title: Consistent chromosome 10 rearrangements in four newly established human hepatocellular carcinoma cell lines.
abstract: Cancer cell lines represent an invaluable resource for isolation of novel genes relevant to tumor pathogenesis and as in vitro models. In this study, we report on the successful establishment of four cell lines from hepatocellular carcinoma tissue. These cell lines, designated HKCI-1, HKCI-2, HKCI-3, and HKCI-4, have been growing continuously for more than 24 months and have been passaged more than 50 times. A comprehensive cytogenetic characterization on the primary tumors and the derived cell lines was achieved by the combined approach of spectral karyotyping and comparative genomic hybridization. Chromosomal imbalances from the primary tumors were also maintained in the cell lines and included gains of 1q, 6p, 7, 10p, 17q, and 20 and loss of 4q. Recurring translocations included t(X;11), t(1;10), t(4;16), i(5)(p10), t(7;21), t(8;17), t(9;22), i(10)(p10), t(14;20), t(16;22), and t(17;19). It was noteworthy that consistent chromosome 10 aberrations, in particular t(1;10)(q10;p10), were detected in all four cell lines. Furthermore, microsatellite analysis on primary tumor and derived cell lines indicated a common deleted region of 10q23-q26. The functional importance of chromosome 10 aberrations in relation to the pathogenesis of HCC is unknown; however, the high frequency with which such aberrations were maintained in the cell lines suggests proliferative advantages of 10q loss or 10p gain in the multistep development of hepatic neoplasia.
authors.affiliation: Department of Clinical Oncology, Sir Y.K. Pao Centre for Cancer, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, N. T., SAR Hong Kong, China.
authors.forename: Elizabeth
authors.initials: E
authors.lastname: Pang
authors.forename: Nathalie
authors.initials: N
authors.lastname: Wong
authors.forename: Paul B-S
authors.initials: PB
authors.lastname: Lai
authors.forename: Ka-Fai
authors.initials: KF
authors.lastname: To
authors.forename: Wan-Yee
authors.initials: WY
authors.lastname: Lau
authors.forename: Philip J
authors.initials: PJ
authors.lastname: Johnson
mesh_terms: D000368:Aged; D006528:Carcinoma, Hepatocellular / Q000235:genetics* / Q000473:pathology; D018929:Cell Culture Techniques; D002869:Chromosome Aberrations; D020223:Chromosome Painting; D002879:Chromosomes, Human, Pair 10 / Q000235:genetics*; D006801:Humans; D007621:Karyotyping; D008113:Liver Neoplasms / Q000235:genetics* / Q000473:pathology; D008297:Male; D018895:Microsatellite Repeats / Q000235:genetics; D008875:Middle Aged; D009693:Nucleic Acid Hybridization / Q000379:methods; D014407:Tumor Cells, Cultured / Q000473:pathology*