title: Metastatic behavior and tumorigenicity of a human melanoma cell line (MM-RU) after injection into nude mice.
abstract: The ability of the human amelanotic melanoma cell line MM-RU to produce experimental metastases and to grow tumors at subcutaneous inoculation sites in 4-week-old nude mice was examined. After i.v. inoculation of 10(6) cells, all injected mice (n = 21) developed consistent numbers of metastatic pulmonary colonies within 32 days. The coefficients of variation for the number of colonies were between 17%-23% in three independent experiments. Survival time after i.v. inoculation was 63 +/- 7 days (mean +/- SD) (n = 20). Within 20 days, subcutaneous inoculation of 5 x 10(6) cells resulted in tumor growths of 13 +/- 3 mm (mean +/- SD) at the inoculation sites in all nude mice (n = 12). The MM-RU cell line seems to be a simple, fast vehicle for testing the effect of melanoma growth modulators on experimental pulmonary metastases as well as on subcutaneously growing melanoma.
authors.affiliation: Department of Dermatology, Faculty of Medicine, University of Tokyo, Japan.
authors.forename: I M
authors.initials: IM
authors.lastname: Stender
authors.forename: T
authors.initials: T
authors.lastname: Etoh
authors.forename: T
authors.initials: T
authors.lastname: Tsuchida
authors.forename: H
authors.initials: H
authors.lastname: Nakagawa
authors.forename: H R
authors.initials: HR
authors.lastname: Byers
authors.forename: G
authors.initials: G
authors.lastname: Imokawa
authors.forename: Y
authors.initials: Y
authors.lastname: Ishibashi
mesh_terms: D000818:Animals; D005260:Female; D005732:Gangliosides / Q000032:analysis; D006801:Humans; D008175:Lung Neoplasms / Q000556:secondary; D008546:Melanoma, Experimental / Q000737:chemistry / Q000473:pathology / Q000556:secondary*; D051379:Mice; D008807:Mice, Inbred BALB C; D008819:Mice, Nude; D009368:Neoplasm Transplantation; D014407:Tumor Cells, Cultured
chemical_list: D005732:Gangliosides