Tumor cells having tumorigenic potential but lacking invasive/metastatic potential, method for preparing them and screening method for metastasis-related genes using the same

摘要

Tumor cells having tumorigenic potential but lacking invasive/metastatic potential are established by introducing an oncogene of the ras family into a BALB/c 3T3 A31-variant cell. A screening method for genes having the property of conferring invasive/metastatic potential is also provided, which comprises transfecting DNA derived from a tumor tissue obtained from the surface or inside of a mammal or derived from a tumor cell line into tumor cells having tumorigenic potential but lacking invasive/metastatic potential, isolating cells having acquired invasive/metastatic potential and extracting DNA therefrom.