AIM: To investigate the correlation between clinicopathology and expression of heat shock protein 70 (HSP70) and glucose-regulated protein 94 (grp94) in human colonic carcinoma. METHODS: The expression of HSP70 and gr...AIM: To investigate the correlation between clinicopathology and expression of heat shock protein 70 (HSP70) and glucose-regulated protein 94 (grp94) in human colonic carcinoma. METHODS: The expression of HSP70 and grp94 was studied in 80 human colonic cancers with or without metastasis as well as in their adjacent mucous membrane by way of immunohistochemistry and pathology photograph analysis. RESULTS: The expression of HSP70 and grp94 was significantly higher in cancer than that in adjacent mucous membrane (92.5%, 85.0% vs 56.3%, 42.5%, P<0.01). HSP70 and grp94 expressed higher in moderately- and poorly-differentiated colonic cancers than that in their adjacent tissues (93.7%, 87.5%; 100%, 90% vs56.3%, 42.5%;P<0.01). Dukes C and D stages of colonic cancers showed higher positive rates than Dukes A and B stage groups (97.1%, 91.2%; 100%, 90.9%; vs 80%, 70%; 78.6%, 71.4%; P<0.05). There were definite differences in HSP70 and grp94 expression between metastasis groups and non-metastasis groups (100% vs 75%, 100% CONCLUSION: The HSP70 and grp94 expression rates in colonic cancer groups are significantly higher than that in their adjacent mucous membrane. The HSP70 and grp94 expression in poorly-differentiated colonic cancers with metastasis is significantly higher than well-differentiated cancers without metastasis. The overexpression of HSP70 and grp94 can be used as diagnostic or prognostic markers for colonic cancer.展开更多
AIM: To investigate the expression and significance of heat shock protein 70 (HSP70) and glucose-regulated protein 94 (grp94) in human esophageai carcinoma and adjacent normal tissues. METHODS: The expression of HSP70...AIM: To investigate the expression and significance of heat shock protein 70 (HSP70) and glucose-regulated protein 94 (grp94) in human esophageai carcinoma and adjacent normal tissues. METHODS: The expression of HSP70 and grp94 in 78 human esophageai cancer and adjacent normal tissues was studied by immunohistochemistry and pathology photograph analysis. RESULTS: Both esophageai cancer and adjacent normal tissues could express HSP70 and grp94. Of the 78 cases of esophageai carcinoma, 95.0%(72/78) showed positive HSP70, mainly stained in nuclei, while grp94 was mainly stained in cell plasma, and the positive rate was 71.8% (56/78).There was a significant difference in the expression of HSP70 and grp94 between esophageai cancer and adjacent normal tissues (P<0.01). Compared with adjacent normal tissues, there was a significant difference between differential types and HSP70 expression (P<0.01). CONCLUSION: HSP70 and grp94 express differently in cell plasma and nuclei. The expression intensity of HSP70 is related to the differentiation of esophageai carcinoma.展开更多
