Malignant Transformation and Chromosome Change of Two Cell Lines from Syrian Hamster Embryonic Tissue in vitro

Publisher Website
Google Scholar
Abstract
After 10 mo. of continuous cultivation in vitro, 2 cell lines (HE3-2 and HE4-2 cell lines) of embryonic tissue origin from Syrian hamsters did not produce tumors upon subcutaneous implantation into the hosts. After 13 mo., the similar implantation resulted in the development of rapidly growing trane-plantable fibrosarcomas. The tumor-producing capacity of HE3-2 cell line was higher than that of HE4-2 line. The chromosomal analysis of HE3-2 cell line after 10 mo. culture in vitro showed hyperdiploid karyotypes ("B" karyotype) with modal value of 47, while that after 13 mo. showed the predominance of further altered karyotypes ("A" karyotype) with modal value of 45 to 46. The most population of HE4-2 cell line after 13 mo. in vitro contained "B" karyotypes and a minor part of it showed "A" karyotypes.
Keywords