Integrin α11 (ITGA11) is one of the collagen-binding integrin α chains;however, its biological significance remains unknown. To determine the functions of ITGA11, we performed a yeast two-hybrid screen using the cyt...Integrin α11 (ITGA11) is one of the collagen-binding integrin α chains;however, its biological significance remains unknown. To determine the functions of ITGA11, we performed a yeast two-hybrid screen using the cytoplasmic domain of ITGA11 as bait and transformed an EGY48 yeast strain with the bait-containing plasmid using the plasmid from a human lung fibroblast cDNA library. This screen identified calcium- and integrin-binding protein 1 (CIB1) as prey. Recombinant ITGA11 and CIB1 were expressed in mammalian cells and used in coimmunoprecipitation experiments, which showed that full-length ITGA11 and CIB1 are also associated in vivo. Over-expression of CIB1 in the human lung myofibroblast MRC-5 cells decreased the expression of α-smooth muscle actin and fibronectin. Using a mouse model of pulmonary fibrosis (bleomycin-treatment), we detected elevated expression of CIB1 in lung tissues compared with controls. These data suggest that CIB1 may regulate pulmonary fibrosis in concert with IT-GA11.展开更多
目的探究血清S100钙结合蛋白A8(S100A8)和程序性死亡配体-1(PD-L1)联合超声检测在子宫内膜癌诊断及预后中的价值。方法选取2020年4月至2022年4月于我院收治的确诊为子宫内膜癌的患者166例即为癌症组,按照国际妇产科联合会(FIGO)标准分...目的探究血清S100钙结合蛋白A8(S100A8)和程序性死亡配体-1(PD-L1)联合超声检测在子宫内膜癌诊断及预后中的价值。方法选取2020年4月至2022年4月于我院收治的确诊为子宫内膜癌的患者166例即为癌症组,按照国际妇产科联合会(FIGO)标准分为Ⅰ期48例、Ⅱ期52例、Ⅲ期42例、Ⅳ期24例。选择同期在我院确诊为子宫内膜增生的患者166例为对照组;使用酶联免疫吸附试验(ELISA)检测血清中S100A8和PD-L1水平;使用阴道超声获取血流频谱测得血流参数:搏动指数(PI)、阻力指数(RI)。采用受试者工作特征(ROC)曲线分析血清S100A8和PD-L1联合超声参数对子宫内膜癌的诊断价值以及预后的预测价值。结果与对照组相比,癌症组患者血清中S100A8和PD-L1水平显著升高(t=10.688、8.605,均P<0.001);与Ⅰ期相比,Ⅱ期、Ⅲ期、Ⅳ期患者血清中S100A8和PD-L1水平显著升高,与Ⅱ期相比,Ⅳ期患者血清中S100A8和PD-L1水平显著升高(P<0.05)。与对照组相比,癌症组PI和RI的值显著降低(t=7.183、6.799,均P<0.001);血清S100A8和PD-L1联合超声参数对子宫内膜癌诊断的曲线下面积(AUC)高于各指标单独诊断的AUC值(Z S100A8 vs.S100A8+PD-L1+PI+RI=6.472,Z PD-L1 vs.S100A8+PD-L1+PI+RI=6.903,Z PI vs.S100A8+PD-L1+PI+RI=7.072,Z RI vs.S100A8+PD-L1+PI+RI=5.987,均P<0.001);与预后良好组相比,预后不良组S100A8、PD-L1水平显著升高,PI、RI水平显著降低(P<0.001);血清S100A8和PD-L1联合超声参数对子宫内膜癌预后预测的AUC高于各指标单独预测的AUC值(Z S100A8 vs.S100A8+PD-L1+PI+RI=2.841,P=0.005;Z PD-L1 vs.S100A8+PD-L1+PI+RI=2.146,P=0.032;Z PI vs.S100A8+PD-L1+PI+RI=6.056,P<0.001;Z RI vs.S100A8+PD-L1+PI+RI=4.370,P<0.001)。结论子宫内膜癌患者血清中S100A8和PD-L1水平显著升高,血清S100A8和PD-L1联合超声能够提高对子宫内膜癌诊断及预后价值。展开更多
