF1αby double luciferase reporter gene was conducted.Results:The exosomes of macrophages present a"cake"structure with a middle depression about 30-130 nm in diameter,and CD63 is highly expressed,which conforms to the characteristics of exosomes.Compared with the normal group,the exosomes of decidual macrophages in the PE group inhibited the activity and migration of trophoblast cells(P<0.001).The expression of miR-146a-5p in the exosomes of decidual macrophages in the PE decreased significantly,and after exosomes of PE decidual macrophages treating trophoblast cells,the protein expression of HIF1αin trophoblast cells was significantly increased.There are targeted binding sites between miR-146a-5p and HIF1α.Conclusion:PE decidual macrophage exosomes can inhibit the viability and migration of trophoblast cells,which may be related to the decreased expression of miR-146a-5p in exosomes,thus promoting HIF1αprotein expression of trophoblast cells. 展开更多
关键词 PREECLAMPSIA Decidual macrophages Exosomes miR-146a-5p/HIF1α Trophoblast cells
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冠心病患者血清VCAM-1、miR-145、Gal-3、SFRP5水平变化
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作者 陈鑫 张阿莲 《北华大学学报(自然科学版)》 CAS 2024年第5期620-625,共6页
目的探讨冠心病患者血清血管细胞黏附分子-1(VCAM-1)、miR-145、半乳糖凝集素-3(Gal-3)、分泌型卷曲蛋白5(SFRP5)水平变化及意义。方法选取冠心病患者80例为冠心病组,另收集健康志愿者40名为健康对照组。采集清晨空腹肘静脉血,酶联免疫... 目的探讨冠心病患者血清血管细胞黏附分子-1(VCAM-1)、miR-145、半乳糖凝集素-3(Gal-3)、分泌型卷曲蛋白5(SFRP5)水平变化及意义。方法选取冠心病患者80例为冠心病组,另收集健康志愿者40名为健康对照组。采集清晨空腹肘静脉血,酶联免疫吸附法测定血清VCAM-1、Gal-3、SFRP5浓度;RT-PCR检测血清miR-145表达水平。根据冠脉造影检查诊断的病变支数分为单支病变、双支病变、多支病变。收集两组受试者人口学特征及冠心病患者实验室指标;进行1 a随访,记录不良预后发生情况(病情加重再入院、死亡)。结果冠心病组患者血清VCAM-1、Gal-3水平明显高于健康对照组,miR-145、SFRP5水平明显低于健康对照组(均P<0.01)。急性心肌梗死组患者血清VCAM-1、Gal-3水平明显高于不稳定型心绞痛组、稳定型心绞痛组患者,血清miR-145、SFRP5水平明显低于不稳定型心绞痛组、稳定型心绞痛组患者(均P<0.05)。多支病变患者血清VCAM-1、Gal-3水平明显高于双支病变和单支病变患者,血清miR-145、SFRP5水平明显低于双支病变和单支病变患者(均P<0.05)。预后不良组患者血清VCAM-1、Gal-3水平明显高于预后良好组患者,miR-145、SFRP5水平明显低于预后良好组患者(均P<0.01)。VCAM-1、miR-145、Gal-3、SFRP5水平是冠心病患者预后的独立影响因素;ROC曲线分析显示,血清VCAM-1、miR-145、Gal-3、SFRP5水平联合检测对冠心病患者预后具有较高的预测价值(AUC=0.928)。结论冠心病患者血清VCAM-1、Gal-3水平高表达,miR-145、SFRP5水平低表达,且与冠心病分类、冠脉病变支数密切相关,联合检测对预后具有较高的预测价值。 展开更多
关键词 冠心病 血管细胞黏附分子-1 MIR-145 半乳糖凝集素-3 分泌型卷曲蛋白5 预后
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DCLK1和ITGA5在非小细胞肺癌患者中的表达及其与临床病理特征及预后的关系研究
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作者 刘昊 靳二梅 +1 位作者 丁红娟 常彦祥 《临床肺科杂志》 2024年第4期572-576,共5页
目的 检测非小细胞肺癌(non-small cell lung cancer,NSCLC)患者血清双皮质素样激酶1(doublecortin-like kinase 1,DCLK1)和整合素α5(integrin alpha5,ITGA5)水平并讨论二者与临床病理特征及预后的关系。方法 选取2017年6月1日至2020年... 目的 检测非小细胞肺癌(non-small cell lung cancer,NSCLC)患者血清双皮质素样激酶1(doublecortin-like kinase 1,DCLK1)和整合素α5(integrin alpha5,ITGA5)水平并讨论二者与临床病理特征及预后的关系。方法 选取2017年6月1日至2020年7月1日在我院收治的116例NSCLC患者(NSCLC组)作为研究对象,收集同期100例健康受试者作为对照组,采用酶联免疫吸附法检测NSCLC组和对照组受试者血清中DCLK1和ITGA5的水平;根据预后情况将患者分为生存组和死亡组,ROC曲线分析血清DCLK1、ITGA5的水平对NSCLC患者3年发生死亡的预测价值,多因素Cox回归分析影响NSCLC患者发生死亡的因素。结果 NSCLC组患者血清DCLK1、ITGA5的水平高于对照组(P<0.05);不同吸烟史、TNM分期、分化程度、肿瘤直径以及淋巴结转移的NSCLC患者血清DCLK1、ITGA5的水平比较,差异有统计学意义(P<0.05);死亡组患者血清DCLK1、ITGA5的水平均高于生存组(P<0.05);血清DCLK1、ITGA5单独及联合预测患者发生死亡的AUC分别为0.895(95%CI=0.824~0.944)、0.828(95%CI=0.747~0.892)、0.926(95%CI=0.862~0.966);DCLK1、ITGA5及淋巴结转移是影响NSCLC患者发生死亡的独立危险因素(P<0.05)。结论 NSCLC患者血清DCLK1、ITGA5的水平异常升高,二者的表达水平与NSCLC患者临床病理特征和不良预后有关。 展开更多
