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  • Title: Improved interpretation of complex chromosomal rearrangements by combined GTG banding and in situ suppression hybridization using chromosome-specific libraries and cosmid probes.
    Author: Smit VT, Wessels JW, Mollevanger P, Dauwerse JG, van Vliet M, Beverstock GC, Breuning MH, Devilee P, Raap AK, Cornelisse CJ.
    Journal: Genes Chromosomes Cancer; 1991 Jul; 3(4):239-48. PubMed ID: 1958589.
    Abstract:
    Chromosome aberrations of a hypodiploid ovarian carcinoma cell line (modal chromosome number 38) having a complex karyotype were analyzed using biotinylated DNA library probes that specifically hybridize to chromosomes 3, 6, 7, 8, 11, 13, and 16 from telomere (pter) to telomere (qter). A series of cosmid probes localized to the short arm of chromosome 16 were used to further investigate one of the two aberrant chromosomes 16 present in this cell line. The competitive in situ suppression (CISS) hybridization of DNA-libraries was mostly performed subsequent to GTG-banding of the same metaphase cell in order to interpret the hybridization signals optimally. This combined approach made it possible to detect the origin of chromosomal material that could not be identified using GTG-banding. Furthermore, the in situ hybridization techniques appeared to be helpful in the characterization of complex translocations and for accurate breakpoint determination.
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