Nasopharyngeal carcinoma (NPC), a common head and neck neoplasm in southern China,is mostly treated with radiotherapy, however, it can not be completely cured by ehemoradiotherapy. Recent investigation on NPC suggests that the nasopharyngeal carcinoma stem cells can be differentiated to heterogeneous cancer cells that have a strong ability for self renovation and further contribute to the development and progression of tumor itself which is closely related to drug resistance, recurrence and metastasis of NPC. Wnt/β-catenin, Notch, Hedgehog, NF...