关键词 非小细胞肺癌 临床病理特征 预后 双皮质素样激酶1 整合素Α5
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血清细胞程序性死亡蛋白5、信号转导与转录激活因子1水平与宫颈鳞状细胞癌患者临床特征及预后的关系
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作者 张亚娟 牛阳 白晶 《癌症进展》 2024年第14期1570-1572,1600,共4页
目的探讨血清细胞程序性死亡蛋白5(PDCD5)、信号转导与转录激活因子1(STAT1)水平与宫颈鳞状细胞癌(CSCC)患者临床特征及预后的关系。方法选取68例CSCC患者和60例健康体检者,分别纳入CSCC组和健康组。比较两组受试者及不同临床特征CSCC... 目的探讨血清细胞程序性死亡蛋白5(PDCD5)、信号转导与转录激活因子1(STAT1)水平与宫颈鳞状细胞癌(CSCC)患者临床特征及预后的关系。方法选取68例CSCC患者和60例健康体检者,分别纳入CSCC组和健康组。比较两组受试者及不同临床特征CSCC患者血清PDCD5、STAT1水平。CSCC患者预后的影响因素采用多因素Cox回归模型分析。结果CSCC组患者血清PDCD5、STAT1水平均明显低于健康组,差异均有统计学意义(P﹤0.01)。有淋巴结转移、分化程度为低分化、临床分期为Ⅲ+Ⅳ期CSCC患者血清PDCD5、STAT1水平分别低于无淋巴结转移、分化程度为中高分化、临床分期为Ⅰ+Ⅱ期患者,差异均有统计学意义(P﹤0.05)。随访12个月,68例CSCC患者中,生存62例,死亡6例。多因素Cox分析结果显示,血清PDCD5﹤0.75 ng/ml、STAT1﹤54.69μg/L、淋巴结转移均是CSCC患者预后不良的独立危险因素(P﹤0.05)。结论CSCC患者血清PDCD5、STAT1水平较低,血清PDCD5﹤0.75 ng/ml、STAT1﹤54.69μg/L、淋巴结转移均是CSCC患者预后不良的独立危险因素。 展开更多
关键词 宫颈鳞状细胞癌 细胞程序性死亡蛋白5 信号转导与转录激活因子1 临床特征 预后
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二烯丙基二硫增强DJ-1过表达人胃癌SGC7901细胞对5-FU的敏感性
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作者 寻艺 夏红 +3 位作者 李志敏 刘芳 苏琦 苏波 《中国药理学通报》 CAS CSCD 北大核心 2024年第1期99-105,共7页
目的 探讨二烯丙基二硫(diallyl disulfide, DADS)是否增强DJ-1(protein/nucleic acid deglycase,蛋白/核酸去糖化酶)过表达人胃癌SGC7901细胞对5-FU(5-fluorouracil, 5-氟尿嘧啶)的敏感性。方法 实验分为Control组、DADS组、VCR(Vincri... 目的 探讨二烯丙基二硫(diallyl disulfide, DADS)是否增强DJ-1(protein/nucleic acid deglycase,蛋白/核酸去糖化酶)过表达人胃癌SGC7901细胞对5-FU(5-fluorouracil, 5-氟尿嘧啶)的敏感性。方法 实验分为Control组、DADS组、VCR(Vincristine,长春新碱)组、VCR+DADS组、DJ-1组、DJ-1+DADS组;MTT检测DADS对5-FU抑制细胞增殖的影响;流式细胞术检测DADS对细胞凋亡的影响;qRT-PCR、Western blot、免疫荧光检测DADS对耐药相关基因表达的影响。结果 DADS增强5-FU对VCR耐药细胞和DJ-1过表达细胞增殖的抑制作用;DADS诱导VCR耐药细胞凋亡;DADS下调DJ-1表达、诱导DJ-1过表达细胞凋亡;过表达DJ-1上调P-糖蛋白(P-glycoprotein, P-gp)、Bcl-2、XIAP(X连锁凋亡抑制蛋白),下调caspase-3表达;DADS降低DJ-1过表达细胞和VCR耐药细胞P-gp、Bcl-2、XIAP,升高caspase-3表达。结论 DADS能增强DJ-1过表达细胞对5-FU的敏感性,与其拮抗DJ-1介导的P-gp、Bcl-2、XIAP上调、caspase-3下调有关。 展开更多
关键词 二烯丙基二硫 DJ-1 P-糖蛋白 胃癌细胞 耐药 5-氟尿嘧啶
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过表达溶质载体家族1成员5和敲低慢病毒载体构建及稳定转染RAW264.7细胞株
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作者 郭大鑫 范苏苏 +2 位作者 朱振东 侯建红 张旋 《中国组织工程研究》 CAS 北大核心 2025年第7期1414-1421,共8页
背景:溶质载体家族1成员5(solute carrier family 1 member 5,SLC1A5)在多种疾病中发挥了潜在作用,但确切作用机制尚不清楚。构建稳定的SLC1A5过表达和敲低细胞模型可为深入研究SLC1A5在疾病中的确切作用机制以及发现潜在治疗靶点提供... 背景:溶质载体家族1成员5(solute carrier family 1 member 5,SLC1A5)在多种疾病中发挥了潜在作用,但确切作用机制尚不清楚。构建稳定的SLC1A5过表达和敲低细胞模型可为深入研究SLC1A5在疾病中的确切作用机制以及发现潜在治疗靶点提供有力的实验工具。目的:构建小鼠SLC1A5过表达和敲低的慢病毒载体,以建立稳定转染的RAW264.7细胞株,为深入探讨SLC1A5在炎症中的作用提供实验基础。方法:根据SLC1A5基因序列设计合成引物并使用聚合酶链反应扩增该基因片段。