ABSTRACT
BACKGROUND AND OBJECTIVES: The knowledge about chromosomal aberrations manifestated in cancer has been spotlighted recently. The genetic analyses based on the knowledge about chromosomal aberrations are important for the development of diagnotic methods and evaluation of prognostic factors in cancers. Comparative genomic hybridization (CGH) is a powerful tool for evaluating chromosomal aberrations and array CGH significantly enhances these diagnostic effectiveness. The incidence of head and neck squamous cell carcinoma (HNSCC) has been increasing worldwide but the treatment outcomes still have been limited. The aim of this study is to evaluate the location of chromosomal aberrations in HNSCC cell lines with the combination of CGH and array CGH. Materials and MethodZZThe locations of chromosomal aberrations were evaluated in 3 HNSCC cell lines (PCI-1, PCI-13, PCI-50) using the combination of CGH and array CGH. RESULTS: The sites of chromosomal gain shown by CGH in all 3 cell lines were 8q22-qter, 9q32- qter, 10q22, 10q26-qter, 16q12.1-qter, 17p10-p13, 17q21-qter, 19p13.2-pter and 20q. The chromsomal loss found in 2 cell lines were 3p, 4q21-qter, and 18q21-qter. In array-CGH, gained loci were AHRR, MYT1 and PTGIS, etc. Loci of genetic losses were ELAVL4 and GRM7. CONCLUSION: In this study, we identified various genetic gains and losses using CGH and high resolution array-CGH. These data about the patterns of chromosomal aberrations in HNSCC cell lines would be a basic step for understanding more detailed genetic events in the carcinogenesis. CGH combined with array CGH can be a powerful option for transitional oncologic research.