缺氧对乳腺癌细胞侵袭和迁移能力影响的研究  被引量:2

Hypoxia can induce EMT and promote invasion of breast cancer cells

在线阅读下载全文

作  者:蒋富强[1] 温居一[1] 康静波[1] 聂青[1] 

机构地区:[1]解放军海军总医院放射肿瘤科,北京100048

出  处:《肿瘤研究与临床》2012年第4期217-219,共3页Cancer Research and Clinic

摘  要:目的探讨缺氧对人类乳腺癌细胞MCF-7上皮-间质转化(’EMT)标志分子E-钙黏着素(E—cadherin)、波型蛋白(Vimentin)及侵袭迁移能力的影响,揭示缺氧引起乳腺癌侵袭转移的机制,为临床治疗乳腺癌提供实验及理论依据。方法采用Westernblot检测低氧诱导因子-1α(HIF-1α)、E-cadherin、Vimentin的变化;四甲基偶氮唑蓝(MTT)法检测缺氧对人类乳腺癌细胞MCF-7黏附能力的影响;Transwell侵袭小室法检测缺氧对MCF-7细胞侵袭和迁移能力的影响。结果随着缺氧时间的延长,人类乳腺癌细胞中E。cadherin表达明显降低(0.09±0.02)(t=30.98,p_-0.0007),Vimentin表达明显升高(0.69±0.04)(t=915,P=0.0000);缺氧72h组MCF.7细胞黏附(81.23±0.74)(t=82.05,P=0.000)、侵袭(120±6)(t=22.78,P=0.0009)和迁移能力明显增强(190±6)(t=23.49,P=0.000)。结论缺氧能下调E—cadherin、上调Vimentin而引起EMT的发生,促进MCF-7细胞黏附、侵袭和迁移。Objective To study the effect of hypoxia on EMT molecule E-cadherin, Vimentin and invasion of human breast cancer MCF-7 cells, reveal the mechanism of breast cancer invasion and metastasis and provide experimental and theoretical basis. Methods Western blot was used to observe the change of HIF-1α, E-cadherin and Vimentin during hypoxia on MCF-7. MTT was used to study the effects of viability. Transwell chamber was used to detect the ability of invasion and metastasis. Results The expression of E-cadherin was significantly lower (0.09±0.02) (t=30.98 ,P=0.0007) and the expression of Vimentin was significantly higher (0.69±0.04) (t=915,P=0.0000) with the extension of hypoxia. The capability of adhesion (81.23±0.74) (t=82.05,P=0.000), invasion(120±6) (t=-22.78,P=0.0009) and migration(190±6) (t=23.49,P=-0.000) was significantly increased after 72 h hypoxia(P〈0.05). Conclusion Hypoxia can downregulate E-cadherin and upregulate Vimentin and enhance the adhesion, invasion and migration of MCF-7.

关 键 词:乳腺肿瘤 缺氧 上皮 间质细胞 肿瘤浸润 细胞迁移 

分 类 号:R737.9[医药卫生—肿瘤]

 

参考文献:

正在载入数据...

 

二级参考文献:

正在载入数据...

 

耦合文献:

正在载入数据...

 

引证文献:

正在载入数据...

 

二级引证文献:

正在载入数据...

 

同被引文献:

正在载入数据...

 

相关期刊文献:

正在载入数据...

相关的主题
相关的作者对象
相关的机构对象