将目的基因定向接入经Age I/Nhe I酶切的载体质粒GV492中构建重组慢病毒质粒,对阳性克隆进一步筛选后测序比对结果;pHelper1.0质粒载体、pHelper2.0质粒载体、目的质粒载体与293T细胞共同培养并转染,获得慢病毒原液进行包装和滴度测定;在此基础上,通过体外培养RAW264.7细胞,确定嘌呤霉素工作质量浓度;不同滴度的慢病毒分别与RAW264.7细胞共同培养,根据荧光强度确定转染效率;用嘌呤霉素挑选出稳定转染细胞,实时荧光定量聚合酶链反应和蛋白免疫印迹方法检测稳定转染细胞株的SLC1A5基因和蛋白表达水平。结果与结论:(1)测序序列与目的序列一致提示重组慢病毒载体构建成功;(2)过表达SLC1A5慢病毒的滴度为1×10~9 TU/mL,敲低SLC1A5慢病毒的滴度为3×10~9 TU/mL;(3)确定RAW264.7细胞嘌呤霉素工作质量浓度为3μg/mL;(4)过表达/敲低SLC1A5慢病毒转染RAW264.7细胞的最佳条件皆为HiTransG P转染增强液且感染复数值等于50;(5)过表达SLC1A5稳转细胞株中SLC1A5基因和蛋白的表达量明显上调,而敲低SLC1A5稳转细胞株中SLC1A5基因和蛋白的表达量显著下调。结果表明,成功构建了小鼠SLC1A5过表达和敲低的慢病毒载体并获得稳定转染的RAW264.7细胞株。 展开更多
关键词 慢病毒载体 溶质载体家族1成员5 SLC1A5 过表达 敲低 RAW264.7细胞 稳转细胞株
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Sublytic C5b-9上调KLF5促进Thy-1肾炎大鼠肾小球系膜细胞生成IL-23的作用
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作者 刘玉 应帅 +4 位作者 罗灿 李玉 荣灿 王迎伟 邱文 《南京医科大学学报(自然科学版)》 CAS 北大核心 2024年第9期1198-1206,共9页
目的:研究亚溶解型C5b-9(sublytic C5b-9)上调转录因子Krüppel样因子5(Krüppel-like factor 5,KLF5)促进Thy-1肾炎(Thy-1 nephritis,Thy-1N)大鼠肾小球系膜细胞(glomerular mesangial cell,GMC)产生炎症因子白细胞介素(interl... 目的:研究亚溶解型C5b-9(sublytic C5b-9)上调转录因子Krüppel样因子5(Krüppel-like factor 5,KLF5)促进Thy-1肾炎(Thy-1 nephritis,Thy-1N)大鼠肾小球系膜细胞(glomerular mesangial cell,GMC)产生炎症因子白细胞介素(interleukin,IL)-23的作用。方法:(1)建立大鼠Thy-1N模型和体外培养大鼠GMC,用Western blot(WB)检查Thy-1N大鼠肾组织和受sublytic C5b-9刺激的GMC中KLF5和IL-23的表达。(2)分别将KLF5过表达质粒(pIRES2-KLF5)或KLF5小干扰质粒(shKLF5)转染GMC,通过实时荧光定量PCR和WB检测KLF5和IL-23的mRNA和蛋白水平。(3)将IL-23全长启动子荧光素酶报告基因质粒(p GL3-IL-23-FL)转染GMC,再给予sublytic C5b-9刺激,或将p GL3-IL-23-FL与pIRES2-KLF5或shKLF5共转染GMC,用荧光素酶报告基因实验检测IL-23启动子活性的变化。(4)将慢病毒(lentivirus,LV)包装的LV-shKLF5和LV-shCTR行肾动脉灌注术导入大鼠肾组织,经小动物脏器可见光三维成像和冰冻切片观察GFP表达,证实LV-shCTR在肾组织中富集效率。之后再复制大鼠Thy-1N,用WB检查肾组织中KLF5和IL-23的蛋白表达。结果:(1)Thy-1N大鼠的肾组织和sublytic C5b-9刺激的GMC中,KLF5和IL-23的表达均显著升高,且KLF5的表达高峰稍早于IL-23。(2)在GMC中过表达或敲低KLF5能分别引起IL-23表达的升高或降低。(3)Sublytic C5b-9刺激或KLF5过表达均可增加GMC中IL-23启动子的活性,但敲低KLF5后可明显下调由sublytic C5b-9刺激GMC诱导的IL-23启动子活性。(4)敲低Thy-1N大鼠肾组织中KLF5的表达后,其肾组织中IL-23的表达水平明显降低。结论:大鼠Thy-1N发病早期,sublytic C5b-9刺激GMC后可通过上调KLF5促进IL-23基因的转录与表达。 展开更多
关键词 THY-1肾炎 亚溶解型C5b-9 肾小球系膜细胞 krüppel样因子5 白细胞介素-23
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复发性口腔溃疡患儿血清IRF5、sTREM-1变化及对复发的预测价值
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作者 黄岩 王明丽 +1 位作者 边玉婷 刘元元 《国际检验医学杂志》 CAS 2024年第7期824-827,836,共5页
目的探讨复发性口腔溃疡患儿血清干扰素调节因子5(IRF5)、可溶性髓样细胞触发受体1(sTREM-1)水平变化及其对复发的预测价值。方法选取石家庄市妇幼保健院于2021年7月至2022年12月收治的146例复发性口腔溃疡患儿为观察组,并根据3个月内... 目的探讨复发性口腔溃疡患儿血清干扰素调节因子5(IRF5)、可溶性髓样细胞触发受体1(sTREM-1)水平变化及其对复发的预测价值。方法选取石家庄市妇幼保健院于2021年7月至2022年12月收治的146例复发性口腔溃疡患儿为观察组,并根据3个月内是否复发分为复发组(n=45)和未复发组(n=101)。另选取同期138例健康志愿者作为对照组。采用实时荧光定量PCR(qPCR)检测血清IRF5 mRNA表达水平,酶联免疫吸附试验(ELISA)检测血清sTREM-1、白细胞介素(IL)-6和IL-10表达水平,Pearson分析法分析复发性口腔溃疡患儿血清IRF5和sTREM-1水平与IL-6和IL-10水平的相关性,受试者工作特征(ROC)曲线分析血清IRF5和sTREM-1水平对复发性口腔溃疡患儿复发的预测价值。结果与对照组比较,观察组血清IRF5水平明显降低(P<0.05),sTREM-1、IL-6和IL-10水平明显升高(P<0.05);Pearson分析结果显示,复发性口腔溃疡患儿血清IRF5与IL-6、IL-10水平呈负相关(r=-0.531、-0.462,P<0.05),血清sTREM-1水平与IL-6、IL-10水平呈正相关(r=0.435、0.480,P<0.05);与未复发组比较,复发组患儿血清IRF5水平明显降低(P<0.05),sTREM-1水平明显升高(P<0.05)。ROC曲线分析结果显示,血清IRF5水平单独预测复发性口腔溃疡患儿复发的曲线下面积(AUC)为0.823,最佳cut-off值为0.85,灵敏度和特异度分别为75.56%、84.16%;血清sTREM-1水平单独预测复发性口腔溃疡患儿复发的AUC为0.833,灵敏度和特异度分别为68.89%、88.12%,最佳cut-off值为84.08 pg/mL;二者联合预测复发性口腔溃疡患儿复发的灵敏度和特异度分别为88.89%、82.18%,AUC为0.915,显著高于IRF5单独预测的AUC(Z=2.455,P=0.014)和sTREM-1单独预测的AUC(Z=2.790,P=0.005)。结论复发性口腔溃疡患儿血清IRF5水平较低、sTREM-1水平较高,二者联合对复发性口腔溃疡患儿再复发具有较高的预测价值。 展开更多
