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  • Title: Characterization of rearrangements involving 4q, 13q and 16q in hepatocellular carcinoma cell lines using region-specific multiplex-FISH probes.
    Author: Tjia WM, Hu L, Zhang MY, Guan XY.
    Journal: Cancer Lett; 2007 May 18; 250(1):92-9. PubMed ID: 17098359.
    Abstract:
    Deletions in 4q, 13q and 16q were frequently detected in hepatocellular carcinoma (HCC) by comparative genomic hybridization (CGH) studies. However, detailed chromosome structural aberrations are not fully explored. Using CGH combined with multiplex-color FISH (M-FISH) with chromosome region-specific probes (CRPs), chromosome structural aberrations in 4q, 13q and 16q in six HCC cell lines were studied. All CRPs, which were generated from microdissected DNA, were specific, strong in intensity and sensitive enough to detect chromosome structural aberrations including translocation and deletion. FISH with BAC probes was used to further characterize translocation breakpoints and deletions. A breakpoint at 16q22 was localized at a BAC clone (RP11-341K23) and another breakpoint at 4q28 was localized within a 620 kb-region. A minimal deleted region at 13q21 was found between BAC clones RP11-240M20 and RP11-435P18. This study demonstrated that the combination of CGH, M-FISH and BAC-FISH is a very useful tool to detect and characterize translocation breakpoint.
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