Introduction:Structural maintenance of chromosome 1A(SMC1A)is a crucial compound of the cohesin complex.It has been reported to regulate the epithelial-mesenchymal transition(EMT)process in multiple cancers.Objectives...Introduction:Structural maintenance of chromosome 1A(SMC1A)is a crucial compound of the cohesin complex.It has been reported to regulate the epithelial-mesenchymal transition(EMT)process in multiple cancers.Objectives:The present study aims to further clarify the role of SMC1A in cervical cancer.Methods:We analyzed data from four datasets and confirmed that SMC1A showed high expression in cervical cancer samples and was related to poor prognosis of patients with cervical cancer.Cell proliferation of SiHa and C-33A with knockdown of SMC1A was assessed using CCK-8 and colony formation assay.The migration and invasion were estimated by wound healing assay and Transwell assay separately.The effect of SMC1A on the chemosensitivity of cisplatin and paclitaxel in cervical cancer cells was detected by flow cytometry assay.Results:Results of the immunohistochemistry(IHC)assay confirmed that the expression of SMC1A was increased in tumor tissues.The cell viability was remarkably suppressed in SiHa and C-33A by knocking down the expression of SMC1A.The increase of E-cadherin expression and decrease of N-cadherin and Snail expression verified that inhibition of SMC1A suppressed the EMT process of cervical cancer cells.Further,cell migration,and invasion were significantly repressed by the absence of SMC1A.Cisplatin and paclitaxel are effective chemotherapeutic agents used in the treatment of cervical cancer.Silencing of SMC1A remarkably promoted the apoptosis induced by cisplatin and paclitaxel,revealing that the chemotherapy resistance to cisplatin and paclitaxel in cervical cancer could reduce by knocking down SMC1A.Further,metastasis associated with colon cancer 1(MACC1)was identified as the downstream factor of SMC1A.Its upregulation reversed the proliferation and the EMT process induced by SMC1A silencing.Conclusion:Therefore,our study concluded that SMC1A serves as a therapeutic molecular target to regulate the malignant phenotypes of cervical cancer.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)在鼻咽癌中的表达与其临床病理特征和预后之间的关系。方法:采用免疫组化法检测130例鼻咽癌组织中MACC1蛋白的表达情况,分析MACC1蛋白在鼻咽癌组织的表达...目的:探讨结肠癌转移相关基因1(metastasis-associated in colon cancer-1,MACC1)在鼻咽癌中的表达与其临床病理特征和预后之间的关系。方法:采用免疫组化法检测130例鼻咽癌组织中MACC1蛋白的表达情况,分析MACC1蛋白在鼻咽癌组织的表达与临床病理特征及预后的关系。结果:MACC1在鼻咽癌组织中阳性表达率为68.5%,MACC1蛋白的表达与鼻咽癌的T分期、淋巴结转移和临床分期有关(P<0.05)。Kaplan-Meier生存曲线显示MACC1表达阳性的鼻咽癌患者5年总生存率(45.9%)明显低于MACC1表达阴性患者(73.7%)(P<0.05),Cox多因素分析显示MACC1蛋白是影响鼻咽癌预后的独立危险因素(P<0.05)。结论:MACC1蛋白在鼻咽癌中的高表达与鼻咽癌的浸润和转移密切相关,是鼻咽癌独立预后危险因素,有望成为鼻咽癌基因治疗的新靶点。展开更多
目的:探讨MACC1(metastasis-associated in colon cancer l)基因特异性siRNA(small interfering RNA)对肺癌细胞系SBC-5体外增殖和迁移的影响。方法:化学合成MACC1基因特异性siRNA,阳离子脂质体LipofectamineTM 2000转染肺癌细胞系SBC-...目的:探讨MACC1(metastasis-associated in colon cancer l)基因特异性siRNA(small interfering RNA)对肺癌细胞系SBC-5体外增殖和迁移的影响。方法:化学合成MACC1基因特异性siRNA,阳离子脂质体LipofectamineTM 2000转染肺癌细胞系SBC-5细胞,RT-PCR和Western blot方法检测转染后SBC-5细胞中MACC1基因和蛋白的表达情况;MTT法检测细胞的生长增殖状况;划痕试验观察细胞迁移能力的改变。结果:MACC1基因特异性siRNA转染细胞后,SBC-5细胞MACC1的mRNA和蛋白表达水平明显降低,MTT试验和划痕试验观察到转染MACC1-siRNA的SBC-5细胞增殖、迁移能力明显减弱。结论:MACC1基因特异性siRNA可以明显抑制肺癌SBC-5细胞增殖和迁移,MACC1可能成为肺癌治疗的新靶点。展开更多