目的:研究S100钙结合蛋白A9(S100 calcium-binding protein A9,S100A9)与T细胞受体伴侣蛋白1,亚基3(chaperonin containing T-complex protein 1,subunit 3,CCTγ)作为潜在的生物标志物对胆管癌的诊断意义。方法:利用组织芯片技术对40...目的:研究S100钙结合蛋白A9(S100 calcium-binding protein A9,S100A9)与T细胞受体伴侣蛋白1,亚基3(chaperonin containing T-complex protein 1,subunit 3,CCTγ)作为潜在的生物标志物对胆管癌的诊断意义。方法:利用组织芯片技术对40例胆管癌组织和10例非肿瘤组织的S100A9与CCTγ表达情况做对比分析。阳性结果分为4级,*1、1、2和3级分别代表弱阳性、轻度阳性、中度阳性和强阳性。结果:S100A9在非肿瘤肝组织内无表达或低表达(7例无表达,3例低表达)。在胆管癌病人中,40例中有37例染色阳性。胆管癌病人阳性表达水平为(0.48±0.35),明显高于非肿瘤对照组(0.05±0.1)(P<0.001)。CCTγ也在非肿瘤肝组织中呈现低表达,胆管癌病人的阳性表达水平为(0.72±0.18),显著高于非肿瘤对照组(0.43±0.22)(P<0.001)。S100A9和CCTγ的ROC曲线下面积分别是0.894(95%CI为0.825~0.962)和0.860(95%CI为0.779~0.942)。结论:S100A9和CCTγ对胆管癌的诊断具有一定价值。对于血清S100A9和CCTγ的进一步研究可发现对胆管癌有诊断意义的肿瘤标志物。展开更多
目的构建人钙整合素结合蛋白1(calcium-and integrin-binding protein 1,CIB1)基因RNA干扰慢病毒载体,获得稳定下调CIB1表达的慢病毒。方法根据CIB1的序列,设计siRNA序列,克隆入慢病毒核心质粒pGV112中,并与辅助质粒一起转染293T细胞进...目的构建人钙整合素结合蛋白1(calcium-and integrin-binding protein 1,CIB1)基因RNA干扰慢病毒载体,获得稳定下调CIB1表达的慢病毒。方法根据CIB1的序列,设计siRNA序列,克隆入慢病毒核心质粒pGV112中,并与辅助质粒一起转染293T细胞进行病毒包装,用慢病毒感染293T细胞并测定病毒滴度。以CIB1干扰慢病毒感染人胶质瘤细胞SHG44后,应用Western blotting方法检测CIB1的表达。结果成功构建CIB1干扰慢病毒载体,包装后获得慢病毒颗粒,病毒滴度检测可达6×108pfu/ml,感染细胞CIB1蛋白表达水平显著下调(P<0.01)。结论成功构建人CIB1基因RNA干扰慢病毒,为后续CIB1生物学功能研究奠定基础。展开更多
文摘Integrin α11 (ITGA11) is one of the collagen-binding integrin α chains;however, its biological significance remains unknown. To determine the functions of ITGA11, we performed a yeast two-hybrid screen using the cytoplasmic domain of ITGA11 as bait and transformed an EGY48 yeast strain with the bait-containing plasmid using the plasmid from a human lung fibroblast cDNA library. This screen identified calcium- and integrin-binding protein 1 (CIB1) as prey. Recombinant ITGA11 and CIB1 were expressed in mammalian cells and used in coimmunoprecipitation experiments, which showed that full-length ITGA11 and CIB1 are also associated in vivo. Over-expression of CIB1 in the human lung myofibroblast MRC-5 cells decreased the expression of α-smooth muscle actin and fibronectin. Using a mouse model of pulmonary fibrosis (bleomycin-treatment), we detected elevated expression of CIB1 in lung tissues compared with controls. These data suggest that CIB1 may regulate pulmonary fibrosis in concert with IT-GA11.
