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HIF-1α-Snail轴介导不同氧环境下结肠癌EMT-MET转化 被引量:4
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作者 雷星 陈熹 +1 位作者 张迪 单涛 《安徽医科大学学报》 CAS 北大核心 2019年第6期908-912,共5页
目的结肠癌乏氧微环境可促进肿瘤EMT(上皮-间质化)发生,而肿瘤归巢新环境相对富氧环境可介导MET(间质上皮化)过程,本研究旨在探讨肿瘤的转移EMT-MET二阶段过程的具体机制。方法利用不同氧浓度培养箱培养结肠癌细胞系 COLO 205,实验分三... 目的结肠癌乏氧微环境可促进肿瘤EMT(上皮-间质化)发生,而肿瘤归巢新环境相对富氧环境可介导MET(间质上皮化)过程,本研究旨在探讨肿瘤的转移EMT-MET二阶段过程的具体机制。方法利用不同氧浓度培养箱培养结肠癌细胞系 COLO 205,实验分三组[低氧组(氧浓度5%);常氧组(氧浓度21%);适度高氧组(氧浓度30%)],RT-PCR及Western blot检测细胞中Snail、HIF-1α mRNA及蛋白表达量。利用HIF-1α特异性阻断剂抑制HIF-1α信号通路后检测EMT指标E-cadherin、vimentin变化及Snail表达。结果 PCR及Western blot结果显示,低氧组癌细胞HIF-1α mRNA及蛋白表达量均上升( P <0.05)。用HIF-1α特异性阻断剂抑制HIF-1α信号通路后EMT指标E-cadherin/vimentin表达下降( P <0.05)。结论氧浓度差异介导EMT-MET过程的关键机制可能与HIF-1α-Snail信号通路作用有关。 展开更多
关键词 HIF-1Α SNAIL 表皮间质化 表皮 结肠癌
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Epigenetic and metabolic regulation of breast cancer stem cells
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作者 Hui-xin LIU Xiao-li LI Chen-fang DONG 《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》 SCIE CAS CSCD 2015年第1期10-17,共8页
Breast cancer has a relatively high mortality rate in women due to recurrence and metastasis. Increasing evidence has identified a rare population of cells with stem cell-like properties in breast cancer. These cells,... Breast cancer has a relatively high mortality rate in women due to recurrence and metastasis. Increasing evidence has identified a rare population of cells with stem cell-like properties in breast cancer. These cells, termed cancer stem cells (CSCs), which have the capacity for self-renewal and differentiation, contribute significantly to tumor progression, recurrence, drug resistance and metastasis. Clarifying the mechanisms regulating breast CSCs has important implications for our understanding of breast cancer progression and therapeutics. A strong connection has been found between breast CSCs and epithelial mesenchymal transition (EMT). In addition, recent studies suggest that the maintenance of the breast CSC phenotype is associated with epigenetic and metabolic regulation. In this review, we focus on recent discoveries about the connection between EMT and CSC, and advances made in under- standing the roles and mechanisms of epigenetic and metabolic reprogramming in controlling breast CSC properties. 展开更多
关键词 Cancer stem cells (CSCs) Epithelial mesenchymal transition (EMT) Epigenetic modification Metabolicreprogramming Breast cancer
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