PMID: 11921276Mar 29, 2002Paper

Comprehensive karyotyping of the HT-29 colon adenocarcinoma cell line

Genes, Chromosomes & Cancer
Kanji KawaiSteve Goodison

Abstract

The tumor cell line HT-29 was derived from a primary adenocarcinoma of the rectosigmoid colon. HT-29 is hypertriploid (3n+) and has accumulated numerous chromosomal structural aberrations. To identify material involved in chromosome rearrangements, we performed a comprehensive cytogenetic analysis using G-banding, spectral karyotyping (SKY), and fluorescence in situ hybridization (FISH). The combination of molecular cytogenetic techniques enabled us to define the first comprehensive karyotype for HT-29. Seventeen marker chromosomes were found in 75-100% of metaphase cells, generally in a single copy per cell. We confirmed the composition of eight previously described markers, refined the classification of seven others, and identified two novel marker chromosomes. Notable aberrations included a reciprocal translocation between chromosomes 6 and 14 and an unusual, large derivative chromosome 8 composed entirely of 8q material. The telomere status, evaluated by FISH, revealed telomeric signals at the termini of all chromosomes. No interstitial telomeric sequences were observed in any cell. Although numerous chromosomal aberrations are present in HT-29, the cell line appears to have retained a high level of genomic stability during...Continue Reading

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Mar 6, 2008·Chromosome Research : an International Journal on the Molecular, Supramolecular and Evolutionary Aspects of Chromosome Biology·Eva BártováStanislav Kozubek
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