关键词 复发性口腔溃疡 干扰素调节因子5 可溶性髓样细胞触发受体1
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CircROBO1 promotes retinal Y79 cell tumor invasion by targeting KLF5
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作者 Liu Yue-feng Zhang Zhi-wei +1 位作者 Li Xin Luo Wei-min 《Journal of Hainan Medical University》 CAS 2023年第17期21-27,共7页
Objective:To explore the role of circROBO1 in promoting the invasion of retinal Y79 cells by targeting KLF5 and its possible regulatory mechanism.Methods:RNase R enzyme digestion and qRT-PCR experiments were used to d... Objective:To explore the role of circROBO1 in promoting the invasion of retinal Y79 cells by targeting KLF5 and its possible regulatory mechanism.Methods:RNase R enzyme digestion and qRT-PCR experiments were used to detect the structural stability of circular circROBO1 in retinal Y79 cells;cytoplasmic and nuclear RNAs of retinal Y79 cells were extracted for localization analysis of circROBO1;The expression of circROBO1 in retinal Y79 cells were silenced by siRNA.The effect of circROBO1 on the migration and invasion ability of HT-29 cells was detected by scratch assay,Transwell cell invasion and migration assay.The target binding sites of circROBO1 and its downstream miRNA and that of miRNA and its downstream target gene KLF5 were predicted by CircInteractome and TargetScan online software respectively,and the target regulation relationship between them was verified by double luciferase reporter gene experiment.Western blot was used to detect the effect of siRNA silencing the expression of circROBO1 in Y79 cells on the expression of KLF5.Results:Compared with the control group without RNase R enzyme treatment,relative circROBO1 levels did not change significantly after treatment,while relative linear ROBO1 levels decreased significantly after treatment(t=16.18,P<0.05);the content of circROBO1 in the cytoplasm was significantly higher than that in the nucleus(P<0.05);compared with si-control group,the migration rate and the invasion and migration abilities of Transwell cells were all lower in the si-circROBO1 group(t=22.54,P<0.05);circROBO1 can adsorb miR-885-5p,and there is a target binding site between miR-885-5p and KLF5(t=11.39,P<0.05);compared with the si-control group,the KLF5 protein expression in the si-circROBO1 group was significantly decreased(t=17.26,P<0.05).Conclusions:circROBO1 promotes retinalY79 cell tumor invasion by targeting KLF5. 展开更多
关键词 Retinal cell Y79 CircROBO1 MiR-885-5p KLF5 INVASION
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MiR-183-5p promotes the progression of non-small cell lung cancer through targeted regulation of FOXO1
