[Establishment of double grafted tumor model in mice and role of "tumor necrosis factor" (TNF)].
A double grafted tumor model (colon 26 and Meth-A) was established in BALB/c mice. The primary colon 26 tumor growth was inhibited by the secondary transplantation of Meth-A tumor cells into the same host, and the prolongation of mean survival time was also observed. To investigate the mechanism of the prolongation of survival, the role of tumor necrosis factor (TNF) was examined. The intraperitoneal inoculation of human TNF-alpha (1 x 10(4) units) for 5 days, as well as the secondary Meth-A tumor cell transplantation, resulted in the prolongation of survival. Moreover, the prolongation of survival disappeared by the inoculation of rabbit anti-TNF-alpha antibodies. These results suggest that TNF-alpha play an important role in the mechanism of a prolongation of survival by the secondary transplantation of the tumor cells.
Kita
M
M
Département de Microbiologie, Université Médicale de la Préfecture de Kyoto, Japon.
Sakata
K
K
Imanishi
J
J
D000818:Animals; D003110:Colonic Neoplasms / Q000276:immunology* / Q000401:mortality; D005260:Female; D005354:Fibrosarcoma / Q000276:immunology* / Q000401:mortality; D051379:Mice; D008807:Mice, Inbred BALB C; D009368:Neoplasm Transplantation; D015996:Survival Rate; D014181:Transplantation Immunology; D014409:Tumor Necrosis Factor-alpha / Q000276:immunology*
D014409:Tumor Necrosis Factor-alpha
Etablissement d'un modèle de tumeur greffée en double chez la Souris et rôle du "Tumor Necrosis Factor" (TNF).