The expression of c-met stimulated by high glucose in human renal tubular epithelial ceils and the role of HGF/c-met system in diabetic nephropathy were examined. The proximal tubular epithelial cells were cultured in...The expression of c-met stimulated by high glucose in human renal tubular epithelial ceils and the role of HGF/c-met system in diabetic nephropathy were examined. The proximal tubular epithelial cells were cultured in vitro under different conditions. MTT was used for the detection of cellular proliferation and RT-PCR was employed for measurement of c-met mRNA level. Our results showed that under different conditions, there were no significant differences in the proliferation of proximal tubular epithelial cells 12 h and 24 h after the culuture （P〉0.05）. The proliferation of proximal tubular epithelial cells showed a significant change 96 h after the culture and the cellular proliferation induced by hepatocyte growth factor （HGF） was very active （P〈0.05）. Moreover, no significant difference in the expression of c-met mRNA was found 12 h after the culture under different conditions （P〉0.05）, while 24 and 96 h after the culture, a persistent and significantly higher expression of c-met mRNA was found in HGF-induced proliferation. It is concluded that addition of exogenous HGF could inhibit the apoptosis induced by high-level glucose, promote the proliferation of proximal tubular epithelial cells, and induce the expression of c-met. Our study suggests that local up-regulation of HGF/c-met system plays an important role in the repair of renal damage in diabetic nephropathy.展开更多
目的探讨结肠癌转移相关基因1(metastasis-associated in colon cancer-1,MACC1)、肝细胞生长因子(HGF)和C-met蛋白在子宫内膜癌中的表达以及其相关的临床病理特点。方法应用免疫组织化学和RT-PCR技术检测2009年1月至2011年7月郑州大学...目的探讨结肠癌转移相关基因1(metastasis-associated in colon cancer-1,MACC1)、肝细胞生长因子(HGF)和C-met蛋白在子宫内膜癌中的表达以及其相关的临床病理特点。方法应用免疫组织化学和RT-PCR技术检测2009年1月至2011年7月郑州大学第一附属医院妇产科行手术治疗的子宫内膜癌患者的癌变内膜标本39例及同期25例不典型增生的子宫内膜、25例单纯性增生子宫内膜、25例正常子宫内膜中MACC1、HGF和C-met蛋白、mRNA的表达情况,并分析3者与子宫内膜癌临床病理特征的关系及其相关性。结果 MACC1、HGF和C-met蛋白在子宫内膜癌组织中的阳性率分别为64.1%、61.5%和69.2%,显著高于正常、单纯增生以及不典型增生的内膜组织,差异均有统计学意义(P<0.05)。子宫内膜癌中MACC1、HGF、MET基因的mRNA相对表达量分别为0.216±0.062、0.134±0.054、0.172±0.044,也明显高于其他3组,差异均有统计学意义(P<0.05)。MACC1、HGF和C-met蛋白的异常高表达与子宫内膜癌的临床分期、肌层浸润和淋巴结转移相关,临床分期越晚、肌层浸润越深、伴随淋巴结转移的癌组织中MACC1、HGF和C-met蛋白表达越高(P<0.05)。子宫内膜癌组织中MACC1蛋白的表达与HGF和C-met蛋白的表达呈正相关(r=0.525,P=0.000;r=0.393,P=0.008),HGF蛋白与C-met蛋白表达呈正相关(r=0.334,P=0.027)。结论在子宫内膜癌组织中MACC1具有作为子宫内膜癌诊断、治疗评估分子标志物的潜在价值,MACC1、HGF和C-met蛋白表达异常可能协同参与子宫内膜癌的进展。展开更多
文摘The expression of c-met stimulated by high glucose in human renal tubular epithelial ceils and the role of HGF/c-met system in diabetic nephropathy were examined. The proximal tubular epithelial cells were cultured in vitro under different conditions. MTT was used for the detection of cellular proliferation and RT-PCR was employed for measurement of c-met mRNA level. Our results showed that under different conditions, there were no significant differences in the proliferation of proximal tubular epithelial cells 12 h and 24 h after the culuture （P〉0.05）. The proliferation of proximal tubular epithelial cells showed a significant change 96 h after the culture and the cellular proliferation induced by hepatocyte growth factor （HGF） was very active （P〈0.05）. Moreover, no significant difference in the expression of c-met mRNA was found 12 h after the culture under different conditions （P〉0.05）, while 24 and 96 h after the culture, a persistent and significantly higher expression of c-met mRNA was found in HGF-induced proliferation. It is concluded that addition of exogenous HGF could inhibit the apoptosis induced by high-level glucose, promote the proliferation of proximal tubular epithelial cells, and induce the expression of c-met. Our study suggests that local up-regulation of HGF/c-met system plays an important role in the repair of renal damage in diabetic nephropathy.
文摘目的探讨结肠癌转移相关基因1(metastasis-associated in colon cancer-1,MACC1)、肝细胞生长因子(HGF)和C-met蛋白在子宫内膜癌中的表达以及其相关的临床病理特点。方法应用免疫组织化学和RT-PCR技术检测2009年1月至2011年7月郑州大学第一附属医院妇产科行手术治疗的子宫内膜癌患者的癌变内膜标本39例及同期25例不典型增生的子宫内膜、25例单纯性增生子宫内膜、25例正常子宫内膜中MACC1、HGF和C-met蛋白、mRNA的表达情况,并分析3者与子宫内膜癌临床病理特征的关系及其相关性。结果 MACC1、HGF和C-met蛋白在子宫内膜癌组织中的阳性率分别为64.1%、61.5%和69.2%,显著高于正常、单纯增生以及不典型增生的内膜组织,差异均有统计学意义(P<0.05)。子宫内膜癌中MACC1、HGF、MET基因的mRNA相对表达量分别为0.216±0.062、0.134±0.054、0.172±0.044,也明显高于其他3组,差异均有统计学意义(P<0.05)。MACC1、HGF和C-met蛋白的异常高表达与子宫内膜癌的临床分期、肌层浸润和淋巴结转移相关,临床分期越晚、肌层浸润越深、伴随淋巴结转移的癌组织中MACC1、HGF和C-met蛋白表达越高(P<0.05)。子宫内膜癌组织中MACC1蛋白的表达与HGF和C-met蛋白的表达呈正相关(r=0.525,P=0.000;r=0.393,P=0.008),HGF蛋白与C-met蛋白表达呈正相关(r=0.334,P=0.027)。结论在子宫内膜癌组织中MACC1具有作为子宫内膜癌诊断、治疗评估分子标志物的潜在价值,MACC1、HGF和C-met蛋白表达异常可能协同参与子宫内膜癌的进展。