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作者 Yan Deng Zhengguang He +3 位作者 Xiaobin Luo Rong Qiu Yong Zhao Wen Luo 《Oncology and Translational Medicine》 CAS 2023年第3期121-132,共12页
Objective To investigate miR-183-5p targeting to forkhead box protein O1(FOXO1)and its corresponding effect on the proliferation,migration,invasion,and epithelial-mesenchymal transition(EMT)of non-small cell lung canc... Objective To investigate miR-183-5p targeting to forkhead box protein O1(FOXO1)and its corresponding effect on the proliferation,migration,invasion,and epithelial-mesenchymal transition(EMT)of non-small cell lung cancer(NSCLC)cells.Methods NSCLC tissues and adjacent normal tissues from 60 patients with NSCLC adenocarcinoma were obtained via pathological biopsy or intraoperative resection.Several cell lines were cultured in vitro,including the human normal lung epithelial cell line BEAS-2B and human NSCLC cell lines A549,SPCA-1,PC-9,and 95-D.miR-183-5p and FOXO1 mRNA expression in tissues and cells were detected by qRT-PCR;the corresponding correlations in NSCLC tissues were analyzed using the Pearson test,and the relationship between miR-183-5p expression and clinicopathological parameters was analyzed.The miR-183-5p-mediated regulation of FOXO1 was verified by bioinformatics prediction alongside double luciferase,RNA-binding protein immunoprecipitation(RIP)assay,and pull-down experiments.A549 cells were divided into control,anti-miR-NC,anti-miR-183-5p,miR-NC,miR-183-5p,miR-183-5p+pcDNA3.1,and miR-183-5p+pcDNA3.1-FOXO1 groups.Cell proliferation,invasion,migration,apoptosis,and cell cycle distribution were detected using an MTT assay,clone formation assay,Transwell assay,scratch test,and flow cytometry,respectively.The expression of EMT-related proteins in the cells was analyzed by western blotting.The effect of miR-185-3p silencing on the development of transplanted tumors was detected by analyzing tumor formation in nude mice.Results miR-183-5p expression was significantly higher in NSCLC tissues and cells than in adjacent normal tissues,whereas FOXO1 mRNA expression was significantly down-regulated.There was a significant negative correlation between miR-183-5p and FOXO1 mRNA in NSCLC tissues(P<0.05).Additionally,the expression of miR-183-5p was significantly correlated with tumor size,tumor differentiation,and tumor-node-metastasis stage in patients with NSCLC(P<0.05).miR-183-5p targeted and inhibited FOXO1 expression.Compared to the anti-miR-NC group,the cell proliferation,scratch healing rate,N-cadherin and vimentin protein expression,and the proportion of S phase cells were significantly lower in the anti-miR-183-5p group,whereas the protein expression of E-cadherin andα-catenin and the proportion of G0/G1 phase cells were significantly higher;additionally,the frequency of colony formation and invasion were significantly lower in the anti-miR-183-5p group(P<0.05).Compared to the miR-NC group,the cell proliferation,scratch healing rate,N-cadherin and vimentin