Growth of Tumor Cells with Different Sensitivities for Murine Natural Killer Cells in Young and Adult Athymic Nude Mice
- 1 January 1985
- journal article
- research article
- Published by S. Karger AG in Pathobiology
- Vol. 53 (1), 24-31
- https://doi.org/10.1159/000163292
Abstract
Of four tumor cell lines, the murine YAC lymphoma, the human K562 lymphoma, and the human prostatic carcinomas PC3 and PC93, the susceptibility to murine natural killer (NK) cells as well as the tumorigenicity in young (3.5–4 weeks old) and in adult (8–10 weeks old) nude mice were studied. In young nude mice, which exhibited a lower level of NK cell activity than adult nude mice, the formation of solid tumors after inoculation of tumor cell suspensions occurred more frequently and with a shorter time lag than in adult animals. These effects were observed not only with the NK-sensitive YAC cells, but also with the relatively NK-insensitive PC3 and PC93 cells, indicating that also factors other than NK cell susceptibility may influence the growth of tumor cells in nude mice. Therefore, the use of young nude mice may enhance the rate of success of heterotransplantation of human tumors, regardless of the NK cell susceptibility of the tumor cells.Keywords
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