RRC ID 1534
Author Ghosh M, Koike N, Tsunoda S, Hirano T, Kaul S, Kashiwagi H, Kawamoto T, Ohkohchi N, Saijo K, Ohno T, Miwa M, Todoroki T.
Title Characterization and genetic analysis in the newly established human bile duct cancer cell lines.
Journal Int J Oncol
Abstract Bile duct carcinoma patients generally have a poor prognosis. Understanding this cancer at the biological, genetic, molecular, and cellular level in ways relevant to clinical management is essential for developing effective preventive and therapeutic regimens. However, the currently established bile duct cancer cell lines are still insufficient for the research required to attain such an improved understanding. The aim of this study was to establish and characterize human bile duct cancer cell lines. We examined the growth characteristics and colony-forming ability of the established cell lines in terms of their cell cycle parameters and expression of tumor markers (CEA, CA19-9, MUC-1 and c-kit) and oncogene (c-erbB2) by flow cytometry. Comparative genomic hybridization (CGH) was performed to detect changes in the gene copy numbers. Human origin of the cell lines was confirmed by chromosomal analysis. We have established 3 cell lines and designated them as TGBC-47, TGBC-51, and TBCN-6 and the population doubling times of the three cell lines were 28, 38 and 94 h, respectively. The cells maintained differentiation characteristics of the original tumors. Two cell lines formed colonies in the colony forming assays; all three-cell lines expressed CEA, CA19-9, MUC-1 and c-erbB2 and showed chromosomal aneuploidy. CGH analysis demonstrated gains in various chromosomal regions, including 1q, 5p, 6p, 7q and 8q in two cell lines, and the loss in 17p in three cell lines. These newly established cell lines might serve as useful models for studying the advanced molecular tumor biology of bile duct cancer. Furthermore, they may assist translational research in the development of new effective molecular targeting chemoradiotherapy regimens. These chromosomal aberrations and imbalances provide some starting points for the molecular analysis of genomic regions and genes involved in bile duct carcinogenesis.
Volume 26(2)
Pages 449-56
Published 2005-2-1
PMID 15645130
MeSH Bile Duct Neoplasms / genetics* Bile Duct Neoplasms / metabolism CA-19-9 Antigen / biosynthesis Carcinoembryonic Antigen / biosynthesis Cell Cycle Cell Line, Tumor Cell Proliferation Cell Separation Chromosomes / ultrastructure Flow Cytometry Humans Karyotyping Microscopy, Electron Microscopy, Phase-Contrast Mucin-1 / biosynthesis Nucleic Acid Hybridization Prognosis Radioimmunoassay Receptor, ErbB-2 / biosynthesis Time Factors
IF 3.899
Times Cited 7
Human and Animal Cells TGBC47TKB(RCB1262) TGBC51TKB(RCB1281) MDA-MB-453(RCB1192)