protein expression,and the proportion of S phase cells in the miR-183-5p group were significantly higher,whereas the E-cadherin andα-catenin protein expression and the proportion of G0/G1 phase cells were significantly lower;furthermore,the frequency of colony formation and invasion were significantly higher in the miR-183-5p group(P<0.05).Compared with the miR-183-5p+pcDNA3.1 group,the OD value,scratch healing rate,N-cadherin and vimentin protein expression,and the proportion of S phase cells were significantly lower in the miR-183-5p+pcDNA3.1-FOXO1 group,whereas E-cadherin andα-catenin protein expression and the proportion of G0/G1 phase cells were significantly higher;additionally,the frequency of colony formation and invasion was significantly lower in the miR-183-5p+pcDNA3.1-FOXO1 group(P<0.05).Overall,silencing miR-185-3p inhibited the growth of transplanted tumors and promoted FOXO1 expression.Conclusion Overexpression of miR-183-5p can inhibit apoptosis and promote the proliferation,migration,invasion,and EMT,of NSCLC cells by down-regulating FOXO1 expression. 展开更多
关键词 non-small cell lung cancer miR-183-5p forkhead box protein O1 malignant biological behavior targeted regulation
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Expression of interleukin 1β converting enzyme in 5-FU induced apoptosis in esophageal carcinoma cells 被引量:13
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作者 DENG Li Ying 1, ZHANG Yun Han 2, XU Ping 2, YANG Su Min 1 and YUAN Xue Bin 1 《World Journal of Gastroenterology》 SCIE CAS CSCD 1999年第1期55-57,共3页
AIM To study the role of interleukin 1β converting enzyme (ICE) in antitumor drug induced apoptosis in tumor cells. METHODS Morphological changes in human esophageal carcinoma Eca 109 cells after treated with 5 ... AIM To study the role of interleukin 1β converting enzyme (ICE) in antitumor drug induced apoptosis in tumor cells. METHODS Morphological changes in human esophageal carcinoma Eca 109 cells after treated with 5 fluorouracil (5 FU) were observed under light and electron microscope. Expression of ICE in the tumor cells exposed to 5 FU was examined by the immunocytochemical method. RESULTS The cells treated with 5 FU displayed disappearance of nucleoli, chromatin gathering under nuclear envelope, karyorrhexis, budding and the formation of apoptotic bodies. The expression of ICE was negative in control cells, and 5 FU could induce the ICE expression in Eca 109 cells undergoing apoptosis. The number and the staining intensity of positive cells increased with the extension of action time. CONCLUSION 5 FU may induce apoptosis in human esophageal carcinoma Eca 109 cells; ICE gene may be involved in the regulation of 5 FU induced apoptosis; and ICE protein may mediate apoptosis induced by 5 FU. 展开更多
关键词 ESOPHAGEAL cancinoma cell line APOPTOSIS 5 fluorouracil INTERLEUKIN 1β CONVERTING ENZYME
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CXCL5通过诱导血管钙化参与颈动脉斑块的形成 被引量:1
