title: Establishment of a novel human ovarian cancer cell line with high anchorage-independent growth ability.
abstract: The acquisition of anchorage-independence is an important hallmark of malignant transformation and is thought to be one of the critical factors in the metastasis and dissemination of cancer. We describe here the establishment and characterization of a novel human ovarian cancer cell line, TAC3, which has high anchorage-independent growth ability. This cell line has unique growth properties. Whereas TAC3 cells grew in an adherent manner on collagen-coated dishes, they grew in a non-adherent manner on plain culture dishes. Stable exponential growth was observed under both adherent and non-adherent conditions. Western blot analysis indicated that TAC3 had both strong expression of Bcl-2 and detachment-induced activation of extracellular signal-regulated kinase (ERK), and it was suggested that the detachment-induced proliferation signal would join the mitogen-activated protein kinase (MAPK) cascade at the level of MAPK/ERK kinase (MEK). Pharmacologic MEK inhibitor U0126 inhibited the growth of TAC3; it was more effective with non-adherent cells than with adherent cells. The TAC3 cell line may therefore be a useful tool for the investigation of the mechanisms of anchorage-independence and for the development of new treatment strategies, such as signal therapy, in human ovarian cancer.
authors: Department of Obstetrics and Gynecology, Fukui Medical University, Fukui 910-1193, Japan.
authors: Yukiko
authors: Y
authors: Nishikawa
authors: Yoshio
authors: Y
authors: Yoshida
authors: Kazumi
authors: K
authors: Kawahara
authors: Tetsuji
authors: T
authors: Kurokawa
authors: Kimihisa
authors: K
authors: Tajima
authors: Fumikazu
authors: F
authors: Kotsuji
mesh_terms: D000328:Adult; D000818:Animals; D015153:Blotting, Western; D002448:Cell Adhesion; D002455:Cell Division; D045744:Cell Line, Tumor; D002871:Chromosome Banding; D003094:Collagen / Q000378:metabolism; D004305:Dose-Response Relationship, Drug; D004791:Enzyme Inhibitors / Q000494:pharmacology; D005260:Female; D006801:Humans; D007621:Karyotyping; D020935:MAP Kinase Signaling System; D051379:Mice; D008807:Mice, Inbred BALB C; D008819:Mice, Nude; D009368:Neoplasm Transplantation; D010051:Ovarian Neoplasms / Q000473:pathology*; D019253:Proto-Oncogene Proteins c-bcl-2 / Q000378:metabolism; D013997:Time Factors; D018631:ras Proteins / Q000378:metabolism
chemical_list: D004791:Enzyme Inhibitors; D019253:Proto-Oncogene Proteins c-bcl-2; D003094:Collagen; D018631:ras Proteins