AIM:To investigate the co-expression and significance of heat shock protein 70 (HSP70) and glucose-regulated protein 94 (grp94) in human gastric carcinoma cell line BGC-823. METHODS: The expression and localization of...AIM:To investigate the co-expression and significance of heat shock protein 70 (HSP70) and glucose-regulated protein 94 (grp94) in human gastric carcinoma cell line BGC-823. METHODS: The expression and localization of HSP70 and grp94 in human gastric carcinoma cell line BGC-823 were determined by immunocytochemistry and indirect immunofluorescence cytochemical staining. Flow cytometry was used to analyze the correlation between expression of HSP70, grp94 and cell cycle in BGC-823 cell line. RESULTS: Gastric cancer cell line BGC-823 expressed high level of HSP70 and grp94. The positive rate of HSP70 and grp94 was 84.9±4.94% and 79.6±5.16%, respectively. Both of them were stained in cell plasma. There was a significant difference compared with control group (1.9±0.94%, P<0.01). During the cell cycle, HSP70 and grp94 were continuously expressed in BGC-823. CONCLUSION: HSP70 and grp94 are highly expressed in human gastric carcinoma BGC-823 cells through the whole cell cycle. There is no relationship between expression of HSP70, grp94 and cell cycle.展开更多
目的确定葡萄糖调节蛋白78(glucose-regulated protein 78,GRP78)和葡萄糖调节蛋白94(glucose-regulated protein 94,GRP94)与胃癌(gastric cancer,GC)临床病理特征及预后的相关性。方法应用Western blotting和免疫组织化学方法检测GC...目的确定葡萄糖调节蛋白78(glucose-regulated protein 78,GRP78)和葡萄糖调节蛋白94(glucose-regulated protein 94,GRP94)与胃癌(gastric cancer,GC)临床病理特征及预后的相关性。方法应用Western blotting和免疫组织化学方法检测GC和切缘组织中GRP78和GRP94的表达;Kaplan-Meier或卡方检验GRP78、GRP94和临床病理资料与GC术后整体生存期相关性。结果 GRP78和GRP94蛋白主要表达于胃癌细胞的胞质及胞膜,其阳性表达与淋巴结转移、TNM分期呈负相关,与分化程度正相关(P<0.05);GRP78、GRP94高表达及低表达GC患者术后平均生存时间分别为(23.51±2.32)个月和(37.54±3.24)个月、(21.31±1.46)个月和(40.02±2.19)个月,5年整体生存率分别为21.23%和41.42%、20.73%和43.86%(log-rank test,P<0.01),TNM分期、GRP78和GRP94是影响GC预后的独立因素。结论 GRP78和GRP94高表达可能是GC预后不良的分子标志物之一。展开更多
目的探讨葡萄糖调节蛋白94(glucose-regulated protein 94,GRP94)、转化生长因子-β1(transforming growth factor-β1,TGF-β1)水平对房颤患者消融术后远期复发事件的预测价值。方法选择因房颤行射频消融术的住院患者共202例,统一归于...目的探讨葡萄糖调节蛋白94(glucose-regulated protein 94,GRP94)、转化生长因子-β1(transforming growth factor-β1,TGF-β1)水平对房颤患者消融术后远期复发事件的预测价值。方法选择因房颤行射频消融术的住院患者共202例,统一归于房颤组,再依据房颤发生及持续的时间进一步分为阵发性房颤组(n=132)和持续性房颤组(n=70);另选择窦性心律且既往无房颤心律的健康体检者作为对照组(n=55)。通过酶联免疫吸附试验测定患者的血清GRP94及TGF-β1水平,并收集基线资料。出院后以门诊或电话形式对房颤患者进行随访,利用受试者工作特征曲线和Kaplan-Meier生存分析评估血清GRP94、TGF-β1水平对房颤患者消融术后远期复发事件的预测价值。结果在对照组、阵发性房颤组、持续性房颤组中,血清GRP94及TGF-β1水平依次升高。二元Logistic回归分析提示,血清TGF-β1、GRP94和体重指数是房颤发生的独立危险因素。Spearman相关性分析显示,在房颤患者血清中GRP94和TGF-β1水平呈正相关。复发组的TGF-β1高于非复发组,GRP94低于非复发组。二元Logistic回归分析表明,TGF-β1是房颤术后复发的独立危险因素,GRP94是房颤复发的独立保护因素。Kaplan-Meier曲线分析显示,GRP94高水平、TGF-β1低水平的房颤患者消融术后复发的风险低,且未复发时间更长。结论GRP94及TGF-β1水平与房颤密切相关,可能为房颤患者消融术后复发的早期识别、诊断及预防提供依据。展开更多
葡萄糖调节蛋白94(glucose-regulated protein 94,Grp94)是Hsp90在内质网中的亚型,其调控的客户蛋白较专一。选择性抑制Grp94已经成为靶向Hsp90伴侣系统开发药物的新方向。本研究以前期得到的高活性、高选择性Grp94抑制剂DDO-5813为基础...葡萄糖调节蛋白94(glucose-regulated protein 94,Grp94)是Hsp90在内质网中的亚型,其调控的客户蛋白较专一。选择性抑制Grp94已经成为靶向Hsp90伴侣系统开发药物的新方向。本研究以前期得到的高活性、高选择性Grp94抑制剂DDO-5813为基础,设计并合成得到了Grp94特异性荧光探针Grp94-Probe。采用荧光偏振实验和细胞内与ER-Red共染色实验证明Grp94-Probe与Grp94特异性结合作用。荧光偏振实验结果表明,Grp94-Probe能够较好地与Grp94~N结合(EC_(50)=117.9 nmol/L),且其作为探针分子可以较好的区分化合物对Grp94~N抑制活性的强弱。细胞内荧光成像实验结果显示,Grp94-Probe能够在细胞内质网与ER-Red共染色,表明Grp94-Probe能在细胞内与Grp94结合。该荧光探针为开发Grp94抑制剂提供了活性测试工具分子,为探索细胞内Grp94的化学生物学功能提供了有利工具。展开更多
基金Supported by the Research Fund for Young Scholars of Beijing,No. 02120031