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作者 亓明 王磊 张振 《中国组织工程研究》 CAS 北大核心 2024年第2期186-192,共7页
背景:CXC基序趋化因子5(CXC-motif chemokine 5,CXCL5)为上皮细胞衍生的中性粒细胞激活肽,研究发现其可能参与动脉病变。然而,CXCL5在血管钙化中的作用未见报道。目的:探讨CXCL5在颈动脉粥样硬化的血管钙化中的作用。方法:①细胞实验:... 背景:CXC基序趋化因子5(CXC-motif chemokine 5,CXCL5)为上皮细胞衍生的中性粒细胞激活肽,研究发现其可能参与动脉病变。然而,CXCL5在血管钙化中的作用未见报道。目的:探讨CXCL5在颈动脉粥样硬化的血管钙化中的作用。方法:①细胞实验:将小鼠血管平滑肌细胞分成以下各组:成骨培养基组,Vector组(空白质粒转染到细胞中),CXCL5组(CXCL5质粒转染到细胞中),si-NC组(CXCL5阴性对照siRNA转染到细胞中),si-CXCL5组(CXCL5 siRNA转染到细胞中),Vector+LY2157299组和CXCL5+LY2157299组(细胞转染24 h后,将转化生长因子β受体1激酶抑制剂LY2157299加入细胞中)。进行茜素红染色、碱性磷酸酶染色和钙含量测定以评估血管平滑肌细胞成骨分化水平。②动物实验:48只ApoE-/-小鼠随机分成4组:Con+si-NC组、Con+si-CXCL5组、CAS+si-NC组和CAS+si-CXCL5组,前2组不造模,尾静脉注射si-NC或si-CXCL5慢病毒;后2组制备颈动脉粥样硬化模型,尾静脉注射si-NC或si-CXCL5慢病毒。采用Von Kossa染色和免疫组织化学染色评估小鼠颈动脉血管钙化以及CXCL5、转化生长因子β受体1表达情况。结果与结论:①CXCL5组细胞Runt相关转录因子2蛋白水平上调、α-平滑肌肌动蛋白水平下调,si-CXCL5组中的发现与其相反;CXCL5过表达上调了转化生长因子β受体1水平,而CXCL5敲低抑制了转化生长因子β受体1水平。②与Vector组相比,CXCL5组细胞茜素红染色的强度、碱性磷酸酶活性和钙含量显著增加(P<0.05);与si-NC组相比,si-CXCL5组上述2项指标显著降低(P<0.05);当用LY2157299抑制转化生长因子β受体1表达时,CXCL5对平滑肌细胞的成骨转化作用减弱。③与Con+si-NC组相比,CAS+si-NC组大鼠颈动脉中CXCL5蛋白表达和血管钙化面积显著增加(P<0.05);与CAS+si-NC组相比,CAS+si-CXCL5组颈动脉中上述2项指标显著降低(P<0.05)。④与Con+si-NC组相比,CAS+si-NC组大鼠颈动脉中Runt相关转录因子2蛋白表达显著增加(P<0.05)和α-平滑肌肌动蛋白表达显著降低(P<0.05);与CAS+si-NC组相比,CAS+si-CXCL5组颈动脉中上述2项指标呈相反变化(P<0.05)。⑤结果说明,CXCL5通过激活转化生长因子β受体1通路诱导血管平滑肌细胞成骨样转化,抑制CXCL5表达对于改善颈动脉粥样硬化小鼠颈动脉血管钙化是有效的。 展开更多
关键词 CXC基序趋化因子5 颈动脉粥样硬化 血管钙化 血管平滑肌细胞 转化生长因子β受体1
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血清CXC趋化因子受体5和血小板内皮细胞黏附分子-1对胃癌的诊断和预后评估价值 被引量:2
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作者 杨浩 王军 +3 位作者 严雪琴 张杰 顾永兴 张晓雨 《国际检验医学杂志》 CAS 2023年第5期576-581,587,共7页
目的探讨血清CXC趋化因子受体5(CXCR5)和血小板内皮细胞黏附分子-1(PECAM-1)对胃癌的诊断和预后评估价值。方法选取2014年1月至2015年10月淮安市洪泽区人民医院收治的经病理确诊的102例胃癌患者为研究组,另选取同期性别和年龄相匹配的8... 目的探讨血清CXC趋化因子受体5(CXCR5)和血小板内皮细胞黏附分子-1(PECAM-1)对胃癌的诊断和预后评估价值。方法选取2014年1月至2015年10月淮安市洪泽区人民医院收治的经病理确诊的102例胃癌患者为研究组,另选取同期性别和年龄相匹配的80例体检健康者为对照组。采用酶联免疫吸附试验法检测血清CXCR5和PECAM-1水平,采用受试者工作特征曲线(ROC曲线)分析CXCR5和PECAM-1对胃癌的诊断效能,以及与胃癌临床病理特征的关系。定期随访胃癌患者5年,比较存活组和死亡组血清CXCR5和PECAM-1水平,采用ROC曲线分析CXCR5和PECAM-1对胃癌死亡的预测效能,采用多因素Cox回归分析影响死亡的危险因素,比较CXCR5和PECAM-1高表达与低表达患者5年总生存率的差异。结果研究组血清CXCR5和PECAM-1水平明显高于对照组,差异有统计学意义(t=8.562、21.235,P<0.05)。ROC曲线结果显示,CXCR5、PECAM-1和两者联合诊断胃癌的曲线下面积(AUC)分别为0.829、0.874和0.912(P<0.05)。TNM分期为Ⅲ~Ⅳ期患者CXCR5和PECAM-1水平明显高于Ⅰ~Ⅱ期,低分化患者CXCR5和PECAM-1水平高于中高分化,淋巴结转移患者CXCR5和PECAM-1水平高于无淋巴结转移,肿瘤最大径>5 cm患者CXCR5和PECAM-1水平高于肿瘤最大径≤5 cm,差异均有统计学意义(P<0.05)。随访胃癌患者5年后,生存率为53.9%(55/102),死亡组血清CXCR5和PECAM-1水平明显高于存活组,差异有统计学意义(t=10.235、24.235,P<0.05)。ROC曲线结果显示,CXCR5、PECAM-1和两者联合诊断预测胃癌死亡的AUC分别为0.754、0.801和0.866(P<0.05)。Cox回归分析显示,TNM分期、淋巴结转移、肿瘤最大径、CXCR5和PECAM-1是影响胃癌预后的危险因素(P<0.05)。生存分析显示,CXCR5高表达患者5年总生存率比CXCR5低表达患者明显降低(χ^(2)=6.416,P=0.011);PECAM-1高表达患者5年总生存率比PECAM-1低表达患者明显降低(χ^(2)=16.052,P<0.001)。结论血清CXCR5和PECAM-1高表达可能参与胃癌的发生和临床预后,有望成为胃癌诊断和预后评估的重要指标,CXCR5和PECAM-1高表达与胃癌多个病理特征(TNM分期、分化程度和肿瘤最大径及淋巴结转移)密切相关。 展开更多
关键词 CXC趋化因子受体5 血小板内皮细胞黏附分子-1 胃癌 预后 病理特征
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蛋白质精氨酸甲基转移酶5和PD-L1在非小细胞肺癌组织中的表达及其对预后的评估价值