文摘目的探究血清S100钙结合蛋白A8(S100A8)和程序性死亡配体-1(PD-L1)联合超声检测在子宫内膜癌诊断及预后中的价值。方法选取2020年4月至2022年4月于我院收治的确诊为子宫内膜癌的患者166例即为癌症组,按照国际妇产科联合会(FIGO)标准分为Ⅰ期48例、Ⅱ期52例、Ⅲ期42例、Ⅳ期24例。选择同期在我院确诊为子宫内膜增生的患者166例为对照组;使用酶联免疫吸附试验(ELISA)检测血清中S100A8和PD-L1水平;使用阴道超声获取血流频谱测得血流参数:搏动指数(PI)、阻力指数(RI)。采用受试者工作特征(ROC)曲线分析血清S100A8和PD-L1联合超声参数对子宫内膜癌的诊断价值以及预后的预测价值。结果与对照组相比,癌症组患者血清中S100A8和PD-L1水平显著升高(t=10.688、8.605,均P<0.001);与Ⅰ期相比,Ⅱ期、Ⅲ期、Ⅳ期患者血清中S100A8和PD-L1水平显著升高,与Ⅱ期相比,Ⅳ期患者血清中S100A8和PD-L1水平显著升高(P<0.05)。与对照组相比,癌症组PI和RI的值显著降低(t=7.183、6.799,均P<0.001);血清S100A8和PD-L1联合超声参数对子宫内膜癌诊断的曲线下面积(AUC)高于各指标单独诊断的AUC值(Z S100A8 vs.S100A8+PD-L1+PI+RI=6.472,Z PD-L1 vs.S100A8+PD-L1+PI+RI=6.903,Z PI vs.S100A8+PD-L1+PI+RI=7.072,Z RI vs.S100A8+PD-L1+PI+RI=5.987,均P<0.001);与预后良好组相比,预后不良组S100A8、PD-L1水平显著升高,PI、RI水平显著降低(P<0.001);血清S100A8和PD-L1联合超声参数对子宫内膜癌预后预测的AUC高于各指标单独预测的AUC值(Z S100A8 vs.S100A8+PD-L1+PI+RI=2.841,P=0.005;Z PD-L1 vs.S100A8+PD-L1+PI+RI=2.146,P=0.032;Z PI vs.S100A8+PD-L1+PI+RI=6.056,P<0.001;Z RI vs.S100A8+PD-L1+PI+RI=4.370,P<0.001)。结论子宫内膜癌患者血清中S100A8和PD-L1水平显著升高,血清S100A8和PD-L1联合超声能够提高对子宫内膜癌诊断及预后价值。
文摘目的:研究S100钙结合蛋白A9(S100 calcium-binding protein A9,S100A9)与T细胞受体伴侣蛋白1,亚基3(chaperonin containing T-complex protein 1,subunit 3,CCTγ)作为潜在的生物标志物对胆管癌的诊断意义。方法:利用组织芯片技术对40例胆管癌组织和10例非肿瘤组织的S100A9与CCTγ表达情况做对比分析。阳性结果分为4级,*1、1、2和3级分别代表弱阳性、轻度阳性、中度阳性和强阳性。结果:S100A9在非肿瘤肝组织内无表达或低表达(7例无表达,3例低表达)。在胆管癌病人中,40例中有37例染色阳性。胆管癌病人阳性表达水平为(0.48±0.35),明显高于非肿瘤对照组(0.05±0.1)(P<0.001)。CCTγ也在非肿瘤肝组织中呈现低表达,胆管癌病人的阳性表达水平为(0.72±0.18),显著高于非肿瘤对照组(0.43±0.22)(P<0.001)。S100A9和CCTγ的ROC曲线下面积分别是0.894(95%CI为0.825~0.962)和0.860(95%CI为0.779~0.942)。结论:S100A9和CCTγ对胆管癌的诊断具有一定价值。对于血清S100A9和CCTγ的进一步研究可发现对胆管癌有诊断意义的肿瘤标志物。
文摘目的构建人钙整合素结合蛋白1(calcium-and integrin-binding protein 1,CIB1)基因RNA干扰慢病毒载体,获得稳定下调CIB1表达的慢病毒。方法根据CIB1的序列,设计siRNA序列,克隆入慢病毒核心质粒pGV112中,并与辅助质粒一起转染293T细胞进行病毒包装,用慢病毒感染293T细胞并测定病毒滴度。以CIB1干扰慢病毒感染人胶质瘤细胞SHG44后,应用Western blotting方法检测CIB1的表达。结果成功构建CIB1干扰慢病毒载体,包装后获得慢病毒颗粒,病毒滴度检测可达6×108pfu/ml,感染细胞CIB1蛋白表达水平显著下调(P<0.01)。结论成功构建人CIB1基因RNA干扰慢病毒,为后续CIB1生物学功能研究奠定基础。