中文摘要：

目的研究NANOG在宫颈癌中的表达及其在宫颈癌发生发展中的作用。方法用免疫组织化学检测正常宫颈、宫颈原位癌及宫颈癌中NANOG的表达;分别用原代宫颈癌肿瘤球细胞及肿瘤球分化细胞接种裸鼠,观察移植瘤的生长情况。结果与正常组织相比,宫颈原位癌及宫颈癌中NANOG基因的表达显著增强（P〈0.05）。新鲜宫颈癌组织经过无血清培养可以生成肿瘤球,再次经过血清培养后能够分化成上皮样细胞;裸鼠移植瘤实验证实这种肿瘤球细胞具有很高的成瘤性。结论宫颈癌组织中存在肿瘤干细胞,NANOG在介导宫颈癌的发生过程中起到重要作用。

英文摘要：

Objective To investigate the expression of NANOG gene in cervical cancer and its effect on the development of the cancer. Methods By using immunohistochemistry, NANOG expression levels were demonstrated in normal cervical tissues, cervical cancer in situ and cervical cancer tissues. Tumor sphere cells from cervical cancer tissue and their differentiated cells were injected into nude mice to observe the tumor growth. Results When compared with that of the normal cervical tissue, significantly higher NANOG protein expression level was found in cervical cancer and cervical cancer in situ （P〈0.05）. Tumor spheres were formed from the nonserum culture of cervical cancer tissue and the spheres could differentiate into epithelial-like cells. The sphere cells of cervical cancer caused tumor formation in nude mice. Conclusion The results suggest that cancer stem cells are present in cervical cancer and NANOG may play a crucial role in the development of cervical cancer.