筛选并初步分析不同 HER-2水平的人乳腺癌 BT474细胞内miRNAs差异性表达

摘要

目的：检测两株人乳腺癌细胞BT474和BT474/siRNA HER-2微小RNA( miRNAs)的表达,初步筛选与HER-2相关差异性表达的miRNAs。方法用干扰RNA技术沉默人乳腺癌细胞株BT474中HER-2基因的表达,利用miRNA芯片技术比较两株细胞BT474和BT474/siRNA HER-2内miRNAs的表达。结果差异倍数>2且P2. 0 and P value<0. 05, there were 338 miRNAs related to HER-2, including 110 up-regu-lated and 228 down-regulated miRNAs. Conclusion miRNA microarrays can detect the differentially expressed miRNAs in human breast cancer BT474 cells with different level of HER-2. The miRNAs related to HER-2 which play a role in breast cancer should be found after further analysis.