文摘AIM: To investigate the correlation between clinicopathology and expression of heat shock protein 70 (HSP70) and glucose-regulated protein 94 (grp94) in human colonic carcinoma. METHODS: The expression of HSP70 and grp94 was studied in 80 human colonic cancers with or without metastasis as well as in their adjacent mucous membrane by way of immunohistochemistry and pathology photograph analysis. RESULTS: The expression of HSP70 and grp94 was significantly higher in cancer than that in adjacent mucous membrane (92.5%, 85.0% vs 56.3%, 42.5%, P<0.01). HSP70 and grp94 expressed higher in moderately- and poorly-differentiated colonic cancers than that in their adjacent tissues (93.7%, 87.5%; 100%, 90% vs56.3%, 42.5%;P<0.01). Dukes C and D stages of colonic cancers showed higher positive rates than Dukes A and B stage groups (97.1%, 91.2%; 100%, 90.9%; vs 80%, 70%; 78.6%, 71.4%; P<0.05). There were definite differences in HSP70 and grp94 expression between metastasis groups and non-metastasis groups (100% vs 75%, 100% CONCLUSION: The HSP70 and grp94 expression rates in colonic cancer groups are significantly higher than that in their adjacent mucous membrane. The HSP70 and grp94 expression in poorly-differentiated colonic cancers with metastasis is significantly higher than well-differentiated cancers without metastasis. The overexpression of HSP70 and grp94 can be used as diagnostic or prognostic markers for colonic cancer.
基金Supported by the Youth Research Scientific Foundation of Beijing (02-31)
文摘AIM: To investigate the expression and significance of heat shock protein 70 (HSP70) and glucose-regulated protein 94 (grp94) in human esophageai carcinoma and adjacent normal tissues. METHODS: The expression of HSP70 and grp94 in 78 human esophageai cancer and adjacent normal tissues was studied by immunohistochemistry and pathology photograph analysis. RESULTS: Both esophageai cancer and adjacent normal tissues could express HSP70 and grp94. Of the 78 cases of esophageai carcinoma, 95.0%(72/78) showed positive HSP70, mainly stained in nuclei, while grp94 was mainly stained in cell plasma, and the positive rate was 71.8% (56/78).There was a significant difference in the expression of HSP70 and grp94 between esophageai cancer and adjacent normal tissues (P<0.01). Compared with adjacent normal tissues, there was a significant difference between differential types and HSP70 expression (P<0.01). CONCLUSION: HSP70 and grp94 express differently in cell plasma and nuclei. The expression intensity of HSP70 is related to the differentiation of esophageai carcinoma.
基金Supported by the Research Fund for Young Scholars of Beijing,No.02120031Research Program of Beijing Education Committee,No.0410025002
文摘AIM:To investigate the co-expression and significance of heat shock protein 70 (HSP70) and glucose-regulated protein 94 (grp94) in human gastric carcinoma cell line BGC-823. METHODS: The expression and localization of HSP70 and grp94 in human gastric carcinoma cell line BGC-823 were determined by immunocytochemistry and indirect immunofluorescence cytochemical staining. Flow cytometry was used to analyze the correlation between expression of HSP70, grp94 and cell cycle in BGC-823 cell line. RESULTS: Gastric cancer cell line BGC-823 expressed high level of HSP70 and grp94. The positive rate of HSP70 and grp94 was 84.9±4.94% and 79.6±5.16%, respectively. Both of them were stained in cell plasma. There was a significant difference compared with control group (1.9±0.94%, P<0.01). During the cell cycle, HSP70 and grp94 were continuously expressed in BGC-823. CONCLUSION: HSP70 and grp94 are highly expressed in human gastric carcinoma BGC-823 cells through the whole cell cycle. There is no relationship between expression of HSP70, grp94 and cell cycle.
