New cell line derived from a human chondrosarcoma

Sensitivity of human oral tumor cells to human adenovirus

Human cells in early passage cultures of benign oral tumors, normal oral tissues, normal lung tissues and, especially, in long-term established oral carcinoma cultures were highly susceptible to infection by human adenovirus types 5, 21, and 31. In contrast, replication of each adenovirus type was markedly limited in inoculated cells of newly-established oral squamous cell carcinoma cultures.

Establishment of a new human chondrosarcomatous cell line

A new cultured cell line (HuOS) was established from tumor cells obtained from the pulmonary metastatic foci of a patient diagnosed as chondroblastic osteosarcoma. The tumor cell line was maintained for over 19 months, and morphological and biological characteristics were studied. These cells retained their malignant properties and produced nodules when transferred intramuscularly to nude mice. Morphologically, these nodules revealed a chondromatous pattern.

A new cell line from a human chondrosarcoma

Morphological and growth characteristics are described of a rapidly growing cell line with epithelioid and giant-cell characteristics derived from a chondrosarcoma in a male patient 65 years of age. This cell line is of considerable interest because in these cells cross-reacting antigens with known animal oncorna-viruses are present. Biochemically, the cells contain particles with a density of 1-16 with "cores" of density 1'23 associated with a reverse-transcriptase-like enzyme and with 70S RNA. Occasionally, virus-like particles were demonstrated by electron microscope in material derived from the culture medium.