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作者 王艳 徐凤霞 +4 位作者 段玮 曾海珠 刘倩倩 王玉芳 刘兴晖 《标记免疫分析与临床》 CAS 2023年第4期578-582,694,共6页
目的 蛋白质精氨酸甲基转移酶5(PRMT5)和程序性细胞死亡配体1(PD-L1)在非小细胞肺癌(NSCLC)组织中的表达及其对预后的评估价值。方法 选取2015年10月至2019年10月我院收治的106例NSCLC患者为研究对象,均经过病理诊断确诊为NSCLC,在手术... 目的 蛋白质精氨酸甲基转移酶5(PRMT5)和程序性细胞死亡配体1(PD-L1)在非小细胞肺癌(NSCLC)组织中的表达及其对预后的评估价值。方法 选取2015年10月至2019年10月我院收治的106例NSCLC患者为研究对象,均经过病理诊断确诊为NSCLC,在手术中切除其癌组织和癌旁组织(距离癌组织大于5cm)即为NSCLC组和癌旁组。采用免疫组织化学染色法检测PRMT5和PD-L1的表达;利用Kaplan-Meier法分析PRMT5和PD-L1与NSCLC患者预后的关系;Cox回归分析影响NSCLC患者预后的危险因素。结果 与癌旁组相比,NSCLC组PRMT5和PD-L1阳性表达率显著升高(P<0.05)。PRMT5和PD-L1的表达与淋巴结转移、TNM分期、分化程度有关(P<0.05)。对NSCLC患者进行3年时间的随访,PRMT5和PD-L1阳性表达组患者生存率均低于阴性表达组(P<0.05)。多因素Cox回归分析结果显示,PRMT5和PD-L1表达水平是影响NSCLC患者预后的危险因素(P<0.05)。结论 NSCLC组织中PRMT5和PD-L1阳性表达率显著升高,与临床病理特征存在密切关系,对NSCLC患者的预后有一定的评估价值。 展开更多
关键词 非小细胞肺癌 蛋白质精氨酸甲基转移酶5 程序性细胞死亡配体1 预后
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依赖IL-5增殖的细胞株TF-1-9E3的驯化及验证
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作者 李诗洁 代维燕 +5 位作者 王雪莲 柯文锋 韩飞 陈永奇 刘畅 白仲虎 《生物学杂志》 CAS CSCD 北大核心 2023年第6期109-114,共6页
在IL-5靶点药物的发现阶段,为评价候选药物的阻断活性,需建立依赖IL-5增殖且信噪比高、重现性好的检测用细胞株。TF-1是人白血病细胞,其生长完全依赖IL-3或GM-CSF,而IL-5与IL-3和GM-CSF共用β(βc)受体,因此,研究以GM-CSF依赖的TF-1细... 在IL-5靶点药物的发现阶段,为评价候选药物的阻断活性,需建立依赖IL-5增殖且信噪比高、重现性好的检测用细胞株。TF-1是人白血病细胞,其生长完全依赖IL-3或GM-CSF,而IL-5与IL-3和GM-CSF共用β(βc)受体,因此,研究以GM-CSF依赖的TF-1细胞株为来源,用IL-5替换TF-1细胞生长必需的生长因子GM-CSF,降低血清含量进行细胞驯化培养传代。通过35 d的细胞驯化及3~5次降血清传代培养,采用有限稀释法分离单克隆,一共得到14个单克隆细胞株。对14株细胞进行FACS检测,其中,有9个细胞株IL-5Rα表达量升高。对IL-5Rα过表达的细胞株进行IL-5增殖检测,结果表明,相比8%FBS得到的单克隆,6%FBS得到的单克隆对IL-5刺激更敏感。通过单因素优化实验,细胞增殖检测最优的细胞接种量为2×10^(4)个/孔,FBS含量为3%,血清品牌为Gibco。驯化后的细胞TF-1-9E3对IL-5的剂量-效应曲线的信噪比为3.19,Emax区间为2.15,可用于IL-5的生物学活性检测及IL-5与IL-5Rα的抗体阻断活性检测。 展开更多
关键词 IL-5 TF-1细胞 增殖 阻断活性 细胞驯化
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C-C趋化因子配体5通过诱导帕金森病模型小鼠外周Th17细胞比例增加、Treg细胞比例减少及促进Th17细胞表达淋巴细胞功能相关抗原1而加重神经炎症的研究 被引量:2
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作者 赵经纬 薛峥 +5 位作者 李静怡 屈艺 王丹蕾 李江婷 安珂 毛志娟 《临床神经病学杂志》 CAS 2023年第2期134-141,共8页
目的探讨帕金森病(PD)中C-C趋化因子配体5(CCL5)对外周CD4^(+)T细胞激活与分化的影响,以及CCL5对Th17细胞与Treg细胞向黑质(SN)迁移介导神经免疫炎症的影响。方法C57B6/J小鼠腹腔注射1-甲基-4-苯基-1,2,3,6-四氢吡啶(MPTP)构建PD动物模... 目的探讨帕金森病(PD)中C-C趋化因子配体5(CCL5)对外周CD4^(+)T细胞激活与分化的影响,以及CCL5对Th17细胞与Treg细胞向黑质(SN)迁移介导神经免疫炎症的影响。方法C57B6/J小鼠腹腔注射1-甲基-4-苯基-1,2,3,6-四氢吡啶(MPTP)构建PD动物模型,并进行CCL5腹腔注射干预。利用转棒实验和爬杆实验检测小鼠行为能力,利用流式细胞染色检测小鼠外周CD4^(+)T细胞比例及相关表型,利用Western blotting法检测小鼠SN中酪氨酸羟化酶(TH)和α-突触核蛋白的表达,利用免疫荧光染色检测小鼠SN中多巴胺能(DA)神经元数量和Th17/Treg细胞的浸润数量。结果MPTP小鼠与对照组小鼠相比运动功能显著降低,而干预CCL5进一步加重MPTP小鼠的运动功能障碍。MPTP小鼠较对照组小鼠表现为外周Th17细胞比例增加而Treg细胞比例减少;而CCL5干预不仅诱导MPTP小鼠外周Th17细胞比例进一步增加和Treg细胞比例进一步减少,还能够增加淋巴细胞功能相关抗原1(LFA-1)在Th17细胞上的表达但不影响其在Treg细胞中的表达。在中枢,MPTP小鼠SN中DA神经元数量减少、Th17细胞浸润数量增加而Treg细胞浸润数量减少;MPTP小鼠经CCL5干预后,SN中DA神经元数量进一步减少、Th17细胞浸润数量显著增加和Treg细胞浸润数量显著减少。结论CCL5能够诱导MPTP小鼠外周Th17细胞比例增加和Treg细胞比例减少以及诱导Th17细胞表达LFA-1,导致MPTP小鼠SN中Th17细胞数量增加而Treg细胞数量减少,从而加重中枢神经炎症和DA神经元损伤。 展开更多
关键词 帕金森病 TH17细胞 Treg细胞 C-C趋化因子配体5 淋巴细胞功能相关抗原1
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