title: [A model of nasopharyngeal carcinoma with spontaneous highly lymphatic metastasis in nude mice and its biological characteristics].
abstract: OBJECTIVE
  To establish a model of nasopharyngeal carcinoma with spontaneous highly lymphatic metastasis in nude mice and to study its biological characteristics.
  
  
  METHODS
  The clone cells of nasopharyngeal carcinoma(NPC), CNE-2Z-H5, were inoculated into nude mice. The cancer cells of lymph node metastatic foci were transplanted into nude mice again when the metastasis of nude mice were observed. After repetition of this procedure for 9 cycles, the metastatic rate and the metastatic paths were observed in nude mice of every passage; The changes were also observed in proliferation ability, expression of growth factor and its receptor in vitro, proliferation index(PI), and tumor weight and doubling time of the transplantable tumor in every passage in vivo.
  
  
  RESULTS
  The lymphatic metastatic rates were higher than 85%. The metastatic paths were single, the proliferation ability was increased in cancer cells of every passage in vivo and vitro after passaging cancer cells of lymphatic metastatic foci for 9 cycles in nude mice.
  
  
  CONCLUSIONS
  A model of nasopharyngeal carcinoma with spontaneous highly lymphatic metastasis has been established in nude mice, and the possibilities of metastasis and proliferation are increased after progression of NPC cells in nude mice. There is a close relationship between the metastasis and proliferation in NPC.
authors.affiliation: Department of Pathology, Guangdong Medical College, Zhanjiang.
authors.forename: J
authors.initials: J
authors.lastname: Huang
authors.forename: W
authors.initials: W
authors.lastname: Tang
authors.forename: Y
authors.initials: Y
authors.lastname: Yao
mesh_terms: D000818:Animals; D004195:Disease Models, Animal; D005260:Female; D008207:Lymphatic Metastasis; D008297:Male; D051379:Mice; D008819:Mice, Nude; D009303:Nasopharyngeal Neoplasms / Q000473:pathology*; D009368:Neoplasm Transplantation