[目的]探讨底板反应蛋白1(SPON1)介导波形蛋白(Vimentin)/上皮型钙粘素(E-cadherin)信号通路对于结直肠癌细胞转移的影响。[方法]采集2021年4月-2022年7月手术的78例结直肠癌患者的癌组织及癌旁组织制作石蜡标本,免疫组化法检测其SPON1...[目的]探讨底板反应蛋白1(SPON1)介导波形蛋白(Vimentin)/上皮型钙粘素(E-cadherin)信号通路对于结直肠癌细胞转移的影响。[方法]采集2021年4月-2022年7月手术的78例结直肠癌患者的癌组织及癌旁组织制作石蜡标本,免疫组化法检测其SPON1蛋白水平。随机将SW620细胞分为空白组、阴性对照组和SPON1敲低组,将阴性对照质粒、SPON1敲低质粒分别转入阴性对照组和SPON1敲低组的SW620细胞中,构建细胞模型,检测EMT相关蛋白Vimentin、E-cadherin蛋白表达。[结果]结直肠癌组织SPON1蛋白阳性表达率85.90%(67/78)高于癌旁组织16.67%(13/78),其SPON1蛋白高表达率84.62%(66/78)高于癌旁组织19.23%(15/78)。与空白组、阴性对照组的SW620细胞比较,SPON1敲低组的SW620细胞侵袭数量与迁移率降低(89.26±8.19 vs 89.26±8.19 vs 22.38±5.11/个;75.23%±6.28%vs 78.15%±11.29%vs 26.73%±3.16%);SPON1敲低组的SW620细胞中SPON1 mRNA、SPON1和Vimentin蛋白水平下降(P<0.05),E-cadherin蛋白水平增加(P<0.05)。[结论]SPON1在结肠癌中表达上调,敲低SPON1的表达能下调Vimentin表达,上调E-cadherin表达,抑制结肠癌细胞的转移。展开更多
Background Coronary microembolization （CME） is characterized by distal microvascular occlusion. However, the inflammatory mechanisms and therapeutic targets of CME are largely unknown. Methods A total of 11 Guangxi ...Background Coronary microembolization （CME） is characterized by distal microvascular occlusion. However, the inflammatory mechanisms and therapeutic targets of CME are largely unknown. Methods A total of 11 Guangxi Bama miniature swines were divided into two groups： sham （n = 5） and CME （n = 6）. Microspheres were injected into the left anterior descending artery of the CME group to make an animal model of CME. The expres- sions of microRNA-146a （miR-146a） and IRAK1, TRAF6, and AUF1 in the myocardium were detected by qPCR. Results In the CME group, microspheres, microinfarction, and inflammatory cell infiltration were found under an optical microscope. The expression levels of miR-146a were low in both groups. After CME, the expression levels of IRAK1, TRAF6, and AUF1 in the CME group were upregulated compared with those in the sham group （P 〈 0.01;P 〈 0.05;P 〈 0.05, respectively）. Conclusions AUF1, IRAK1 and TRAF6, but not miR-146a, could be involved, in myocardium inflammation following CME.展开更多
文摘[目的]探讨底板反应蛋白1(SPON1)介导波形蛋白(Vimentin)/上皮型钙粘素(E-cadherin)信号通路对于结直肠癌细胞转移的影响。[方法]采集2021年4月-2022年7月手术的78例结直肠癌患者的癌组织及癌旁组织制作石蜡标本,免疫组化法检测其SPON1蛋白水平。随机将SW620细胞分为空白组、阴性对照组和SPON1敲低组,将阴性对照质粒、SPON1敲低质粒分别转入阴性对照组和SPON1敲低组的SW620细胞中,构建细胞模型,检测EMT相关蛋白Vimentin、E-cadherin蛋白表达。[结果]结直肠癌组织SPON1蛋白阳性表达率85.90%(67/78)高于癌旁组织16.67%(13/78),其SPON1蛋白高表达率84.62%(66/78)高于癌旁组织19.23%(15/78)。与空白组、阴性对照组的SW620细胞比较,SPON1敲低组的SW620细胞侵袭数量与迁移率降低(89.26±8.19 vs 89.26±8.19 vs 22.38±5.11/个;75.23%±6.28%vs 78.15%±11.29%vs 26.73%±3.16%);SPON1敲低组的SW620细胞中SPON1 mRNA、SPON1和Vimentin蛋白水平下降(P<0.05),E-cadherin蛋白水平增加(P<0.05)。[结论]SPON1在结肠癌中表达上调,敲低SPON1的表达能下调Vimentin表达,上调E-cadherin表达,抑制结肠癌细胞的转移。
基金supported by Guangxi Province Medical Technology Research and Development Project(Grant No.S201303_01)Youth Science Foundation of Guangxi Medical University(No.GXMUYSF201213)
文摘Background Coronary microembolization （CME） is characterized by distal microvascular occlusion. However, the inflammatory mechanisms and therapeutic targets of CME are largely unknown. Methods A total of 11 Guangxi Bama miniature swines were divided into two groups： sham （n = 5） and CME （n = 6）. Microspheres were injected into the left anterior descending artery of the CME group to make an animal model of CME. The expres- sions of microRNA-146a （miR-146a） and IRAK1, TRAF6, and AUF1 in the myocardium were detected by qPCR. Results In the CME group, microspheres, microinfarction, and inflammatory cell infiltration were found under an optical microscope. The expression levels of miR-146a were low in both groups. After CME, the expression levels of IRAK1, TRAF6, and AUF1 in the CME group were upregulated compared with those in the sham group （P 〈 0.01;P 〈 0.05;P 〈 0.05, respectively）. Conclusions AUF1, IRAK1 and TRAF6, but not miR-146a, could be involved, in myocardium inflammation following CME.
