乳腺癌肿大腋窝淋巴结中BCSCs相关基因表达与肿瘤复发、转移的关系

摘要

目的：探索乳腺癌干细胞（BCSCs）相关基因CD44、Twist1、OCT4在乳腺癌患者癌组织、腋窝肿大淋巴结中的表达与乳腺癌转移及复发的关系。方法以免疫组化法和组织免疫荧光聚合酶链反应（RT-PCR）分别检测乳腺癌患者癌组织、腋窝淋巴结中BCSCs相关因子CD44、CD24、Twist1和OCT4的基因和抗原表达。结果在术前和术中确诊为乳腺癌的14例患者中均有癌细胞腋窝淋巴结转移。免疫组化法测得乳腺癌癌组织、腋窝肿大淋巴结BCSCs相关因子CD44、Twist1和OCT4抗原阳性过表达，而CD24呈低表达；RT-PCR检测乳腺癌组织、腋窝淋巴结中BCSCs相关因子CD44、Twist1和OCT4的基因表达增强（P＜0.05），CD24基因低表达（P＞0.05）。结论乳腺癌伴腋窝淋巴结肿大者BCSCs相关因子CD44、Twist1和OCT4的基因、抗原表达明显增高，可能表明BCSCs相关因子与乳腺癌细胞易早期转移、复发有关。%Objective To explore the relation between the expression of breast cancer stem cells(BCSCs) related gene CD44 , OCT4 and Twist1 in breast cancer tissues and swelling axillary lymph nodes with the recurrence and metastasis of breast cancer . Methods The genes and antigen expressions of BCSCs relative factors CD44 ,CD24 ,OCT4 and Twist1 in th breast cancer tissue and axillary lymph nodes were detected by the immunohistochemical method and RT‐PCR .Results Totally 14 cases of preopera‐tively and intraoperatively diagnosed breast cancer had axillary lymph nodes metastasis of cancer cells .The over expression of BC‐SCs relative factors CD44 ,OCT4 and Twist1 antigen positive in the breast cancer tissue and axillary lymph nodes were detected by the immunohistochemical method ,while CD24 was lowly expressed;the gene expressions of BCSCs relative factors CD44 ,OCT4 and Twist1 in the breast cancer tissue and axillary lymph nodes were enhanced by the RT‐PCR detection (P<0 .05) ,while CD24 gene was lowly expressed(P>0 .05) .Conclusion The genes and antigen expression of BCSCs related factors CD44 ,OCT4 and Twist1 in the patients with breast cancer complicating swelling axillary lymph nodes are significantly increased ,which might indicate that the BCSCs related factors are related with easily early metastasis and recurrence of breast cancer cells .