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  • Title: Genomic alterations in lung adenocarcinomas detected by multicolor fluorescence in situ hybridization and comparative genomic hybridization.
    Author: Shen H, Zhu Y, Wu YJ, Qiu HR, Shu YQ.
    Journal: Cancer Genet Cytogenet; 2008 Mar; 181(2):100-7. PubMed ID: 18295661.
    Abstract:
    We used two molecular cytogenetic techniques, multicolor fluorescence in situ hybridization (M-FISH) and comparative genomic hybridization (CGH), to analyze three established lung adenocarcinoma cell lines (A549, H1650, and SPC-A-1) and primary lung adenocarcinoma samples, to identify common chromosomal aberrations. M-FISH revealed numerous complex chromosomal rearrangements. Chromosomes 5, 6, 11, 12, and 17 were most frequently involved in interchromosomal translocations. CGH revealed regions on 1q, 2p, 3q, 5p, 5q, 7p, 8q, 11q, 12q, 14q, 16p, 17p, 19q, 20q, 21q, and 22q to be commonly overrepresented and regions on 2q, 3p, 4p, 5q, 7q, 8p, 9p, 13q, 14q, and 17p to be underrepresented. The most common gains were found in 16p13 (in 50% of samples), and 16p13 amplification was associated with relatively poor differentiation and late stage. M-FISH and CGH can be a powerful tool in identification of genomic alterations in lung cancer, as well as in diagnosis. The overrepresented regions may harbor potential candidate genes involved in lung adenocarcinoma pathogenesis.
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