[Studies on oncogene of nasopharyngeal carcinoma. I. Transforming activity of CNE-2 DNA in NIH3T3 cells].

We have obtained foci of transformed NIH3T3 cells through transfection of human DNA from CNE-2 (an undifferentiated epithelial cell line of nasopharyngeal carcinoma). The DNA from primary foci can be used in subsequent cycles of transfection, resulting in secondary foci capable of forming clones on soft agar and producing tumors 30 days after innoculation into nude mice. The tumors were later proved histologically to be fibrosarcomas.