文摘目的确定葡萄糖调节蛋白78(glucose-regulated protein 78,GRP78)和葡萄糖调节蛋白94(glucose-regulated protein 94,GRP94)与胃癌(gastric cancer,GC)临床病理特征及预后的相关性。方法应用Western blotting和免疫组织化学方法检测GC和切缘组织中GRP78和GRP94的表达;Kaplan-Meier或卡方检验GRP78、GRP94和临床病理资料与GC术后整体生存期相关性。结果 GRP78和GRP94蛋白主要表达于胃癌细胞的胞质及胞膜,其阳性表达与淋巴结转移、TNM分期呈负相关,与分化程度正相关(P<0.05);GRP78、GRP94高表达及低表达GC患者术后平均生存时间分别为(23.51±2.32)个月和(37.54±3.24)个月、(21.31±1.46)个月和(40.02±2.19)个月,5年整体生存率分别为21.23%和41.42%、20.73%和43.86%(log-rank test,P<0.01),TNM分期、GRP78和GRP94是影响GC预后的独立因素。结论 GRP78和GRP94高表达可能是GC预后不良的分子标志物之一。
文摘目的探讨葡萄糖调节蛋白94(glucose-regulated protein 94,GRP94)、转化生长因子-β1(transforming growth factor-β1,TGF-β1)水平对房颤患者消融术后远期复发事件的预测价值。方法选择因房颤行射频消融术的住院患者共202例,统一归于房颤组,再依据房颤发生及持续的时间进一步分为阵发性房颤组(n=132)和持续性房颤组(n=70);另选择窦性心律且既往无房颤心律的健康体检者作为对照组(n=55)。通过酶联免疫吸附试验测定患者的血清GRP94及TGF-β1水平,并收集基线资料。出院后以门诊或电话形式对房颤患者进行随访,利用受试者工作特征曲线和Kaplan-Meier生存分析评估血清GRP94、TGF-β1水平对房颤患者消融术后远期复发事件的预测价值。结果在对照组、阵发性房颤组、持续性房颤组中,血清GRP94及TGF-β1水平依次升高。二元Logistic回归分析提示,血清TGF-β1、GRP94和体重指数是房颤发生的独立危险因素。Spearman相关性分析显示,在房颤患者血清中GRP94和TGF-β1水平呈正相关。复发组的TGF-β1高于非复发组,GRP94低于非复发组。二元Logistic回归分析表明,TGF-β1是房颤术后复发的独立危险因素,GRP94是房颤复发的独立保护因素。Kaplan-Meier曲线分析显示,GRP94高水平、TGF-β1低水平的房颤患者消融术后复发的风险低,且未复发时间更长。结论GRP94及TGF-β1水平与房颤密切相关,可能为房颤患者消融术后复发的早期识别、诊断及预防提供依据。
文摘葡萄糖调节蛋白94(glucose-regulated protein 94,Grp94)是Hsp90在内质网中的亚型,其调控的客户蛋白较专一。选择性抑制Grp94已经成为靶向Hsp90伴侣系统开发药物的新方向。本研究以前期得到的高活性、高选择性Grp94抑制剂DDO-5813为基础,设计并合成得到了Grp94特异性荧光探针Grp94-Probe。采用荧光偏振实验和细胞内与ER-Red共染色实验证明Grp94-Probe与Grp94特异性结合作用。荧光偏振实验结果表明,Grp94-Probe能够较好地与Grp94~N结合(EC_(50)=117.9 nmol/L),且其作为探针分子可以较好的区分化合物对Grp94~N抑制活性的强弱。细胞内荧光成像实验结果显示,Grp94-Probe能够在细胞内质网与ER-Red共染色,表明Grp94-Probe能在细胞内与Grp94结合。该荧光探针为开发Grp94抑制剂提供了活性测试工具分子,为探索细胞内Grp94的化学生物学功能提供了有利工具。
