title: Biological properties and gene expression associated with metastatic potential of human osteosarcoma.
abstract: Lung metastasis has a great influence on the prognosis of patients with osteosarcoma. We previously established two high-metastatic sublines, M112 and M132, from the HuO9 human osteosarcoma cell line by in vivo selection. In this study, we newly isolated a high-metastatic subline, H3, and three low-metastatic sublines, L6, L12 and L13, from HuO9 by the dilution plating method. Three high-metastatic sublines produced more than 200 metastatic nodules in the lung, while three low-metastatic sublines produced no or few nodules after injection of 2 x 10(6) cells into the tail vein of nude mice. There were significant differences in the motility and invasiveness between high- and low-metastatic sublines, whereas the growth rates in vitro and the tumorigenicity in vivo showed no correlation with their metastatic abilities. Early adherence to culture plates was significantly lower in two of three low-metastatic sublines, which occupied smaller surface areas on the culture plates than other sublines did. Comparison of the expression of 637 cancer-related genes by cDNA microarray revealed that seven genes were differentially expressed between high- and low-metastatic sublines. Among them, five genes (AXL, TGFA, COLL7A1, WNT5A, and MKK6) were associated with adherence, motility, and/or invasiveness. These results suggest that the differences in motility/invasiveness and adhesive abilities are key determinants of lung metastasis in osteosarcoma.
authors.affiliation: Division of Biology, National Cancer Center Research Institute, Tokyo, Japan.
authors.forename: Tetsuhiro
authors.initials: T
authors.lastname: Nakano
authors.forename: Masachika
authors.initials: M
authors.lastname: Tani
authors.forename: Yasunori
authors.initials: Y
authors.lastname: Ishibashi
authors.forename: Kenji
authors.initials: K
authors.lastname: Kimura
authors.forename: Yong-Bum
authors.initials: YB
authors.lastname: Park
authors.forename: Natsuko
authors.initials: N
authors.lastname: Imaizumi
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Tsuda
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Aoyagi
authors.forename: Hiroki
authors.initials: H
authors.lastname: Sasaki
authors.forename: Susumu
authors.initials: S
authors.lastname: Ohwada
authors.forename: Jun
authors.initials: J
authors.lastname: Yokota
mesh_terms: D000818:Animals; D001859:Bone Neoplasms / Q000235:genetics* / Q000473:pathology*; D002448:Cell Adhesion; D002465:Cell Movement; D005260:Female; D015870:Gene Expression; D006801:Humans; D008175:Lung Neoplasms / Q000556:secondary*; D051379:Mice; D008819:Mice, Nude; D009361:Neoplasm Invasiveness; D009368:Neoplasm Transplantation; D020411:Oligonucleotide Array Sequence Analysis; D012516:Osteosarcoma / Q000235:genetics* / Q000556:secondary*; D014407:Tumor Cells, Cultured