文摘Introduction:Structural maintenance of chromosome 1A(SMC1A)is a crucial compound of the cohesin complex.It has been reported to regulate the epithelial-mesenchymal transition(EMT)process in multiple cancers.Objectives:The present study aims to further clarify the role of SMC1A in cervical cancer.Methods:We analyzed data from four datasets and confirmed that SMC1A showed high expression in cervical cancer samples and was related to poor prognosis of patients with cervical cancer.Cell proliferation of SiHa and C-33A with knockdown of SMC1A was assessed using CCK-8 and colony formation assay.The migration and invasion were estimated by wound healing assay and Transwell assay separately.The effect of SMC1A on the chemosensitivity of cisplatin and paclitaxel in cervical cancer cells was detected by flow cytometry assay.Results:Results of the immunohistochemistry(IHC)assay confirmed that the expression of SMC1A was increased in tumor tissues.The cell viability was remarkably suppressed in SiHa and C-33A by knocking down the expression of SMC1A.The increase of E-cadherin expression and decrease of N-cadherin and Snail expression verified that inhibition of SMC1A suppressed the EMT process of cervical cancer cells.Further,cell migration,and invasion were significantly repressed by the absence of SMC1A.Cisplatin and paclitaxel are effective chemotherapeutic agents used in the treatment of cervical cancer.Silencing of SMC1A remarkably promoted the apoptosis induced by cisplatin and paclitaxel,revealing that the chemotherapy resistance to cisplatin and paclitaxel in cervical cancer could reduce by knocking down SMC1A.Further,metastasis associated with colon cancer 1(MACC1)was identified as the downstream factor of SMC1A.Its upregulation reversed the proliferation and the EMT process induced by SMC1A silencing.Conclusion:Therefore,our study concluded that SMC1A serves as a therapeutic molecular target to regulate the malignant phenotypes of cervical cancer.
文摘目的:探讨结肠癌转移相关基因1(metastasis-associated in colon cancer-1,MACC1)在鼻咽癌中的表达与其临床病理特征和预后之间的关系。方法:采用免疫组化法检测130例鼻咽癌组织中MACC1蛋白的表达情况,分析MACC1蛋白在鼻咽癌组织的表达与临床病理特征及预后的关系。结果:MACC1在鼻咽癌组织中阳性表达率为68.5%,MACC1蛋白的表达与鼻咽癌的T分期、淋巴结转移和临床分期有关(P<0.05)。Kaplan-Meier生存曲线显示MACC1表达阳性的鼻咽癌患者5年总生存率(45.9%)明显低于MACC1表达阴性患者(73.7%)(P<0.05),Cox多因素分析显示MACC1蛋白是影响鼻咽癌预后的独立危险因素(P<0.05)。结论:MACC1蛋白在鼻咽癌中的高表达与鼻咽癌的浸润和转移密切相关,是鼻咽癌独立预后危险因素,有望成为鼻咽癌基因治疗的新靶点。
文摘目的:探讨MACC1(metastasis-associated in colon cancer l)基因特异性siRNA(small interfering RNA)对肺癌细胞系SBC-5体外增殖和迁移的影响。方法:化学合成MACC1基因特异性siRNA,阳离子脂质体LipofectamineTM 2000转染肺癌细胞系SBC-5细胞,RT-PCR和Western blot方法检测转染后SBC-5细胞中MACC1基因和蛋白的表达情况;MTT法检测细胞的生长增殖状况;划痕试验观察细胞迁移能力的改变。结果:MACC1基因特异性siRNA转染细胞后,SBC-5细胞MACC1的mRNA和蛋白表达水平明显降低,MTT试验和划痕试验观察到转染MACC1-siRNA的SBC-5细胞增殖、迁移能力明显减弱。结论:MACC1基因特异性siRNA可以明显抑制肺癌SBC-5细胞增殖和迁移,MACC1可能成为肺癌治疗的新靶点。
