title: A nude mouse model of human osteosarcoma lung metastases for evaluating new therapeutic strategies.
abstract: The purpose of these studies was to develop a metastatic osteosarcoma nude mouse model to evaluate the in vivo efficacy of new therapeutic compounds. Human SAOS-2 osteosarcoma cells (10(6) cells) were injected i.v. into nude mice. Cells isolated from a rare pulmonary metastases 6 months later were established (SAOS-LM1) in culture and re-injected. This procedure was repeated 5 additional times to produce the SAOS-LM6 cell line. Visible pulmonary nodules were present 8 weeks following i.v. injection of 10(6) SAOS-LM6 cells as compared to 17 weeks using SAOS-LM2 cells. Microscopic SAOS-LM6 pulmonary metastases were demonstrated at 6 weeks. Administration of adriamycin on week 9 resulted in regression of macroscopic SAOS-LM6 lung tumors. The ability of the model to be used to evaluate the effectiveness of a biologic agent against microscopic disease was also verified. It was concluded that this model can assess therapeutic efficacy and therefore, may have a role in investigating the potential of novel approaches aimed at eliminating pulmonary metastatic osteosarcoma.
authors.affiliation: Department of Cancer Biology, The University of Texas M. D. Anderson Cancer Center, Houston 77030, USA.
authors.forename: S F
authors.initials: SF
authors.lastname: Jia
authors.forename: L L
authors.initials: LL
authors.lastname: Worth
authors.forename: E S
authors.initials: ES
authors.lastname: Kleinerman
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000627:therapeutic use; D016207:Cytokines / Q000627:therapeutic use; D004195:Disease Models, Animal; D004317:Doxorubicin / Q000627:therapeutic use; D004354:Drug Screening Assays, Antitumor; D005047:Etoposide / Q000627:therapeutic use; D006801:Humans; D008175:Lung Neoplasms / Q000188:drug therapy* / Q000556:secondary; D051379:Mice; D008819:Mice, Nude; D009368:Neoplasm Transplantation; D012516:Osteosarcoma / Q000473:pathology*; D014747:Vinblastine / Q000627:therapeutic use
chemical_list: D000970:Antineoplastic Agents; D016207:Cytokines; D014747:Vinblastine; D005047:Etoposide; D004317:Doxorubicin